we are using stm32h745xg and I initialize DAC with timer 6 ,we enable DMA also.
we are using following code
static TIM_HandleTypeDef htim;
TIM_MasterConfigTypeDef sMasterConfig;
/*##-1- Configure the TIM peripheral #######################################*/
/* Time base configuration */
htim.Instance = TIM6;
htim.Init.Period = 0x3FF;
htim.Init.Prescaler = 0;
htim.Init.ClockDivision = 0;
htim.Init.CounterMode = TIM_COUNTERMODE_UP;
htim.Init.RepetitionCounter = 0;
HAL_TIM_Base_Init(&htim);
/* TIM6 TRGO selection */
sMasterConfig.MasterOutputTrigger = TIM_TRGO_UPDATE;
sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
HAL_TIMEx_MasterConfigSynchronization(&htim, &sMasterConfig);
/*##-2- Enable TIM peripheral counter ######################################*/
HAL_TIM_Base_Start(&htim);
HAL_DAC_DeInit(&hdac1);
if (HAL_DAC_Init(&hdac1) != 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(&hdac1, &sConfig, DAC_CHANNEL_1) != HAL_OK)
{
/* Channel configuration Error */
Error_Handler();
}
/*##-2- Enable DAC selected channel and associated DMA #############################*/
if (HAL_DAC_Start_DMA(&hdac1, DAC_CHANNEL_1, (uint32_t *)sine_wave_array, 6, DAC_ALIGN_8B_R) != HAL_OK)
{
/* Start DMA Error */
Error_Handler();
}
but we are unable to get sinewave at output .
