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OP-1312 remove boilerplate from config using macros.

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Use four locations for ch1+update dma source to exploit fifo and memory read bursts
This commit is contained in:
Alessio Morale 2014-05-01 10:33:44 +02:00
parent 4cece04166
commit 3897106f4d
4 changed files with 103 additions and 192 deletions
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54
flight/pios/inc/pios_ws2811.h
View File

@ -44,6 +44,60 @@
#define PIOS_WS2811_PERIPHERALDATASIZE DMA_PeripheralDataSize_HalfWord
#define PIOS_WS2811_TIM_PERIOD 20
#define PIOS_WS2811_DMA_CH1_CONFIG(channel) \
{ \
.DMA_BufferSize = 4, \
.DMA_Channel = channel, \
.DMA_DIR = DMA_DIR_MemoryToPeripheral, \
.DMA_FIFOMode = DMA_FIFOMode_Enable, \
.DMA_FIFOThreshold = DMA_FIFOThreshold_Full, \
.DMA_Memory0BaseAddr = 0, \
.DMA_MemoryBurst = DMA_MemoryBurst_INC4, \
.DMA_MemoryDataSize = PIOS_WS2811_MEMORYDATASIZE, \
.DMA_MemoryInc = DMA_MemoryInc_Enable, \
.DMA_Mode = DMA_Mode_Circular, \
.DMA_PeripheralBaseAddr = 0, \
.DMA_PeripheralBurst = DMA_PeripheralBurst_Single, \
.DMA_PeripheralDataSize = PIOS_WS2811_PERIPHERALDATASIZE, \
.DMA_PeripheralInc = DMA_PeripheralInc_Disable, \
.DMA_Priority = DMA_Priority_VeryHigh, }
#define PIOS_WS2811_DMA_CH2_CONFIG(channel) \
{ \
.DMA_BufferSize = 4, \
.DMA_Channel = channel, \
.DMA_DIR = DMA_DIR_MemoryToPeripheral, \
.DMA_FIFOMode = DMA_FIFOMode_Enable, \
.DMA_FIFOThreshold = DMA_FIFOThreshold_Full, \
.DMA_Memory0BaseAddr = 0, \
.DMA_MemoryBurst = DMA_MemoryBurst_INC4, \
.DMA_MemoryDataSize = PIOS_WS2811_MEMORYDATASIZE, \
.DMA_MemoryInc = DMA_MemoryInc_Enable, \
.DMA_Mode = DMA_Mode_Circular, \
.DMA_PeripheralBaseAddr = 0, \
.DMA_PeripheralBurst = DMA_PeripheralBurst_Single, \
.DMA_PeripheralDataSize = PIOS_WS2811_PERIPHERALDATASIZE, \
.DMA_PeripheralInc = DMA_PeripheralInc_Disable, \
.DMA_Priority = DMA_Priority_High }
#define PIOS_WS2811_DMA_UPDATE_CONFIG(channel) \
{ \
.DMA_BufferSize = PIOS_WS2811_BUFFER_SIZE, \
.DMA_Channel = channel, \
.DMA_DIR = DMA_DIR_MemoryToPeripheral, \
.DMA_FIFOMode = DMA_FIFOMode_Enable, \
.DMA_FIFOThreshold = DMA_FIFOThreshold_HalfFull, \
.DMA_Memory0BaseAddr = 0, \
.DMA_MemoryBurst = DMA_MemoryBurst_INC4, \
.DMA_MemoryDataSize = PIOS_WS2811_MEMORYDATASIZE, \
.DMA_MemoryInc = DMA_MemoryInc_Enable, \
.DMA_Mode = DMA_Mode_Circular, \
.DMA_PeripheralBaseAddr = 0, \
.DMA_PeripheralBurst = DMA_PeripheralBurst_Single, \
.DMA_PeripheralDataSize = PIOS_WS2811_PERIPHERALDATASIZE, \
.DMA_PeripheralInc = DMA_PeripheralInc_Disable, \
.DMA_Priority = DMA_Priority_VeryHigh, }
