KSDK, MQX, PE

[a8Chcx]

Hi,

I am using K64F120 for my project. I generate the probject with MQX and PE using KDS, and works fine.

Now, I am using PE to generate I2C to read the sensor register on board using I2c Pheripheral driver. I have the following problems:

1) If I enable auto initilization for master, I can't get out initilization call...

2) If I do intilization in task and initilization is fine. When I call "I2C_DRV_MasterReceiveDataBlocking...", I can't get out this call...

Could you tell me where I am wrong? HOw to use pheripheral driver to develop my I2C application?

Thanks,

Christie

[soledad]

Hi Christie,

Are you using the MQX driver?? You can find an example at the paths:

C:\Freescale\Freescale_MQX_4_1\mqx\examples\i2c

Please check the attached document, this document explains the IIC driver example, what to expect from the example and a brief introduction to the IIC driver API.

Have a great day,
Sol

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[a8Chcx]

Hi Soledad,

I am using MQX lite, not full MQX package because I want to add as less resource as possible.

I am using lite MQX with PE in KDS... I can use PE to generate GPIO pheripheral driver to drive LEDs on board.

When I generate driver for I2C, I have the problems for auto initialization.

Is it related to ISR for I2C? How can I configure ISR for I2C because there is no this option?

Thanks,

Christie

[soledad]

Please check the below threads:

https://community.freescale.com/thread/327848

https://community.freescale.com/thread/316099

[a8Chcx]

Hi Soledad,

I am using KDS with PE. Then I add MQX, GPIO driver by using PE to create my project.

When I use the peripheral driver to add I2C and use auto initialization, it causes running problem. Then I checked and the problem is created by semaphore created in Master_init function, If I disable it, it is OK.

Then, I am using receiveBlock function to read the accelerometer on board(Add==0x3A) and get failed(==0x02).

1) Why is it failed on initialization?

2) Do you have a sample code how to use peripheral driver function calls to read/write I2C device?

Thanks,

Christie 

[a8Chcx]

Hi Soledad,

I tried one form sample code of KDS(Comunication Demo) using the same function call from KSDK and works fine.

Now only difference is that I am using PE to generate peripheral driver for I2C(fsl_i2c).

1) Auto initilization does not work until I remove OSA_SemaCreate(&master->irqSync, 0) in intilization rountine.

2) If I call I2C_DRV_MasterReceiveDataBlocking(), I got stuck when OSA_SemaCreate is in initilization. The call will get failed(0x02) if I remove OSA_SemaCreate...

Looks like I need to enale OSA_Sema in interrupt. But, this component does not allow me to genrate ISR...

Could you tell me if it is possible reason? And how to fix it?

Thanks,

Christie