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STM32F0xx Standard Peripherals Firmware Library
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STM32F0xx_StdPeriph_Examples/CEC/CEC_DataExchange/main.c
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00001 /** 00002 ****************************************************************************** 00003 * @file CEC/CEC_DataExchange/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 /* Includes ------------------------------------------------------------------*/ 00029 #include "main.h" 00030 00031 /** @addtogroup STM32F0xx_StdPeriph_Examples 00032 * @{ 00033 */ 00034 00035 /** @addtogroup CEC_DataExchange 00036 * @{ 00037 */ 00038 00039 /* Private typedef -----------------------------------------------------------*/ 00040 /* Private define ------------------------------------------------------------*/ 00041 /* Private macro -------------------------------------------------------------*/ 00042 /* Private variables ---------------------------------------------------------*/ 00043 uint8_t MyLogicalAddress1 = 0x0, MyFollowerAddress = 0x0; 00044 uint8_t HeaderBlockValueToSend = 0; 00045 __IO uint8_t TransferStatus = 0; 00046 extern uint8_t ReceiveBuffer[10]; 00047 extern __IO uint8_t ReceivedFrame1; 00048 extern uint8_t rcv_inc; 00049 00050 /* Private function prototypes -----------------------------------------------*/ 00051 static void CEC_Config(void); 00052 00053 /* Private functions ---------------------------------------------------------*/ 00054 00055 /** 00056 * @brief Main program. 00057 * @param None 00058 * @retval None 00059 */ 00060 int main(void) 00061 { 00062 /*!< At this stage the microcontroller clock setting is already configured, 00063 this is done through SystemInit() function which is called from startup 00064 file (startup_stm32f0xx.s) before to branch to application main. 00065 To reconfigure the default setting of SystemInit() function, refer to 00066 system_stm32f0xx.c file 00067 */ 00068 #ifdef LCD_DISPLAY 00069 /* Initialize the LCD */ 00070 #ifdef USE_STM320518_EVAL 00071 STM320518_LCD_Init(); 00072 #else 00073 STM32072B_LCD_Init(); 00074 #endif /* USE_STM320518_EVAL */ 00075 #endif /* LCD_DISPLAY */ 00076 00077 /* Initialize LEDs and JoyStick Button available on STM320518-EVAL board */ 00078 /* Configure LED1, LED2, LED3 and LED4 */ 00079 STM_EVAL_LEDInit(LED1); 00080 STM_EVAL_LEDInit(LED2); 00081 STM_EVAL_LEDInit(LED3); 00082 STM_EVAL_LEDInit(LED4); 00083 00084 /* Configure the Joystick button and its associated EXTI Line */ 00085 STM_EVAL_PBInit(BUTTON_RIGHT, BUTTON_MODE_EXTI); 00086 STM_EVAL_PBInit(BUTTON_LEFT, BUTTON_MODE_EXTI); 00087 STM_EVAL_PBInit(Button_UP, BUTTON_MODE_EXTI); 00088 STM_EVAL_PBInit(Button_DOWN, BUTTON_MODE_EXTI); 00089 00090 #if defined (DEVICE_1) 00091 MyLogicalAddress1 = DEVICE_ADDRESS_1; 00092 MyFollowerAddress = DEVICE_ADDRESS_2; 00093 #elif defined (DEVICE_2) 00094 MyLogicalAddress1 = DEVICE_ADDRESS_2; 00095 MyFollowerAddress = DEVICE_ADDRESS_1; 00096 #endif /* DEVICE_1 */ 00097 00098 /* CEC