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boards/risc-v/esp32c2/common: add on-chip peripheral board helpers

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Add ADC, I2C, LEDC, SPI, SPI flash, MMCSD and RNG helpers used by
the ESP32-C2 board bring-up.

Assisted-by: Claude:claude-opus-5
Signed-off-by: Marcio Ribeiro <marcio.ribeiro@espressif.com>
This commit is contained in:
Marcio Ribeiro 2026-09-09 17:49:21 -03:00 • committed by Alan C. Assis
parent 3ab1b4b8fe
commit 2f715c4918
19 changed files with 2209 additions and 0 deletions
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79
boards/risc-v/esp32c2/common/include/esp_board_adc.h Normal file
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/****************************************************************************
* boards/risc-v/esp32c2/common/include/esp_board_adc.h
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
#ifndef __BOARDS_RISCV_ESP32C2_COMMON_INCLUDE_ESP32C2_BOARD_ADC_H
#define __BOARDS_RISCV_ESP32C2_COMMON_INCLUDE_ESP32C2_BOARD_ADC_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
#ifndef __ASSEMBLY__
#undef EXTERN
#if defined(__cplusplus)
#define EXTERN extern "C"
extern "C"
{
#else
#define EXTERN extern
#endif
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
/****************************************************************************
* Name: board_adc_init
*
* Description:
* This function configures and initializes the ADC driver for the board.
* It allocates memory for the ADC device structure, sets up the ADC
* hardware, and registers the ADC device with the system.
*
* Input Parameters:
* None.
*
* Returned Value:
* Returns zero (OK) on successful initialization and registration of the
* ADC device; a negated errno value is returned to indicate the nature
* of any failure.
*
****************************************************************************/
#ifdef CONFIG_ESPRESSIF_ADC
int board_adc_init(void);
#endif
#undef EXTERN
#if defined(__cplusplus)
}
#endif
#endif /* __ASSEMBLY__ */
#endif /* __BOARDS_RISCV_ESP32C2_COMMON_INCLUDE_ESP32C2_BOARD_ADC_H */

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boards/risc-v/esp32c2/common/include/esp_board_i2c.h Normal file
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/****************************************************************************
* boards/risc-v/esp32c2/common/include/esp_board_i2c.h
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
#ifndef __BOARDS_RISCV_ESP32C2_COMMON_INCLUDE_ESP_BOARD_I2C_H
#define __BOARDS_RISCV_ESP32C2_COMMON_INCLUDE_ESP_BOARD_I2C_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
#ifndef __ASSEMBLY__
#undef EXTERN
#if defined(__cplusplus)
#define EXTERN extern "C"
extern "C"
{
#else
#define EXTERN extern
#endif
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
/****************************************************************************
* Name: board_i2c_init
*
* Description:
* Configure the I2C driver.
*
* Input Parameters:
* None.
*
* Returned Value:
* Zero (OK) is returned on success; A negated errno value is returned
* to indicate the nature of any failure.
*
****************************************************************************/
#ifdef CONFIG_I2C
int board_i2c_init(void);
#endif
#undef EXTERN
#if defined(__cplusplus)
}
#endif
#endif /* __ASSEMBLY__ */
#endif /* __BOARDS_RISCV_ESP32C2_COMMON_INCLUDE_ESP_BOARD_I2C_H */

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boards/risc-v/esp32c2/common/include/esp_board_ledc.h Normal file
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/****************************************************************************
* boards/risc-v/esp32c2/common/include/esp_board_ledc.h
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
#ifndef __BOARDS_RISCV_ESP32C2_COMMON_INCLUDE_ESP_BOARD_LEDC_H
#define __BOARDS_RISCV_ESP32C2_COMMON_INCLUDE_ESP_BOARD_LEDC_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
#ifndef __ASSEMBLY__
#undef EXTERN
#if defined(__cplusplus)
#define EXTERN extern "C"
extern "C"
{
#else
#define EXTERN extern
#endif
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
/****************************************************************************
* Name: board_ledc_setup
*
* Description:
* Initialize LEDC PWM and register the PWM device.
*
* Input Parameters:
* None.
*
* Returned Value:
* Zero (OK) is returned on success; A negated errno value is returned
* to indicate the nature of any failure.
*
****************************************************************************/
#ifdef CONFIG_ESPRESSIF_LEDC
int board_ledc_setup(void);
#endif
#undef EXTERN
#if defined(__cplusplus)
}
#endif
#endif /* __ASSEMBLY__ */
#endif /* __BOARDS_RISCV_ESP32C2_COMMON_INCLUDE_ESP_BOARD_LEDC_H */

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boards/risc-v/esp32c2/common/include/esp_board_mmcsd.h Normal file
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/****************************************************************************
* boards/risc-v/esp32c2/common/include/esp_board_mmcsd.h
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
#ifndef __BOARDS_RISCV_ESP32C2_COMMON_INCLUDE_ESP_BOARD_MMCSD_H
#define __BOARDS_RISCV_ESP32C2_COMMON_INCLUDE_ESP_BOARD_MMCSD_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
#ifndef __ASSEMBLY__
#undef EXTERN
#if defined(__cplusplus)
#define EXTERN extern "C"
extern "C"
{
#else
#define EXTERN extern
#endif
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
/****************************************************************************
* Name: esp_mmcsd_spi_initialize
*
* Description:
* Initialize SPI-based SD card.
*
* Input Parameters:
* None.
*
* Returned Value:
* Zero (OK) is returned on success; A negated errno value is returned
* to indicate the nature of any failure.
*
****************************************************************************/
#ifdef CONFIG_MMCSD_SPI
int esp_mmcsd_spi_initialize(void);
#endif
#undef EXTERN
#if defined(__cplusplus)
}
#endif
#endif /* __ASSEMBLY__ */
#endif /* __BOARDS_RISCV_ESP32C2_COMMON_INCLUDE_ESP_BOARD_MMCSD_H */

