bool PIOS_Hsync_ISR() {
if(dev_cfg->hsync->pin.gpio->IDR & dev_cfg->hsync->pin.init.GPIO_Pin) {
//rising
if(gLineType == LINE_TYPE_GRAPHICS)
{
// Activate new line
DMA_Cmd(dev_cfg->level.dma.tx.channel, ENABLE);
DMA_Cmd(dev_cfg->mask.dma.tx.channel, ENABLE);
}
} else {
//falling
gLineType = LINE_TYPE_UNKNOWN; // Default case
gActiveLine++;
if ((gActiveLine >= GRAPHICS_LINE) && (gActiveLine < (GRAPHICS_LINE + GRAPHICS_HEIGHT))) {
gLineType = LINE_TYPE_GRAPHICS;
gActivePixmapLine = (gActiveLine - GRAPHICS_LINE);
line = gActivePixmapLine*GRAPHICS_WIDTH;
}
if(gLineType == LINE_TYPE_GRAPHICS)
{
// Load new line
DMA_Cmd(dev_cfg->mask.dma.tx.channel, DISABLE);
DMA_Cmd(dev_cfg->level.dma.tx.channel, DISABLE);
DMA_MemoryTargetConfig(dev_cfg->level.dma.tx.channel,(uint32_t)&disp_buffer_level[line],DMA_Memory_0);
DMA_MemoryTargetConfig(dev_cfg->mask.dma.tx.channel,(uint32_t)&disp_buffer_mask[line],DMA_Memory_0);
DMA_SetCurrDataCounter(dev_cfg->level.dma.tx.channel,BUFFER_LINE_LENGTH);
DMA_SetCurrDataCounter(dev_cfg->mask.dma.tx.channel,BUFFER_LINE_LENGTH);
}
}
return false;
}
/**
* Prepare the system to watch for a HSYNC pulse to trigger the pixel
* clock and clock out the next line
*/
static void prepare_line(uint32_t line_num)
{
if (line_num < GRAPHICS_HEIGHT) {
uint32_t buf_offset = line_num * GRAPHICS_WIDTH;
dev_cfg->pixel_timer.timer->CNT = dc;
DMA_ClearFlag(dev_cfg->mask.dma.tx.channel, DMA_FLAG_TCIF7 | DMA_FLAG_HTIF7 | DMA_FLAG_FEIF7 | DMA_FLAG_TEIF7);
DMA_ClearFlag(dev_cfg->level.dma.tx.channel, DMA_FLAG_FEIF5 | DMA_FLAG_TEIF5);
// Load new line
DMA_MemoryTargetConfig(dev_cfg->level.dma.tx.channel, (uint32_t)&disp_buffer_level[buf_offset], DMA_Memory_0);
DMA_MemoryTargetConfig(dev_cfg->mask.dma.tx.channel, (uint32_t)&disp_buffer_mask[buf_offset], DMA_Memory_0);
// Enable DMA, Slave first
DMA_SetCurrDataCounter(dev_cfg->level.dma.tx.channel, BUFFER_LINE_LENGTH);
DMA_SetCurrDataCounter(dev_cfg->mask.dma.tx.channel, BUFFER_LINE_LENGTH);
SPI_Cmd(dev_cfg->level.regs, ENABLE);
SPI_Cmd(dev_cfg->mask.regs, ENABLE);
/* Enable SPI interrupts to DMA */
SPI_I2S_DMACmd(dev_cfg->mask.regs, SPI_I2S_DMAReq_Tx, ENABLE);
SPI_I2S_DMACmd(dev_cfg->level.regs, SPI_I2S_DMAReq_Tx, ENABLE);
DMA_Cmd(dev_cfg->level.dma.tx.channel, ENABLE);
DMA_Cmd(dev_cfg->mask.dma.tx.channel, ENABLE);
}
reset_hsync_timers();
}
//эта функция читает из фрам через SPI в буфер flashBuffIn не более SIZE_BUF_FLASH байт
//после чтения из буфера flashBuffIn копируется в destination
void flashMx25Read(void *destination, uint32_t adrSource, uint16_t size)
{
xSemaphoreTake(mutexFlash, portMAX_DELAY);
if( !isInitial )
initSpi2();
uint16_t status;
do
{
status = spiRDSR();
} while(status & 1);
if( size > SIZE_BUF_FLASH )
{
xSemaphoreGive(mutexFlash);
return;
}
DMA_MemoryTargetConfig(DMA1_Stream3, (uint32_t)flashBuffIn, 0);
flashBuffOut[0] = 3; //Command Read
flashBuffOut[1] = adrSource >> 16;
flashBuffOut[2] = adrSource >> 8;
flashBuffOut[3] = adrSource;
startSpi(size + 4);
spiWait();
memcpy(destination, (void*)(flashBuffIn + 4), size);
xSemaphoreGive(mutexFlash);
}
void uartStartTxDMA(uartPort_t *s)
{
#ifdef STM32F40_41xxx
DMA_Cmd(s->txDMAStream, DISABLE);
DMA_MemoryTargetConfig(s->txDMAStream,(uint32_t)&s->port.txBuffer[s->port.txBufferTail],DMA_Memory_0);
