How to implement Ctrl-C for HID keyboard

[sharkconi]

Hi Guys, I try to implements the ctrl-C/V for bluetooth HID keyboard. But from SDK, I can't figure out how to send two keys. Even I do not use buffer_enqueue/dequeue in order to keep 'Ctrl' pressed, not released, still can't work. Does anyone figure out how to work on it?

[Jakub Rzeszutko]

Hi,

I just checked what are escape codes for "ctr+c" and "ctr+v". I did it by debugging function: cli_state_collect in nrf_cli module.

Here are escape codes:

• ctr+c = 0x03
• ctr+v = 0x16

To handle it I would need to update cli_state_collect function with two extra cases in below switch statement:

switch (data)
{
    case NRF_CLI_VT100_ASCII_ESC:       /* ESCAPE */
        NRF_CLI_RECIEVE_STATE_NEXT(p_cli, NRF_CLI_RECEIVE_ESC);
        break;
    case '\0':
        break;
    case '\t':                          /* TAB */
        cli_tab_handle(p_cli);
        break;
    case NRF_CLI_VT100_ASCII_BSPACE:    /* BACKSPACE */
        char_backspace(p_cli);
        break;
    case NRF_CLI_VT100_ASCII_DEL:       /* DELETE */
        char_delete(p_cli);
        break;

    case 0x03   // ctr+c
        break;
    case 0x16:  // ctr+v
        break;

    default:
        if (isprint((int)data))
        {
            char_insert(p_cli, data);
        }
        break;
}