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SPI: fix compilation on F4 when DSHOT_BITBANG is not used

This commit is contained in:
Martin Luessi 2021-12-27 11:59:53 -08:00
parent 5933d96bc3
commit d464dd7378
1 changed files with 3 additions and 3 deletions
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6
src/main/drivers/bus_spi.c
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@ -570,7 +570,7 @@ bool spiSetBusInstance(extDevice_t *dev, uint32_t device)
void spiInitBusDMA()
{
uint32_t device;
#ifdef STM32F4
#if defined(STM32F4) && defined(USE_DSHOT_BITBANG)
/* Check https://www.st.com/resource/en/errata_sheet/dm00037591-stm32f405407xx-and-stm32f415417xx-device-limitations-stmicroelectronics.pdf
* section 2.1.10 which reports an errata that corruption may occurs on DMA2 if AHB peripherals (eg GPIO ports) are
* access concurrently with APB peripherals (eg SPI busses). Bitbang DSHOT uses DMA2 to write to GPIO ports. If this
@ -608,7 +608,7 @@ void spiInitBusDMA()
dmaTxIdentifier = DMA_NONE;
continue;
}
#ifdef STM32F4
#if defined(STM32F4) && defined(USE_DSHOT_BITBANG)
if (dshotBitbangActive && (DMA_DEVICE_NO(dmaTxIdentifier) == 2)) {
dmaTxIdentifier = DMA_NONE;
break;
@ -642,7 +642,7 @@ void spiInitBusDMA()
dmaRxIdentifier = DMA_NONE;
continue;
}
#ifdef STM32F4
#if defined(STM32F4) && defined(USE_DSHOT_BITBANG)
if (dshotBitbangActive && (DMA_DEVICE_NO(dmaRxIdentifier) == 2)) {
dmaRxIdentifier = DMA_NONE;
break;