Diff: web_server_demo/src/debug.c

Revision:

0:8918a71cdbe9

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/web_server_demo/src/debug.c	Sat Feb 04 18:15:49 2017 +0000
@@ -0,0 +1,134 @@
+/**
+ * @file debug.c
+ * @brief Debugging facilities
+ *
+ * @section License
+ *
+ * Copyright (C) 2010-2017 Oryx Embedded SARL. All rights reserved.
+ *
+ * This program 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 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program 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 this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *
+ * @author Oryx Embedded SARL (www.oryx-embedded.com)
+ * @version 1.7.6
+ **/
+
+//Dependencies
+#include "stm32f7xx.h"
+#include "stm32f7xx_hal.h"
+#include "debug.h"
+
+//Variable declaration
+static UART_HandleTypeDef UART_Handle;
+
+
+/**
+ * @brief Debug UART initialization
+ * @param[in] baudrate UART baudrate
+ **/
+
+void debugInit(uint32_t baudrate)
+{
+   GPIO_InitTypeDef GPIO_InitStructure;
+
+   //Enable GPIOD clock
+   __HAL_RCC_GPIOD_CLK_ENABLE();
+   //Enable USART3 clock
+   __HAL_RCC_USART3_CLK_ENABLE();
+
+   //Configure USART3_TX (PD8)
+   GPIO_InitStructure.Pin = GPIO_PIN_8;
+   GPIO_InitStructure.Mode = GPIO_MODE_AF_PP;
+   GPIO_InitStructure.Pull = GPIO_PULLUP;
+   GPIO_InitStructure.Speed = GPIO_SPEED_FAST;
+   GPIO_InitStructure.Alternate = GPIO_AF7_USART3;
+   HAL_GPIO_Init(GPIOD, &GPIO_InitStructure);
+
+   //Configure USART3_RX (PD9)
+   GPIO_InitStructure.Pin = GPIO_PIN_9;
+   GPIO_InitStructure.Mode = GPIO_MODE_AF_PP;
+   GPIO_InitStructure.Pull = GPIO_PULLUP;
+   GPIO_InitStructure.Speed = GPIO_SPEED_FAST;
+   GPIO_InitStructure.Alternate = GPIO_AF7_USART3;
+   HAL_GPIO_Init(GPIOD, &GPIO_InitStructure);
+
+   //Configure USART3
+   UART_Handle.Instance = USART3;
+   UART_Handle.Init.BaudRate = baudrate;
+   UART_Handle.Init.WordLength = UART_WORDLENGTH_8B;
+   UART_Handle.Init.StopBits = UART_STOPBITS_1;
+   UART_Handle.Init.Parity = UART_PARITY_NONE;
+   UART_Handle.Init.HwFlowCtl = UART_HWCONTROL_NONE;
+   UART_Handle.Init.Mode = UART_MODE_TX_RX;
+   HAL_UART_Init(&UART_Handle);
+}
+
+
+/**
+ * @brief Display the contents of an array
+ * @param[in] stream Pointer to a FILE object that identifies an output stream
+ * @param[in] prepend String to prepend to the left of each line
+ * @param[in] data Pointer to the data array
+ * @param[in] length Number of bytes to display
+ **/
+
+void debugDisplayArray(FILE *stream,
+   const char_t *prepend, const void *data, size_t length)
+{
+   uint_t i;
+
+   for(i = 0; i < length; i++)
+   {
+      //Beginning of a new line?
+      if((i % 16) == 0)
+         fprintf(stream, "%s", prepend);
+      //Display current data byte
+      fprintf(stream, "%02" PRIX8 " ", *((uint8_t *) data + i));
+      //End of current line?
+      if((i % 16) == 15 || i == (length - 1))
+         fprintf(stream, "\r\n");
+   }
+}
+
+
+/**
+ * @brief Write character to stream
+ * @param[in] c The character to be written
+ * @param[in] stream Pointer to a FILE object that identifies an output stream
+ * @return On success, the character written is returned. If a writing
+ *   error occurs, EOF is returned
+ **/
+
+int_t fputc(int_t c, FILE *stream)
+{
+   //Standard output or error output?
+   if(stream == stdout || stream == stderr)
+   {
+      //Character to be written
+      uint8_t ch = c;
+
+      //Transmit data
+      HAL_UART_Transmit(&UART_Handle, &ch, 1, HAL_MAX_DELAY);
+
+      //On success, the character written is returned
+      return c;
+   }
+   //Unknown output?
+   else
+   {
+      //If a writing error occurs, EOF is returned
+      return EOF;
+   }
+}
+