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boards/risc-v/esp32c2/common/include/esp_board_rng90.h Normal file
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/****************************************************************************
* boards/risc-v/esp32c2/common/include/esp_board_rng90.h
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
#ifndef __BOARDS_RISCV_ESP32C2_COMMON_INCLUDE_ESP_BOARD_RNG90_H
#define __BOARDS_RISCV_ESP32C2_COMMON_INCLUDE_ESP_BOARD_RNG90_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
#ifndef __ASSEMBLY__
#undef EXTERN
#if defined(__cplusplus)
#define EXTERN extern "C"
extern "C"
{
#else
#define EXTERN extern
#endif
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
/****************************************************************************
* Name: board_rng90_initialize
*
* Description:
* Initialize and register the RNG90 True Random Number Generator driver.
*
* Input Parameters:
* devno - The device number, used to build the device path as /dev/rngN
*
* Returned Value:
* Zero (OK) on success; a negated errno value on failure.
****************************************************************************/
#ifdef CONFIG_DEV_RNG90
int board_rng90_initialize(int devno);
#endif /* CONFIG_DEV_RNG90 */
#undef EXTERN
#if defined(__cplusplus)
}
#endif
#endif /* __ASSEMBLY__ */
#endif /* __BOARDS_RISCV_ESP32C2_COMMON_INCLUDE_ESP_BOARD_RNG90_H */

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boards/risc-v/esp32c2/common/include/esp_board_spidev.h Normal file
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/****************************************************************************
* boards/risc-v/esp32c2/common/include/esp_board_spidev.h
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
#ifndef __BOARDS_RISC_V_ESP32C2_COMMON_INCLUDE_ESP_BOARD_SPIDEV_H
#define __BOARDS_RISC_V_ESP32C2_COMMON_INCLUDE_ESP_BOARD_SPIDEV_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
#ifndef __ASSEMBLY__
/****************************************************************************
* Public Data
****************************************************************************/
#undef EXTERN
#if defined(__cplusplus)
#define EXTERN extern "C"
extern "C"
{
#else
#define EXTERN extern
#endif
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
/****************************************************************************
* Name: board_spidev_initialize
*
* Description:
* Initialize SPI driver and register the /dev/spi device.
*
* Input Parameters:
* bus - The SPI bus number, used to build the device path as /dev/spiN
*
* Returned Value:
* Zero (OK) is returned on success; A negated errno value is returned
* to indicate the nature of any failure.
*
****************************************************************************/
#ifdef CONFIG_SPI
int board_spidev_initialize(int bus);
#endif
#undef EXTERN
#if defined(__cplusplus)
}
#endif
#endif /* __ASSEMBLY__ */
#endif /* __BOARDS_RISC_V_ESP32C2_COMMON_INCLUDE_ESP_BOARD_SPIDEV_H */

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boards/risc-v/esp32c2/common/include/esp_board_spiflash.h Normal file
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/****************************************************************************
* boards/risc-v/esp32c2/common/include/esp_board_spiflash.h
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
#ifndef __BOARDS_RISCV_ESP32C2_COMMON_INCLUDE_ESP_BOARD_SPIFLASH_H
#define __BOARDS_RISCV_ESP32C2_COMMON_INCLUDE_ESP_BOARD_SPIFLASH_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
#ifndef __ASSEMBLY__
#undef EXTERN
#if defined(__cplusplus)
#define EXTERN extern "C"
extern "C"
{
#else
#define EXTERN extern
#endif
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
/****************************************************************************
* Name: board_spiflash_init
*
* Description:
* Initialize the SPIFLASH and register the MTD device.
*
* Input Parameters:
* None.
*
* Returned Value:
* Zero (OK) is returned on success; A negated errno value is returned
* to indicate the nature of any failure.
*
****************************************************************************/
#ifdef CONFIG_ESPRESSIF_SPIFLASH
int board_spiflash_init(void);
#endif
#undef EXTERN
#if defined(__cplusplus)
}
#endif
#endif /* __ASSEMBLY__ */
#endif /* __BOARDS_RISCV_ESP32C2_COMMON_INCLUDE_ESP_BOARD_SPIFLASH_H */

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boards/risc-v/esp32c2/common/include/esp_board_spislavedev.h Normal file
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/****************************************************************************
* boards/risc-v/esp32c2/common/include/esp_board_spislavedev.h
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
#ifndef __BOARDS_RISCV_ESP32C2_COMMON_INCLUDE_ESP_BOARD_SPISLAVEDEV_H
#define __BOARDS_RISCV_ESP32C2_COMMON_INCLUDE_ESP_BOARD_SPISLAVEDEV_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
#ifndef __ASSEMBLY__
#undef EXTERN
#if defined(__cplusplus)
#define EXTERN extern "C"
extern "C"
{
#else
#define EXTERN extern
#endif
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
/****************************************************************************
* Name: board_spislavedev_initialize
*
* Description:
* Initialize SPI Slave driver and register the /dev/spislv device.
*
* Input Parameters:
* bus - The SPI bus number, used to build the device path as /dev/spislvN
*
* Returned Value:
* Zero (OK) is returned on success; A negated errno value is returned
* to indicate the nature of any failure.
*
****************************************************************************/
#ifdef CONFIG_SPI_SLAVE
int board_spislavedev_initialize(int bus);
#endif
#undef EXTERN
#if defined(__cplusplus)
}
#endif
#endif /* __ASSEMBLY__ */
#endif /* __BOARDS_RISCV_ESP32C2_COMMON_INCLUDE_ESP_BOARD_SPISLAVEDEV_H */

