How to receive 0x00 in serial communication

zhang520

How to receive 0x00 in serial communication [Copy link]

As shown in the figure, 0x00 was not received, how to solve it

annysky2012

Did you send the hexadecimal format? What is the forwarding device in the middle?

chunyang

If one is missing, it means there is a problem with the program.

zhang520

annysky2012 posted on 2021-10-27 18:16 Did you send the hexadecimal? What is the forwarding device in the middle?

It is hexadecimal. UART is used between stm8 and pc to receive and send: res=UART2_ReceiveData8(); //
//UART_data(res);

wangerxian

Can the microcontroller receive 0x00?

baopodao

Is it a setting problem, is it a byte or a string? 00 is the string terminator and is not sent.

zhang520

The transmission is sent in hexadecimal format

zhang520

00 cannot be received

annysky2012

The transmission is in hexadecimal format

That doesn't make sense, hexadecimal 0x00 can be sent. First check if there is a problem with the serial port settings, and then use the official routines to test.

zhang520

annysky2012 posted on 2021-10-28 09:24 That doesn't make sense. Hexadecimal 0x00 can be sent. First check if there is a problem with the serial port settings, and then use the official routine to...

Solved, /GPIO_Init(GPIOD, GPIO_PIN_5, GPIO_MODE_OUT_PP_HIGH_FAST);
//GPIO_Init(GPIOD, GPIO_PIN_6, GPIO_MODE_IN_FL_IT); Just shield these two sentences, it seems that there is no need to initialize stm8s and uart2, just set the serial port directly

annysky2012

zhang520 published on 2021-10-28 10:25 Solved, /GPIO_Init(GPIOD, GPIO_PIN_5, GPIO_MODE_OUT_PP_HIGH_FAST); //GPIO_Init(GPIOD, GPIO...

Solved! It means it is still a configuration problem.