I downloaded the compiled program to the development board. The program controls the motor through the H bridge, but there are some problems
1. Even if the development board is connected to the computer via USB, the motor will rotate even if the power button is not pressed
2. I set the ena enable pin of the H bridge to PB2 and the PWM output to set PB0, but I found that no matter which pin is connected, such as PAx, the motor will turn, as if it was short-circuited.
3. And the operation is not according to my program at all, the duty cycle is adjusted, and the speed does not change.
Anna 发表于 October 22, 2020
I even believe that there is a problem with the program. Check it out! ! !
Sebastian 发表于 October 22, 2020
Which pins are initialized? Pull up all unused pins for input. Only the enable pin is left.
George 发表于 October 22, 2020
Check the H bridge, and the parameters, it will cause uncontrolled.