configuration */ 00099 CEC_Config(); 00100 00101 /* Build the Header block to send */ 00102 HeaderBlockValueToSend = (((MyLogicalAddress1 & 0xF) << 4)|(MyFollowerAddress & 0xF)); 00103 00104 #ifdef LCD_DISPLAY 00105 /* Clear the LCD */ 00106 LCD_Clear(LCD_COLOR_BLUE); 00107 LCD_SetBackColor(LCD_COLOR_BLACK); 00108 LCD_SetTextColor(LCD_COLOR_WHITE); 00109 LCD_DisplayStringLine(LCD_LINE_0, (uint8_t *)" Select CEC Command "); 00110 LCD_SetBackColor(LCD_COLOR_BLUE); 00111 LCD_SetTextColor(LCD_COLOR_WHITE); 00112 LCD_DisplayStringLine(LCD_LINE_2, (uint8_t *)"RIGHT : OSD Name "); 00113 LCD_DisplayStringLine(LCD_LINE_3, (uint8_t *)"LEFT : CEC Version "); 00114 LCD_DisplayStringLine(LCD_LINE_4, (uint8_t *)"UP : Volume Up "); 00115 LCD_DisplayStringLine(LCD_LINE_5, (uint8_t *)"DOWN : Volume Down "); 00116 #endif /* LCD_DISPLAY */ 00117 00118 while(1) 00119 { 00120 /* If a frame has been received */ 00121 while(ReceivedFrame1 == 0) 00122 {} 00123 00124 if (ReceivedFrame1 == 1) 00125 { 00126 /* OK */ 00127 if (ReceiveBuffer[1] ==0x44) /* Test on the opcode value */ 00128 { 00129 /* Receive command is equal to Volume Up(Button Up) */ 00130 if (ReceiveBuffer[2] == 0x41) /* Test on the operand value */ 00131 { 00132 STM_EVAL_LEDOn(LED1); 00133 STM_EVAL_LEDOn(LED2); 00134 STM_EVAL_LEDOn(LED3); 00135 STM_EVAL_LEDOn(LED4); 00136 }/* Test on the operand value */ 00137 else if (ReceiveBuffer[2] == 0x42) /* Receive command is equal to Volume Down(Button Down) */ 00138 { 00139 STM_EVAL_LEDOff(LED1); 00140 STM_EVAL_LEDOff(LED2); 00141 STM_EVAL_LEDOff(LED3); 00142 STM_EVAL_LEDOff(LED4); 00143 } 00144 } 00145 else if (ReceiveBuffer[1] ==0x46) /* Test on the opcode value */ 00146 { 00147 STM_EVAL_LEDOn(LED1); 00148 STM_EVAL_LEDOn(LED2); 00149 STM_EVAL_LEDOff(LED3); 00150 STM_EVAL_LEDOff(LED4); 00151 } 00152 else if (ReceiveBuffer[1] ==0x9F) /* Test on the opcode value */ 00153 { 00154 STM_EVAL_LEDOff(LED1); 00155 STM_EVAL_LEDOff(LED2); 00156 STM_EVAL_LEDOn(LED3); 00157 STM_EVAL_LEDOn(LED4); 00158 } 00159 00160 #ifdef LCD_DISPLAY 00161 LCD_SetBackColor(LCD_COLOR_GREEN); 00162 LCD_DisplayStringLine(LCD_LINE_7, (uint8_t *)"Receive : Succeeded "); 00163 #endif /* LCD_DISPLAY */ 00164 } 00165 else 00166 { 00167 /* KO */ 00168 /* Turn on LED2 */ 00169 STM_EVAL_LEDOn(LED3); 00170 #ifdef LCD_DISPLAY 00171 LCD_SetBackColor(LCD_COLOR_RED); 00172 LCD_DisplayStringLine(LCD_LINE_7, (uint8_t *)"Receive : Failed "); 00173 #endif /* LCD_DISPLAY */ 00174 } 00175 ReceivedFrame1 = 0; 00176 00177 for (rcv_inc=0;rcv_inc<10;rcv_inc++) 00178 { 00179 ReceiveBuffer[rcv_inc]=0; 00180 } 00181 rcv_inc=0; 00182 } 00183 } 00184 /** 00185 * @brief Configures the CEC peripheral. 