mirror of https://github.com/wolfSSL/wolfBoot.git
57 lines
1.7 KiB
C
57 lines
1.7 KiB
C
/* nrf5340_uart.c
|
|
*
|
|
* CRLF line conversion for the nRF5340 debug UART, split out of
|
|
* hal/nrf5340.c so the newline handling can be unit-tested on the host
|
|
* without the nrfx register access the rest of that HAL needs.
|
|
*
|
|
* Copyright (C) 2026 wolfSSL Inc.
|
|
*
|
|
* This file is part of wolfBoot.
|
|
*
|
|
* wolfBoot is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* wolfBoot is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with wolfBoot; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
|
|
* 02110-1335, USA
|
|
*/
|
|
|
|
#ifdef DEBUG_UART
|
|
|
|
#include <string.h>
|
|
|
|
/* Emit buf[0..sz) via "sink" with every '\n' rendered as CRLF. */
|
|
void nrf5340_uart_crlf(const char* buf, unsigned int sz,
|
|
void (*sink)(const char*, unsigned int))
|
|
{
|
|
const char* line;
|
|
unsigned int lineSz;
|
|
do {
|
|
/* find '\n' */
|
|
line = memchr(buf, '\n', sz);
|
|
if (line == NULL) {
|
|
sink(buf, sz);
|
|
break;
|
|
}
|
|
lineSz = (unsigned int)(line - buf);
|
|
if (lineSz > sz - 1)
|
|
lineSz = sz - 1;
|
|
|
|
sink(buf, lineSz);
|
|
sink("\r\n", 2); /* handle CRLF */
|
|
|
|
buf = line + 1; /* advance past the emitted newline */
|
|
sz -= lineSz + 1;
|
|
} while ((int)sz > 0);
|
|
}
|
|
|
|
#endif /* DEBUG_UART */
|