40
boards/risc-v/esp32c2/common/src/CMakeLists.txt
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@ -22,4 +22,44 @@
set(SRCS)
if(CONFIG_ARCH_BOARD_COMMON)
if(CONFIG_ESPRESSIF_ADC)
list(APPEND SRCS esp_board_adc.c)
endif()
if(CONFIG_ESPRESSIF_LEDC)
list(APPEND SRCS esp_board_ledc.c)
endif()
if(CONFIG_ESPRESSIF_SPI)
list(APPEND SRCS esp_board_spi.c)
endif()
if(CONFIG_SPI)
list(APPEND SRCS esp_board_spidev.c)
endif()
if(CONFIG_SPI_SLAVE)
list(APPEND SRCS esp_board_spislavedev.c)
endif()
if(CONFIG_I2C)
list(APPEND SRCS esp_board_i2c.c)
endif()
if(CONFIG_ESPRESSIF_SPIFLASH)
list(APPEND SRCS esp_board_spiflash.c)
endif()
if(CONFIG_DEV_RNG90)
list(APPEND SRCS esp_board_rng90.c)
endif()
if(CONFIG_MMCSD_SPI)
list(APPEND SRCS esp_board_mmcsd.c)
endif()
endif()
target_sources(board PRIVATE ${SRCS})

36
boards/risc-v/esp32c2/common/src/Make.defs
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@ -22,6 +22,42 @@
ifeq ($(CONFIG_ARCH_BOARD_COMMON),y)
ifeq ($(CONFIG_ESPRESSIF_ADC),y)
CSRCS += esp_board_adc.c
endif
ifeq ($(CONFIG_ESPRESSIF_LEDC),y)
CSRCS += esp_board_ledc.c
endif
ifeq ($(CONFIG_ESPRESSIF_SPI),y)
CSRCS += esp_board_spi.c
endif
ifeq ($(CONFIG_SPI),y)
CSRCS += esp_board_spidev.c
endif
ifeq ($(CONFIG_SPI_SLAVE),y)
CSRCS += esp_board_spislavedev.c
endif
ifeq ($(CONFIG_I2C),y)
CSRCS += esp_board_i2c.c
endif
ifeq ($(CONFIG_ESPRESSIF_SPIFLASH),y)
CSRCS += esp_board_spiflash.c
endif
ifeq ($(CONFIG_DEV_RNG90),y)
CSRCS += esp_board_rng90.c
endif
ifeq ($(CONFIG_MMCSD_SPI),y)
CSRCS += esp_board_mmcsd.c
endif
DEPPATH += --dep-path src
VPATH += :src
CFLAGS += ${INCDIR_PREFIX}$(TOPDIR)$(DELIM)arch$(DELIM)$(CONFIG_ARCH)$(DELIM)src$(DELIM)board$(DELIM)src

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boards/risc-v/esp32c2/common/src/esp_board_adc.c Normal file
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/****************************************************************************
* boards/risc-v/esp32c2/common/src/esp_board_adc.c
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdio.h>
#include <syslog.h>
#include <nuttx/analog/adc.h>
#include "espressif/esp_adc.h"
#include "esp_board_adc.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/* The number of channels for each ADC */
#define ADC_MAX_CHANNELS 5
/****************************************************************************
* Private Data
****************************************************************************/
/* Select channels to be used for each ADC.
*
* GPIOs are fixed for each channel and configured in the lower-half driver.
*
* ADC 1
* Channel: 0 1 2 3 4 5
* GPIO: 0 1 2 3 4 5
*
* On the chanlist arrays below, channels are added +1. Do not change.
*/
#ifdef CONFIG_ESPRESSIF_ADC_1
static const uint8_t g_chanlist_adc1[ADC_MAX_CHANNELS] =
{
#ifdef CONFIG_ESPRESSIF_ADC_1_CH0
1,
#endif
#ifdef CONFIG_ESPRESSIF_ADC_1_CH1
2,
#endif
#ifdef CONFIG_ESPRESSIF_ADC_1_CH2
3,
#endif
#ifdef CONFIG_ESPRESSIF_ADC_1_CH3
4,
#endif
#ifdef CONFIG_ESPRESSIF_ADC_1_CH4
5,
#endif
#ifdef CONFIG_ESPRESSIF_ADC_1_CH5
6,
#endif
};
#endif
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: board_adc_init
*
* Description:
* This function configures and initializes the ADC driver for the board.
* It allocates memory for the ADC device structure, sets up the ADC
* hardware, and registers the ADC device with the system.
*
* Input Parameters:
* None.
*
* Returned Value:
* Returns zero (OK) on successful initialization and registration of the
* ADC device; a negated errno value is returned to indicate the nature
* of any failure.
*
****************************************************************************/
int board_adc_init(void)
{
int ret;
struct adc_dev_s *adcdev;
adcdev = kmm_malloc(sizeof(struct adc_dev_s));
if (adcdev == NULL)
{
syslog(LOG_ERR, "ERROR: Failed to allocate adc_dev_s instance\n");
return -ENOMEM;
}
memset(adcdev, 0, sizeof(struct adc_dev_s));
adcdev = esp_adc_initialize(1, g_chanlist_adc1);
if (adcdev == NULL)
{
syslog(LOG_ERR, "ERROR: Failed to initialize ADC1\n");
return -ENODEV;
}
/* Register the ADC driver at "/dev/adcx" */
ret = adc_register("/dev/adc0", adcdev);
if (ret < 0)
{
kmm_free(adcdev);
syslog(LOG_ERR, "ERROR: adc_register /dev/adc0 failed: %d\n", ret);
}
return ret;
}

