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Code Issues Wiki Activity

Check if a CS pin is already owned by somebody else

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This commit is contained in:
jflyper 2018-04-27 09:46:36 +09:00
parent c0b27e6d0c
commit ddd0dd14c8
1 changed files with 8 additions and 2 deletions
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10
src/main/drivers/flash.c
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@ -46,14 +46,20 @@ static flashDevice_t flashDevice;
bool flashInit(const flashConfig_t *flashConfig) bool flashInit(const flashConfig_t *flashConfig)
{ {
busdev = &busInstance; busdev = &busInstance;
busdev->bustype = BUSTYPE_SPI;
spiBusSetInstance(busdev, spiInstanceByDevice(SPI_CFG_TO_DEV(flashConfig->spiDevice)));
if (flashConfig->csTag) { if (flashConfig->csTag) {
busdev->busdev_u.spi.csnPin = IOGetByTag(flashConfig->csTag); busdev->busdev_u.spi.csnPin = IOGetByTag(flashConfig->csTag);
} else { } else {
return false; return false;
} }
if (IOGetOwner(busdev->busdev_u.spi.csnPin) != OWNER_SPI_PREINIT) {
return false;
}
busdev->bustype = BUSTYPE_SPI;
spiBusSetInstance(busdev, spiInstanceByDevice(SPI_CFG_TO_DEV(flashConfig->spiDevice)));
IOInit(busdev->busdev_u.spi.csnPin, OWNER_FLASH_CS, 0); IOInit(busdev->busdev_u.spi.csnPin, OWNER_FLASH_CS, 0);
IOConfigGPIO(busdev->busdev_u.spi.csnPin, SPI_IO_CS_CFG); IOConfigGPIO(busdev->busdev_u.spi.csnPin, SPI_IO_CS_CFG);
IOHi(busdev->busdev_u.spi.csnPin); IOHi(busdev->busdev_u.spi.csnPin);