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uart_commands.c: allow for complete line removal via Ctrl-U

This commit is contained in:
Christian Kroll 2014-09-28 05:13:25 +02:00
parent 45ba07b9d7
commit 496f6a9ced
1 changed files with 9 additions and 4 deletions
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13
src/uart/uart_commands.c
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@ -44,7 +44,7 @@ extern volatile unsigned char reverseMode;
char const UART_STR_NOTIMPL[] PROGMEM = "Not implemented."CR;
#endif
char const UART_STR_CLEARLINE[] PROGMEM = "\033[1`\033[2K";
char const UART_STR_CLEARLINE[] PROGMEM = "\033[1`\033[J";
char const UART_STR_BACKSPACE[] PROGMEM = "\b \b";
char const UART_STR_PROMPT[] PROGMEM = "> ";
char const UART_STR_MODE[] PROGMEM = "%d"CR;
@ -287,15 +287,20 @@ static bool uartcmd_read_until_enter(void) {
break;
case '\f': // Form Feed (Ctrl-L), reprints the line buffer
UART_PUTS_P(UART_STR_CLEARLINE); // clear current line
UART_PUTS_P(UART_STR_PROMPT); // prompt
UART_PUTS_P(UART_STR_PROMPT); // output prompt
g_rx_buffer[g_rx_index] = 0; // terminate input buffer
UART_PUTS(g_rx_buffer); // finally reprint it
break;
case 21: // NAK (Ctrl-U), clears the line buffer
UART_PUTS_P(UART_STR_CLEARLINE); // clear current line
UART_PUTS_P(UART_STR_PROMPT); // output prompt
uartcmd_clear_buffer(); // clear buffer
break;
case 27: // ignore Esc
break;
default:
// We don't accept control chars except for \f, \b, \r and \n.
// We also limit the input to 7 bit ASCII.
// We don't accept control characters which are not handled
// above. We also limit the input to 7 bit ASCII.
if ((uart_result < 0x20) || (uart_result > 0x7f)) {
UART_PUTC('\a'); // complain via ASCII bell
} else {