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Code Issues Wiki Activity

Re-design DMA driver

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This commit is contained in:
Evgeny Sychov 2016-07-01 01:53:45 -07:00
parent 1c1dff4b12
commit 2d070a3507
16 changed files with 299 additions and 394 deletions
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20
src/main/drivers/max7456.c
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@ -30,6 +30,7 @@
#include "drivers/light_led.h"
#include "drivers/system.h"
#include "drivers/nvic.h"
#include "drivers/dma.h"
#include "max7456.h"
#include "max7456_symbols.h"
@ -119,8 +120,8 @@ static void max7456_send_dma(void* tx_buffer, void* rx_buffer, uint16_t buffer_s
SPI_I2S_DMAReq_Tx, ENABLE);
}
void MAX7456_DMA_IRQ_HANDLER_FUNCTION (void) {
if (DMA_GetFlagStatus(MAX7456_DMA_TC_FLAG)) {
void max7456_dma_irq_handler(dmaChannelDescriptor_t* descriptor) {
if (DMA_GET_FLAG_STATUS(descriptor, DMA_IT_TCIF)) {
#ifdef MAX7456_DMA_CHANNEL_RX
DMA_Cmd(MAX7456_DMA_CHANNEL_RX, DISABLE);
#else
@ -131,7 +132,7 @@ void MAX7456_DMA_IRQ_HANDLER_FUNCTION (void) {
#endif
DMA_Cmd(MAX7456_DMA_CHANNEL_TX, DISABLE);
DMA_ClearFlag(MAX7456_DMA_TC_FLAG);
DMA_CLEAR_FLAG(descriptor, DMA_IT_TCIF);
SPI_I2S_DMACmd(MAX7456_SPI_INSTANCE,
#ifdef MAX7456_DMA_CHANNEL_RX
@ -141,7 +142,7 @@ void MAX7456_DMA_IRQ_HANDLER_FUNCTION (void) {
DISABLE_MAX7456;
for (uint16_t x = 0; x < max_screen_size; x++)
max7456_screen[x + 3] = MAX7456ADD_DMDI;
max7456_screen[x + 3] = MAX7456_CHAR(' ');
dma_transaction_in_progress = 0;
}
}
@ -206,7 +207,7 @@ void max7456_init(uint8_t video_system)
delay(100);
for (x = 0; x < max_screen_size; x++)
SCREEN_BUFFER[x] = MAX7456_CHAR(0);
SCREEN_BUFFER[x] = MAX7456_CHAR(' ');
#ifdef MAX7456_DMA_CHANNEL_TX
max7456_screen[0] = (uint16_t)(MAX7456ADD_DMAH | (0 << 8));
@ -215,14 +216,7 @@ void max7456_init(uint8_t video_system)
max7456_screen[max_screen_size + 3] = (uint16_t)(MAX7456ADD_DMDI | (0xFF << 8));
max7456_screen[max_screen_size + 4] = (uint16_t)(MAX7456ADD_DMM | (0 << 8));
RCC_AHBPeriphClockCmd(MAX7456_DMA_PERIPH_CLOCK, ENABLE);
NVIC_InitTypeDef NVIC_InitStructure;
NVIC_InitStructure.NVIC_IRQChannel = MAX7456_DMA_IRQ_HANDLER_ID;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = NVIC_PRIORITY_BASE(NVIC_PRIO_MAX7456_DMA);
NVIC_InitStructure.NVIC_IRQChannelSubPriority = NVIC_PRIORITY_SUB(NVIC_PRIO_MAX7456_DMA);
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
dmaSetHandler(MAX7456_DMA_IRQ_HANDLER_ID, max7456_dma_irq_handler, NVIC_PRIO_MAX7456_DMA, 0);
#endif
}