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STM32F0xx Standard Peripherals Firmware Library
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STM32F0xx_StdPeriph_Examples/CAN/CAN_FIFOExtension/main.c
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00001 /** 00002 ****************************************************************************** 00003 * @file CAN/CAN_FIFOExtension/main.c 00004 * @author MCD Application Team 00005 * @version V1.4.0 00006 * @date 24-July-2014 00007 * @brief Main program body 00008 ****************************************************************************** 00009 * @attention 00010 * 00011 * <h2><center>© COPYRIGHT 2014 STMicroelectronics</center></h2> 00012 * 00013 * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License"); 00014 * You may not use this file except in compliance with the License. 00015 * You may obtain a copy of the License at: 00016 * 00017 * http://www.st.com/software_license_agreement_liberty_v2 00018 * 00019 * Unless required by applicable law or agreed to in writing, software 00020 * distributed under the License is distributed on an "AS IS" BASIS, 00021 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 00022 * See the License for the specific language governing permissions and 00023 * limitations under the License. 00024 * 00025 ****************************************************************************** 00026 */ 00027 00028 00029 /* Includes ------------------------------------------------------------------*/ 00030 #include "main.h" 00031 00032 /** @addtogroup STM32F0xx_StdPeriph_Examples 00033 * @{ 00034 */ 00035 00036 /** @addtogroup CAN_FIFOExtension 00037 * @{ 00038 */ 00039 00040 /* Private typedef -----------------------------------------------------------*/ 00041 /* Private define ------------------------------------------------------------*/ 00042 #define TAMPER_PRESSED 0x00 00043 #define TAMPER_NOT_PRESSED 0x01 00044 00045 #define MESSAGE1 " STM32072B-EVAL " 00046 #define MESSAGE2 "Press TAMP to Send message " 00047 #define MESSAGE3 " Send message to STM32 " 00048 #define MESSAGE4 "Receive message From STM32 " 00049 00050 00051 /* Private macro -------------------------------------------------------------*/ 00052 /* Private variables ---------------------------------------------------------*/ 00053 CanTxMsg TxMessage = {0}; 00054 CanRxMsg RxMessage = {0}; 00055 uint8_t KeyNumber = 0x0; 00056 extern __IO uint8_t MsgReceived; 00057 CAN_FilterInitTypeDef CAN_FilterInitStructure; 00058 /* Private function prototypes -----------------------------------------------*/ 00059 static void CAN_Config(void); 00060 static void Display_TransmittedMsg(uint8_t PushNumber); 00061 00062 void Delay(void); 00063 /* Private functions ---------------------------------------------------------*/ 00064 00065 /** 00066 * @brief Main program. 00067 * @param None 00068 * @retval None 00069 */ 00070 int main(void) 00071 { 00072 /*!< At this stage the microcontroller clock setting is already configured, 00073 this is done through SystemInit() function which is called from startup 00074 file (startup_stm32f0xx.s) before to branch to application main. 00075 To reconfigure the default setting of SystemInit() function, refer to 00076 system_stm32f0xx.c file 00077 */ 00078 00079 /* Initialize the LCD */ 00080 STM32072B_LCD_Init(); 00081 00082 /* Clear the LCD */ 00083 LCD_Clear(LCD_COLOR_WHITE); 00084 00085 /* Set the LCD Back Color */ 00086 LCD_SetBackColor(Blue); 00087 00088 /* Set the LCD Text Color */ 00089 LCD_SetTextColor(White); 00090 00091 /* Displays MESSAGE1 on line 0 */ 00092 LCD_DisplayStringLine(LINE(0), (uint8_t *)MESSAGE1); 00093 00094 LCD_SetFont(&Font12x12); 00095 00096 /* Display Messages on the the LCD */ 00097 LCD_DisplayStringLine(LINE(0x3), (uint8_t *)MESSAGE2); 00098 00099 /* Set the LCD Text size */ 00100 LCD_SetFont(&Font16x24); 00101 00102 /* Configure Push button key */ 00103 STM_EVAL_PBInit(BUTTON_TAMPER, BUTTON_MODE_GPIO); 00104 00105 /* CAN configuration */ 00106 CAN_Config(); 00107 00108 /* Infinite loop */ 00109 while(1) 00110 { 00111 while(STM_EVAL_PBGetState(BUTTON_TAMPER) == TAMPER_PRESSED) 00112 { 00113 if(KeyNumber == 41) KeyNumber = 0; 00114 00115 Display_TransmittedMsg(KeyNumber); 00116 00117 KeyNumber++; 00118 00119 Delay(); 00120 00121 while(STM_EVAL_PBGetState(BUTTON_TAMPER) != TAMPER_NOT_PRESSED) 00122 { 00123 } 00124 } 00125 if (MsgReceived != 0) 00126 { 00127 /* Display received the 6 messages on tghe LCD */ 00128 Display_ReceivedMsg(); 00129 MsgReceived = 0; 00130 00131 } 00132 } 00133 } 00134 00135 /** 00136 * @brief Configures the CAN. 00137 * @param None 00138 * @retval None 00139 */ 00140 static void CAN_Config(void) 00141 { 00142 GPIO_InitTypeDef GPIO_InitStructure; 00143 NVIC_InitTypeDef NVIC_InitStructure; 00144 CAN_InitTypeDef CAN_InitStructure; 00145 00146 /* CAN GPIOs configuration **************************************************/ 00147 00148 /* Enable GPIO clock */ 00149 RCC_AHBPeriphClockCmd(CAN_GPIO_CLK, ENABLE); 00150 00151 /* Connect CAN pins to AF7 */ 00152 GPIO_PinAFConfig(CAN_GPIO_PORT, CAN_RX_SOURCE, CAN_AF_PORT); 00153 GPIO_PinAFConfig(CAN_GPIO_PORT, CAN_TX_SOURCE, CAN_AF_PORT); 00154 00155 /* Configure CAN RX and TX pins */ 00156 GPIO_InitStructure.GPIO_Pin = CAN_RX_PIN | CAN_TX_PIN; 00157 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF; 00158 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; 00159 GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; 00160 GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP; 00161 GPIO_Init(CAN_GPIO_PORT, &GPIO_InitStructure); 00162 00163 /* CAN NVIC configuration **************************************************/ 00164 NVIC_InitStructure.NVIC_IRQChannel = CEC_CAN_IRQn; 00165 NVIC_InitStructure.NVIC_IRQChannelPriority = 0; 00166 NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; 00167 NVIC_Init(&NVIC_InitStructure); 00168 00169 /* CAN configuration ********************************************************/ 00170 /* Enable CAN clock */ 00171 RCC_APB1PeriphClockCmd(CAN_CLK, ENABLE); 00172 00173 /* CAN register init */ 00174 CAN_DeInit(CANx); 00175 CAN_StructInit(&CAN_InitStructure); 00176 00177 /* CAN cell init */ 00178 CAN_InitStructure.CAN_TTCM = DISABLE; 00179 CAN_InitStructure.CAN_ABOM = DISABLE; 00180 CAN_InitStructure.CAN_AWUM = DISABLE; 00181 CAN_InitStructure.CAN_NART = DISABLE; 00182 CAN_InitStructure.CAN_RFLM = ENABLE; 00183 CAN_InitStructure.CAN_TXFP = ENABLE; 00184 CAN_InitStructure.CAN_Mode = CAN_Mode_Normal; 00185 CAN_InitStructure.CAN_SJW = CAN_SJW_1tq; 00186 00187 /* CAN Baudrate = 1MBps (CAN clocked at 36 MHz) */ 00188 CAN_InitStructure.CAN_BS1 = CAN_BS1_9tq; 00189 CAN_InitStructure.CAN_BS2 = CAN_BS2_8tq; 00190 CAN_InitStructure.CAN_Prescaler = 2; 00191 CAN_Init(CANx, &CAN_InitStructure); 00192 00193 /* CAN filter init "FIFO0" */ 00194 CAN_FilterInitStructure.CAN_FilterNumber = 0; 00195 CAN_FilterInitStructure.CAN_FilterMode = CAN_FilterMode_IdList; 00196 CAN_FilterInitStructure.CAN_FilterScale = CAN_FilterScale_32bit; 00197 CAN_FilterInitStructure.CAN_FilterIdHigh = 0x6420; 00198 CAN_FilterInitStructure.CAN_FilterIdLow = 0x2461; 00199 CAN_FilterInitStructure.CAN_FilterMaskIdHigh = 0x0000; 00200 CAN_FilterInitStructure.CAN_FilterMaskIdLow = 0x0000; 00201 