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annotate libs/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/USART/MultiProcessor/main.c @ 8:58d76cf522ff

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Split out code into separate files.
author Daniel O'Connor <darius@dons.net.au>
date Sat, 04 Feb 2012 13:29:31 +1030
parents c59513fd84fb
children
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1 /**
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2 ******************************************************************************
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3 * @file USART/MultiProcessor/main.c
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4 * @author MCD Application Team
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5 * @version V3.5.0
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6 * @date 08-April-2011
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7 * @brief Main program body
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8 ******************************************************************************
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9 * @attention
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10 *
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11 * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
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12 * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
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13 * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
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14 * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
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15 * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
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16 * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
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17 *
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18 * <h2><center>&copy; COPYRIGHT 2011 STMicroelectronics</center></h2>
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19 ******************************************************************************
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20 */
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21
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22 /* Includes ------------------------------------------------------------------*/
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23 #include "stm32f10x.h"
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24 #include "platform_config.h"
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25
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26 /** @addtogroup STM32F10x_StdPeriph_Examples
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27 * @{
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28 */
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29
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30 /** @addtogroup USART_MultiProcessor
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31 * @{
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32 */
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33
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34 /* Private typedef -----------------------------------------------------------*/
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35 /* Private define ------------------------------------------------------------*/
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36 /* Private macro -------------------------------------------------------------*/
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37 /* Private variables ---------------------------------------------------------*/
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38 USART_InitTypeDef USART_InitStructure;
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39
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40 /* Private function prototypes -----------------------------------------------*/
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41 void RCC_Configuration(void);
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42 void GPIO_Configuration(void);
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43 void Delay(__IO uint32_t nCount);
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44
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45 /* Private functions ---------------------------------------------------------*/
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46 /**
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47 * @brief Main program
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48 * @param None
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49 * @retval None
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50 */
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51 int main(void)
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52 {
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53 /*!< At this stage the microcontroller clock setting is already configured,
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54 this is done through SystemInit() function which is called from startup
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55 file (startup_stm32f10x_xx.s) before to branch to application main.
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56 To reconfigure the default setting of SystemInit() function, refer to
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57 system_stm32f10x.c file
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58 */
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59
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60 /* System Clocks Configuration */
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61 RCC_Configuration();
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62
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63 /* Configure the GPIO ports */
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64 GPIO_Configuration();
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65
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66 /* Initialize Leds, Wakeup and Key Buttons mounted on STM3210X-EVAL board */
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67 STM_EVAL_LEDInit(LED1);
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68 STM_EVAL_LEDInit(LED2);
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69 STM_EVAL_LEDInit(LED3);
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70 STM_EVAL_LEDInit(LED4);
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71 STM_EVAL_PBInit(BUTTON_WAKEUP, BUTTON_MODE_EXTI);
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72 STM_EVAL_PBInit(BUTTON_KEY, BUTTON_MODE_EXTI);
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73
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74 /* USARTy and USARTz configuration -------------------------------------------*/
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75 /* USARTy and USARTz configured as follow:
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76 - BaudRate = 9600 baud
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77 - Word Length = 9 Bits
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78 - One Stop Bit
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79 - No parity
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80 - Hardware flow control disabled (RTS and CTS signals)
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81 - Receive and transmit enabled
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82 */
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83 USART_InitStructure.USART_BaudRate = 9600;
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84 USART_InitStructure.USART_WordLength = USART_WordLength_9b;
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85 USART_InitStructure.USART_StopBits = USART_StopBits_1;
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86 USART_InitStructure.USART_Parity = USART_Parity_No;
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87 USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
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88 USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
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89
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90 /* Configure USARTy */
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91 USART_Init(USARTy, &USART_InitStructure);
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92 /* Configure USARTz */
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93 USART_Init(USARTz, &USART_InitStructure);
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94
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95 /* Enable the USARTy */
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96 USART_Cmd(USARTy, ENABLE);
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97 /* Enable the USARTz */
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98 USART_Cmd(USARTz, ENABLE);
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99
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100 /* Set the USARTy Address */
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101 USART_SetAddress(USARTy, 0x1);
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102 /* Set the USARTz Address */
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103 USART_SetAddress(USARTz, 0x2);
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104
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105 /* Select the USARTz WakeUp Method */
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106 USART_WakeUpConfig(USARTz, USART_WakeUp_AddressMark);
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107
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108 while (1)
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109 {
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110 /* Send one byte from USARTy to USARTz */
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111 USART_SendData(USARTy, 0x33);
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112
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113 /* Wait while USART1 TXE = 0 */
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114 while(USART_GetFlagStatus(USARTz, USART_FLAG_TXE) == RESET)
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115 {
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116 }
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117
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118 if(USART_GetFlagStatus(USARTz, USART_FLAG_RXNE) != RESET)
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119 {
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120 if(USART_ReceiveData(USARTz) == 0x33)
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121 {
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122 STM_EVAL_LEDToggle(LED1);
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123 Delay(0x5FFFF);
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124 STM_EVAL_LEDToggle(LED2);
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125 Delay(0x5FFFF);
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126 STM_EVAL_LEDToggle(LED3);
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127 Delay(0x5FFFF);
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128 STM_EVAL_LEDToggle(LED4);
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129 Delay(0x5FFFF);
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130 }
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131 }
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132 }
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133 }
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134
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135 /**
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136 * @brief Configures the different system clocks.
