2020-05-12 05:54 PM
Trying to get a basic sample DAC1 with DMA, triggered by TIM2 working.
This should be trivial, works fine on SMT32F3. I'm using a Nucleo-32 SMT32G431.
Using Cube IDE. The only non IDE-generated code in main is:
/* USER CODE BEGIN 2 */
static uint16_t x[4];
x[0]= 100;
x[1]= 1000;
x[2]= 2000;
x[3]= 3000;
HAL_TIM_Base_Start_IT(&htim2);
HAL_DAC_Start_DMA(&hdac1, DAC_CHANNEL_1, (uint32_t*)x, 4, DAC_ALIGN_12B_R);
/* USER CODE END 2 */
IOC configuration:
Compared to some DAC/DMA examples - everything seems fine (and works on a Nucleo-32 SMT32F3. Please help - this is extremely frustrating and has held up a a project for 3 days.
test1.ioc and main.c files attached.
Thank you!
Paul
2023-09-12 08:13 AM - edited 2023-09-12 08:24 AM
FOR the STM32G series: I found out what this was. In the GUI you have to make the word size WORD even though its a 12 bit DAC. Strangely there is no error message if you try to use half word AND when you run the code it simply does not start. Subtle one.
2023-09-22 04:46 AM - edited 2023-09-22 04:48 AM
That worked for me i.e. changing Half Word to Word. Thanks!