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STM32F0xx Standard Peripherals Firmware Library
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STM32F0xx_StdPeriph_Examples/CAN/CAN_DualFIFO/main.c
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00001 /** 00002 ****************************************************************************** 00003 * @file CAN/CAN_DualFIFO/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_DualFIFO 00037 * @{ 00038 */ 00039 00040 /* Private typedef -----------------------------------------------------------*/ 00041 /* Private define ------------------------------------------------------------*/ 00042 #define MESSAGE1 " STM32072B-EVAL " 00043 #define MESSAGE2 "TAMPER:Send Frame to FIFO 0" 00044 #define MESSAGE3 "SEL: Send Frame to FIFO 1" 00045 00046 /* Private macro -------------------------------------------------------------*/ 00047 /* Private variables ---------------------------------------------------------*/ 00048 CanTxMsg TxMessage = {0}, TxMessage1 = {0}; 00049 uint8_t KeyNumber = 0x0; 00050 00051 /* Private function prototypes -----------------------------------------------*/ 00052 static void CAN_Config(void); 00053 00054 /* Private functions ---------------------------------------------------------*/ 00055 00056 /** 00057 * @brief Main program. 00058 * @param None 00059 * @retval None 00060 */ 00061 int main(void) 00062 { 00063 /*!< At this stage the microcontroller clock setting is already configured, 00064 this is done through SystemInit() function which is called from startup 00065 file (startup_stm32f0xx.s) before to branch to application main. 00066 To reconfigure the default setting of SystemInit() function, refer to 00067 system_stm32f0xx.c file 00068 */ 00069 00070 /* Initialize the LCD */ 00071 STM32072B_LCD_Init(); 00072 00073 /* Clear the LCD */ 00074 LCD_Clear(LCD_COLOR_WHITE); 00075 00076 /* Set the LCD Back Color */ 00077 LCD_SetBackColor(Blue); 00078 00079 /* Set the LCD Text Color */ 00080 LCD_SetTextColor(White); 00081 00082 /* Displays MESSAGE1 on line 0 */ 00083 LCD_DisplayStringLine(LINE(0), (uint8_t *)MESSAGE1); 00084 00085 /* Set the LCD Text size */ 00086 LCD_SetFont(&Font8x12); 00087 00088 /* Display */ 00089 LCD_DisplayStringLine(LINE(0x13), "CAN CAN_DualFIFO using FIFO 0 and FIFO 1 "); 00090 00091 /* Set the LCD Back Color */ 00092 LCD_SetBackColor(White); 00093 /* Set the LCD Text Color */ 00094 LCD_SetTextColor(Blue); 00095 /* Set the LCD Text size */ 00096 LCD_SetFont(&Font12x12); 00097 00098 /* Display Messages on the the LCD */ 00099 LCD_DisplayStringLine(LINE(0x7), (uint8_t *)MESSAGE2); 00100 LCD_DisplayStringLine(LINE(0x8), (uint8_t *)MESSAGE3); 00101 00102 /* Set the LCD Text size */ 00103 LCD_SetFont(&Font16x24); 00104 00105 /* Configures LED 1..4 */ 00106 STM_EVAL_LEDInit(LED1); 00107 STM_EVAL_LEDInit(LED2); 00108 STM_EVAL_LEDInit(LED3); 00109 STM_EVAL_LEDInit(LED4); 00110 00111 /* Configure Push button key */ 00112 STM_EVAL_PBInit(BUTTON_TAMPER, BUTTON_MODE_EXTI); 00113 00114 /* Configure Push button sel */ 00115 STM_EVAL_PBInit(BUTTON_SEL, BUTTON_MODE_EXTI); 00116 00117 /* CAN configuration */ 00118 CAN_Config(); 00119 00120 /* Infinite loop */ 00121 while(1) 00122 { 00123 } 00124 } 00125 00126 /** 00127 * @brief Configures the CAN. 00128 * @param None 00129 * @retval None 00130 */ 00131 static void CAN_Config(void) 00132 { 00133 GPIO_InitTypeDef GPIO_InitStructure; 00134 NVIC_InitTypeDef NVIC_InitStructure; 00135 CAN_InitTypeDef CAN_InitStructure; 00136 CAN_FilterInitTypeDef CAN_FilterInitStructure; 00137 00138 /* CAN GPIOs configuration **************************************************/ 00139 00140 /* Enable GPIO clock */ 00141 RCC_AHBPeriphClockCmd(CAN_GPIO_CLK, ENABLE); 00142 00143 /* Connect CAN pins to AF7 */ 00144 GPIO_PinAFConfig(CAN_GPIO_PORT, CAN_RX_SOURCE, CAN_AF_PORT); 00145 GPIO_PinAFConfig(CAN_GPIO_PORT, CAN_TX_SOURCE, CAN_AF_PORT); 00146 00147 /* Configure CAN RX and TX pins */ 00148 GPIO_InitStructure.GPIO_Pin = CAN_RX_PIN | CAN_TX_PIN; 00149 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF; 00150 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; 00151 GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; 00152 GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP; 00153 GPIO_Init(CAN_GPIO_PORT, &GPIO_InitStructure); 00154 00155 /* NVIC configuration *******************************************************/ 00156 