Sniff UART traffic while shell is enabled

RE: Sniff UART traffic while shell is enabled

Naeem Maroof — Wed, 07 Aug 2024 07:51:31 GMT

have you tried enabling it in the echo bot that has the callback?

do you get any issues with that?

RE: Sniff UART traffic while shell is enabled

Terence Kim — Sat, 27 Jul 2024 19:58:28 GMT

Yes, that's what I'm looking for. However, when the shell is enabled (CONFIG_SHELL=y), I'm not sure where this serial_callback is. Can someone point me in the right direction?

RE: Sniff UART traffic while shell is enabled

Naeem Maroof — Fri, 26 Jul 2024 15:35:27 GMT

In the echo bot for example, the print_uart function is kind of custom implementation you are looking for, ain't it?

In the serial callback, the received data is put in uart message queue and then processed.

RE: Sniff UART traffic while shell is enabled

Terence Kim — Wed, 24 Jul 2024 21:48:27 GMT

Thank you. Basically, I want to do something like the following:

void uart_rx(uint8_t *data, uint16_t length)
{
  // In the Shell UART example, the shell is already churning over incoming bytes
  shell_rx_processing(data, length);

  // I want my own custom protocol engine to churn over the same incoming bytes
  // in parallel to the shell's processing
  my_custom_protocol_rx_processing(data, length);
}


Could you point me to where in the code I would need to add this additional processing?

RE: Sniff UART traffic while shell is enabled

Naeem Maroof — Wed, 24 Jul 2024 10:13:38 GMT

Hi Terence,

I am not sure what you want to do and what is the use case, and also if I fully understand the requirements/needs.

Nonetheless:

UART Exercise talks about accessing the uart tx and rx buffers.

UART Echo sample demonstrates how to use the UART serial driver. It reads data from the console and echos back.

UART Passthrough sample virtually connects two UART instances. It reads data from console and transmits to the other interface.

Shell UART API might also be of interest to you

/br,

Naeem