AN1105 datasheet(35/100 Pages) STMICROELECTRONICS

35 / 100 page

35/100

ST7 pCAN PERIPHERAL DRIVER

CAN_Transmit_Request(&periodic_transmission);

}

//We have given a transmission order here, that will be called on every

//timer IT if the message is not already in the transmission queue.

//The data is filled each time with the value of the A/D converter data

//register. For info. about the ADC, please see the datasheet.

}

IMPORTANT: Please note that WHEN USED OUTSIDE AN INTERRUPT ROUTINE, AND

ONLY THEN, the transmission request MUST NOT BE INTERRUPTED. So, disable all ITs

before a function call (SIM) and re-enable them afterwards (RIM) in the last step of the main.c

file.

In the adc.c file, enter also the following code:

In the ADC_Init routine:

ADCCSR=0x20;//Starts the ADC peripheral

and write a function:

u8 ADC_Get(u8 channel)

{

ADCCSR |= channel;

return ADCDR;

}

Our application is almost entirely written now. Our last step is to fill the main.c file, to allow the

entire program to run.

At the beginning of the file add:

#include “lib.h“

#include “adc.h“

#include “tima.h“

#include “can.h“

#include “can_custom.h”

Then complete the main function as follows:

void main(void)

{

_asm(“SIM”); //Disable interrupts

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

/*------------------- I N I T I A L I S A T I O N -------------------------*/

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

AN1105 데이터시트(PDF) 35 Page - STMicroelectronics