AN1105 datasheet(36/100 Pages) STMICROELECTRONICS

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ST7 pCAN PERIPHERAL DRIVER

ADC_Init();

//Initializes the ADC

if ((CAN_First_Init())==CAN_INIT_FAILURE) //Initializes the CAN peripheral

{

return;

}

TIMA_Init();//Initializes the timer

_asm(“RIM”);// EnableInterrupts;

-------------------

/*----------------------------

LOOP

--------------------------*/

while (1) /*

-------------------

{

}

Finished! Now compile the entire code and run the software. Once the

while {1} loop is en-

tered, the microcontroller will run non-stop until it is shut down, reacting to every event, saving

data in our buffer, sending data periodically and answering remote requests.

If you own a CAN bus simulation tool, you can monitor messages being received and sent by

the ST7.

The next section of this application note will explain in detail the driver architecture and all soft-

ware functions (including internal functions).

2.2.5 IMPORTANT: Reentrant Functions

If the memory model you chose for compiling your application does not use the physical stack

but simulates it in RAM, you CANNOT allow functions to be reentrant.

The COSMIC compiler will generate an error if it finds some code that could be reentrant. For

example, this may occur if you use a subroutine inside both an initialization function and an in-

terrupt routine.

This is, of course, not a real error, but the compiler does not know this and prevents you from

going further.

To fix this problem with the COSMIC compiler, use the following trick:

– Change the name of the function in your code, in the call that makes the error appear.

AN1105 Datasheet(PDF) 36 Page - STMicroelectronics