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/****************************************************************************
* boards/risc-v/esp32c2/common/src/esp_board_i2c.c
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <syslog.h>
#include <errno.h>
#include <sys/types.h>
#include <nuttx/i2c/i2c_master.h>
#ifdef CONFIG_ESPRESSIF_I2C_BITBANG
#include "espressif/esp_i2c_bitbang.h"
#endif
#ifdef CONFIG_ESPRESSIF_I2C_PERIPH_MASTER_MODE
#include "espressif/esp_i2c.h"
#endif
#ifdef CONFIG_ESPRESSIF_I2C_PERIPH_SLAVE_MODE
#include "espressif/esp_i2c_slave.h"
#endif
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
#ifdef CONFIG_ESPRESSIF_I2C_PERIPH_SLAVE_MODE
#define I2C0_SLAVE_ADDR 0x28
#define I2C0_SLAVE_NBITS 7
#endif
/****************************************************************************
* Public Functions
****************************************************************************/
#ifdef CONFIG_ESPRESSIF_I2C_BITBANG
static int i2c_bitbang_driver_init(int bus)
{
struct i2c_master_s *i2c;
int ret = OK;
i2c = esp_i2cbus_bitbang_initialize();
if (i2c == NULL)
{
syslog(LOG_ERR, "Failed to get I2C%d interface\n", bus);
return -ENODEV;
}
#ifdef CONFIG_I2C_DRIVER
ret = i2c_register(i2c, bus);
if (ret < 0)
{
syslog(LOG_ERR, "Failed to register I2C%d driver: %d\n", bus, ret);
}
#endif
return ret;
}
#endif
#ifdef CONFIG_ESPRESSIF_I2C_PERIPH_MASTER_MODE
static int i2c_driver_init(int bus)
{
struct i2c_master_s *i2c;
int ret = OK;
i2c = esp_i2cbus_initialize(bus);
if (i2c == NULL)
{
syslog(LOG_ERR, "Failed to get I2C%d interface\n", bus);
return -ENODEV;
}
#ifdef CONFIG_I2C_DRIVER
ret = i2c_register(i2c, bus);
if (ret < 0)
{
syslog(LOG_ERR, "Failed to register I2C%d driver: %d\n", bus, ret);
esp_i2cbus_uninitialize(i2c);
}
#endif
return ret;
}
#endif
#ifdef CONFIG_ESPRESSIF_I2C_PERIPH_SLAVE_MODE
static int i2c_slave_driver_init(int bus, int addr)
{
struct i2c_slave_s *i2c;
int ret = OK;
i2c = esp_i2cbus_slave_initialize(bus, addr);
if (i2c == NULL)
{
syslog(LOG_ERR, "Failed to get I2C%d interface\n", bus);
return -ENODEV;
}
#ifdef CONFIG_I2C_DRIVER
ret = i2c_slave_register(i2c, bus, addr, I2C0_SLAVE_NBITS);
if (ret < 0)
{
syslog(LOG_ERR, "Failed to register I2C%d driver: %d\n", bus, ret);
esp_i2cbus_slave_uninitialize(i2c);
}
#endif
return ret;
}
#endif
/****************************************************************************
* Name: board_i2c_init
*
* Description:
* Configure the I2C driver.
*
* Returned Value:
* Zero (OK) is returned on success; A negated errno value is returned
* to indicate the nature of any failure.
*
****************************************************************************/
int board_i2c_init(void)
{
int ret = OK;
#ifdef CONFIG_ESPRESSIF_I2C_PERIPH_MASTER_MODE
# ifdef CONFIG_ESPRESSIF_I2C0_MASTER_MODE
ret = i2c_driver_init(ESPRESSIF_I2C0);
# endif
#endif
#ifdef CONFIG_ESPRESSIF_I2C_BITBANG
# ifdef CONFIG_ESPRESSIF_I2C_BITBANG_MASTER_MODE
ret = i2c_bitbang_driver_init(ESPRESSIF_I2C_BITBANG);
# endif
#endif
#ifdef CONFIG_ESPRESSIF_I2C_PERIPH_SLAVE_MODE
# ifdef CONFIG_ESPRESSIF_I2C0_SLAVE_MODE
ret = i2c_slave_driver_init(ESPRESSIF_I2C0_SLAVE, I2C0_SLAVE_ADDR);
# endif
#endif
return ret;
}

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/****************************************************************************
* boards/risc-v/esp32c2/common/src/esp_board_ledc.c
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <errno.h>
#include <nuttx/debug.h>
#include <nuttx/board.h>
#include <nuttx/timers/pwm.h>
#include <arch/board/board.h>
#include "espressif/esp_ledc.h"
#include "esp_board_ledc.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
#define LEDC_TIMER0 0
#define LEDC_TIMER1 1
#define LEDC_TIMER2 2
#define LEDC_TIMER3 3
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: board_ledc_setup
*
* Description:
* Initialize LEDC PWM and register the PWM device.
*
* Input Parameters:
* None.
*
* Returned Value:
* Zero (OK) is returned on success; A negated errno value is returned
* to indicate the nature of any failure.
*
****************************************************************************/
int board_ledc_setup(void)
{
int ret = OK;
struct pwm_lowerhalf_s *pwm;
#ifdef CONFIG_ESPRESSIF_LEDC_TIMER0
pwm = esp_ledc_init(LEDC_TIMER0);
if (!pwm)
{
syslog(LOG_ERR, "ERROR: Failed to get the LEDC PWM 0 lower half\n");
return -ENODEV;
}
/* Register the PWM driver at "/dev/pwm0" */
ret = pwm_register("/dev/pwm0", pwm);
if (ret < 0)
{
syslog(LOG_ERR, "ERROR: pwm_register failed: %d\n", ret);
return ret;
}
#endif
#ifdef CONFIG_ESPRESSIF_LEDC_TIMER1
pwm = esp_ledc_init(LEDC_TIMER1);
if (!pwm)
{
syslog(LOG_ERR, "ERROR: Failed to get the LEDC PWM 1 lower half\n");
return -ENODEV;
}
/* Register the PWM driver at "/dev/pwm1" */
ret = pwm_register("/dev/pwm1", pwm);
if (ret < 0)
{
syslog(LOG_ERR, "ERROR: pwm_register failed: %d\n", ret);
return ret;
}
#endif
#ifdef CONFIG_ESPRESSIF_LEDC_TIMER2
pwm = esp_ledc_init(LEDC_TIMER2);
if (!pwm)
{
syslog(LOG_ERR, "ERROR: Failed to get the LEDC PWM 2 lower half\n");
return -ENODEV;
}
/* Register the PWM driver at "/dev/pwm2" */
ret = pwm_register("/dev/pwm2", pwm);
if (ret < 0)
{
syslog(LOG_ERR, "ERROR: pwm_register failed: %d\n", ret);
return ret;
}
#endif
#ifdef CONFIG_ESPRESSIF_LEDC_TIMER3
pwm = esp_ledc_init(LEDC_TIMER3);
if (!pwm)
{
syslog(LOG_ERR, "ERROR: Failed to get the LEDC PWM 3 lower half\n");
return -ENODEV;
}
/* Register the PWM driver at "/dev/pwm3" */
ret = pwm_register("/dev/pwm3", pwm);
if (ret < 0)
{
syslog(LOG_ERR, "ERROR: pwm_register failed: %d\n", ret);
return ret;
}
#endif
return ret;
}

