MCU serial communication

赵薇0317

The single-chip microcomputer communication receives characters sent by the computer, changes lowercase letters to uppercase letters, and keeps the rest unchanged, and then sends them to the computer, and displays the characters on the LCD1602 liquid crystal display. Why can't a single character be sent in the end, and strange Chinese characters are displayed?

huo_hu

There is something wrong with your screenshot. It is incomplete.

赵薇0317

huo_hu posted on 2018-5-1 09:13 There is something wrong with your screenshot, it is incomplete

I changed it a little bit, now it is complete, what is wrong?

lcofjp

Maybe your baud rate is not configured correctly.

huo_hu

The garbled code is mostly caused by the baud rate setting problem. Check it yourself when sending and receiving.

赵薇0317

I also get garbled code when I send it spontaneously. The baud rate is 2400, not doubled. The serial port debugging group hand is also 2400. The crystal oscillator is 11.0592. What's wrong?

huo_hu

There should be no garbled characters when sending and receiving, because the sending and receiving are the same.

huaiqiao

I remember that for 51, the calculation of baud rate is different if the crystal is 11.0592M and the crystal is 12M. You can search for some information on the Internet.

ienglgge

The MCU sends and connects to its own receiver. It should not be garbled. If it displays garbled characters, you should check whether there is a problem with the display function.