mbed_board.c

00001 /* mbed Microcontroller Library
00002  * Copyright (c) 2006-2013 ARM Limited
00003  *
00004  * Licensed under the Apache License, Version 2.0 (the "License");
00005  * you may not use this file except in compliance with the License.
00006  * You may obtain a copy of the License at
00007  *
00008  *     http://www.apache.org/licenses/LICENSE-2.0
00009  *
00010  * Unless required by applicable law or agreed to in writing, software
00011  * distributed under the License is distributed on an "AS IS" BASIS,
00012  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00013  * See the License for the specific language governing permissions and
00014  * limitations under the License.
00015  */
00016 #include <stdio.h>
00017 #include "hal/gpio_api.h"
00018 #include "platform/mbed_wait_api.h"
00019 #include "platform/mbed_toolchain.h"
00020 #include "platform/mbed_interface.h"
00021 #include "platform/mbed_critical.h"
00022 #include "hal/serial_api.h"
00023 
00024 #if DEVICE_SERIAL
00025 extern int stdio_uart_inited;
00026 extern serial_t stdio_uart;
00027 #endif
00028 
00029 WEAK void mbed_die(void)
00030 {
00031 #if !defined (NRF51_H) && !defined(TARGET_EFM32)
00032     core_util_critical_section_enter();
00033 #endif
00034     gpio_t led_err;
00035     gpio_init_out(&led_err, LED1);
00036 
00037     while (1) {
00038         for (int i = 0; i < 4; ++i) {
00039             gpio_write(&led_err, 1);
00040             wait_ms(150);
00041             gpio_write(&led_err, 0);
00042             wait_ms(150);
00043         }
00044 
00045         for (int i = 0; i < 4; ++i) {
00046             gpio_write(&led_err, 1);
00047             wait_ms(400);
00048             gpio_write(&led_err, 0);
00049             wait_ms(400);
00050         }
00051     }
00052 }
00053 
00054 void mbed_error_printf(const char *format, ...)
00055 {
00056     va_list arg;
00057     va_start(arg, format);
00058     mbed_error_vfprintf(format, arg);
00059     va_end(arg);
00060 }
00061 
00062 void mbed_error_vfprintf(const char *format, va_list arg)
00063 {
00064 #if DEVICE_SERIAL
00065 #define ERROR_BUF_SIZE      (128)
00066     core_util_critical_section_enter();
00067     char buffer[ERROR_BUF_SIZE];
00068     int size = vsnprintf(buffer, ERROR_BUF_SIZE, format, arg);
00069     if (size > 0) {
00070         if (!stdio_uart_inited) {
00071             serial_init(&stdio_uart, STDIO_UART_TX, STDIO_UART_RX);
00072         }
00073 #if MBED_CONF_PLATFORM_STDIO_CONVERT_NEWLINES
00074         char stdio_out_prev = '\0';
00075         for (int i = 0; i < size; i++) {
00076             if (buffer[i] == '\n' && stdio_out_prev != '\r') {
00077                 serial_putc(&stdio_uart, '\r');
00078             }
00079             serial_putc(&stdio_uart, buffer[i]);
00080             stdio_out_prev = buffer[i];
00081         }
00082 #else
00083         for (int i = 0; i < size; i++) {
00084             serial_putc(&stdio_uart, buffer[i]);
00085         }
00086 #endif
00087     }
00088     core_util_critical_section_exit();
00089 #endif
00090 }