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/****************************************************************************
* boards/risc-v/esp32c2/common/src/esp_board_mmcsd.c
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/debug.h>
#include <nuttx/config.h>
#include <nuttx/mmcsd.h>
#include <nuttx/spi/spi.h>
#include "espressif/esp_spi.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/****************************************************************************
* Private Definitions
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: esp_mmcsd_spi_initialize
*
* Description:
* Initialize SPI-based SD card.
*
* Input Parameters:
* minor - The MMC/SD minor device number. The MMC/SD device will be
* registered as /dev/mmcsdN where N is the minor number
*
* Returned Value:
* Zero (OK) is returned on success; A negated errno value is returned
* to indicate the nature of any failure.
*
****************************************************************************/
int esp_mmcsd_spi_initialize(void)
{
struct spi_dev_s *spi;
int ret;
syslog(LOG_INFO, "INFO: init MMC/SD slot %d on SPI%d: /dev/mmcsd%d\n",
CONFIG_NSH_MMCSDSLOTNO, CONFIG_NSH_MMCSDSPIPORTNO,
CONFIG_NSH_MMCSDMINOR);
spi = esp_spibus_initialize(CONFIG_NSH_MMCSDSPIPORTNO);
if (spi == NULL)
{
syslog(LOG_ERR, "ERROR: failed to initialize SPI%d.\n",
CONFIG_NSH_MMCSDSPIPORTNO);
return -ENODEV;
}
/* Mounts to /dev/mmcsdN where N in the minor number */
ret = mmcsd_spislotinitialize(CONFIG_NSH_MMCSDMINOR,
CONFIG_NSH_MMCSDSLOTNO, spi);
if (ret < 0)
{
syslog(LOG_ERR, "ERROR: failed to bind SPI%d to SD slot %d\n",
CONFIG_NSH_MMCSDSPIPORTNO, CONFIG_NSH_MMCSDSLOTNO);
return ret;
}
syslog(LOG_INFO, "INFO: MMCSD initialized\n");
return OK;
}

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/****************************************************************************
* boards/risc-v/esp32c2/common/src/esp_board_rng90.c
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdio.h>
#include <nuttx/arch.h>
#include <nuttx/crypto/rng90.h>
#include <nuttx/debug.h>
#include <nuttx/i2c/i2c_master.h>
#ifndef CONFIG_ESPRESSIF_I2C_BITBANG
# include "espressif/esp_i2c.h"
#else
# include "espressif/esp_i2c_bitbang.h"
#endif
#include "esp_board_rng90.h"
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: board_rng90_initialize
*
* Description:
* Initialize and register the RNG90 True Random Number Generator driver.
*
* Input Parameters:
* devno - The device number, used to build the device path as /dev/rngN
*
* Returned Value:
* Zero (OK) on success; a negated errno value on failure.
****************************************************************************/
int board_rng90_initialize(int devno)
{
struct i2c_master_s *i2c;
char devpath[16];
int ret;
sninfo("Initializing RNG90\n");
/* Initialize I2C */
#ifndef CONFIG_ESPRESSIF_I2C_BITBANG
i2c = esp_i2cbus_initialize(ESPRESSIF_I2C0);
#else
i2c = esp_i2cbus_bitbang_initialize();
#endif
if (i2c == NULL)
{
snerr("ERROR: Failed to initialize I2C for RNG90\n");
return -ENODEV;
}
/* Register the RNG90 driver at "/dev/rngN" */
snprintf(devpath, sizeof(devpath), "/dev/rng%d", devno);
ret = rng90_register(devpath, i2c, RNG90_I2C_ADDR);
if (ret < 0)
{
snerr("ERROR: Failed to register RNG90 driver: %d\n", ret);
return ret;
}
return OK;
}

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/****************************************************************************
* boards/risc-v/esp32c2/common/src/esp_board_spi.c
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdint.h>
#include <stdbool.h>
#include <nuttx/debug.h>
#include <nuttx/spi/spi.h>
#include "espressif/esp_gpio.h"
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: esp_spi2_status
****************************************************************************/
#ifdef CONFIG_ESPRESSIF_SPI2
uint8_t esp_spi2_status(struct spi_dev_s *dev, uint32_t devid)
{
uint8_t status = 0;
if (devid == SPIDEV_MMCSD(0))
{
return SPI_STATUS_PRESENT;
}
return status;
}
#endif
/****************************************************************************
* Name: esp_spi2_cmddata
****************************************************************************/
#if defined(CONFIG_ESPRESSIF_SPI2) && defined(CONFIG_SPI_CMDDATA)
int esp_spi2_cmddata(struct spi_dev_s *dev, uint32_t devid, bool cmd)
{
if (devid == SPIDEV_DISPLAY(0))
{
/* This is the Data/Command control pad which determines whether the
* data bits are data or a command.
*/
esp_gpiowrite(CONFIG_ESPRESSIF_SPI2_MISOPIN, !cmd);
return OK;
}
spiinfo("devid: %" PRIu32 " CMD: %s\n", devid, cmd ? "command" :
"data");
return -ENODEV;
}
#endif

