dbg-arch.c

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/*
 * Copyright (C) 2020 Yago Fontoura do Rosario <yago.rosario@hotmail.com.br>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the copyright holder nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
 * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
/**
 * \addtogroup nrf
 * @{
 *
 * \addtogroup nrf-os OS drivers
 * @{
 *
 * \addtogroup nrf-dbg Debug driver
 * @{
 *
 * \file
 *         Debug driver for the nRF.
 * \author
 *         Yago Fontoura do Rosario <yago.rosario@hotmail.com.br>
 *
 */
/*---------------------------------------------------------------------------*/
#include "contiki.h"
 
#include "uarte-arch.h"
#include "usb.h"
/*---------------------------------------------------------------------------*/
#if PLATFORM_DBG_CONF_USB
#define write_byte(b) usb_write((uint8_t *)&b, sizeof(uint8_t))
#define flush()       usb_flush()
#else /* PLATFORM_DBG_CONF_USB */
#define write_byte(b) uarte_write(b)
#define flush()
#endif /* PLATFORM_DBG_CONF_USB */
/*---------------------------------------------------------------------------*/
#if TRUSTZONE_NONSECURE
#include "trustzone/tz-api.h"
 
#define DBG_BUF_SIZE 256
static char dbg_buf[DBG_BUF_SIZE];
static uint16_t dbg_pos;
/*---------------------------------------------------------------------------*/
int
dbg_putchar(int c)
{
  if(dbg_pos < DBG_BUF_SIZE) {
    dbg_buf[dbg_pos++] = c;
  }
 
  if(c == '\n' || dbg_pos >= DBG_BUF_SIZE - 1) {
    dbg_buf[MIN(dbg_pos - 1, DBG_BUF_SIZE - 1)] = '\0';
    tz_api_println(dbg_buf);
    dbg_pos = 0;
  }
 
  return c;
}
#else
int
dbg_putchar(int c)
{
  write_byte(c);
 
  if(c == '\n') {
    flush();
  }
 
  return c;
}
#endif /* TRUSTZONE_NONSECURE */
/*---------------------------------------------------------------------------*/
unsigned int
dbg_send_bytes(const unsigned char *s, unsigned int len)
{
  unsigned int i = 0;
 
  while(s && *s != 0) {
    if(i >= len) {
      break;
    }
    dbg_putchar(*s++);
    i++;
  }
 
  flush();
 
  return i;
}
/*---------------------------------------------------------------------------*/
/**
 * @}
 * @}
 * @}
 */