CAN_FilterInitStructure.CAN_FilterFIFOAssignment = 0; 00202 CAN_FilterInitStructure.CAN_FilterActivation = ENABLE; 00203 CAN_FilterInit(&CAN_FilterInitStructure); 00204 00205 /* Transmit Structure preparation */ 00206 TxMessage.StdId = 0x321; 00207 TxMessage.ExtId = 0x00; 00208 TxMessage.RTR = CAN_RTR_DATA; 00209 TxMessage.IDE = CAN_ID_STD; 00210 TxMessage.DLC = 1; 00211 00212 /* Enable FIFO 0 full Interrupt */ 00213 CAN_ITConfig(CANx, CAN_IT_FF0, ENABLE); 00214 00215 /* Enable FIFO 1 full Interrupt */ 00216 CAN_ITConfig(CANx, CAN_IT_FF1, ENABLE); 00217 } 00218 00219 00220 /** 00221 * @brief Display transmitted msg on the LCD 00222 * @param None. 00223 * @retval None 00224 */ 00225 static void Display_TransmittedMsg(uint8_t PushNumber) 00226 { 00227 uint8_t text[50] = {0}, dataindex =0; 00228 00229 uint8_t TxMessages[6] = { 0, 1, 2, 3, 4, 5 }; 00230 00231 /* Set the LCD Back Color and Text Color*/ 00232 LCD_SetBackColor(Blue); 00233 LCD_SetTextColor(White); 00234 00235 /* Set the LCD Text size */ 00236 LCD_SetFont(&Font12x12); 00237 00238 /* Display Messages on the the LCD */ 00239 LCD_DisplayStringLine(LINE(5), (uint8_t *)MESSAGE3); 00240 00241 00242 for(dataindex = 0 ; dataindex < 6 ;dataindex++) 00243 { 00244 00245 TxMessage.Data[0] = (uint8_t)(TxMessages[dataindex] + (6 * PushNumber)); 00246 00247 CAN_Transmit(CANx, &TxMessage); 00248 00249 sprintf((char*)text,"Send Message Num%d = %d ",dataindex+1,TxMessage.Data[0] ); 00250 00251 LCD_SetBackColor(Cyan); 00252 LCD_SetTextColor(Black); 00253 00254 LCD_DisplayStringLine(LINE(6+dataindex),text); 00255 } 00256 00257 } 00258 00259 /** 00260 * @brief Display received msg on the LCD 00261 * @param None. 00262 * @retval None 00263 */ 00264 void Display_ReceivedMsg(void) 00265 { 00266 uint8_t text[50] = {0}, dataindex =0; 00267 00268 /* Set the LCD Back Color and Text Color*/ 00269 LCD_SetBackColor(Blue); 00270 LCD_SetTextColor(White); 00271 00272 /* Set the LCD Text size */ 00273 LCD_SetFont(&Font12x12); 00274 00275 00276 /* Display Messages on the the LCD */ 00277 LCD_DisplayStringLine(LINE(13), (uint8_t *)MESSAGE4); 00278 00279 00280 for(dataindex = 0 ; dataindex < 6 ;dataindex++) 00281 { 00282 if (dataindex < 3) 00283 { 00284 /* read data from CAN1 FIFO 0 */ 00285 CAN_Receive(CANx, CAN_FIFO0, &RxMessage); 00286 } 00287 else 00288 { 00289 /* read data from CAN1 FIFO 1 */ 00290 CAN_Receive(CANx, CAN_FIFO1, &RxMessage); 00291 } 00292 00293 LCD_SetBackColor(Green); 00294 LCD_SetTextColor(Black); 00295 sprintf((char*)text,"Message received Num%d= %d ",dataindex +1,RxMessage.Data[0]); 00296 00297 /* Display message on the LCD*/ 00298 LCD_DisplayStringLine(LINE(14+dataindex),text); 00299 } 00300 } 00301 00302 /** 00303 * @brief Delay 00304 * @param None 00305 * @retval None 00306 */ 00307 void Delay(void) 00308 { 00309 uint32_t nTime = 0x0000; 00310 00311 for(nTime = 0; nTime <0xFFFFF; nTime++) 00312 { 00313 } 00314 } 00315 00316 #ifdef USE_FULL_ASSERT 00317 00318 /** 00319 * @brief Reports the name of the source file and the source line number 00320 * where the assert_param error has occurred. 00321 * @param file: pointer to the source file name 00322 * @param line: assert_param error line source number 00323 * @retval None 00324 */ 00325 void assert_failed(uint8_t* file, uint32_t line) 00326 { 00327 /* User can add his own implementation to report the file name and line number, 00328 ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */ 00329 00330 /* Infinite loop */ 00331 while (1) 00332 { 00333 } 00334 } 00335 #endif 00336 00337 /** 00338 * @} 00339 */ 00340 00341 /** 00342 * @} 00343 */ 00344 00345 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/