TDA4VM: DA4VM: How to use Main domain I2c in Mcu domain

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Hi

Have you taken a look at the I2C eeprom read example within the RTOS PDK? You can find it at <PDK_PATH>/packages/ti/drv/i2c/test/eeprom_read/src/main_test.c

I believe you have the main steps other than enabling interrupt and selecting the intNum. Ensure to call Board_init() as done in the example to set up pinmux, clocking, and UART stdio.

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zh ti：

Hi，I write code based on the sample.

     The currently used TDA4 j721E.  We used WKUP_I2C0, MCU_I2C0, and Main_I2C2 in Mcu1_0. Using the same code method in mcu1_0, both WKUP_I2C0 and MCU_I2C0 can successfully communicate with external devices. Main_i2C2 and peripheral communication failed.

      The following is the code for operating main_i2c2 in mcu1_0. Please help check if there is any problem.

#define CSL_I2C2_CFG_BASE            (0x2020000UL)

#define I2C2_INSTANCE           3

#define CSLR_R5FSS0_INTROUTER0_IN_I2C2_POINTRPEND_0   (183U)

I2C_Params Commoni2cParams;

static void setConfigI2C(uint8_t instance, uint32_t baseAddr){    I2C_HwAttrs i2cCfg;

    I2C_socGetInitCfg(instance, &i2cCfg);    i2cCfg.baseAddr = baseAddr;    i2cCfg.enableIntr = 0U;    if(I2C2_INSTANCE == instance)    {        i2cCfg.intNum = CSLR_R5FSS0_INTROUTER0_IN_I2C2_POINTRPEND_0;    }    I2C_socSetInitCfg(instance, &i2cCfg);}

void All_I2C_Init_Process(){    Board_initCfg boardCfg;    boardCfg = BOARD_INIT_PINMUX_CONFIG | BOARD_INIT_MODULE_CLOCK | BOARD_INIT_UART_STDIO | BOARD_INIT_UNLOCK_MMR;    (void)Board_init(boardCfg);

    I2C_init();    setConfigI2C(I2C2_INSTANCE,CSL_I2C2_CFG_BASE);

    I2C_Params_init(&Commoni2cParams);

    Commoni2cParams.transferMode = I2C_MODE_BLOCKING;    Commoni2cParams.bitRate = I2C_400kHz;    Commoni2cParams.transferCallbackFxn = NULL;}

void I2c_Transmit_Test(uint32_t slaveAddr,uint8_t *writeData, uint32_t numWriteBytes,uint8_t *readData, uint32_t numReadBytes){    uint8_t retval = 0;    int8_t status = 0U;    I2C_Transaction i2cTransaction;    I2C_Handle i2cHandle = NULL;

    i2cHandle = I2C_open(I2C2_INSTANCE, &Commoni2cParams);

    if(NULL == i2cHandle)    {        retval = 1;    }    else    {        I2C_transactionInit(&i2cTransaction);        i2cTransaction.slaveAddress = slaveAddr;        i2cTransaction.writeBuf = (uint8_t *)&writeData[0];        i2cTransaction.writeCount = numWriteBytes;        i2cTransaction.readBuf = (uint8_t *)&readData[0];        i2cTransaction.readCount = numReadBytes;        status = I2C_transfer(i2cHandle, &i2cTransaction);

      if(I2C_STS_SUCCESS != status)      {         retval = 2;      }

      I2C_close(i2cHandle); }

The order of function calls is All_I2C_Init_Process()，I2c_Transmit_Test(xx).

when call function I2C_transfer,Discovered function I2C_v1_waitForPin()entering a dead loop. Reg I2C_IRQSTATUS_RAW value is 0.   

function I2C_v1_waitForPin()：

status = I2CMasterIntRawStatus(hwAttrs->baseAddr); while ((uint32_t) 0U == (status & flag)) {

}

In summary, please help confirm whether the Main domain I2c can be used in mcu1_0. If can use，please help to investigate the reasons why it is not working well.

Thank you

,

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Hi,

Can you confirm if you would like to configure I2C with interrupts or polling? I see you have selected the correct intNum on the R5 INTRTR, however, you are disabling the enableIntr in the I2C cfg.

Is this a TI EVM or custom board? Can you confirm you have the correct device address and register address you would like to read?

Thanks,

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zh ti：

Hi

    Thank you for your help. The problem The problem has been resolved.Pin mux configuration issue.Refer to the demo for normal functionality.

    Thanks