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Fix spiTransaction not updating clock line immediately (backport of #9333 into v2.x branch) #10697

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Merged
merged 1 commit into from
Dec 9, 2024
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Fix spiTransaction not updating clock line immediately (backport of #9333 into v2.x branch) #10697

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5 changes: 5 additions & 0 deletions cores/esp32/esp32-hal-spi.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1135,6 +1135,11 @@ void spiTransaction(spi_t * spi, uint32_t clockDiv, uint8_t dataMode, uint8_t bi
spi->dev->ctrl.wr_bit_order = 1;
spi->dev->ctrl.rd_bit_order = 1;
}
#if CONFIG_IDF_TARGET_ESP32C3 || CONFIG_IDF_TARGET_ESP32S3
// Sync new config with hardware, backported from https://github.com/espressif/arduino-esp32/pull/9333
spi->dev->cmd.update = 1;
while (spi->dev->cmd.update);
#endif
}

void spiSimpleTransaction(spi_t * spi)
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