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Initial implementation of DSHOT protocol (600 and 150)

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This commit is contained in:
blckmn 2016-10-13 22:03:37 +11:00
parent 7db9b9cbc7
commit 4e529642d1
22 changed files with 637 additions and 100 deletions
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48
src/main/drivers/timer_stm32f4xx.c
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@ -58,6 +58,54 @@ const timerDef_t timerDefinitions[HARDWARE_TIMER_DEFINITION_COUNT] = {
{ .TIMx = TIM14, .rcc = RCC_APB1(TIM14) },
};
/*
need a mapping from dma and timers to pins, and the values should all be set here to the dmaMotors array.
this mapping could be used for both these motors and for led strip.
only certain pins have OC output (already used in normal PWM et al) but then
there are only certain DMA streams/channels available for certain timers and channels.
*** (this may highlight some hardware limitations on some targets) ***
DMA1
Channel Stream0 Stream1 Stream2 Stream3 Stream4 Stream5 Stream6 Stream7
0
1
2 TIM4_CH1 TIM4_CH2 TIM4_CH3
3 TIM2_CH3 TIM2_CH1 TIM2_CH1 TIM2_CH4
TIM2_CH4
4
5 TIM3_CH4 TIM3_CH1 TIM3_CH2 TIM3_CH3
6 TIM5_CH3 TIM5_CH4 TIM5_CH1 TIM5_CH4 TIM5_CH2
7
DMA2
Channel Stream0 Stream1 Stream2 Stream3 Stream4 Stream5 Stream6 Stream7
0 TIM8_CH1 TIM1_CH1
TIM8_CH2 TIM1_CH2
TIM8_CH3 TIM1_CH3
1
2
3
4
5
6 TIM1_CH1 TIM1_CH2 TIM1_CH1 TIM1_CH4 TIM1_CH3
7 TIM8_CH1 TIM8_CH2 TIM8_CH3 TIM8_CH4
*/
uint8_t timerClockDivisor(TIM_TypeDef *tim)
{
#if defined (STM32F40_41xxx)
if (tim == TIM8) return 1;
#endif
if (tim == TIM1 || tim == TIM9 || tim == TIM10 || tim == TIM11) {
return 1;
} else {
return 2;
}
}
void TIM_SelectOCxM_NoDisable(TIM_TypeDef* TIMx, uint16_t TIM_Channel, uint16_t TIM_OCMode)
{
uint32_t tmp = 0;