CodeWarrior Development ToolsのトピックRe: I2C write register stuck at i2c_Wait() K60N512

I2C write register stuck at i2c_Wait() K60N512

neagoeiulia — Thu, 07 May 2015 16:18:16 GMT

Hello!

I try to use the I2C module to configure a CMOS sensor from a Kinetis K60N512 in an application but it gets stuck after the instruction I2C0_D = u8RegisterAddress; at i2c_Wait();.

It worked a few times, but now it's stopped. Here is my code:

void OV7675WriteRegister(unsigned char u8RegisterAddress, unsigned char u8Data)

{

// send data to slave

IIC_StartTransmission(SlaveID,MWSR);

i2c_Wait();

I2C0_D = u8RegisterAddress;

i2c_Wait(); // here is the problem i don't understand

I2C0_D = u8Data;

i2c_Wait();

i2c_Stop();

Pause();

}

Can anyone tell me what is wrong?

Thanks

Iulia

Re: I2C write register stuck at i2c_Wait() K60N512

Alice_Yang — Thu, 14 May 2015 05:02:29 GMT

Hi lulia,

Please checked whether the flag of I2C0_S -> IICIF set ?

If no , i think the basic configuration of I2C transmit have some error, please check .

You can refer to some I2C demo code , for example "KINETIS512_V2_SC"

（K60_100 |Kinetis K60 100 MHz MCUs|Freescale ） in the IAR demo , there is a "i2c_demo" .

Alice

Re: I2C write register stuck at i2c_Wait() K60N512

albertolubeiro — Wed, 29 Jul 2015 13:06:49 GMT

Hi Alice,

I am using KDS3.0 and KDSK v1.2.0 with PEX and im having the same issue.

In my case, the code get stuck in the following line.

/* Wait for the transfer to finish.*/

I2C_DRV_MasterWait(instance, timeout_ms);

Inside this function there is the following code:

{

syncStatus = OSA_SemaWait(&master->irqSync, timeout_ms);

}while(syncStatus == kStatus_OSA_Idle);

I use the non-blocking function I2C_DRV_MasterSendDat, so it should get out of here because of a time out

Any idea?

I am really concerned. it is pretty urgent issue

Thanks and best regards