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/****************************************************************************
* boards/risc-v/esp32c2/common/src/esp_board_spidev.c
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdio.h>
#include <syslog.h>
#include <errno.h>
#include <nuttx/spi/spi_transfer.h>
#ifdef CONFIG_ESPRESSIF_SPI_PERIPH
#include "espressif/esp_spi.h"
#endif
#ifdef CONFIG_ESPRESSIF_SPI_BITBANG
#include "espressif/esp_spi_bitbang.h"
#endif
#include "esp_board_spidev.h"
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: spi_bitbang_driver_init
*
* Description:
* Initialize SPI bitbang driver and register the /dev/spi device.
*
* Input Parameters:
* port - The SPI bus number, used to build the device path as /dev/spiN
*
* Returned Value:
* Zero (OK) is returned on success; A negated errno value is returned
* to indicate the nature of any failure.
*
****************************************************************************/
#ifdef CONFIG_ESPRESSIF_SPI_BITBANG
static int spi_bitbang_driver_init(int port)
{
struct spi_dev_s *spi;
int ret = OK;
/* Initialize SPI device */
spi = esp_spi_bitbang_init();
if (spi == NULL)
{
syslog(LOG_ERR, "Failed to initialize SPI%d.\n", port);
return -ENODEV;
}
#ifdef CONFIG_SPI_DRIVER
syslog(LOG_INFO, "Initializing /dev/spi%d...\n", port);
ret = spi_register(spi, port);
if (ret < 0)
{
syslog(LOG_ERR, "Failed to register /dev/spi%d: %d\n", port, ret);
esp_spi_bitbang_uninitialize(spi);
}
#endif
return ret;
}
#endif
/****************************************************************************
* Name: spi_driver_init
*
* Description:
* Initialize SPI driver and register the /dev/spi device.
*
* Input Parameters:
* port - The SPI bus number, used to build the device path as /dev/spiN
*
* Returned Value:
* Zero (OK) is returned on success; A negated errno value is returned
* to indicate the nature of any failure.
*
****************************************************************************/
#ifdef CONFIG_ESPRESSIF_SPI_PERIPH
static int spi_driver_init(int port)
{
int ret = OK;
struct spi_dev_s *spi;
/* Initialize SPI device */
spi = esp_spibus_initialize(port);
if (spi == NULL)
{
syslog(LOG_ERR, "Failed to initialize SPI%d.\n", port);
return -ENODEV;
}
#ifdef CONFIG_SPI_DRIVER
syslog(LOG_INFO, "Initializing /dev/spi%d...\n", port);
ret = spi_register(spi, port);
if (ret < 0)
{
syslog(LOG_ERR, "Failed to register /dev/spi%d: %d\n", port, ret);
esp_spibus_uninitialize(spi);
}
#endif
return ret;
}
#endif
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: board_spidev_initialize
*
* Description:
* Configure the SPI drivers.
*
* Input Parameters:
* port - The SPI bus number, used to build the device path as /dev/spiN
*
* Returned Value:
* Zero (OK) is returned on success; A negated errno value is returned
* to indicate the nature of any failure.
*
****************************************************************************/
int board_spidev_initialize(int port)
{
int ret = OK;
switch (port)
{
#ifdef CONFIG_ESPRESSIF_SPI2
case ESPRESSIF_SPI2:
{
ret = spi_driver_init(ESPRESSIF_SPI2);
if (ret != OK)
{
return ret;
}
break;
}
#endif
#ifdef CONFIG_ESPRESSIF_SPI_BITBANG
case ESPRESSIF_SPI_BITBANG:
{
ret = spi_bitbang_driver_init(ESPRESSIF_SPI_BITBANG);
if (ret != OK)
{
return ret;
}
break;
}
#endif
default:
{
syslog(LOG_ERR, "ERROR: unsupported SPI %d\n", port);
return ERROR;
}
}
return ret;
}

