static void DAC_Ch1_EscalatorConfig(void)
{
/*##-1- Initialize the DAC peripheral ######################################*/
if(HAL_DAC_Init(&DacHandle) != HAL_OK)
{
/* Initialization Error */
Error_Handler();
}
/*##-1- DAC channel1 Configuration #########################################*/
sConfig.DAC_Trigger = DAC_TRIGGER_T6_TRGO;
sConfig.DAC_OutputBuffer = DAC_OUTPUTBUFFER_ENABLE;
if(HAL_DAC_ConfigChannel(&DacHandle, &sConfig, DACx_CHANNEL1) != HAL_OK)
{
/* Channel configuration Error */
Error_Handler();
}
/*##-2- Enable DAC Channel1 and associated DMA #############################*/
if(HAL_DAC_Start_DMA(&DacHandle, DACx_CHANNEL1, (uint32_t*)aEscalator8bit, 6, DAC_ALIGN_8B_R) != HAL_OK)
{
/* Start DMA Error */
Error_Handler();
}
}
/**
* @brief DAC Channel 1 configuration
* @param None
* @retval None
*/
static void DAC_Ch1_Config(void)
{
static DAC_ChannelConfTypeDef sConfig;
/*##-1- Initialize the DAC peripheral ######################################*/
if(HAL_DAC_Init(&DacHandle) != HAL_OK)
{
/* Error */
ErrorHandler();
}
/*##-1- DAC channel1 Configuration #########################################*/
sConfig.DAC_Trigger = DAC_TRIGGER_T6_TRGO;
sConfig.DAC_OutputBuffer = DAC_OUTPUTBUFFER_DISABLE;
if(HAL_DAC_ConfigChannel(&DacHandle, &sConfig, DACx_CHANNEL1) != HAL_OK)
{
/* Channel configuration Error */
ErrorHandler();
}
/*##-2- Enable DAC Channel1 and associeted DMA #############################*/
if(HAL_DAC_Start_DMA(&DacHandle, DACx_CHANNEL1, (uint32_t*)aSine12bit_Buffer, BUFFER_SIZE, DAC_ALIGN_12B_R) != HAL_OK)
{
/* Start DMA Error */
ErrorHandler();
}
}
static void acquisition_start(void)
{
HAL_DAC_Start_DMA(&hdac, DAC_CHANNEL_1, (uint32_t*)&wave_buff, WAVE_BUFF_LEN, DAC_ALIGN_12B_R);
HAL_ADC_Start_IT(&hadc2);
HAL_ADC_Start_DMA(&hadc1, (uint32_t*)&mic_buff, WAVE_BUFF_LEN);
HAL_TIM_Base_Start(&htim2);
HAL_TIM_Base_Start_IT(&htim3);
}
mp_obj_t pyb_dac_write_timed(mp_uint_t n_args, const mp_obj_t *args, mp_map_t *kw_args) {
pyb_dac_obj_t *self = args[0];
// parse args
mp_arg_val_t vals[PYB_DAC_WRITE_TIMED_NUM_ARGS];
mp_arg_parse_all(n_args - 1, args + 1, kw_args, PYB_DAC_WRITE_TIMED_NUM_ARGS, pyb_dac_write_timed_args, vals);
// get the data to write
mp_buffer_info_t bufinfo;
mp_get_buffer_raise(vals[0].u_obj, &bufinfo, MP_BUFFER_READ);
// set TIM6 to trigger the DAC at the given frequency
TIM6_Config(vals[1].u_int);
__DMA1_CLK_ENABLE();
/*
DMA_Cmd(self->dma_stream, DISABLE);
while (DMA_GetCmdStatus(self->dma_stream) != DISABLE) {
}
DAC_Cmd(self->dac_channel, DISABLE);
*/
/*
// DAC channel configuration
DAC_InitTypeDef DAC_InitStructure;
DAC_InitStructure.DAC_Trigger = DAC_Trigger_T7_TRGO;
DAC_InitStructure.DAC_WaveGeneration = DAC_WaveGeneration_None;
DAC_InitStructure.DAC_LFSRUnmask_TriangleAmplitude = DAC_TriangleAmplitude_1; // unused, but need to set it to a valid value
DAC_InitStructure.DAC_OutputBuffer = DAC_OutputBuffer_Enable;
DAC_Init(self->dac_channel, &DAC_InitStructure);
*/
// DMA1_Stream[67] channel7 configuration
DMA_HandleTypeDef DMA_Handle;
DMA_Handle.Instance = self->dma_stream;
// Need to deinit DMA first
DMA_Handle.State = HAL_DMA_STATE_READY;
HAL_DMA_DeInit(&DMA_Handle);
DMA_Handle.Init.Channel = DMA_CHANNEL_7;
DMA_Handle.Init.Direction = DMA_MEMORY_TO_PERIPH;
DMA_Handle.Init.PeriphInc = DMA_PINC_DISABLE;
DMA_Handle.Init.MemInc = DMA_MINC_ENABLE;
DMA_Handle.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;
DMA_Handle.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE;
DMA_Handle.Init.Mode = vals[2].u_int;
DMA_Handle.Init.Priority = DMA_PRIORITY_HIGH;
DMA_Handle.Init.FIFOMode = DMA_FIFOMODE_DISABLE;
DMA_Handle.Init.FIFOThreshold = DMA_FIFO_THRESHOLD_HALFFULL;
DMA_Handle.Init.MemBurst = DMA_MBURST_SINGLE;
DMA_Handle.Init.PeriphBurst = DMA_PBURST_SINGLE;
HAL_DMA_Init(&DMA_Handle);
if (self->dac_channel == DAC_CHANNEL_1) {
__HAL_LINKDMA(&DAC_Handle, DMA_Handle1, DMA_Handle);
} else {
__HAL_LINKDMA(&DAC_Handle, DMA_Handle2, DMA_Handle);
}
DAC_Handle.Instance = DAC;
DAC_Handle.State = HAL_DAC_STATE_RESET;
HAL_DAC_Init(&DAC_Handle);
if (self->state != 3) {
DAC_ChannelConfTypeDef config;
config.DAC_Trigger = DAC_TRIGGER_T6_TRGO;
config.DAC_OutputBuffer = DAC_OUTPUTBUFFER_ENABLE;
HAL_DAC_ConfigChannel(&DAC_Handle, &config, self->dac_channel);
self->state = 3;
}
HAL_DAC_Start_DMA(&DAC_Handle, self->dac_channel, (uint32_t*)bufinfo.buf, bufinfo.len, DAC_ALIGN_8B_R);
/*
// enable DMA stream
DMA_Cmd(self->dma_stream, ENABLE);
while (DMA_GetCmdStatus(self->dma_stream) == DISABLE) {
}
// enable DAC channel
DAC_Cmd(self->dac_channel, ENABLE);
// enable DMA for DAC channel
DAC_DMACmd(self->dac_channel, ENABLE);
*/
//printf("DMA: %p %lu\n", bufinfo.buf, bufinfo.len);
return mp_const_none;
}
