CH549EVT development board test - SPI test

hujj

CH549EVT development board test - SPI test [Copy link]

Since the use of timer conflicts with serial communication, the reason should be that serial port 0 uses timer 1 as the clock. Therefore, after enabling timer 1 (timing time is 100us) according to the example, serial port 0 cannot send data normally. I switched to timer 2, which still affects serial communication and cannot be solved for a while. Finally, I had to switch to SPI to transmit data. This time it went smoothly. After adding SPI.c, SPI0 was initialized in the main function, and then the logic analyzer was used to observe the pins of SPI0. By analyzing the waveform, the output result was completely correct. The next step is to debug the wireless transmitter module.

Here are the waveforms for the relevant pins:

This content is originally created by EEWORLD forum user hujj . If you want to reprint or use it for commercial purposes, you must obtain the author's consent and indicate the source

我芯永恒

Come on, brother! We will provide prizes to excellent reviewers !