如何在这个芯片上读写ICAN？

你看MCC了吗？现在也是示例生成器。



      以下为原文

    Did you look at MCC?  that is now the example generator too.

实际上，我放弃了自己的代码，并使用MPLAB代码配置器的源代码来创建一切。我只添加：void main(void){uCAN_MSG帧；无符号字符d1；//初始化设备SYSTEM_Initialize()；//如果在PIC18高/低优先级模式中使用中断，则需要启用全局高中断和低中断//如果在PIC中范围兼容模式中使用中断，则需要启用全局和外围中断//使用下列宏：//启用高优先级全局中断//INTERRUPT_GlobalInter.HighEnable()；//启用低优先级全局中断。//INTERRUPT_GlobalInter.LowEnable()；//禁用高优先级全局中断//INTERRUPT_GlobalInter.High.ble()；//禁用低优先级全局中断。//INTERRUPT_GlobalInter.Low.ble()；//启用全局中断//INTERRUPT_GlobalInter.Enable()；//启用外围中断//INTERRUPT_.pheralInter.Enable()；//禁用全局中断//INTERRUPT_GlobalInter..ble()；//禁用外围中断//INTERRUPT_.pheralInter..ble()；d1=0；而(1){frame.frame.id=9；frame.frame.idType=0；//添加应用程序代码frame.frame.dlc=1；frame.frame.data0=d1++；CAN_.(&frame)；}}}配置器提供了CAN_.。这里有一个线索——当我进入Chanz传输时，它的第一件事就是：（TXB0CONTITS TXReq！= 1）{事实上，这个比特总是1。这告诉我芯片没有把数据包推到总线上，它继续在缓冲器中徘徊……布莱恩



      以下为原文

    I actually gave up on my own code and used the MPLAB Code Configurator's source code to create everything.  I merely added:
 
void main(void)
{
    uCAN_MSG frame;
    unsigned char d1;
   
    // Initialize the device
    SYSTEM_Initialize();
    // If using interrupts in PIC18 High/Low Priority Mode you need to enable the Global High and Low Interrupts
    // If using interrupts in PIC Mid-Range Compatibility Mode you need to enable the Global and Peripheral Interrupts
    // Use the following macros to:
    // Enable high priority global interrupts
    //INTERRUPT_GlobalInterruptHighEnable();
    // Enable low priority global interrupts.
    //INTERRUPT_GlobalInterruptLowEnable();
    // Disable high priority global interrupts
    //INTERRUPT_GlobalInterruptHighDisable();
    // Disable low priority global interrupts.
    //INTERRUPT_GlobalInterruptLowDisable();
    // Enable the Global Interrupts
    //INTERRUPT_GlobalInterruptEnable();
    // Enable the Peripheral Interrupts
    //INTERRUPT_PeripheralInterruptEnable();
    // Disable the Global Interrupts
    //INTERRUPT_GlobalInterruptDisable();
    // Disable the Peripheral Interrupts
    //INTERRUPT_PeripheralInterruptDisable();
    d1 = 0;
    while (1)
    {
        frame.frame.id = 9;
        frame.frame.idType = 0;        // Add your application code
        frame.frame.dlc = 1;
        frame.frame.data0 = d1++;
        CAN_transmit(&frame);
    }
}
 
The CAN_transmit was provided by the Configurator.   Here's a clue-- when I step into the CAN_transmit, the first thing it is does is:
 
    if (TXB0CONbits.TXREQ != 1) {
 
As it turns out, this bit is always 1.  This tells me the the chip is not pushing the packet to the bus and it continues to linger in the buffer....?
 
Bryan

解决：必须将EnDRHI位设置为1。这样，问题就来了，再见。



      以下为原文

    Solved:  The ENDRHI bit MUST be set to 1.   Did that, problems went bye bye.