typedef uint16_t ledbuf_t;
typedef struct Color Color;

103
flight/pios/stm32f4xx/pios_ws2811.c
View File

@ -39,7 +39,7 @@
// framebuffer
static ledbuf_t *fb = 0;
// bitmask with pin to be set/reset using dma
static ledbuf_t dmaSource;
static ledbuf_t dmaSource[4];
static const struct pios_ws2811_cfg *pios_ws2811_cfg;
static const struct pios_ws2811_pin_cfg *pios_ws2811_pin_cfg;
@ -55,15 +55,15 @@ static void genericTIM_OCxPreloadConfig(TIM_TypeDef *TIMx, uint16_t TIM_OCPreloa
/* Example configuration fragment for REVOLUTION
#ifdef PIOS_INCLUDE_WS2811
#include <pios_ws2811.h>
#include <hwsettings.h>
#define PIOS_WS2811_TIM_DIVIDER (PIOS_PERIPHERAL_APB2_CLOCK / (800000 * PIOS_WS2811_TIM_PERIOD))
#ifdef PIOS_INCLUDE_WS2811
#include <pios_ws2811.h>
#include <hwsettings.h>
#define PIOS_WS2811_TIM_DIVIDER (PIOS_PERIPHERAL_APB2_CLOCK / (800000 * PIOS_WS2811_TIM_PERIOD))
// interrupt vector for DMA streamCh1
void DMA2_Stream1_IRQHandler(void) __attribute__((alias("PIOS_WS2811_irq_handler")));
// interrupt vector for DMA streamCh1
void DMA2_Stream1_IRQHandler(void) __attribute__((alias("PIOS_WS2811_irq_handler")));
const struct pios_ws2811_pin_cfg pios_ws2811_pin_cfg[] = {
const struct pios_ws2811_pin_cfg pios_ws2811_pin_cfg[] = {
[HWSETTINGS_WS2811LED_OUT_SERVOOUT1] = {
.gpio = GPIOB,
.gpioInit = {
@ -83,9 +83,9 @@ const struct pios_ws2811_pin_cfg pios_ws2811_pin_cfg[] = {
.GPIO_OType = GPIO_OType_PP,
},
},
};
};
const struct pios_ws2811_cfg pios_ws2811_cfg = {
const struct pios_ws2811_cfg pios_ws2811_cfg = {
.timer = TIM1,
.timerInit = {
.TIM_Prescaler = PIOS_WS2811_TIM_DIVIDER - 1,
@ -104,67 +104,19 @@ const struct pios_ws2811_cfg pios_ws2811_cfg = {
// DMA streamCh1, triggered by timerCh1 pwm signal.
// if FrameBuffer indicates, reset output value early to indicate "0" bit to ws2812
.dmaInitCh1 = {
.DMA_BufferSize = PIOS_WS2811_BUFFER_SIZE,
.DMA_Channel = DMA_Channel_6,
.DMA_DIR = DMA_DIR_MemoryToPeripheral,
.DMA_FIFOMode = DMA_FIFOMode_Enable,
.DMA_FIFOThreshold = DMA_FIFOThreshold_HalfFull,
.DMA_Memory0BaseAddr = 0,
.DMA_MemoryBurst = DMA_MemoryBurst_Single,
.DMA_MemoryDataSize = PIOS_WS2811_MEMORYDATASIZE,
.DMA_MemoryInc = DMA_MemoryInc_Enable,
.DMA_Mode = DMA_Mode_Circular,
.DMA_PeripheralBaseAddr = 0,
.DMA_PeripheralBurst = DMA_PeripheralBurst_Single,
.DMA_PeripheralDataSize = PIOS_WS2811_PERIPHERALDATASIZE,
.DMA_PeripheralInc = DMA_PeripheralInc_Disable,
.DMA_Priority = DMA_Priority_VeryHigh,
},
.dmaInitCh1 = PIOS_WS2811_DMA_UPDATE_CONFIG(DMA_Channel_6),
.dmaItCh1 = DMA_IT_TEIF1 | DMA_IT_TCIF1,
// DMA streamCh2, triggered by timerCh2 pwm signal.
