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Merge branch 'bugfix/spi_lose_last_3_bytes_v4.2' into 'release/v4.2'

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spi_master: fix an issue where master cannot correctly receive data when using DMA in halfduplex mode (v4.2)

See merge request espressif/esp-idf!17379
This commit is contained in:
Jiang Jiang Jian
2022-05-19 10:54:36 +08:00
parent c71a9e5704 e9bbe44d19
commit 0fba64486a
1 changed files with 5 additions and 2 deletions
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7
components/soc/src/hal/spi_hal_iram.c
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@ -125,12 +125,15 @@ void spi_hal_prepare_data(const spi_hal_context_t *hal)
lldesc_setup_link(hal->dmadesc_rx, hal->rcv_buffer, ((hal->rx_bitlen + 7) / 8), true); lldesc_setup_link(hal->dmadesc_rx, hal->rcv_buffer, ((hal->rx_bitlen + 7) / 8), true);
spi_ll_rxdma_start(hw, hal->dmadesc_rx); spi_ll_rxdma_start(hw, hal->dmadesc_rx);
} }
} else { }
#if CONFIG_IDF_TARGET_ESP32
else {
//DMA temporary workaround: let RX DMA work somehow to avoid the issue in ESP32 v0/v1 silicon //DMA temporary workaround: let RX DMA work somehow to avoid the issue in ESP32 v0/v1 silicon
if (hal->dma_enabled) { if (hal->dma_enabled && !hal->half_duplex) {
spi_ll_rxdma_start(hw, 0); spi_ll_rxdma_start(hw, 0);
} }
} }
#endif
if (hal->send_buffer) { if (hal->send_buffer) {
if (!hal->dma_enabled) { if (!hal->dma_enabled) {