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boards/risc-v/esp32c2/common/src/esp_board_spiflash.c Normal file
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/****************************************************************************
* boards/risc-v/esp32c2/common/src/esp_board_spiflash.c
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <sys/mount.h>
#include "inttypes.h"
#include <stdbool.h>
#include <stdlib.h>
#include <stdio.h>
#include <assert.h>
#include <errno.h>
#include <nuttx/debug.h>
#include <sys/param.h>
#include <nuttx/kmalloc.h>
#include <nuttx/spi/spi.h>
#include <nuttx/mtd/mtd.h>
#include <nuttx/mtd/configdata.h>
#include <nuttx/fs/nxffs.h>
#include <nuttx/fs/partition.h>
#include "espressif/esp_spiflash.h"
#include "espressif/esp_spiflash_mtd.h"
#include "esp_board_spiflash.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/****************************************************************************
* Private Types
****************************************************************************/
/****************************************************************************
* Private Function Prototypes
****************************************************************************/
#ifdef CONFIG_ESPRESSIF_HAVE_OTA_PARTITION
static int init_ota_partitions(void);
#endif
/****************************************************************************
* Private Data
****************************************************************************/
#ifdef CONFIG_ESPRESSIF_HAVE_OTA_PARTITION
static const struct partition_s g_ota_partition_table[] =
{
{
.name = CONFIG_ESPRESSIF_OTA_PRIMARY_SLOT_DEVPATH,
.index = 0,
.firstblock = CONFIG_ESPRESSIF_OTA_PRIMARY_SLOT_OFFSET,
.blocksize = CONFIG_ESPRESSIF_OTA_SLOT_SIZE,
},
{
.name = CONFIG_ESPRESSIF_OTA_SECONDARY_SLOT_DEVPATH,
.index = 1,
.firstblock = CONFIG_ESPRESSIF_OTA_SECONDARY_SLOT_OFFSET,
.blocksize = CONFIG_ESPRESSIF_OTA_SLOT_SIZE,
},
{
.name = CONFIG_ESPRESSIF_OTA_SCRATCH_DEVPATH,
.index = 2,
.firstblock = CONFIG_ESPRESSIF_OTA_SCRATCH_OFFSET,
.blocksize = CONFIG_ESPRESSIF_OTA_SCRATCH_SIZE,
}
};
#endif
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: init_ota_partitions
*
* Description:
* Initialize partitions that are dedicated to firmware OTA update.
*
* Input Parameters:
* None.
*
* Returned Value:
* Zero on success; a negated errno value on failure.
*
****************************************************************************/
#ifdef CONFIG_ESPRESSIF_HAVE_OTA_PARTITION
static int init_ota_partitions(void)
{
struct mtd_dev_s *mtd;
int ret = OK;
int i;
for (i = 0; i < nitems(g_ota_partition_table); ++i)
{
const struct partition_s *part = &g_ota_partition_table[i];
mtd = esp_spiflash_alloc_mtdpart(part->firstblock, part->blocksize);
ret = register_mtddriver(part->name, mtd, 0755, NULL);
if (ret < 0)
{
syslog(LOG_ERR, "ERROR: register_mtddriver %s failed: %d\n",
part->name, ret);
return ret;
}
}
return ret;
}
#endif
/****************************************************************************
* Name: setup_smartfs
*
* Description:
* Provide a block driver wrapper around MTD partition and mount a
* SMART FS over it.
*
* Parameters:
* smartn - Number used to register the mtd partition: /dev/smartx, where
* x = smartn.
* mtd - Pointer to a pre-allocated mtd partition.
* mnt_pt - Mount point
*
* Returned Value:
* Zero on success; a negated errno value on failure.
*
****************************************************************************/
#if defined (CONFIG_ESPRESSIF_SPIFLASH_SMARTFS)
static int setup_smartfs(int smartn, struct mtd_dev_s *mtd,
const char *mnt_pt)
{
int ret = OK;
char path[22];
ret = smart_initialize(smartn, mtd, NULL);
if (ret < 0)
{
syslog(LOG_INFO, "smart_initialize failed, "
"Trying to erase first...\n");
ret = mtd->ioctl(mtd, MTDIOC_BULKERASE, 0);
if (ret < 0)
{
syslog(LOG_ERR, "ERROR: ioctl(BULKERASE) failed: %d\n", ret);
return ret;
}
syslog(LOG_INFO, "Erase successful, initializing it again.\n");
ret = smart_initialize(smartn, mtd, NULL);
if (ret < 0)
{
syslog(LOG_ERR, "ERROR: smart_initialize failed: %d\n", ret);
return ret;
}
}
if (mnt_pt != NULL)
{
snprintf(path, sizeof(path), "/dev/smart%d", smartn);
ret = nx_mount(path, mnt_pt, "smartfs", 0, NULL);
if (ret < 0)
{
syslog(LOG_ERR, "ERROR: Failed to mount the FS volume: %d\n",
ret);
if (ret == -ENODEV)
{
syslog(LOG_WARNING, "Smartfs seems unformatted. "
"Did you run 'mksmartfs /dev/smart%d'?\n", smartn);
}
return ret;
}
}
return ret;
}
#endif
/****************************************************************************
* Name: setup_littlefs
*
* Description:
* Register a mtd driver and mount a Little FS over it.
*
* Parameters:
* path - Path name used to register the mtd driver.
* mtd - Pointer to a pre-allocated mtd partition.
* mnt_pt - Mount point
* priv - Privileges
*
* Returned Value:
* Zero on success; a negated errno value on failure.
*
****************************************************************************/
#if defined (CONFIG_ESPRESSIF_SPIFLASH_LITTLEFS)
static int setup_littlefs(const char *path, struct mtd_dev_s *mtd,
const char *mnt_pt, int priv)
{
int ret = OK;
ret = register_mtddriver(path, mtd, priv, NULL);
if (ret < 0)
{
syslog(LOG_ERR, "ERROR: Failed to register MTD: %d\n", ret);
return ERROR;
}
if (mnt_pt != NULL)
{
ret = nx_mount(path, mnt_pt, "littlefs", 0, NULL);
if (ret < 0)
{
ret = nx_mount(path, mnt_pt, "littlefs", 0, "forceformat");
if (ret < 0)
{
syslog(LOG_ERR, "ERROR: Failed to mount the FS volume: %d\n",
ret);
return ret;
}
}
}
return OK;
}
#endif
/****************************************************************************
* Name: setup_spiffs
*
* Description:
* Register a mtd driver and mount a SPIFFS over it.
*
* Parameters:
* path - Path name used to register the mtd driver.
* mtd - Pointer to a pre-allocated mtd partition.
* mnt_pt - Mount point
* priv - Privileges
*
* Returned Value:
* Zero on success; a negated errno value on failure.
*
****************************************************************************/
#if defined (CONFIG_ESPRESSIF_SPIFLASH_SPIFFS)
static int setup_spiffs(const char *path, struct mtd_dev_s *mtd,
const char *mnt_pt, int priv)
{
int ret = OK;
ret = register_mtddriver(path, mtd, priv, NULL);
if (ret < 0)
{
syslog(LOG_ERR, "ERROR: Failed to register MTD: %d\n", ret);
return ERROR;
}
if (mnt_pt != NULL)
{
ret = nx_mount(path, mnt_pt, "spiffs", 0, NULL);
if (ret < 0)
{
syslog(LOG_ERR, "ERROR: Failed to mount the FS volume: %d\n",
ret);
return ret;
}
}
return ret;
}
#endif
/****************************************************************************
* Name: setup_nxffs
*
* Description:
* Register a mtd driver and mount a NXFFS over it.
*
* Parameters:
* mtd - Pointer to a pre-allocated mtd partition.
* mnt_pt - Mount point
*
* Returned Value:
* Zero on success; a negated errno value on failure.
*
****************************************************************************/
#if defined (CONFIG_ESPRESSIF_SPIFLASH_NXFFS)
static int setup_nxffs(struct mtd_dev_s *mtd, const char *mnt_pt)
{
int ret = OK;
ret = nxffs_initialize(mtd);
if (ret < 0)
{
syslog(LOG_ERR, "ERROR: NXFFS init failed: %d\n", ret);
return ret;
}
if (mnt_pt != NULL)
{
ret = nx_mount(NULL, mnt_pt, "nxffs", 0, NULL);
if (ret < 0)
{
syslog(LOG_ERR, "ERROR: Failed to mount the FS volume: %d\n",
ret);
return ret;
}
}
return ret;
}
#endif
/****************************************************************************
* Name: init_storage_partition
*
* Description:
* Initialize partition that is dedicated to general use.
*
* Input Parameters:
* None
*
* Returned Value:
* Zero on success; a negated errno value on failure.
*
****************************************************************************/
static int init_storage_partition(void)
{
int ret = OK;
struct mtd_dev_s *mtd;
mtd = esp_spiflash_alloc_mtdpart(CONFIG_ESPRESSIF_STORAGE_MTD_OFFSET,
CONFIG_ESPRESSIF_STORAGE_MTD_SIZE);
if (!mtd)
{
syslog(LOG_ERR, "ERROR: Fail to alloc MTD partition of SPI Flash\n");
return ERROR;
}
#if defined (CONFIG_ESPRESSIF_SPIFLASH_SMARTFS)
ret = setup_smartfs(0, mtd, CONFIG_ESPRESSIF_SPIFLASH_FS_MOUNT_PT);
if (ret < 0)
{
syslog(LOG_ERR, "ERROR: Failed to setup smartfs\n");
return ret;
}
#elif defined (CONFIG_ESPRESSIF_SPIFLASH_NXFFS)
ret = setup_nxffs(mtd, CONFIG_ESPRESSIF_SPIFLASH_FS_MOUNT_PT);
if (ret < 0)
{
syslog(LOG_ERR, "ERROR: Failed to setup nxffs\n");
return ret;
}
#elif defined (CONFIG_ESPRESSIF_SPIFLASH_LITTLEFS)
const char *path = "/dev/espflash";
ret = setup_littlefs(path, mtd, CONFIG_ESPRESSIF_SPIFLASH_FS_MOUNT_PT,
0755);
if (ret < 0)
{
syslog(LOG_ERR, "ERROR: Failed to setup littlefs\n");
return ret;
}
#elif defined (CONFIG_ESPRESSIF_SPIFLASH_SPIFFS)
const char *path = "/dev/espflash";
ret = setup_spiffs(path, mtd, CONFIG_ESPRESSIF_SPIFLASH_FS_MOUNT_PT,
0755);
if (ret < 0)
{
syslog(LOG_ERR, "ERROR: Failed to setup spiffs\n");
return ret;
}
#elif defined (CONFIG_ESPRESSIF_SPIFLASH_MTD_CONFIG)
# if defined (CONFIG_TESTING_MTD_CONFIG_NVS)
/* To test power-loss resilient kv system,
* we write possible power-loss flash layout into flash
* then start kv system to see if it recovers.
* To do so, we need a mtd driver so that test code can
* write into flash.
*/
const char *path = CONFIG_TESTING_MTD_CONFIG_MOUNTPT_NAME;
ret = register_mtddriver(path, mtd, 0777, NULL);
if (ret < 0)
{
syslog(LOG_ERR, "ERROR: Failed to register MTD: %d\n", ret);
return ret;
}
# else
ret = mtdconfig_register(mtd);
if (ret < 0)
{
syslog(LOG_ERR, "ERROR: Failed to setup mtd config\n");
return ret;
}
# endif
#else
ret = register_mtddriver("/dev/mtdblock0", mtd, 0755, NULL);
if (ret < 0)
{
syslog(LOG_ERR, "ERROR: Failed to register MTD mtdblock0: %d\n", ret);
return ret;
}
#endif
return ret;
}
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: board_spiflash_init
*
* Description:
* Initialize the SPI Flash and register the MTD device.
*
* Input Parameters:
* None.
*
* Returned Value:
* Zero (OK) is returned on success; A negated errno value is returned
* to indicate the nature of any failure.
*
****************************************************************************/
int board_spiflash_init(void)
{
int ret = OK;
#ifdef CONFIG_ESPRESSIF_HAVE_OTA_PARTITION
ret = init_ota_partitions();
if (ret < 0)
{
return ret;
}
#endif
ret = init_storage_partition();
if (ret < 0)
{
return ret;
}
return ret;
}