// Reset output value late to indicate "1" bit to ws2812.
.dmaInitCh2 = {
.DMA_BufferSize = 1,
.DMA_Channel = DMA_Channel_6,
.DMA_DIR = DMA_DIR_MemoryToPeripheral,
.DMA_FIFOMode = DMA_FIFOMode_Enable,
.DMA_FIFOThreshold = DMA_FIFOThreshold_HalfFull,
.DMA_Memory0BaseAddr = 0,
.DMA_MemoryBurst = DMA_MemoryBurst_Single,
.DMA_MemoryDataSize = PIOS_WS2811_MEMORYDATASIZE,
.DMA_MemoryInc = DMA_MemoryInc_Disable,
.DMA_Mode = DMA_Mode_Circular,
.DMA_PeripheralBaseAddr = 0,
.DMA_PeripheralBurst = DMA_PeripheralBurst_Single,
.DMA_PeripheralDataSize = PIOS_WS2811_PERIPHERALDATASIZE,
.DMA_PeripheralInc = DMA_PeripheralInc_Disable,
.DMA_Priority = DMA_Priority_VeryHigh,
},
.dmaItCh2 = DMA_IT_TEIF2 | DMA_IT_TCIF2,
.dmaInitCh2 = PIOS_WS2811_DMA_CH1_CONFIG(DMA_Channel_6),
.dmaItCh2 = DMA_IT_TEIF6 | DMA_IT_TCIF6,
// DMA streamUpdate Triggered by timer update event
// Outputs a high logic level at beginning of a cycle
.dmaInitUpdate = {
.DMA_BufferSize = 1,
.DMA_Channel = DMA_Channel_6,
.DMA_DIR = DMA_DIR_MemoryToPeripheral,
.DMA_FIFOMode = DMA_FIFOMode_Enable,
.DMA_FIFOThreshold = DMA_FIFOThreshold_HalfFull,
.DMA_Memory0BaseAddr = 0,
.DMA_MemoryBurst = DMA_MemoryBurst_Single,
.DMA_MemoryDataSize = PIOS_WS2811_MEMORYDATASIZE,
.DMA_MemoryInc = DMA_MemoryInc_Disable,
.DMA_Mode = DMA_Mode_Circular,
.DMA_PeripheralBaseAddr = 0,
.DMA_PeripheralBurst = DMA_PeripheralBurst_Single,
.DMA_PeripheralDataSize = PIOS_WS2811_PERIPHERALDATASIZE,
.DMA_PeripheralInc = DMA_PeripheralInc_Disable,
.DMA_Priority = DMA_Priority_High
},
.dmaItUpdate = DMA_IT_TEIF6 | DMA_IT_TCIF6,
.dmaSource = TIM_DMA_CC1 | TIM_DMA_CC3 | TIM_DMA_Update,
.dmaInitUpdate = PIOS_WS2811_DMA_CH2_CONFIG(DMA_Channel_6),
.dmaItUpdate = DMA_IT_TEIF5 | DMA_IT_TCIF5,
.dmaSource = TIM_DMA_CC1 | TIM_DMA_CC3 | TIM_DMA_Update,
// DMA streamCh1 interrupt vector, used to block timer at end of framebuffer transfer
.irq = {
@ -176,15 +128,15 @@ const struct pios_ws2811_cfg pios_ws2811_cfg = {
.NVIC_IRQChannelCmd = ENABLE,
},
},
};
};
void PIOS_WS2811_irq_handler(void)
{
void PIOS_WS2811_irq_handler(void)
