diff options
Diffstat (limited to 'platforms/chibios/drivers/spi_master.c')
| -rw-r--r-- | platforms/chibios/drivers/spi_master.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/platforms/chibios/drivers/spi_master.c b/platforms/chibios/drivers/spi_master.c index 57fc53d49f..fcdbc9ecf0 100644 --- a/platforms/chibios/drivers/spi_master.c +++ b/platforms/chibios/drivers/spi_master.c @@ -64,9 +64,14 @@ __attribute__((weak)) void spi_init(void) { } 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) { return false; } + #if SPI_SELECT_MODE != SPI_SELECT_MODE_NONE if (slavePin == NO_PIN) { return false; @@ -326,4 +331,8 @@ void spi_stop(void) { spiStop(&SPI_DRIVER); spiStarted = false; } + +#if (SPI_USE_MUTUAL_EXCLUSION == TRUE) + spiReleaseBus(&SPI_DRIVER); +#endif // (SPI_USE_MUTUAL_EXCLUSION == TRUE) } |