问答

英飞凌TLE9877如何使用Flash中的EEPROM写入数据，大概每次写入几个字节的数据内容，还要能读取出来，我要怎么实现呢。

怎样实现敲击前3个字母实现提示自动补全可能出现的相关库函数名？？比如我输入XMC_GPIO_ 会自动弹出一大堆和GPIO相关的库函数名。和keil一样。 另外问一下XMC4000系列的库函数， 形参命名要怎么找阿阿， 例如XMC_GPIO_SetOutputHigh() ，括号里的命名规则P*_*找了半天才知道是这样命名的，。

[color=#333333][backcolor=rgb(255, 255, 255)][font="]能够从寄存器中读取到数据 默认值应该是0的 正转增大翻转由7FFF开始减小 但是就算把寄存器值为1时带入手册的公式算出来也是128°/s，我觉得这个值应该不是正确的 想请教一下这方面的计算方法[/font][/backcolor][/color]

各位大师： 大家好！我使用英飞凌官方的开发板来调试CAN通讯，CAN通讯的例程为“MCMCAN_1_KIT_TC334_LK”，我将内部环回修改为连接到外部，但是修改后，发现通讯并未调通，且无法进入到TX发送中断，还请熟悉这一块的大师帮忙指导一下，我附上代码： /*********************************************************************************************************************/ /*-----------------------------------------------------Includes------------------------------------------------------*/ /*********************************************************************************************************************/ #include "MCMCAN.h" /*********************************************************************************************************************/ /*-------------------------------------------------Global variables--------------------------------------------------*/ /*********************************************************************************************************************/ McmcanType g_mcmcan; /* Global MCMCAN configuration and control structure */ IfxPort_Pin_Config g_led1; /* Global LED1 configuration and control structure */ IfxPort_Pin_Config g_led2; /* Global LED2 configuration and control structure */ /*********************************************************************************************************************/ /*---------------------------------------------Function Implementations----------------------------------------------*/ /*********************************************************************************************************************/ /* Macro to define Interrupt Service Routine. * This macro: * - defines linker section as .intvec_tc_. * - defines compiler specific attribute for the interrupt functions. * - defines the Interrupt service routine as ISR function. * * IFX_INTERRUPT(isr, vectabNum, priority) * - isr: Name of the ISR function. * - vectabNum: Vector table number. * - priority: Interrupt priority. Refer Usage of Interrupt Macro for more details. */ IFX_INTERRUPT(canIsrTxHandler, 0, ISR_PRIORITY_CAN_TX); IFX_INTERRUPT(canIsrRxHandler, 0, ISR_PRIORITY_CAN_RX); /* Interrupt Service Routine (ISR) called once the TX interrupt has been generated. * Turns on the LED1 to indicate successful CAN message transmission. */ void canIsrTxHandler(void) { /* Clear the "Transmission Completed" interrupt flag */ IfxCan_Node_clearInterruptFlag(g_mcmcan.canSrcNode.node, IfxCan_Interrupt_transmissionCompleted); /* Just to indicate that the CAN message has been transmitted by turning on LED1 */ IfxPort_setPinLow(g_led1.port, g_led1.pinIndex); } /* Interrupt Service Routine (ISR) called once the RX interrupt has been generated. * Compares the content of the received CAN message with the content of the transmitted CAN message * and in case of success, turns on the LED2 to indicate successful CAN message reception. */ void canIsrRxHandler(void) { /* Clear the "Message stored to Dedicated RX Buffer" interrupt flag */ IfxCan_Node_clearInterruptFlag(g_mcmcan.canDstNode.node, IfxCan_Interrupt_messageStoredToDedicatedRxBuffer); /* Read the received CAN message */ IfxCan_Can_readMessage(&g_mcmcan.canDstNode, &g_mcmcan.rxMsg, g_mcmcan.rxData); /* Check if the received data matches with the transmitted one */ if( ( g_mcmcan.rxData[0] == g_mcmcan.txData[0] ) && ( g_mcmcan.rxData[1] == g_mcmcan.txData[1] ) && ( g_mcmcan.rxMsg.messageId == g_mcmcan.txMsg.messageId ) ) { /* Turn on the LED2 to indicate correctness of the received message */ IfxPort_setPinLow(g_led2.port, g_led2.pinIndex); } } /* Function to