{
PIOS_WS2811_DMA_irq_handler();
}
#endif // PIOS_INCLUDE_WS2811
}
#endif // PIOS_INCLUDE_WS2811
*/
*/
/*
* How it works:
@ -219,8 +171,9 @@ void PIOS_WS2811_Init(const struct pios_ws2811_cfg *ws2811_cfg, const struct pio
pios_ws2811_pin_cfg = ws2811_pin_cfg;
pios_ws2811_cfg = ws2811_cfg;
GPIO_Init(pios_ws2811_pin_cfg->gpio, &pios_ws2811_pin_cfg->gpioInit);
dmaSource = (ledbuf_t)pios_ws2811_pin_cfg->gpioInit.GPIO_Pin;
for (uint8_t i = 0; i < 4; i++) {
dmaSource[i] = (ledbuf_t)pios_ws2811_pin_cfg->gpioInit.GPIO_Pin;
}
fb = (ledbuf_t *)pvPortMalloc(PIOS_WS2811_BUFFER_SIZE * sizeof(ledbuf_t));
memset(fb, 0, PIOS_WS2811_BUFFER_SIZE * sizeof(ledbuf_t));
@ -319,11 +272,11 @@ void setupDMA()
DMA_Init(pios_ws2811_cfg->streamCh2, (DMA_InitTypeDef *)&pios_ws2811_cfg->dmaInitCh2);
pios_ws2811_cfg->streamCh2->PAR = (uint32_t)&pios_ws2811_pin_cfg->gpio->BSRRH;
pios_ws2811_cfg->streamCh2->M0AR = (uint32_t)&dmaSource;
pios_ws2811_cfg->streamCh2->M0AR = (uint32_t)dmaSource;
DMA_Init(pios_ws2811_cfg->streamUpdate, (DMA_InitTypeDef *)&pios_ws2811_cfg->dmaInitUpdate);
pios_ws2811_cfg->streamUpdate->PAR = (uint32_t)&pios_ws2811_pin_cfg->gpio->BSRRL;
pios_ws2811_cfg->streamUpdate->M0AR = (uint32_t)&dmaSource;
pios_ws2811_cfg->streamUpdate->M0AR = (uint32_t)dmaSource;
DMA_ClearITPendingBit(pios_ws2811_cfg->streamCh1, pios_ws2811_cfg->dmaItCh1);
DMA_ClearITPendingBit(pios_ws2811_cfg->streamCh2, pios_ws2811_cfg->dmaItCh2);
@ -339,7 +292,7 @@ void setColor(uint8_t color, ledbuf_t *buf)
uint8_t i;
for (i = 0; i < 8; i++) {
buf[i] = ((color << i) & 0b10000000 ? 0x0 : dmaSource);
buf[i] = ((color << i) & 0b10000000 ? 0x0 : dmaSource[0]);
}
}

76
flight/targets/boards/discoveryf4bare/board_hw_defs.c
View File

@ -55,7 +55,7 @@ static const struct pios_gpio pios_leds[] = {
},
.active_low = false
},
[PIOS_LED_D1] = {
[PIOS_LED_D1] = {
.pin = {
.gpio = GPIOD,
.init = {
@ -68,7 +68,7 @@ static const struct pios_gpio pios_leds[] = {
},
.active_low = false
},
[PIOS_LED_D2] = {
[PIOS_LED_D2] = {
.pin = {
.gpio = GPIOD,
.init = {
