/** * @brief This function handles CEC interrupt request. * @param None * @retval None */ void CEC_IRQHandler(void) { /********************** Reception *******************************************/ /* Check if a reception error occured */ if(CEC->ISTR & (CEC_INT_RAE| CEC_INT_RLBPE| CEC_INT_RSBPE| CEC_INT_RBRE| CEC_INT_RO)) { RecepErrorCode = CEC->ISTR; CEC->ISTR = (CEC_INT_RAE| CEC_INT_RLBPE| CEC_INT_RSBPE| CEC_INT_RBRE| CEC_INT_RO); ReceivedFrame = 2; } if(CEC_GetIntBitState(CEC_INT_RBR)) { /* Check if the byte received is a Header */ ReceiveBuffer[rcv_inc] = CEC_ReceiveData(); rcv_inc++; /* Clear all reception flags */ CEC_ClearIntBitState(CEC_INT_RBR); } /* Check if the byte received is the last one of the message */ if(CEC_GetIntBitState(CEC_INT_REND)) { ReceivedFrame = 1; rcv_inc = 0; /* Clear all reception flags */ CEC_ClearIntBitState(CEC_INT_REND); } /********************** Transmission ****************************************/ /* Check if a transmission error occurred */ if(CEC->ISTR& (CEC_INT_TAE| CEC_INT_TE| CEC_INT_TU| CEC_INT_LSTARB)) { TransErrorCode = CEC->ISTR; CEC->ISTR = (CEC_INT_TAE| CEC_INT_TE| CEC_INT_TU| CEC_INT_LSTARB); } /* Check if end of message bit is set in the data to be transmitted */ if(CEC_GetIntBitState(CEC_INT_TEND)) { CEC_ClearIntBitState(CEC_INT_TEND| CEC_INT_TBR); send_inc = 0; } /* Check if data byte has been sent */ else if(CEC_GetIntBitState(CEC_INT_TBR)) { /* Set EOM bit if the byte to be transmitted is the last one of the Transmit Buffer */ if(send_inc++ == (ByteNumber - 1)) { CEC_EndOfMessage(); CEC_SendData(*SendBuffer++); } else { /* Put the byte in the TX Buffer */ CEC_SendData(*SendBuffer++); } CEC_ClearIntBitState(CEC_INT_TBR); } }
/** * @brief This function handles EXTI Lines 4 to 15 interrupts requests. * @param None * @retval None */ void EXTI4_15_IRQHandler(void) { STM_EVAL_LEDOff(LED1); STM_EVAL_LEDOff(LED2); STM_EVAL_LEDOff(LED3); STM_EVAL_LEDOff(LED4); /* Generate rising edge on Joystick button to detect when we push Joystick button to initiate transmission */ if(EXTI_GetITStatus(RIGHT_BUTTON_EXTI_LINE) != RESET) { /* Build the Header block to send */ HeaderBlockValueToSend = (((MyLogicalAddress1 & 0xF) << 4)|(MyFollowerAddress1 & 0xF)); /* Clear RIGHT Button EXTI line pending bit */ EXTI_ClearITPendingBit(RIGHT_BUTTON_EXTI_LINE); } else if(EXTI_GetITStatus(LEFT_BUTTON_EXTI_LINE) != RESET) { /* Build the Header block to send */ HeaderBlockValueToSend = (((MyLogicalAddress1 & 0xF) << 4)|(MyFollowerAddress2 & 0xF)); /* Clear LEFT Button EXTI line pending bit */ EXTI_ClearITPendingBit(LEFT_BUTTON_EXTI_LINE); } /* Write single Data in the TX Buffer to Transmit through the CEC peripheral */ CEC_SendData(HeaderBlockValueToSend); /* Initiate Message Transmission */ CEC_StartOfMessage(); }
