Hello,
I try a exable from ST documentation but the trasfer never happens.
##################### Init and Start DAC and DMA #########################
LL_DAC_EnableDMAReq(DAC1, LL_DAC_CHANNEL_1); // enable DMA for Channel1
LL_DAC_Enable(DAC1, LL_DAC_CHANNEL_1); //enable Channel on DAC
LL_DMA_ConfigAddresses(DMA1, LL_DMA_STREAM_5 , (uint32_t)&DAC_Buff, LL_DAC_DMA_GetRegAddr(DAC1, LL_DAC_CHANNEL_1, LL_DAC_DMA_REG_DATA_12BITS_RIGHT_ALIGNED ), LL_DMA_DIRECTION_MEMORY_TO_PERIPH );
LL_DMA_SetDataLength(DMA1, LL_DMA_STREAM_5, DACBUFSIZE );
LL_DMA_EnableStream(DMA1, LL_DMA_STREAM_5);
LL_DMA_EnableIT_HT(DMA1, LL_DMA_STREAM_5);
LL_DMA_EnableIT_TC(DMA1, LL_DMA_STREAM_5 );
###################################################################
In a function I start the timer6, config as trigger for DMA
......
TIM6->CR1 |= TIM_CR1_CEN; // start timer to trigger DMA transfer
while(1)
{
volatile ITStatus it_st;
it_st = RESET;
// wait for the half trasfer flag -> NEVER happens :(
while(it_st == RESET) {
it_st = LL_DMA_IsActiveFlag_HT5(DMA1);
}
.....
Does anybody knows whats I forget ?