@ -91,7 +91,7 @@ static const struct pios_gpio_cfg pios_led_cfg = {
const struct pios_gpio_cfg *PIOS_BOARD_HW_DEFS_GetLedCfg(__attribute__((unused)) uint32_t board_revision)
{
return &pios_led_cfg;
return &pios_led_cfg;
}
#endif /* PIOS_INCLUDE_LED */
@ -1812,7 +1812,7 @@ const struct pios_usb_hid_cfg pios_usb_hid_cfg = {
#endif /* PIOS_INCLUDE_USB_HID && PIOS_INCLUDE_USB_CDC */
#ifdef PIOS_INCLUDE_WS2811
#include <pios_ws2811.h>
#define PIOS_WS2811_TIM_DIVIDER (PIOS_PERIPHERAL_APB2_CLOCK / (800000 * PIOS_WS2811_TIM_PERIOD))
#define PIOS_WS2811_TIM_DIVIDER (PIOS_PERIPHERAL_APB2_CLOCK / (800000 * PIOS_WS2811_TIM_PERIOD))
void DMA2_Stream1_IRQHandler(void) __attribute__((alias("PIOS_WS2811_irq_handler")));
@ -1833,7 +1833,7 @@ const struct pios_ws2811_cfg pios_ws2811_cfg = {
.TIM_ClockDivision = TIM_CKD_DIV1,
.TIM_CounterMode = TIM_CounterMode_Up,
// period (1.25 uS per period
.TIM_Period = PIOS_WS2811_TIM_PERIOD,
.TIM_Period = PIOS_WS2811_TIM_PERIOD,
.TIM_RepetitionCounter = 0x0000,
},
@ -1845,70 +1845,22 @@ const struct pios_ws2811_cfg pios_ws2811_cfg = {
// DMA streamCh1, triggered by timerCh1 pwm signal.
// if FrameBuffer indicates, reset output value early to indicate "0" bit to ws2812
.dmaInitCh1 = {
.DMA_BufferSize = PIOS_WS2811_BUFFER_SIZE,
.DMA_Channel = DMA_Channel_6,
.DMA_DIR = DMA_DIR_MemoryToPeripheral,
.DMA_FIFOMode = DMA_FIFOMode_Enable,
.DMA_FIFOThreshold = DMA_FIFOThreshold_HalfFull,
.DMA_Memory0BaseAddr = 0,
.DMA_MemoryBurst = DMA_MemoryBurst_Single,
.DMA_MemoryDataSize = PIOS_WS2811_MEMORYDATASIZE,
.DMA_MemoryInc = DMA_MemoryInc_Enable,
.DMA_Mode = DMA_Mode_Circular,
.DMA_PeripheralBaseAddr = 0,
.DMA_PeripheralBurst = DMA_PeripheralBurst_Single,
.DMA_PeripheralDataSize = PIOS_WS2811_PERIPHERALDATASIZE,
.DMA_PeripheralInc = DMA_PeripheralInc_Disable,
.DMA_Priority = DMA_Priority_Medium,
},
.dmaItCh1 = DMA_IT_TEIF1 | DMA_IT_TCIF1,
.dmaInitCh1 = PIOS_WS2811_DMA_UPDATE_CONFIG(DMA_Channel_6),
.dmaItCh1 = DMA_IT_TEIF1 | DMA_IT_TCIF1,
// DMA streamCh2, triggered by timerCh2 pwm signal.
// Reset output value late to indicate "1" bit to ws2812.