NVIC_InitStructure.NVIC_IRQChannel = CEC_CAN_IRQn; 00157 NVIC_InitStructure.NVIC_IRQChannelPriority = 0x0; 00158 NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; 00159 NVIC_Init(&NVIC_InitStructure); 00160 00161 /* CAN configuration ********************************************************/ 00162 /* Enable CAN clock */ 00163 RCC_APB1PeriphClockCmd(CAN_CLK, ENABLE); 00164 00165 /* CAN register init */ 00166 CAN_DeInit(CANx); 00167 CAN_StructInit(&CAN_InitStructure); 00168 00169 /* CAN cell init */ 00170 CAN_InitStructure.CAN_TTCM = DISABLE; 00171 CAN_InitStructure.CAN_ABOM = DISABLE; 00172 CAN_InitStructure.CAN_AWUM = DISABLE; 00173 CAN_InitStructure.CAN_NART = DISABLE; 00174 CAN_InitStructure.CAN_RFLM = DISABLE; 00175 CAN_InitStructure.CAN_TXFP = DISABLE; 00176 CAN_InitStructure.CAN_Mode = CAN_Mode_Normal; 00177 CAN_InitStructure.CAN_SJW = CAN_SJW_1tq; 00178 00179 /* CAN Baudrate = 1MBps (CAN clocked at 36 MHz) */ 00180 CAN_InitStructure.CAN_BS1 = CAN_BS1_9tq; 00181 CAN_InitStructure.CAN_BS2 = CAN_BS2_8tq; 00182 CAN_InitStructure.CAN_Prescaler = 2; 00183 CAN_Init(CANx, &CAN_InitStructure); 00184 00185 /* CAN filter init "FIFO0" */ 00186 CAN_FilterInitStructure.CAN_FilterNumber = 0; 00187 CAN_FilterInitStructure.CAN_FilterMode = CAN_FilterMode_IdList; 00188 CAN_FilterInitStructure.CAN_FilterScale = CAN_FilterScale_32bit; 00189 CAN_FilterInitStructure.CAN_FilterIdHigh = 0x6420; 00190 CAN_FilterInitStructure.CAN_FilterIdLow = 0x2461; 00191 CAN_FilterInitStructure.CAN_FilterMaskIdHigh = 0x0000; 00192 CAN_FilterInitStructure.CAN_FilterMaskIdLow = 0x0000; 00193 CAN_FilterInitStructure.CAN_FilterFIFOAssignment = 0; 00194 CAN_FilterInitStructure.CAN_FilterActivation = ENABLE; 00195 CAN_FilterInit(&CAN_FilterInitStructure); 00196 00197 /* CAN filter init "FIFO1" */ 00198 CAN_FilterInitStructure.CAN_FilterNumber = 1; 00199 CAN_FilterInitStructure.CAN_FilterMode = CAN_FilterMode_IdList; 00200 CAN_FilterInitStructure.CAN_FilterScale = CAN_FilterScale_32bit; 00201 CAN_FilterInitStructure.CAN_FilterIdHigh = 0x2460; 00202 CAN_FilterInitStructure.CAN_FilterIdLow = 0x0000; 00203 CAN_FilterInitStructure.CAN_FilterMaskIdHigh = 0x0000; 00204 CAN_FilterInitStructure.CAN_FilterMaskIdLow = 0x0000; 00205 CAN_FilterInitStructure.CAN_FilterFIFOAssignment = 1; 00206 CAN_FilterInitStructure.CAN_FilterActivation = ENABLE; 00207 CAN_FilterInit(&CAN_FilterInitStructure); 00208 00209 00210 /* Transmit Structure preparation */ 00211 TxMessage.StdId = 0x321; 00212 TxMessage.ExtId = 0x00; 00213 TxMessage.RTR = CAN_RTR_DATA; 00214 TxMessage.IDE = CAN_ID_STD; 00215 TxMessage.DLC = 1; 00216 00217 /* Transmit Structure preparation 2*/ 00218 TxMessage1.StdId = 0x123; 00219 TxMessage1.ExtId = 0x01; 00220 TxMessage1.RTR = CAN_RTR_DATA; 00221 TxMessage1.IDE = CAN_ID_STD; 00222 TxMessage1.DLC = 1; 00223 00224 /* Enable FIFO 0 message pending Interrupt */ 00225 CAN_ITConfig(CANx, CAN_IT_FMP0, ENABLE); 00226 00227 /* Enable FIFO 1 message pending Interrupt */ 00228 CAN_ITConfig(CANx, CAN_IT_FMP1, ENABLE); 00229 } 00230 00231 /** 00232 * @brief Turn ON/OFF the dedicated led 00233 * @param Ledstatus: Led number from 1 to 4. 00234 * @retval None 00235 */ 00236 void LED_Display(uint8_t Ledstatus) 00237 { 00238 /* Turn off all leds */ 00239 STM_EVAL_LEDOff(LED1); 00240 STM_EVAL_LEDOff(LED2); 00241 STM_EVAL_LEDOff(LED3); 00242 STM_EVAL_LEDOff(LED4); 00243 00244 switch(Ledstatus) 00245 { 00246 case(1): 00247 STM_EVAL_LEDOn(LED1); 00248 break; 00249 00250 case(2): 00251 STM_EVAL_LEDOn(LED2); 00252 break; 00253 00254 case(3): 00255 STM_EVAL_LEDOn(LED3); 00256 break; 00257 00258 case(4): 00259 STM_EVAL_LEDOn(LED4); 00260 break; 00261 default: 00262 break; 00263 } 00264 } 00265 00266 #ifdef USE_FULL_ASSERT 00267 00268 /** 00269 * @brief Reports the name of the source file and the source line number 00270 * where the assert_param error has occurred. 00271 * @param file: pointer to the source file name 00272 * @param line: assert_param error line source number 00273 * @retval None 00274 */ 00275 void assert_failed(uint8_t* file, uint32_t line) 00276 { 00277 /* User can add his own implementation to report the file name and line number, 00278 ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */ 00279 00280 /* Infinite loop */ 00281 while (1) 00282 { 00283 } 00284 } 00285 #endif 00286 00287 /** 00288 * @} 00289 */ 00290 00291 /** 00292 * @} 00293 */ 00294 00295 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/