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[WIP] Adds bus acquire/release semantics to SPI start/stop. (#23439)

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Nick Brassel 2024-07-18 08:59:08 +10:00 committed by GitHub
parent e69be076fc
commit daa777d6fb
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1 changed files with 9 additions and 0 deletions
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9
platforms/chibios/drivers/spi_master.c
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@ -64,9 +64,14 @@ __attribute__((weak)) void spi_init(void) {
} }
bool spi_start(pin_t slavePin, bool lsbFirst, uint8_t mode, uint16_t divisor) { bool spi_start(pin_t slavePin, bool lsbFirst, uint8_t mode, uint16_t divisor) {
#if (SPI_USE_MUTUAL_EXCLUSION == TRUE)
spiAcquireBus(&SPI_DRIVER);
#endif // (SPI_USE_MUTUAL_EXCLUSION == TRUE)
if (spiStarted) { if (spiStarted) {
return false; return false;
} }
#if SPI_SELECT_MODE != SPI_SELECT_MODE_NONE #if SPI_SELECT_MODE != SPI_SELECT_MODE_NONE
if (slavePin == NO_PIN) { if (slavePin == NO_PIN) {
return false; return false;
@ -326,4 +331,8 @@ void spi_stop(void) {
spiStop(&SPI_DRIVER); spiStop(&SPI_DRIVER);
spiStarted = false; spiStarted = false;
} }
#if (SPI_USE_MUTUAL_EXCLUSION == TRUE)
spiReleaseBus(&SPI_DRIVER);
#endif // (SPI_USE_MUTUAL_EXCLUSION == TRUE)
} }