I2C and other drivers in HWI ISR??

Bahubali%25252525252520Bill

Hey, Is it possible to use I2C, SPI and other drivers in HWI ISR? In my project, i am calling I2C transfer function in HWI ISR, but getting error as "I2C Bus fault". Tried to look into the I2C_transfer() function, but could not able to resolve the error.

over 10 years ago

0 Karl Wechsler over 10 years ago

TI__Mastermind 20805 points

No. Most of the driver APIs must be called from task context. Can you change your ISR to post a semaphore that a task is waiting on? Then then have the task do the I2C operation?

0 Bahubali%25252525252520Bill over 10 years ago in reply to Karl Wechsler

Intellectual 385 points

ohh thank you..did the same..its working.

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I2C and other drivers in HWI ISR??