I need help. I have been working on the communication program between stm8s103f3 and another chip for a long time but I still can't figure it out. I feel a little sad.

Evisi

I need help. I have been working on the communication program between stm8s103f3 and another chip for a long time but I still can't figure it out. I feel a little sad. [Copy link]

I can't see the waveform of the chip return value on the oscilloscope. Can anyone help me find the problem? Thank you very much

Evisi

This is the basic information of the communication protocol

zhaojun_xf

The timing is a headache, you should write it strictly according to the timing, especially the delay, it should not be a big problem

shower.xu

If you use the two pins of IIC, please be sure to connect external pull-ups. Many experts fail here.

ienglgge

I don't know much about this protocol. Are you using Io analog timing? First make sure the hardware is normal. Then compare the timing and protocol.

Evisi

shower.xu posted on 2015-3-25 17:06 If you use the two pins of IIC, please make sure to connect the pull-up pins externally. Many experts have failed here

This is from the first-line communication

LED-W

Evisi posted on 2015-3-25 10:41 This is the basic information of the communication protocol

This is single-line communication, right? For single-line communication, you just need to follow the sequence of timing. You just need to send it as you are told. The main thing is to use an oscilloscope or logic analyzer to measure the timing accurately, and then you can communicate. It is similar to the chip that STM8S drives TM1804.