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| author | Scott Shawcroft <scott@adafruit.com> | 2020-10-28 14:45:29 -0700 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2020-10-28 14:45:29 -0700 |
| commit | 7cbc50962beac17f07162e75be7f041f1b11671f (patch) | |
| tree | e33781989f89cc819faca2e1b6e0546fc353b9bd /ports/esp32s2/common-hal | |
| parent | 557a58b244b19846472113fb90777303604f7f67 (diff) | |
| parent | 54c0e98a37fc3c997d3a7a566a67e33d1636f46a (diff) | |
Merge pull request #3611 from tannewt/esp32s2_eink_portal
Add Adafruit ESP EInk Portal and grayscale EInk support
Diffstat (limited to 'ports/esp32s2/common-hal')
| -rw-r--r-- | ports/esp32s2/common-hal/busio/SPI.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/ports/esp32s2/common-hal/busio/SPI.c b/ports/esp32s2/common-hal/busio/SPI.c index 1906ca6f0..490419f34 100644 --- a/ports/esp32s2/common-hal/busio/SPI.c +++ b/ports/esp32s2/common-hal/busio/SPI.c @@ -357,6 +357,9 @@ bool common_hal_busio_spi_transfer(busio_spi_obj_t *self, const uint8_t *data_ou } else { hal->dma_enabled = 0; burst_length = sizeof(hal->hw->data_buf); + // When switching to non-DMA, we need to make sure DMA is off. Otherwise, + // the S2 will transmit zeroes instead of our data. + spi_ll_txdma_disable(hal->hw); } // This rounds up. |