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Code Issues Wiki Activity

Moving LED strip to be configurable via resource command

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This commit is contained in:
blckmn 2016-11-05 13:35:20 +11:00
parent 3b506415c9
commit e56f915018
18 changed files with 281 additions and 214 deletions
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53
src/main/drivers/light_ws2811strip_stm32f10x.c
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@ -30,8 +30,13 @@
#include "rcc.h"
#include "timer.h"
#define WS2811_TIMER_HZ 24000000
#define WS2811_TIMER_PERIOD 29
static IO_t ws2811IO = IO_NONE;
bool ws2811Initialised = false;
static DMA_Channel_TypeDef *dmaChannel = NULL;
static TIM_TypeDef *timer = NULL;
static void WS2811_DMA_IRQHandler(dmaChannelDescriptor_t *descriptor) {
if (DMA_GET_FLAG_STATUS(descriptor, DMA_IT_TCIF)) {
@ -41,32 +46,38 @@ static void WS2811_DMA_IRQHandler(dmaChannelDescriptor_t *descriptor) {
}
}
void ws2811LedStripHardwareInit(void)
void ws2811LedStripHardwareInit(ioTag_t ioTag)
{
if (!ioTag) {
return;
}
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
TIM_OCInitTypeDef TIM_OCInitStructure;
DMA_InitTypeDef DMA_InitStructure;
uint16_t prescalerValue;
const timerHardware_t *timerHardware = timerGetByTag(ioTag, TIM_USE_ANY);
timer = timerHardware->tim;
dmaSetHandler(WS2811_DMA_HANDLER_IDENTIFER, WS2811_DMA_IRQHandler, NVIC_PRIO_WS2811_DMA, 0);
if (timerHardware->dmaChannel == NULL) {
return;
}
ws2811IO = IOGetByTag(IO_TAG(WS2811_PIN));
/* GPIOA Configuration: TIM5 Channel 1 as alternate function push-pull */
IOInit(ws2811IO, OWNER_LED_STRIP, RESOURCE_OUTPUT, 0);
IOConfigGPIO(ws2811IO, IO_CONFIG(GPIO_Speed_50MHz, GPIO_Mode_AF_PP));
RCC_ClockCmd(timerRCC(WS2811_TIMER), ENABLE);
/* Compute the prescaler value */
prescalerValue = (uint16_t) (SystemCoreClock / 24000000) - 1;
uint16_t prescalerValue = (uint16_t) (SystemCoreClock / WS2811_TIMER_HZ) - 1;
/* Time base configuration */
TIM_TimeBaseStructInit(&TIM_TimeBaseStructure);
TIM_TimeBaseStructure.TIM_Period = 29; // 800kHz
TIM_TimeBaseStructure.TIM_Period = WS2811_TIMER_PERIOD; // 800kHz
TIM_TimeBaseStructure.TIM_Prescaler = prescalerValue;
TIM_TimeBaseStructure.TIM_ClockDivision = 0;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure);
TIM_TimeBaseInit(timer, &TIM_TimeBaseStructure);
/* PWM1 Mode configuration: Channel1 */
TIM_OCStructInit(&TIM_OCInitStructure);
@ -74,20 +85,17 @@ void ws2811LedStripHardwareInit(void)
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_Pulse = 0;
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
TIM_OC1Init(TIM3, &TIM_OCInitStructure);
TIM_OC1PreloadConfig(TIM3, TIM_OCPreload_Enable);
TIM_OC1Init(timer, &TIM_OCInitStructure);
TIM_OC1PreloadConfig(timer, TIM_OCPreload_Enable);
TIM_CtrlPWMOutputs(TIM3, ENABLE);
TIM_CtrlPWMOutputs(timer, ENABLE);
/* configure DMA */
/* DMA clock enable */
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE);
/* DMA1 Channel6 Config */
DMA_DeInit(DMA1_Channel6);
DMA_DeInit(dmaChannel);
DMA_StructInit(&DMA_InitStructure);
DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)&TIM3->CCR1;
DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)timerCCR(timer, timerHardware->channel);
DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)ledStripDMABuffer;
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralDST;
DMA_InitStructure.DMA_BufferSize = WS2811_DMA_BUFFER_SIZE;
@ -99,12 +107,13 @@ void ws2811LedStripHardwareInit(void)
DMA_InitStructure.DMA_Priority = DMA_Priority_High;
DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
DMA_Init(DMA1_Channel6, &DMA_InitStructure);
DMA_Init(dmaChannel, &DMA_InitStructure);
/* TIM3 CC1 DMA Request enable */
TIM_DMACmd(TIM3, TIM_DMA_CC1, ENABLE);
TIM_DMACmd(timer, timerDmaSource(timerHardware->channel), ENABLE);
DMA_ITConfig(DMA1_Channel6, DMA_IT_TC, ENABLE);
DMA_ITConfig(dmaChannel, DMA_IT_TC, ENABLE);
dmaSetHandler(timerHardware->dmaIrqHandler, WS2811_DMA_IRQHandler, NVIC_PRIO_WS2811_DMA, 0);
const hsvColor_t hsv_white = { 0, 255, 255};
ws2811Initialised = true;
@ -117,10 +126,10 @@ void ws2811LedStripDMAEnable(void)
if (!ws2811Initialised)
return;
DMA_SetCurrDataCounter(DMA1_Channel6, WS2811_DMA_BUFFER_SIZE); // load number of bytes to be transferred
TIM_SetCounter(TIM3, 0);
TIM_Cmd(TIM3, ENABLE);
DMA_Cmd(DMA1_Channel6, ENABLE);
DMA_SetCurrDataCounter(dmaChannel, WS2811_DMA_BUFFER_SIZE); // load number of bytes to be transferred
TIM_SetCounter(timer, 0);
TIM_Cmd(timer, ENABLE);
DMA_Cmd(dmaChannel, ENABLE);
}
#endif