MCC I2C无法将数据导入MasterWrite功能

我想知道如果我能用PIC18F26K40看到一个问题，我用MCC设置I2C。我所要做的就是在I2C线上发送一条写信息。该消息是0x44，0x01，0x01}，地址为0x44。我创建了一个ArayuIt88t A（3）＝{0x44，0x01，0x01}；然后是CALL2C1YMasMrdScript（A，3，0x44，and Stabs1）；现在在模拟器中，一个数组被正确地发送给函数，并且我可以看到数组是*pDATA，但是在硬件中，数组是N。OT被发送到函数，所以我在I2C线上看到的是0x88（它是正确的，0x44是7位地址加上一个写入位），后面是3个0x00的消息。我无法在模拟器中测试这一点，因为I2C在发送地址后不会中断模拟器。当我检查MestWrrand函数中的数据时，我会切换一个PIN，所以我知道pDATA永远不会设置在硬件中。如果我设置pdata，当我检测到没有收到任何数据，那么第二次围绕引脚切换两次，正确的数据被从I2C线路发送出去。但是，我不能改变我想发送的数据，因为它是在i2c.c文件内部设置的。我使用的是MPLAB X 3.51、XC8 1 1.40PRO和MCC 3.26.2。



      以下为原文

    I was wondering if I could get some help on a problem I’m seeing with a PIC18F26k40 while I’m setting up the I2C using MCC. All I want to do is send a write message on the I2C line. The message is {0x44, 0x01, 0x01} with the address of 0x44.
I created an array
uint8_t a[3] = {0x44, 0x01, 0x01};
then call
I2C1_MasterWrite(a, 3, 0x44, &status1);

Now in the simulator the a array gets sent correctly to the function and I can see the array as *pdata, but in hardware the array does not get sent to the function, so what I see on the I2C line is 0x88 (which is correct as 0x44 is the 7 bit address with a write bit added in) followed by 3 messages of 0x00. I can’t test this in the simulator as the I2C never interrupts the simulator after the address is sent. I toggle a pin when I check the data in the MasterWrite function so I know that pData is never set in hardware. If I set pdata when I detect nothing is received then the second time around the pin toggles twice and the correct data gets sent out of the I2C line. However, I cannot change the data I want to send as it is set internally to the i2c.c file it seems.

uint8_t Start[3] = {0x44, 0x01, 0x01};
void main(void)
{
    SYSTEM_Initialize();
    uint8_t Address = 0x44;
    I2C1_MESSAGE_STATUS status1 = I2C1_MESSAGE_PENDING;
    waitForDevice();
    while (1)
    {
        wait150ms();
        I2C1_MasterWrite(Start, 3, Address, &status1);
        while(status1 == I2C1_MESSAGE_PENDING);
    }
}
void I2C1_MasterWrite(uint8_t *pdata,uint8_t length,uint16_t address,I2C1_MESSAGE_STATUS *pflag)
{
    static I2C1_TRANSACTION_REQUEST_BLOCK trBlock;
    // check if there is space in the queue
    if (i2c1_object.trStatus.s.full != true)
    {
        if (*pdata == 0x44)
        {
            LED1_Toggle();
            LED1_Toggle();
        }
        else if (*pdata == 0)
        {
            LED1_Toggle();
            *pdata = 0x44;
            pdata++;
            *pdata = 0x01;
            pdata++;
            *pdata = 0x01;
            pdata--;
            pdata--;
        }
        I2C1_MasterWriteTRBBuild(&trBlock, pdata, length, address);
        I2C1_MasterTRBInsert(1, &trBlock, pflag);
    }
    else
    {
        *pflag = I2C1_MESSAGE_FAIL;
    }
}
I’m using MPLAB X 3.51, XC8 1.40 PRO, and MCC 3.26.2