initialize MCMCAN module and nodes related for this application use case */ void initMcmcan(void) { /* ========================================================================================== * CAN module configuration and initialization: * ========================================================================================== * - load default CAN module configuration into configuration structure * - initialize CAN module with the default configuration * ========================================================================================== */ IfxCan_Can_Pins example_pins; example_pins.txPin=&IfxCan_TXD00_P20_8_OUT; example_pins.txPinMode=IfxPort_OutputMode_pushPull; example_pins.rxPin=&IfxCan_RXD00B_P20_7_IN; example_pins.rxPinMode=IfxPort_InputMode_noPullDevice;//IfxPort_InputMode_noPullDevice example_pins.padDriver=IfxPort_PadDriver_cmosAutomotiveSpeed2; IfxCan_Can_initModuleConfig(&g_mcmcan.canConfig, &MODULE_CAN0);//MODULE_CAN0 IfxCan_Can_initModule(&g_mcmcan.canModule, &g_mcmcan.canConfig); /* ========================================================================================== * Source CAN node configuration and initialization: * ========================================================================================== * - load default CAN node configuration into configuration structure * * - set source CAN node in the "Loop-Back" mode (no external pins are used) * - assign source CAN node to CAN node 0 * * - define the frame to be the transmitting one * * - once the transmission is completed, raise the interrupt * - define the transmission complete interrupt priority * - assign the interrupt line 0 to the transmission complete interrupt * - transmission complete interrupt service routine should be serviced by the CPU0 * * - initialize the source CAN node with the modified configuration * ========================================================================================== */ IfxCan_Can_initNodeConfig(&g_mcmcan.canNodeConfig, &g_mcmcan.canModule); g_mcmcan.canNodeConfig.busLoopbackEnabled = FALSE;//FALSE g_mcmcan.canNodeConfig.nodeId = IfxCan_NodeId_0; g_mcmcan.canNodeConfig.frame.type = IfxCan_FrameType_transmit; g_mcmcan.canNodeConfig.interruptConfig.transmissionCompletedEnabled = TRUE;//TRUE g_mcmcan.canNodeConfig.interruptConfig.traco.priority = ISR_PRIORITY_CAN_TX; g_mcmcan.canNodeConfig.interruptConfig.traco.interruptLine = IfxCan_InterruptLine_0;//IfxCan_InterruptLine_0 g_mcmcan.canNodeConfig.interruptConfig.traco.typeOfService = IfxSrc_Tos_cpu0;//traco g_mcmcan.canNodeConfig.pins=&example_pins; IfxCan_Can_initNode(&g_mcmcan.canSrcNode, &g_mcmcan.canNodeConfig); /* ========================================================================================== * Destination CAN node configuration and initialization: * ========================================================================================== * - load default CAN node configuration into configuration structure * * - set destination CAN node in the "Loop-Back" mode (no external pins are used) * - assign destination CAN node to CAN node 1 * * - define the frame to be the receiving one * * - once the message is stored in the dedicated RX buffer, raise the interrupt * - define the receive interrupt priority * - assign the interrupt line 1 to the receive interrupt * - receive interrupt service routine should be serviced by the CPU0 * * - initialize the destination CAN node with the modified configuration * ========================================================================================== */ IfxCan_Can_initNodeConfig(&g_mcmcan.canNodeConfig, &g_mcmcan.canModule); g_mcmcan.canNodeConfig.busLoopbackEnabled = FALSE;//FALSE g_mcmcan.canNodeConfig.nodeId = IfxCan_NodeId_1; g_mcmcan.canNodeConfig.frame.type = IfxCan_FrameType_receive; g_mcmcan.canNodeConfig.interruptConfig.messageStoredToDedicatedRxBufferEnabled = TRUE; g_mcmcan.canNodeConfig.interruptConfig.reint.priority = ISR_PRIORITY_CAN_RX; g_mcmcan.canNodeConfig.interruptConfig.reint.interruptLine = IfxCan_InterruptLine_1; g_mcmcan.canNodeConfig.interruptConfig.reint.typeOfService = IfxSrc_Tos_cpu0; IfxCan_Can_initNode(&g_mcmcan.canDstNode, &g_mcmcan.canNodeConfig); /* ========================================================================================== * CAN filter configuration and initialization: * ========================================================================================== * - filter configuration is stored under the filter element number 0 * - store received frame in a dedicated RX Buffer * - define the same message ID as defined for the TX message * - assign the filter to the dedicated RX Buffer (RxBuffer0 in this case) * * - initialize the standard filter with the modified configuration * ========================================================================================== */ g_mcmcan.canFilter.number = 0; g_mcmcan.canFilter.elementConfiguration = IfxCan_FilterElementConfiguration_storeInRxBuffer; g_mcmcan.canFilter.id1 = CAN_MESSAGE_ID; g_mcmcan.canFilter.rxBufferOffset = IfxCan_RxBufferId_0; IfxCan_Can_setStandardFilter(&g_mcmcan.canDstNode, &g_mcmcan.canFilter); } /* Function to initialize both TX and RX messages with the default data values. * After initialization of the messages, the TX message is transmitted. */ void transmitCanMessage(void) { /* Initialization of the RX message with the default configuration */ IfxCan_Can_initMessage(&g_mcmcan.rxMsg); /* Invalidation of the RX message data content */ memset((void *)(&g_mcmcan.rxData[0]), INVALID_RX_DATA_VALUE, MAXIMUM_CAN_DATA_PAYLOAD * sizeof(uint32)); /* Initialization of the TX message with the default configuration */ IfxCan_Can_initMessage(&g_mcmcan.txMsg); /* Define the content of the data to be transmitted */ g_mcmcan.txData[0] = TX_DATA_LOW_WORD; g_mcmcan.txData[1] = TX_DATA_HIGH_WORD; /* Set the message ID that is used during the receive acceptance phase */ g_mcmcan.txMsg.messageId = CAN_MESSAGE_ID; IfxCan_Can_sendMessage(&g_mcmcan.canSrcNode, &g_mcmcan.txMsg, &g_mcmcan.txData[0]); /* Send the CAN message with the previously defined TX message content */ // while( IfxCan_Status_notSentBusy == // IfxCan_Can_sendMessage(&g_mcmcan.canSrcNode, &g_mcmcan.txMsg, &g_mcmcan.txData[0]) ) // { // } } /* Function to initialize the LEDs */ void initLeds(void) { /* ====================================================================== * Configuration of the pins connected to the LEDs: * ====================================================================== * - define the GPIO port * - define the GPIO pin that is connected to the LED * - define the general GPIO pin usage (no alternate function used) * - define the pad driver strength * ====================================================================== */ g_led1.port = &MODULE_P00; g_led1.pinIndex = PIN0; g_led1.mode = IfxPort_OutputIdx_general; g_led1.padDriver = IfxPort_PadDriver_cmosAutomotiveSpeed1; g_led2.port = &MODULE_P00; g_led2.pinIndex = PIN1; g_led2.mode = IfxPort_OutputIdx_general; g_led2.padDriver = IfxPort_PadDriver_cmosAutomotiveSpeed1; /* Initialize the pins connected to LEDs to level "HIGH", which keep the LEDs turned off as default state */ IfxPort_setPinHigh(g_led1.port, g_led1.pinIndex); IfxPort_setPinHigh(g_led2.port, g_led2.pinIndex); /* Set the pin input/output mode for both pins connected to the LEDs */ IfxPort_setPinModeOutput(g_led1.port, g_led1.pinIndex, IfxPort_OutputMode_pushPull, g_led1.mode); IfxPort_setPinModeOutput(g_led2.port, g_led2.pinIndex, IfxPort_OutputMode_pushPull, g_led2.mode); /* Set the pad driver mode for both pins connected to the LEDs */ IfxPort_setPinPadDriver(g_led1.port, g_led1.pinIndex, g_led1.padDriver); IfxPort_setPinPadDriver(g_led2.port, g_led2.pinIndex, g_led2.padDriver); }