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ttrip
Novice
1,325 Views

MCU api - gpio interrupt mode falling AND rising edge ?

Hi

From the doc found at https://software.intel.com/en-us/node/557355 MCU API | Intel® Software :

int gpio_register_interrupt(int gpio, int mode, irq_handler_t isr);

where mode: 0 = falling edge interrupt, 1 = rising edge interrupt

I just wonder if i can make interrupt for both falling and rising edge .

i try to call :

gpio_register_interrupt(my_pin, 0, my_isr);

then

gpio_register_interrupt(my_pin, 1, my_isr);

which give me error when debuggin /dev/ttymcu1;

but when i try :

gpio_register_interrupt(my_pin, 2, my_isr);

no error raised...

just to be sure if there was not some mistake in the api documentation because it seems that mcu_snprintf

is bad documented:

from the doc, we can see that the declaration tell us that there is NO RETURN ( cause the void) and later, 'return value, number of chars ....' , in the 'mcu_api.h' header file this return an interger :

mcu_snprintf

A simplified version of snprintf.

void mcu_snprintf(char *buf, unsigned int size, const char *fmt, ...)

...where:

buf: the buffer point to contain the datasize: size of bufferfmt: format stringreturn value: the number of characters that have been written

thanks

EDIT:

just found this thread

which answer to my first question...

so whats about the doc ?

1 Reply
idata
Community Manager
71 Views

Hi toukytrip,

Thank you for contacting us and letting us know you found the solution to your fiest question. In regards to your second question, I looked at the mcu_snprintf function on the document you posted and at the mcu_api.h file. It appears that both documents say different things, as you pointed out. In https://software.intel.com/en-us/node/557355 https://software.intel.com/en-us/node/557355 , mcu_snprintf is declared as a void and in mcu_api.h, it is declared as an int, as you can see here:

 

 

So, it appears that there's a mismatch in the documentation. We'll report this to the appropriate team so that the document can be modified.

Let us know if there's anything else we can assist you with.

-Sergio

 

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