00186 * @param None 00187 * @retval None 00188 */ 00189 static void CEC_Config(void) 00190 { 00191 CEC_InitTypeDef CEC_InitStructure; 00192 NVIC_InitTypeDef NVIC_InitStructure; 00193 GPIO_InitTypeDef GPIO_InitStructure; 00194 00195 /* Enable CEC clocks */ 00196 RCC_APB1PeriphClockCmd(RCC_APB1Periph_CEC , ENABLE); 00197 00198 /* Enable CEC_LINE_GPIO clocks */ 00199 RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOB, ENABLE); 00200 00201 /* Configure CEC_LINE_GPIO as Output open drain */ 00202 #ifdef USE_STM320518_EVAL 00203 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10; 00204 #else 00205 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8; 00206 #endif /* USE_STM320518_EVAL */ 00207 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF; 00208 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; 00209 GPIO_InitStructure.GPIO_OType = GPIO_OType_OD; 00210 GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL ; 00211 GPIO_Init(GPIOB, &GPIO_InitStructure); 00212 00213 /* Enable the CEC global Interrupt (with higher priority) */ 00214 #ifdef USE_STM320518_EVAL 00215 NVIC_InitStructure.NVIC_IRQChannel = CEC_IRQn; 00216 #else 00217 NVIC_InitStructure.NVIC_IRQChannel = CEC_CAN_IRQn; 00218 #endif /* USE_STM320518_EVAL */ 00219 NVIC_InitStructure.NVIC_IRQChannelPriority = 0; 00220 NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; 00221 NVIC_Init(&NVIC_InitStructure); 00222 00223 /* Configure CEC */ 00224 CEC_InitStructure.CEC_SignalFreeTime = CEC_SignalFreeTime_Standard; 00225 CEC_InitStructure.CEC_RxTolerance = CEC_RxTolerance_Standard; 00226 CEC_InitStructure.CEC_StopReception = CEC_StopReception_Off; 00227 CEC_InitStructure.CEC_BitRisingError = CEC_BitRisingError_Off; 00228 CEC_InitStructure.CEC_LongBitPeriodError = CEC_LongBitPeriodError_Off; 00229 CEC_InitStructure.CEC_BRDNoGen = CEC_BRDNoGen_Off; 00230 CEC_InitStructure.CEC_SFTOption = CEC_SFTOption_Off; 00231 CEC_Init(&CEC_InitStructure); 00232 00233 /* Set the CEC initiator address */ 00234 CEC_OwnAddressConfig(MyLogicalAddress1); 00235 00236 /* Activate CEC interrupts associated to the set of TX flags */ 00237 CEC_ITConfig(CEC_IT_TXEND|CEC_IT_TXBR,ENABLE); 00238 00239 /* Activate CEC interrupts associated to the set of RX flags */ 00240 CEC_ITConfig(CEC_IT_RXEND|CEC_IT_RXBR,ENABLE); 00241 00242 /* Activate CEC interrupts associated to the set of TX error */ 00243 CEC_ITConfig(CEC_IT_TXACKE|CEC_IT_TXERR|CEC_IT_TXUDR|CEC_IT_ARBLST,ENABLE); 00244 00245 /* Activate CEC interrupts associated to the set of RX error */ 00246 CEC_ITConfig(CEC_IT_RXACKE|CEC_IT_LBPE|CEC_IT_SBPE|CEC_IT_BRE|CEC_IT_RXOVR,ENABLE); 00247 00248 /* Enable CEC */ 00249 CEC_Cmd(ENABLE); 00250 } 00251 00252 00253 #ifdef USE_FULL_ASSERT 00254 00255 /** 00256 * @brief Reports the name of the source file and the source line number 00257 * where the assert_param error has occurred. 00258 * @param file: pointer to the source file name 00259 * @param line: assert_param error line source number 00260 * @retval None 00261 */ 00262 void assert_failed(uint8_t* file, uint32_t line) 00263 { 00264 /* User can add his own implementation to report the file name and line number, 00265 ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */ 00266 00267 /* Infinite loop */ 00268 while (1) 00269 { 00270 } 00271 } 00272 #endif 00273 00274 /** 00275 * @} 00276 */ 00277 00278 /** 00279 * @} 00280 */ 00281 00282 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/