An interrupt is a signal sent to the CPU which indicates that a system event has occurred, which needs immediate attention. In case of an interrupt got triggered, CPU stops whatever it is doing and executes a function first. This function is a small piece of code also known as ISR(Interrupt Service Routine).
There are many ways to program ADC in STM devices. We are going to cover all of them, starting with the simplest, PollForConversion method. In this method, Controller continuously poll the ADC device and when the data conversion is complete, it can be read using HAL_ADC_Getvalue() function.
ADC is used by most of the sensors for eg- temperature sensor, force sensor, IR sensor, potentiometer, and many more. All these sensors send the data to the microcontroller in analogue form, which then converts it into digital values.