The STM32F4 board made by myself cannot output the DAC channel. The software problem has been eliminated, and the specified DA amount can be output normally on other boards with the same program. May I ask what hardware failures will cause the microcontroller DA channel cannot be output.
Gregory postato su December 17, 2020
Isolate the output of DA from the load and measure whether the voltage is normal. If it is not normal, it means there is a problem with the DA, and then check whether the single-chip microcomputer is working normally and whether the DA pin is correct.
Amaya postato su December 17, 2020
Is the DA's IO port connected to the op amp? If it is connected, disconnect it and directly measure the IO port voltage.
Alondra postato su December 17, 2020
The hardware is okay, it is a software problem, it may not be configured properly.
