varl/qmk_firmware
1
0
Fork 0
forked from forks/qmk_firmware
Code Pull requests Activity

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

Browse source
This commit is contained in:
Nick Brassel 2024-07-18 08:59:08 +10:00 committed by GitHub
parent e69be076fc
commit daa777d6fb
No known key found for this signature in database
GPG key ID: B5690EEEBB952194
1 changed files with 9 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

9
platforms/chibios/drivers/spi_master.c
View file

@ -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)
}