diff options
| -rw-r--r-- | ports/esp32/machine_hw_spi.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/ports/esp32/machine_hw_spi.c b/ports/esp32/machine_hw_spi.c index d011ce53e3..560d19a5aa 100644 --- a/ports/esp32/machine_hw_spi.c +++ b/ports/esp32/machine_hw_spi.c @@ -186,9 +186,16 @@ STATIC void machine_hw_spi_init_internal( }; //Initialize the SPI bus - // FIXME: Does the DMA matter? There are two - ret = spi_bus_initialize(self->host, &buscfg, 1); + // Select DMA channel based on the hardware SPI host + int dma_chan = 0; + if (self->host == HSPI_HOST) { + dma_chan = 1; + } else if (self->host == VSPI_HOST) { + dma_chan = 2; + } + + ret = spi_bus_initialize(self->host, &buscfg, dma_chan); switch (ret) { case ESP_ERR_INVALID_ARG: mp_raise_msg(&mp_type_OSError, "invalid configuration"); |