//s->txDMAStream->M0AR = (uint32_t)&s->port.txBuffer[s->port.txBufferTail];
if (s->port.txBufferHead > s->port.txBufferTail) {
s->txDMAStream->NDTR = s->port.txBufferHead - s->port.txBufferTail;
s->port.txBufferTail = s->port.txBufferHead;
} else {
s->txDMAStream->NDTR = s->port.txBufferSize - s->port.txBufferTail;
s->port.txBufferTail = 0;
}
s->txDMAEmpty = false;
DMA_Cmd(s->txDMAStream, ENABLE);
#else
s->txDMAChannel->CMAR = (uint32_t)&s->port.txBuffer[s->port.txBufferTail];
if (s->port.txBufferHead > s->port.txBufferTail) {
s->txDMAChannel->CNDTR = s->port.txBufferHead - s->port.txBufferTail;
s->port.txBufferTail = s->port.txBufferHead;
} else {
s->txDMAChannel->CNDTR = s->port.txBufferSize - s->port.txBufferTail;
s->port.txBufferTail = 0;
}
s->txDMAEmpty = false;
DMA_Cmd(s->txDMAChannel, ENABLE);
#endif
}
void spi_write(uint8_t* pBuffer, unsigned int size) {
if (size > SIZE_BIG_BUFFER)
return;
pb_spi = alloc_buf(SIZE_BIG_BUFFER);
memcpy(pb_spi->pbuf, pBuffer, size);
DMA_MemoryTargetConfig(DMA1_Stream5, (uint32_t)pb_spi->pbuf, 0);
DMA_Cmd(DMA1_Stream5, ENABLE);
}
//эта функция читает сразу из фрамки по SPI через DMA в destination
void flashMx25ReadData(uint8_t *destination, uint32_t adrSource, uint16_t size,
bool fromISR)
{
xSemaphoreTake(mutexFlash, portMAX_DELAY);
uint16_t status;
do
{
status = spiRDSR();
} while(status & 1);
if( size > 4096 )
{
xSemaphoreGive(mutexFlash);
return;
}
DMA_MemoryTargetConfig(DMA1_Stream3, (uint32_t)destination, 0);
flashBuffOut[0] = 3; //Command Read
flashBuffOut[1] = adrSource >> 16;
flashBuffOut[2] = adrSource >> 8;
flashBuffOut[3] = adrSource;
startSpi(size + 4);
spiWait();
DMA_MemoryTargetConfig(DMA1_Stream3, (uint32_t)flashBuffIn, 0);
xSemaphoreGive(mutexFlash);
}
/**
* @brief Swap DMA image buffer addresses
*/
void dma_swap_buffers(void)
{
/* check which buffer is in use */
if (DMA_GetCurrentMemoryTarget(DMA2_Stream1))
{
/* swap dcmi image buffer */
if (dcmi_image_buffer_unused == 1)
DMA_MemoryTargetConfig(DMA2_Stream1, (uint32_t) dcmi_image_buffer_8bit_1, DMA_Memory_0);
else if (dcmi_image_buffer_unused == 2)
DMA_MemoryTargetConfig(DMA2_Stream1, (uint32_t) dcmi_image_buffer_8bit_2, DMA_Memory_0);
else
DMA_MemoryTargetConfig(DMA2_Stream1, (uint32_t) dcmi_image_buffer_8bit_3, DMA_Memory_0);
int tmp_buffer = dcmi_image_buffer_memory0;
dcmi_image_buffer_memory0 = dcmi_image_buffer_unused;
dcmi_image_buffer_unused = tmp_buffer;
}
else
{
/* swap dcmi image buffer */
if (dcmi_image_buffer_unused == 1)
DMA_MemoryTargetConfig(DMA2_Stream1, (uint32_t) dcmi_image_buffer_8bit_1, DMA_Memory_1);
else if (dcmi_image_buffer_unused == 2)
DMA_MemoryTargetConfig(DMA2_Stream1, (uint32_t) dcmi_image_buffer_8bit_2, DMA_Memory_1);
else
DMA_MemoryTargetConfig(DMA2_Stream1, (uint32_t) dcmi_image_buffer_8bit_3, DMA_Memory_1);
int tmp_buffer = dcmi_image_buffer_memory1;
dcmi_image_buffer_memory1 = dcmi_image_buffer_unused;
dcmi_image_buffer_unused = tmp_buffer;
}
/* set next time_between_images */
cycle_time = get_boot_time_us() - time_last_frame;
time_last_frame = get_boot_time_us();
if(image_counter) // image was not fetched jet
{
time_between_next_images = time_between_next_images + cycle_time;
}
else
{
time_between_next_images = cycle_time;
}
/* set new image true and increment frame counter*/
image_counter += 1;
return;
}