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xtensa/esp32s3: add setup rx dma after slave receive data

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Kevin Zhou 2024-09-29 18:55:33 +08:00 • committed by Xiang Xiao
parent 73f0c7c51d
commit 7acb298f26
1 changed files with 20 additions and 11 deletions
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31
arch/xtensa/src/esp32s3/esp32s3_spi_slave.c
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@ -1732,19 +1732,28 @@ static size_t spislave_qpoll(struct spi_slave_ctrlr_s *ctrlr)
tmp = SPIS_DEV_RECEIVE(priv->dev, priv->rx_buffer,
BYTES2WORDS(priv, priv->rx_length));
recv_n = WORDS2BYTES(priv, tmp);
if (recv_n < priv->rx_length)
if (tmp)
{
/* If the upper layer does not receive all of the data from the receive
* buffer, move the remaining data to the head of the buffer.
*/
recv_n = WORDS2BYTES(priv, tmp);
if (recv_n < priv->rx_length)
{
/* If the upper layer does not receive all of the data from the
* receive buffer, move the remaining data to the head of the
* buffer.
*/
priv->rx_length -= recv_n;
memmove(priv->rx_buffer, priv->rx_buffer + recv_n, priv->rx_length);
}
else
{
priv->rx_length = 0;
priv->rx_length -= recv_n;
memmove(priv->rx_buffer, priv->rx_buffer + recv_n,
priv->rx_length);
}
else
{
priv->rx_length = 0;
}
#ifdef CONFIG_ESP32S3_SPI_DMA
spislave_setup_rx_dma(priv);
#endif
}
remaining_words = BYTES2WORDS(priv, priv->rx_length);