85
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@ -0,0 +1,85 @@
/****************************************************************************
* boards/risc-v/esp32c2/common/src/esp_board_spislavedev.c
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdio.h>
#include <syslog.h>
#include <errno.h>
#include <nuttx/spi/slave.h>
#include "espressif/esp_spi.h"
#include "esp_board_spislavedev.h"
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: board_spislavedev_initialize
*
* Description:
* Initialize SPI Slave driver and register the /dev/spislv device.
*
* Input Parameters:
* bus - The SPI bus number, used to build the device path as /dev/spislvN
*
* Returned Value:
* Zero (OK) is returned on success; A negated errno value is returned
* to indicate the nature of any failure.
*
****************************************************************************/
int board_spislavedev_initialize(int bus)
{
struct spi_slave_ctrlr_s *ctrlr;
int ret = OK;
/* Initialize SPI Slave controller device */
ctrlr = esp_spislave_ctrlr_initialize(bus);
if (ctrlr == NULL)
{
syslog(LOG_ERR, "Failed to initialize SPI%d as slave.\n", bus);
return -ENODEV;
}
#ifdef CONFIG_SPI_SLAVE_DRIVER
syslog(LOG_INFO, "Initializing /dev/spislv%d...\n", bus);
ret = spi_slave_register(ctrlr, bus);
if (ret < 0)
{
syslog(LOG_ERR, "Failed to register /dev/spislv%d: %d\n", bus, ret);
esp_spislave_ctrlr_uninitialize(ctrlr);
}
#endif
return ret;
}