From 749dbce4317d300a4057b5477c932ccee4f7271c Mon Sep 17 00:00:00 2001 From: David Sidrane Date: Tue, 4 Aug 2020 04:50:03 -0700 Subject: [PATCH] stm32 serial:Add SINGLEWIRE PUSHPULL option --- arch/arm/src/stm32/stm32_serial.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/arch/arm/src/stm32/stm32_serial.c b/arch/arm/src/stm32/stm32_serial.c index 1f7e64b775a..efb3d903d16 100644 --- a/arch/arm/src/stm32/stm32_serial.c +++ b/arch/arm/src/stm32/stm32_serial.c @@ -1980,7 +1980,9 @@ static int up_ioctl(struct file *filep, int cmd, unsigned long arg) #else if ((arg & SER_SINGLEWIRE_ENABLED) != 0) { - uint32_t gpio_val = GPIO_OPENDRAIN; + uint32_t gpio_val = (arg & SER_SINGLEWIRE_PUSHPULL) == + SER_SINGLEWIRE_PUSHPULL ? + GPIO_PUSHPULL : GPIO_OPENDRAIN; gpio_val |= ((arg & SER_SINGLEWIRE_PULL_MASK) == SER_SINGLEWIRE_PULLUP) ? GPIO_PULLUP : GPIO_FLOAT;