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STM32F0xx Standard Peripherals Firmware Library
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STM32F0xx_StdPeriph_Examples/CEC/CEC_MultiAddress/main.c
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00001 /** 00002 ****************************************************************************** 00003 * @file CEC/CEC_MultiAddress/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_MultiAddress 00036 * @{ 00037 */ 00038 00039 /* Private typedef -----------------------------------------------------------*/ 00040 /* Private define ------------------------------------------------------------*/ 00041 /* Private macro -------------------------------------------------------------*/ 00042 /* Private variables ---------------------------------------------------------*/ 00043 00044 uint8_t MyLogicalAddress1 = 0x0, MyLogicalAddress2 = 0x0; 00045 uint8_t MyFollowerAddress1 = 0x0, MyFollowerAddress2 = 0x0; 00046 __IO uint8_t TransferStatus = 0; 00047 extern uint8_t ReceiverAddress; 00048 extern __IO uint8_t CECReceivedFrame; 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 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 #if defined (DEVICE_1) 00085 /* Configure the Joystick button and its associated EXTI Line */ 00086 STM_EVAL_PBInit(BUTTON_RIGHT, BUTTON_MODE_EXTI); 00087 STM_EVAL_PBInit(BUTTON_LEFT, BUTTON_MODE_EXTI); 00088 00089 MyLogicalAddress1 = DEVICE_ADDRESS_1; 00090 MyFollowerAddress1 = DEVICE_ADDRESS_2; 00091 MyFollowerAddress2 = DEVICE_ADDRESS_3; 00092 #elif defined (DEVICE_2) 00093 MyLogicalAddress1 = DEVICE_ADDRESS_2; 00094 MyLogicalAddress2 = DEVICE_ADDRESS_3; 00095 MyFollowerAddress1 = DEVICE_ADDRESS_1; 00096 #endif /* DEVICE_1 */ 00097 00098 /* CEC configuration */ 00099 CEC_Config(); 00100 00101 #ifdef LCD_DISPLAY 00102 /* Clear the LCD */ 00103 LCD_Clear(LCD_COLOR_WHITE); 00104 LCD_SetBackColor(LCD_COLOR_BLACK); 00105 LCD_SetTextColor(LCD_COLOR_WHITE); 00106 #if defined (DEVICE_1) 00107 LCD_DisplayStringLine(LCD_LINE_0, (uint8_t *)"CEC Initiator device"); 00108 LCD_SetBackColor(LCD_COLOR_WHITE); 00109 LCD_SetTextColor(LCD_COLOR_BLUE); 00110 LCD_DisplayStringLine(LCD_LINE_2, (uint8_t *)"Choose CEC Follower "); 00111 LCD_DisplayStringLine(LCD_LINE_3, (uint8_t *)"Address : "); 00112 LCD_DisplayStringLine(LCD_LINE_4, (uint8_t *)"RIGHT=> Tuner "); 00113 LCD_DisplayStringLine(LCD_LINE_5, (uint8_t *)"LEFT => Audio System"); 00114 #elif defined (DEVICE_2) 00115 LCD_DisplayStringLine(LCD_LINE_0, (uint8_t *)"CEC Follower device "); 00116 #endif /* DEVICE_1 */ 00117 #endif /* LCD_DISPLAY */ 00118 00119 while(1) 00120 { 00121 /* If a frame has been received */ 00122 while(CECReceivedFrame == 0) 00123 {} 00124 00125 if (CECReceivedFrame == 1) 00126 { 00127 if ((ReceiverAddress&0xF) == 0x03) /* Test on the Receiver value */ 00128 { 00129 /* Turn on LED1 */ 00130 STM_EVAL_LEDOn(LED1); 00131 /* Turn off LED4 */ 00132 STM_EVAL_LEDOff(LED4); 00133 /* Turn off LED3 */ 00134 STM_EVAL_LEDOff(LED3); 00135 #ifdef LCD_DISPLAY 00136 LCD_SetBackColor(LCD_COLOR_GREEN); 00137 LCD_SetTextColor(LCD_COLOR_WHITE); 00138 LCD_DisplayStringLine(LCD_LINE_7, (uint8_t *)"Receive : Succeeded "); 00139 LCD_DisplayStringLine(LCD_LINE_8, (uint8_t *)"Receiver Address is "); 00140 LCD_DisplayStringLine(LCD_LINE_9, (uint8_t *)" Tuner "); 00141 #endif /* LCD_DISPLAY */ 00142 } 00143 else if ((ReceiverAddress &0xF) ==0x05) /* Test on the Receiver value */ 00144 { 00145 /* Turn on LED4 */ 00146 STM_EVAL_LEDOn(LED4); 00147 /* Turn off LED1 */ 00148 STM_EVAL_LEDOff(LED1); 00149 /* Turn off LED3 */ 00150 STM_EVAL_LEDOff(LED3); 00151 #ifdef LCD_DISPLAY 00152 LCD_SetBackColor(LCD_COLOR_BLUE2); 00153 LCD_SetTextColor(LCD_COLOR_WHITE); 00154 LCD_DisplayStringLine(LCD_LINE_7, (uint8_t *)"Receive : Succeeded "); 00155 LCD_DisplayStringLine(LCD_LINE_8, (uint8_t *)"Receiver Address is "); 00156 LCD_DisplayStringLine(LCD_LINE_9, (uint8_t *)" Audio System "); 00157 #endif /* LCD_DISPLAY */ 00158 } 00159 } 00160 else 00161 { 00162 /* KO */ 00163 /* Turn on LED3 */ 00164 STM_EVAL_LEDOn(LED3); 00165 #ifdef LCD_DISPLAY 00166 LCD_SetTextColor(LCD_COLOR_WHITE); 00167 LCD_SetBackColor(LCD_COLOR_RED); 00168 LCD_DisplayStringLine(LCD_LINE_7, (uint8_t *)"Receive : Failed "); 00169 #endif /* LCD_DISPLAY */ 00170 } 00171 00172 CECReceivedFrame = 0; 00173 } 00174 } 00175 /** 00176 * @brief Configures the CEC peripheral. 