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add function to start spi transaction from isr

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This commit is contained in:
Peter Pötzi
2024-11-21 13:24:40 +01:00
committed by 0xFEEDC0DE64
parent 3af7fd30eb
commit c01fb28dfb
2 changed files with 23 additions and 0 deletions
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3
components/esp_driver_spi/include/driver/spi_master.h
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@ -407,6 +407,9 @@ int spi_get_freq_limit(bool gpio_is_used, int input_delay_ns);
*/
esp_err_t spi_bus_get_max_transaction_len(spi_host_device_t host_id, size_t *max_bytes);
intr_handle_t spi_bus_get_intr(spi_host_device_t host);
void spi_dma_reset_start(spi_device_handle_t handle);
#ifdef __cplusplus
}
#endif

20
components/esp_driver_spi/src/gpspi/spi_master.c
View File

@ -721,6 +721,22 @@ static void SPI_MASTER_ISR_ATTR spi_bus_intr_disable(void *host)
#define spi_dma_start(chan, addr) gdma_start(chan, (intptr_t)(addr))
#endif
void SPI_MASTER_ISR_ATTR spi_dma_reset_start(spi_device_handle_t handle){
spi_host_t *host = handle->host;
spi_hal_context_t *hal = &(host->hal);
const spi_dma_ctx_t *dma_ctx = host->dma_ctx;
spi_dma_reset(dma_ctx->rx_dma_chan);
spi_hal_hw_prepare_rx(hal->hw);
spi_dma_start(dma_ctx->rx_dma_chan, dma_ctx->dmadesc_rx);
spi_dma_reset(dma_ctx->tx_dma_chan);
spi_hal_hw_prepare_tx(hal->hw);
spi_dma_start(dma_ctx->tx_dma_chan, dma_ctx->dmadesc_tx);
}
static void SPI_MASTER_ISR_ATTR s_spi_dma_prepare_data(spi_host_t *host, spi_hal_context_t *hal, const spi_hal_dev_config_t *dev, const spi_hal_trans_config_t *trans)
{
const spi_dma_ctx_t *dma_ctx = host->dma_ctx;
@ -1510,6 +1526,10 @@ esp_err_t spi_bus_get_max_transaction_len(spi_host_device_t host_id, size_t *max
return ESP_OK;
}
intr_handle_t spi_bus_get_intr(spi_host_device_t host) {
return bus_driver_ctx[host]->intr;
}
#if SOC_SPI_SCT_SUPPORTED
/*-----------------------------------------------------------