NRF CLI cannot handle long arguments

[abhipray]

I am trying to pass a base64 encoded string as an argument to a CLI command over UART. It seems like the longest length command I can send is 258 bytes long. How can I pass in longer strings (1024 bytes long)? I set the UART RX buffer size to 2048. I am using SDK 14.0

[Jakub Rzeszutko]

Hi,

By default command accepted by CLI can have 128 characters. You can change this in sdk config: NRF_CLI_CMD_BUFF_SIZE. This is size of static buffer so it will impact your RAM usage especially that this buffer is doubled.

In addition by default CLI assumes that command will not take more than 12 arguments. CLI will treat argument 12 and all following as one. You can change it as well in sdk config: NRF_CLI_ARGC_MAX.

[abhipray]

I have verified that my NRF_CLI_CMD_BUFF_SIZE is set to 1024 characters. I checked via gdb that cmd_buff is of length 1024 but only gets filled up to 258 characters-- the proceeding values are nulls and the remainder of the argument is treated as a second command

[jakub]

are you using a python sricpt you or you are wring a long command "by hand" ?

[abhipray]

I am using pyserial to build and send the command. I also see the issue when I type a long command via terminal.

[jakub]

When you use macro:

NRF_CLI_UART_DEF(m_cli_uart_transport, 0, 64, 16);

What size do you set for the last parameter? It is Rx buffer size. I have also encountered some problems when it was too small. It shall be power of 2 or multiple of 8... I don't remember now. Just increase it like:

NRF_CLI_UART_DEF(m_cli_uart_transport, 0, 64, 1024);

[abhipray]

It is set to 2048.