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137 * @param None
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138 * @retval None
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139 */
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140 void RCC_Configuration(void)
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141 {
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142 /* Enable GPIO clock */
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143 RCC_APB2PeriphClockCmd(USARTy_GPIO_CLK | USARTz_GPIO_CLK | RCC_APB2Periph_AFIO, ENABLE);
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144
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145 #ifndef USE_STM3210C_EVAL
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146 /* Enable USARTy Clock */
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147 RCC_APB2PeriphClockCmd(USARTy_CLK, ENABLE);
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148 #else
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149 /* Enable USARTy Clock */
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150 RCC_APB1PeriphClockCmd(USARTy_CLK, ENABLE);
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151 #endif
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152 /* Enable USARTz Clock */
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153 RCC_APB1PeriphClockCmd(USARTz_CLK, ENABLE);
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154 }
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155
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156 /**
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157 * @brief Configures the different GPIO ports.
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158 * @param None
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159 * @retval None
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160 */
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161 void GPIO_Configuration(void)
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162 {
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163 GPIO_InitTypeDef GPIO_InitStructure;
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164
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165 #ifdef USE_STM3210C_EVAL
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166 /* Enable the USART3 Pins Software Remapping */
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167 GPIO_PinRemapConfig(GPIO_PartialRemap_USART3, ENABLE);
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168
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169 /* Enable the USART2 Pins Software Remapping */
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170 GPIO_PinRemapConfig(GPIO_Remap_USART2, ENABLE);
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171 #elif defined(USE_STM3210B_EVAL) || defined(USE_STM32100B_EVAL)
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172 /* Enable the USART2 Pins Software Remapping */
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173 GPIO_PinRemapConfig(GPIO_Remap_USART2, ENABLE);
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174 #endif
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175
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176 /* Configure USARTy Rx as input floating */
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177 GPIO_InitStructure.GPIO_Pin = USARTy_RxPin;
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178 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
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179 GPIO_Init(USARTy_GPIO, &GPIO_InitStructure);
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180
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181 /* Configure USARTz Rx as input floating */
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182 GPIO_InitStructure.GPIO_Pin = USARTz_RxPin;
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183 GPIO_Init(USARTz_GPIO, &GPIO_InitStructure);
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184
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185 /* Configure USARTy Tx as alternate function push-pull */
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186 GPIO_InitStructure.GPIO_Pin = USARTy_TxPin;
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187 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
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188 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
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189 GPIO_Init(USARTy_GPIO, &GPIO_InitStructure);
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190
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191 /* Configure USARTz Tx as alternate function push-pull */
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192 GPIO_InitStructure.GPIO_Pin = USARTz_TxPin;
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193 GPIO_Init(USARTz_GPIO, &GPIO_InitStructure);
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194 }
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195
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196 /**
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197 * @brief Inserts a delay time.
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198 * @param nCount: specifies the delay time length.
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199 * @retval None
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200 */
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201 void Delay(__IO uint32_t nCount)
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202 {
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203 /* Decrement nCount value */
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204 for(; nCount != 0; nCount--);
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205 }
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206
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207 #ifdef USE_FULL_ASSERT
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208
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209 /**
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210 * @brief Reports the name of the source file and the source line number
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211 * where the assert_param error has occurred.
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212 * @param file: pointer to the source file name
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213 * @param line: assert_param error line source number
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214 * @retval None
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215 */
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216 void assert_failed(uint8_t* file, uint32_t line)
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217 {
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218 /* User can add his own implementation to report the file name and line number,
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219 ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
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220
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221 /* Infinite loop */
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222 while (1)
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223 {
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224 }
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225 }
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226
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227 #endif
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228
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229 /**
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230 * @}
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231 */
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232
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233 /**
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234 * @}
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235 */
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236
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237 /******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/