/** * @brief This function handles EXTI Lines 4 to 15 interrupts requests. * @param None * @retval None */ void EXTI4_15_IRQHandler(void) { for (send_inc=0;send_inc<10;send_inc++) { TransmitBuffer[send_inc]=0; } send_inc =0; STM_EVAL_LEDOff(LED1); STM_EVAL_LEDOff(LED2); STM_EVAL_LEDOff(LED3); STM_EVAL_LEDOff(LED4); /* Generate rising edge on Joystick button to detect when we push Joystick button to initiate transmission */ if(EXTI_GetITStatus(RIGHT_BUTTON_EXTI_LINE) != RESET) { TransmitBuffer[send_inc++] = 0x46; ByteNumber = 0x02; /* Clear RIGHT Button EXTI line pending bit */ EXTI_ClearITPendingBit(RIGHT_BUTTON_EXTI_LINE); } else if(EXTI_GetITStatus(LEFT_BUTTON_EXTI_LINE) != RESET) { TransmitBuffer[send_inc++] = 0x9F; ByteNumber = 0x02; /* Clear LEFT Button EXTI line pending bit */ EXTI_ClearITPendingBit(LEFT_BUTTON_EXTI_LINE); } else if(EXTI_GetITStatus(UP_BUTTON_EXTI_LINE) != RESET) { TransmitBuffer[send_inc++] = 0x44; TransmitBuffer[send_inc++] = 0x41; ByteNumber = 0x03; /* Clear UP Button EXTI line pending bit */ EXTI_ClearITPendingBit(UP_BUTTON_EXTI_LINE); } else if(EXTI_GetITStatus(DOWN_BUTTON_EXTI_LINE) != RESET) { TransmitBuffer[send_inc++] = 0x44; TransmitBuffer[send_inc++] = 0x42; ByteNumber = 0x03; /* Clear DOWN Button EXTI line pending bit */ EXTI_ClearITPendingBit(DOWN_BUTTON_EXTI_LINE); } send_inc =0; /* Write single Data in the TX Buffer to Transmit through the CEC peripheral */ CEC_SendData(HeaderBlockValueToSend); /* Initiate Message Transmission */ CEC_StartOfMessage(); }
/** * @brief This function handles EXTI4_15 interrupt request. * @param None * @retval None */ void EXTI4_15_IRQHandler(void) { /* Get the button interrupt bit state */ if(EXTI_GetIntBitState(EXTI_LINE7) != RESET) { ByteNumber = 2; CEC_SendData(0x12); SendBuffer = TransmitBuffer1; CEC_StartOfMessage(); EXTI_ClearIntBitState(EXTI_LINE7); } /* Get the button interrupt bit state */ else if(EXTI_GetIntBitState(EXTI_LINE13) != RESET) { ByteNumber = 2; CEC_SendData(0x12); SendBuffer = TransmitBuffer2; CEC_StartOfMessage(); EXTI_ClearIntBitState(EXTI_LINE13); } }
/** * @brief This function handles External lines 15 to 10 interrupt request. * @param None * @retval None */ void EXTI15_10_IRQHandler(void) { if(EXTI_GetITStatus(EXTI_Line13) != RESET) { Tab_Tx[0] = 0x44; Tab_Tx[1] = 0x42; TxSize = 0x03; EXTI_ClearITPendingBit(EXTI_Line13); } /* Write single Data in the TX Buffer to Transmit through the CEC peripheral */ CEC_SendData(HeaderBlockValueToSend); /* Initiate Message Transmission */ CEC_StartOfMessage(); }
/** * @brief This function handles CEC interrupt request. * @param None * @retval None */ void CEC_IRQHandler(void) { /********************** Reception *******************************************/ /* Check if a reception error occurred */ if (CEC->ISR & (CEC_IT_RXACKE | CEC_IT_LBPE | CEC_IT_SBPE | CEC_IT_BRE | CEC_IT_RXOVR)) { CEC->ISR = (CEC_IT_RXACKE | CEC_IT_LBPE | CEC_IT_SBPE | CEC_IT_BRE | CEC_IT_RXOVR); ReceivedFrame = 2; } if (CEC_GetITStatus(CEC_IT_RXBR)) { /* Check if the byte received is a Header */ if (rcv_inc == 0) { Tab_Rx[rcv_inc] = CEC_ReceiveData(); rcv_inc++; } else /* Receive each byte except header and opcode in the reception buffer */ { Tab_Rx[rcv_inc] = CEC_ReceiveData(); rcv_inc++; } CEC_ClearITPendingBit(CEC_IT_RXBR); } /* Check if the byte received is the last one of the message */ if (CEC_GetITStatus(CEC_IT_RXEND)) { ReceivedFrame = 1; /* Clear all reception flags */ CEC_ClearITPendingBit(CEC_IT_RXEND); rcv_inc =0; } /********************** Transmission ****************************************/ /* Check if a transmission error occurred */ if (CEC->ISR & (CEC_IT_TXACKE | CEC_IT_TXERR | CEC_IT_TXUDR | CEC_IT_ARBLST)) { CEC->ISR = (CEC_IT_TXACKE | CEC_IT_TXERR | CEC_IT_TXUDR | CEC_IT_ARBLST); /* KO */ /* Turn on LED3 */ } /* Check if end of message bit is set in the data to be transmitted */ if (CEC_GetITStatus(CEC_IT_TXEND)) { CEC_ClearITPendingBit(CEC_IT_TXEND | CEC_IT_TXBR); send_inc = 0; /* OK */ /* Turn on LED1 */ } /* Check if data byte has been sent */ else if (CEC_GetITStatus(CEC_IT_TXBR)) { /* Set EOM bit if the byte to be transmitted is the last one of the Transmit Buffer */ if (send_inc == TxSize ) { CEC_EndOfMessage(); CEC_SendData(Tab_Tx[send_inc++]); } else { /* Put the byte in the TX Buffer */ CEC_SendData(Tab_Tx[send_inc++]); } CEC_ClearITPendingBit(CEC_IT_TXBR); } }
/** * @brief This function handles CEC global interrupt request. * @param None * @retval None */ void CEC_IRQHandler(void) { /********************** Reception *******************************************/ /* Check if a reception error occured */ if (CEC->ISR & (CEC_IT_RXACKE | CEC_IT_LBPE | CEC_IT_SBPE | CEC_IT_BRE | CEC_IT_RXOVR)) { RecepErrorCode = CEC->ISR; CEC->ISR = (CEC_IT_RXACKE | CEC_IT_LBPE | CEC_IT_SBPE | CEC_IT_BRE | CEC_IT_RXOVR); CECReceivedFrame = 2; } if (CEC_GetITStatus(CEC_IT_RXBR)) { /* Check if the byte received is a Header */ if (rcv_inc == 0) { ReceiverAddress = (CEC_ReceiveData() & 0x0F); rcv_inc++; } else /* Receive each byte except header and opcode in the reception buffer */ { ReceiveBuffer[rcv_inc-1] = CEC_ReceiveData(); rcv_inc++; } CEC_ClearITPendingBit(CEC_IT_RXBR); } /* Check if the byte received is the last one of the message */ if (CEC_GetITStatus(CEC_IT_RXEND)) { CECReceivedFrame = 1; rcv_inc = 0; /* Clear all reception flags */ CEC_ClearITPendingBit(CEC_IT_RXEND); } /********************** Transmission ****************************************/ /* Check if a transmission error occurred */ if (CEC->ISR & (CEC_IT_TXACKE | CEC_IT_TXERR | CEC_IT_TXUDR | CEC_IT_ARBLST)) { CECTransErrorCode = CEC->ISR; CEC->ISR = (CEC_IT_TXACKE | CEC_IT_TXERR | CEC_IT_TXUDR | CEC_IT_ARBLST); /* KO */ /* Turn on LED3 */ STM_EVAL_LEDOn(LED3); #ifdef LCD_DISPLAY LCD_SetBackColor(LCD_COLOR_RED); LCD_SetTextColor(LCD_COLOR_WHITE); LCD_DisplayStringLine(LCD_LINE_7, (uint8_t *)"Send status : Failed"); #endif } /* Check if end of message bit is set in the data to be transmitted */ if (CEC_GetITStatus(CEC_IT_TXEND)) { CEC_ClearITPendingBit(CEC_IT_TXEND | CEC_IT_TXBR); /* OK */ /* Turn on LED1 */ STM_EVAL_LEDOn(LED1); #ifdef LCD_DISPLAY LCD_SetBackColor(LCD_COLOR_GREEN); LCD_SetTextColor(LCD_COLOR_WHITE); LCD_DisplayStringLine(LCD_LINE_7, (uint8_t *)"Send status: Succeeded"); #endif } /* Check if data byte has been sent */ else if (CEC_GetITStatus(CEC_IT_TXBR)) { /* Set EOM bit if the byte to be transmitted is the last one of the Transmit Buffer */ if (send_inc == (ByteNumber - 1)) { CEC_EndOfMessage(); CEC_SendData(TransmitBuffer[send_inc++]); send_inc=0; } else { /* Put the byte in the TX Buffer */ CEC_SendData(TransmitBuffer[send_inc++]); } CEC_ClearITPendingBit(CEC_IT_TXBR); } }