.dmaInitCh2 = {
.DMA_BufferSize = 1,
.DMA_Channel = DMA_Channel_6,
.DMA_DIR = DMA_DIR_MemoryToPeripheral,
.DMA_FIFOMode = DMA_FIFOMode_Enable,
.DMA_FIFOThreshold = DMA_FIFOThreshold_HalfFull,
.DMA_Memory0BaseAddr = 0,
.DMA_MemoryBurst = DMA_MemoryBurst_Single,
.DMA_MemoryDataSize = PIOS_WS2811_MEMORYDATASIZE,
.DMA_MemoryInc = DMA_MemoryInc_Disable,
.DMA_Mode = DMA_Mode_Circular,
.DMA_PeripheralBaseAddr = 0,
.DMA_PeripheralBurst = DMA_PeripheralBurst_Single,
.DMA_PeripheralDataSize = PIOS_WS2811_PERIPHERALDATASIZE,
.DMA_PeripheralInc = DMA_PeripheralInc_Disable,
.DMA_Priority = DMA_Priority_Medium,
},
.dmaItCh2 = DMA_IT_TEIF2 | DMA_IT_TCIF2,
.dmaInitCh2 = PIOS_WS2811_DMA_CH1_CONFIG(DMA_Channel_6),
.dmaItCh2 = DMA_IT_TEIF6 | DMA_IT_TCIF6,
// DMA streamUpdate Triggered by timer update event
// Outputs a high logic level at beginning of a cycle
.dmaInitUpdate = {
.DMA_BufferSize = 1,
.DMA_Channel = DMA_Channel_6,
.DMA_DIR = DMA_DIR_MemoryToPeripheral,
.DMA_FIFOMode = DMA_FIFOMode_Enable,
.DMA_FIFOThreshold = DMA_FIFOThreshold_HalfFull,
.DMA_Memory0BaseAddr = 0,
.DMA_MemoryBurst = DMA_MemoryBurst_Single,
.DMA_MemoryDataSize = PIOS_WS2811_MEMORYDATASIZE,
.DMA_MemoryInc = DMA_MemoryInc_Disable,
.DMA_Mode = DMA_Mode_Circular,
.DMA_PeripheralBaseAddr = 0,
.DMA_PeripheralBurst = DMA_PeripheralBurst_Single,
.DMA_PeripheralDataSize = PIOS_WS2811_PERIPHERALDATASIZE,
.DMA_PeripheralInc = DMA_PeripheralInc_Disable,
.DMA_Priority = DMA_Priority_Low
},
.dmaItUpdate = DMA_IT_TEIF6 | DMA_IT_TCIF6,
.dmaSource = TIM_DMA_CC1 | TIM_DMA_CC3 | TIM_DMA_Update,
.dmaInitUpdate = PIOS_WS2811_DMA_CH2_CONFIG(DMA_Channel_6),
.dmaItUpdate = DMA_IT_TEIF5 | DMA_IT_TCIF5,
.dmaSource = TIM_DMA_CC1 | TIM_DMA_CC3 | TIM_DMA_Update,
// DMA streamCh1 interrupt vector, used to block timer at end of framebuffer transfer
.irq = {
.irq = {
.flags = (DMA_IT_TCIF1),
.init = {
.NVIC_IRQChannel = DMA2_Stream1_IRQn,
@ -1923,4 +1875,4 @@ void PIOS_WS2811_irq_handler(void)
{
PIOS_WS2811_DMA_irq_handler();
}
#endif //PIOS_INCLUDE_WS2811
#endif // PIOS_INCLUDE_WS2811

62
flight/targets/boards/revolution/board_hw_defs.c
View File

@ -2066,70 +2066,22 @@ const struct pios_ws2811_cfg pios_ws2811_cfg = {
// DMA streamCh1, triggered by timerCh1 pwm signal.
// if FrameBuffer indicates, reset output value early to indicate "0" bit to ws2812
.dmaInitCh1 = {
.DMA_BufferSize = PIOS_WS2811_BUFFER_SIZE,
.DMA_Channel = DMA_Channel_6,
.DMA_DIR = DMA_DIR_MemoryToPeripheral,
.DMA_FIFOMode = DMA_FIFOMode_Enable,
.DMA_FIFOThreshold = DMA_FIFOThreshold_HalfFull,
.DMA_Memory0BaseAddr = 0,
.DMA_MemoryBurst = DMA_MemoryBurst_Single,
.DMA_MemoryDataSize = PIOS_WS2811_MEMORYDATASIZE,
.DMA_MemoryInc = DMA_MemoryInc_Enable,
.DMA_Mode = DMA_Mode_Circular,
.DMA_PeripheralBaseAddr = 0,
.DMA_PeripheralBurst = DMA_PeripheralBurst_Single,
.DMA_PeripheralDataSize = PIOS_WS2811_PERIPHERALDATASIZE,
.DMA_PeripheralInc = DMA_PeripheralInc_Disable,
.DMA_Priority = DMA_Priority_VeryHigh,
},
.dmaInitCh1 = PIOS_WS2811_DMA_UPDATE_CONFIG(DMA_Channel_6),
.dmaItCh1 = DMA_IT_TEIF1 | DMA_IT_TCIF1,
// DMA streamCh2, triggered by timerCh2 pwm signal.
