C5500 I2C调试问题

目前是不能写，写入出错都是超时，但是第一次写寄存器和后续写寄存器的超时所卡在步骤是不一样的，如提问中那样

CSL_I2C_LoopbackExample_Out正常，打印如下：

I2C LOOPBACK TEST!

I2C Loopback Data Write and Read Complete
Read Write Buffers Match!!

I2C LOOPBACK TEST PASSED!!

没有在GEL文件中设置。请问GEL文件指的具体是哪一个文件，我这边没有看到gel对应后缀的文件

SDA SCL管脚已上拉3.3v

可以运行到CSL_testRegister

以下为我修改的I2C_write函数

CSL_Status I2C_write(Uint16 *i2cWrBuf,
Uint16 dataLength,
Uint16 slaveAddr,
Bool masterMode,
Uint16 startStopFlag,
Uint16 timeout)
{
volatile Uint16 looper;
Uint16 dataCount;
Uint16 statusByte;

if((i2cWrBuf != NULL) && (dataLength !=0))
{
/* check for bus busy */
for(looper = 0; looper < timeout; looper++)
{
statusByte = CSL_FEXT(i2cHandle->i2cRegs->ICSTR, I2C_ICSTR_BB);
if(statusByte == FALSE)
{
printf("bus busy\n");
break;
}
}

if(looper >= timeout)
{
printf("bus busy timeout\n");
/* bus busy timeout error */
return(CSL_I2C_BUS_BUSY_ERR);
}

/* Set the Tx mode */
CSL_FINST(i2cHandle->i2cRegs->ICMDR, I2C_ICMDR_TRX, SET);

/* Set the data length */
CSL_FINS(i2cHandle->i2cRegs->ICCNT, I2C_ICCNT_ICDC, dataLength);

if(masterMode == TRUE)
{
printf("masterMode\n");
/* Set the slave address */
CSL_FINS(i2cHandle->i2cRegs->ICSAR, I2C_ICSAR_SADDR, slaveAddr);

/* Enable Master mode */
CSL_FINST(i2cHandle->i2cRegs->ICMDR, I2C_ICMDR_MST, SET);

/* Set the stop bit */
if((startStopFlag & CSL_I2C_STOP) == CSL_I2C_STOP)
{
printf("set stop bit\n");
CSL_FINST(i2cHandle->i2cRegs->ICMDR, I2C_ICMDR_STP, SET);
}

/* Set the start bit */
if((startStopFlag & CSL_I2C_START) == CSL_I2C_START)
{
printf("set start bit\n");
CSL_FINST(i2cHandle->i2cRegs->ICMDR, I2C_ICMDR_STT, SET);
}
}
else
{
printf("slave mode\n");
/* Disable Master mode */
CSL_FINST(i2cHandle->i2cRegs->ICMDR, I2C_ICMDR_MST, CLEAR);
}

for(dataCount = 0; dataCount < dataLength; dataCount++)
{
/* Check for ICXRDY status */
for(looper = 0; looper < timeout; looper++)
{
statusByte = CSL_FEXT(i2cHandle->i2cRegs->ICSTR,
I2C_ICSTR_ICXRDY);
// statusByte = CSL_FEXT(i2cHandle->i2cRegs->ICSTR,
// I2C_ICSTR_ICRRDY);
if(statusByte == TRUE)
{
break;
}
}

if(looper >= timeout)
{
printf("CSL_I2C_TIMEOUT_ERROR\n");
return(CSL_I2C_TIMEOUT_ERROR);
}

/* Write data to the data Tx register */
CSL_FINS(i2cHandle->i2cRegs->ICDXR, I2C_ICDXR_D, *i2cWrBuf++);

for(looper = 0; looper < timeout; looper++)
{
/* Check for NACK status */
statusByte = CSL_FEXT(i2cHandle->i2cRegs->ICSTR,
I2C_ICSTR_NACK);
if(statusByte == FALSE)
{
break;
}
}

if(looper >= timeout)
{
printf("CSL_I2C_NACK_ERR\n");
return(CSL_I2C_NACK_ERR);
}
}
}
else
{
printf("CSL_ESYS_INVPARAMS\n");
return(CSL_ESYS_INVPARAMS);
}

return(CSL_SOK);
}

第一次可以运行等待data received 超时 后面在bus busy 超时

Log如下

CSL_testRegister

I2C CODEC CONFIGURING IN POLLED MODE TEST!

pscValue:8
clock:57
CSL_testRegister
bus busy
masterMode
set stop bit
set start bit
CSL_I2C_TIMEOUT_ERROR
I2C Write Failed!!
Read Write Buffers Don't Match for Register:0 with Value:0
CSL_testRegister Failed!!

CSL_testRegister
bus busy timeout
I2C Write Failed!!
Read Write Buffers Don't Match for Register:65 with Value:81
CSL_testRegister Failed

当前项目如图所示，我的ccs不安装在C盘下，是否需要别的设置操作

看了一下，使用别的demo有target configuration file，但是目前使用的c55_csl_3.06没有看到对应的ccxml文件

您连仿真器的时候需要新建target configuration file来配置仿真器驱动，如下图

找到I2C无法配置的原因是因为写入字节大小CSL_I2C_DATA_SIZE与codec配置的不一致，前期CSL_I2C_SYS_CLK配置的也不对

目前使用示波器抓取SDA SCL有对应写入数据，但是好像存在大小端问题，例如I2C地址0x94，抓取到的数据为0010 1001，请问这个怎么设置呢？

I2C是先发最高位MSB的，抓取到的数据没问题。
The data is always transferred with the mostsignificant bit (MSB) first. 
www.ti.com/.../spruh87h.pdf