00177 * @param None 00178 * @retval None 00179 */ 00180 static void CEC_Config(void) 00181 { 00182 CEC_InitTypeDef CEC_InitStructure; 00183 NVIC_InitTypeDef NVIC_InitStructure; 00184 GPIO_InitTypeDef GPIO_InitStructure; 00185 00186 /* Enable CEC clocks */ 00187 RCC_APB1PeriphClockCmd(RCC_APB1Periph_CEC , ENABLE); 00188 00189 /* Enable CEC_LINE_GPIO clocks */ 00190 RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOB, ENABLE); 00191 00192 /* Configure CEC_LINE_GPIO as Output open drain */ 00193 #ifdef USE_STM320518_EVAL 00194 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10; 00195 #else 00196 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8; 00197 #endif /* USE_STM320518_EVAL */ 00198 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF; 00199 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; 00200 GPIO_InitStructure.GPIO_OType = GPIO_OType_OD; 00201 GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL ; 00202 GPIO_Init(GPIOB, &GPIO_InitStructure); 00203 00204 /* Enable the CEC global Interrupt (with higher priority) */ 00205 #ifdef USE_STM320518_EVAL 00206 NVIC_InitStructure.NVIC_IRQChannel = CEC_IRQn; 00207 #else 00208 NVIC_InitStructure.NVIC_IRQChannel = CEC_CAN_IRQn; 00209 #endif /* USE_STM320518_EVAL */ 00210 NVIC_InitStructure.NVIC_IRQChannelPriority = 0; 00211 NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; 00212 NVIC_Init(&NVIC_InitStructure); 00213 00214 /* Configure CEC */ 00215 CEC_InitStructure.CEC_SignalFreeTime = CEC_SignalFreeTime_Standard; 00216 CEC_InitStructure.CEC_RxTolerance = CEC_RxTolerance_Standard; 00217 CEC_InitStructure.CEC_StopReception = CEC_StopReception_Off; 00218 CEC_InitStructure.CEC_BitRisingError = CEC_BitRisingError_Off; 00219 CEC_InitStructure.CEC_LongBitPeriodError = CEC_LongBitPeriodError_Off; 00220 CEC_InitStructure.CEC_BRDNoGen = CEC_BRDNoGen_Off; 00221 CEC_InitStructure.CEC_SFTOption = CEC_SFTOption_Off; 00222 CEC_Init(&CEC_InitStructure); 00223 00224 /* Set the CEC initiator address */ 00225 CEC_OwnAddressConfig(MyLogicalAddress1); 00226 00227 #if defined (DEVICE_2) 00228 /* Set the CEC initiator address 2 */ 00229 CEC_OwnAddressConfig(MyLogicalAddress2); 00230 #endif /* DEVICE_2 */ 00231 00232 #if defined (DEVICE_1) 00233 /* Activate CEC interrupts associated to the set of TX flags */ 00234 CEC_ITConfig(CEC_IT_TXEND|CEC_IT_TXBR,ENABLE); 00235 00236 /* Activate CEC interrupts associated to the set of TX error */ 00237 CEC_ITConfig(CEC_IT_TXACKE|CEC_IT_TXERR|CEC_IT_TXUDR|CEC_IT_ARBLST,ENABLE); 00238 00239 #elif defined (DEVICE_2) 00240 /* Activate CEC interrupts associated to the set of RX flags */ 00241 CEC_ITConfig(CEC_IT_RXEND|CEC_IT_RXBR,ENABLE); 00242 00243 /* Activate CEC interrupts associated to the set of RX error */ 00244 CEC_ITConfig(CEC_IT_RXACKE|CEC_IT_LBPE|CEC_IT_SBPE|CEC_IT_BRE|CEC_IT_RXOVR,ENABLE); 00245 #endif /* DEVICE_1 */ 00246 /* Enable CEC */ 00247 CEC_Cmd(ENABLE); 00248 } 00249 00250 00251 #ifdef USE_FULL_ASSERT 00252 00253 /** 00254 * @brief Reports the name of the source file and the source line number 00255 * where the assert_param error has occurred. 00256 * @param file: pointer to the source file name 00257 * @param line: assert_param error line source number 00258 * @retval None 00259 */ 00260 void assert_failed(uint8_t* file, uint32_t line) 00261 { 00262 /* User can add his own implementation to report the file name and line number, 00263 ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */ 00264 00265 /* Infinite loop */ 00266 while (1) 00267 { 00268 } 00269 } 00270 #endif 00271 00272 /** 00273 * @} 00274 */ 00275 00276 /** 00277 * @} 00278 */ 00279 00280 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/