MSP430F5239: I2C Interrupt missed in MSP430 when FreeRTOS used

RAJA BALAJI KARTHIKEYAN57

Part Number: MSP430F5239
Other Parts Discussed in Thread: MSP430F5529

I have a CCS project where I use MSP430F5239 as a I2C Master. The communication with slave was tested to be successful.

I introduced FreeRTOS to my Application. (I2C ISR + a new task that handles data to/from I2C)

Any I2C transaction that happens before the start of scheduler works fine. But the transactions done inside the task keeps failing. I guess this has to do with missing I2C Interrupts.

Is there any change that I have to do in "Port files" of FreeRTOS ?

I was want to know if anyone have already been successful in implementing something similar and also is there any TI example code for the same?

over 7 years ago

0 James Evans over 7 years ago

TI__Mastermind 49692 points

Hello,

Unfortunately, FreeRTOS is not a TI product. I would recommend posting your FreeRTOS-related questions in their support forum linked below.

For TI-RTOS I2C examples, we have three for the MSP430F5529 that may or not be helpful for you.

TI-RTOS 2.20 for MSP43x

Regards,

James

MSP Customer Applications

0 RAJA BALAJI KARTHIKEYAN57 over 7 years ago in reply to James Evans

Prodigy 140 points

Thanks for your suggestion James. I will post my question in Free-RTOS Form as well.

But, this is for an internal TI project and I was hoping that I would get better suggestion from experts within TI, as the problem might be related to MSP430 porting of FreeRTOS.

Thanks,

Raja

0 James Evans over 7 years ago in reply to RAJA BALAJI KARTHIKEYAN57

TI__Mastermind 49692 points

Take a look at the SimpleLink MSP432 I2C examples using FreeRTOS with TI Drivers.

Regards,

James

MSP Customer Applications

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MSP430F5239: I2C Interrupt missed in MSP430 when FreeRTOS used