Using ADC on STM32

Using Analog to Digital Converter on STM32

Software Trigger Polling Mode

Set External Trigger Conversion Source to be "Regular Conversion launched by software"

HAL_ADC_Start(&hadc1);
HAL_StatusTypeDef status = HAL_ADC_PollForConversion(&hadc1, 100);
uint32_t value = (int32_t)HAL_ADC_GetValue(&hadc1);

Timer Triggered Mode

It is more convenient to use injected channel.

Configure Timer 2 to generate reset event on TRGO at 1 kHz.

The 1 kHz is calculated from APB1_TIMER_CLOCKS / (PSC + 1) / (ARR + 1):

$$\frac{80 MHz}{(79 + 1) \times (999 + 1)} = 1 kHz$$