// Reset output value late to indicate "1" bit to ws2812.
.dmaInitCh2 = {
.DMA_BufferSize = 1,
.DMA_Channel = DMA_Channel_6,
.DMA_DIR = DMA_DIR_MemoryToPeripheral,
.DMA_FIFOMode = DMA_FIFOMode_Enable,
.DMA_FIFOThreshold = DMA_FIFOThreshold_HalfFull,
.DMA_Memory0BaseAddr = 0,
.DMA_MemoryBurst = DMA_MemoryBurst_Single,
.DMA_MemoryDataSize = PIOS_WS2811_MEMORYDATASIZE,
.DMA_MemoryInc = DMA_MemoryInc_Disable,
.DMA_Mode = DMA_Mode_Circular,
.DMA_PeripheralBaseAddr = 0,
.DMA_PeripheralBurst = DMA_PeripheralBurst_Single,
.DMA_PeripheralDataSize = PIOS_WS2811_PERIPHERALDATASIZE,
.DMA_PeripheralInc = DMA_PeripheralInc_Disable,
.DMA_Priority = DMA_Priority_VeryHigh,
},
.dmaItCh2 = DMA_IT_TEIF2 | DMA_IT_TCIF2,
.dmaInitCh2 = PIOS_WS2811_DMA_CH1_CONFIG(DMA_Channel_6),
.dmaItCh2 = DMA_IT_TEIF6 | DMA_IT_TCIF6,
// DMA streamUpdate Triggered by timer update event
// Outputs a high logic level at beginning of a cycle
.dmaInitUpdate = {
.DMA_BufferSize = 1,
.DMA_Channel = DMA_Channel_6,
.DMA_DIR = DMA_DIR_MemoryToPeripheral,
.DMA_FIFOMode = DMA_FIFOMode_Enable,
.DMA_FIFOThreshold = DMA_FIFOThreshold_HalfFull,
.DMA_Memory0BaseAddr = 0,
.DMA_MemoryBurst = DMA_MemoryBurst_Single,
.DMA_MemoryDataSize = PIOS_WS2811_MEMORYDATASIZE,
.DMA_MemoryInc = DMA_MemoryInc_Disable,
.DMA_Mode = DMA_Mode_Circular,
.DMA_PeripheralBaseAddr = 0,
.DMA_PeripheralBurst = DMA_PeripheralBurst_Single,
.DMA_PeripheralDataSize = PIOS_WS2811_PERIPHERALDATASIZE,
.DMA_PeripheralInc = DMA_PeripheralInc_Disable,
.DMA_Priority = DMA_Priority_High
},
.dmaItUpdate = DMA_IT_TEIF6 | DMA_IT_TCIF6,
.dmaSource = TIM_DMA_CC1 | TIM_DMA_CC3 | TIM_DMA_Update,
.dmaInitUpdate = PIOS_WS2811_DMA_CH2_CONFIG(DMA_Channel_6),
.dmaItUpdate = DMA_IT_TEIF5 | DMA_IT_TCIF5,
.dmaSource = TIM_DMA_CC1 | TIM_DMA_CC3 | TIM_DMA_Update,
// DMAInitCh1 interrupt vector, used to block timer at end of framebuffer transfer
.irq = {
.irq = {
.flags = (DMA_IT_TCIF1),
.init = {
.NVIC_IRQChannel = DMA2_Stream1_IRQn,