CAN communication header

[priya ravichander]

i have an example code for CAN communication using pic18f4580 but i am in need of the header for can in that program.
please help me, the program is in c18 compiler formet

 

[ChansAlive]

Are you using MPLAB?

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I think in your controller, ECAN is present and the code shown is mainly requiring the header file <ecan.h> present in the installed directory of the complier.

 

[priya ravichander]

yes i am using MPLAB, i also tried with this header but i didn't get it.

 

[jayanth.devarayanadurga]

Why don't you post your code or mention the name of the header file? Do you want scUZd8uqwoie.h file?

 

[ChansAlive]

Hi Priya,
Did you try seaching in the installed library of the compiler. Sometimes the corresponding file may be archived.
change the extension of the file to .h and copy it in the project folder. Try to use the file... But it is better to use the file which may be present in the directory..

 

[priya ravichander]

here with this i will give the code.
Is the header file your given is for C18 compiler

#include <p18f4580.h>
#include <stdlib.h>
#include<ecan.h>
void main()
{
unsigned char temperature, data[8];
unsigned short init_flag, send_flag, dt, len, read_flag;
char SJW, BRP, Phase_Seg1, Phase_Seg2, Prop_Seg, txt[4];
unsigned int temp;
unsigned long mV;
long id, mask;
TRISA = 0xFF; // PORTA are inputs
TRISB = 0x08; // RB2 is output, RB3 is input
//
// Configure A/D converter
//
ADCON1 = 0x80;
//
// CAN BUS Timing Parameters
//
SJW = 1;
BRP = 1;
Phase_Seg1 = 6;
Phase_Seg2 = 7;
BRP = 1;
Prop_Seg = 6;
init_flag = CAN_CONFIG_SAMPLE_THRICE &
CAN_CONFIG_PHSEG2_PRG_ON &
CAN_CONFIG_STD_MSG &
CAN_CONFIG_DBL_BUFFER_ON &
CAN_CONFIG_VALID_XTD_MSG &
CAN_CONFIG_LINE_FILTER_OFF;
send_flag = CAN_TX_PRIORITY_0 &
CAN_TX_XTD_FRAME &
CAN_TX_NO_RTR_FRAME;
read_flag = 0;
//
// Initialise CAN module
//
CANInitialize(SJW, BRP, Phase_Seg1, Phase_Seg2, Prop_Seg, init_flag);
//
// Set CAN CONFIG mode
//
CANSetOperationMode(CAN_MODE_CONFIG, 0xFF);
mask = -1;
//
// Set all MASK1 bits to 1's
//
CANSetMask(CAN_MASK_B1, mask, CAN_CONFIG_XTD_MSG);
//
// Set all MASK2 bits to 1's
//
CANSetMask(CAN_MASK_B2, mask, CAN_CONFIG_XTD_MSG);
//
// Set id of filter B1_F1 to 3
//
CANSetFilter(CAN_FILTER_B2_F3,500,CAN_CONFIG_XTD_MSG);
//
// Set CAN module to NORMAL mode
//
CANSetOperationMode(CAN_MODE_NORMAL, 0xFF);
//
// Program loop. Read the temperature from analog temperature
// sensor
//
for(; // Endless loop
{
//
// Wait until a request is received
//
dt = 0;
while(!dt) dt = CANRead(&id, data, &len, &read_flag);
if(id == 500 && data[0] == 'T')
{
//
// Now read the temperature
//
temp = Adc_Read(0); // Read temp
mV = (unsigned long)temp * 5000 / 1024; // in mV
temperature = mV/10; // in degrees C
//
// send the temperature to Nodeisplay
//
data[0] = temperature;
id = 3; // Identifier
CANWrite(id, data, 1, send_flag); // send temperature
}
}
}

 

[jayanth.devarayanadurga]

It is mikroC CAN Code.

https://www.microchip.com/forums/m706906-print.aspx

https://www.mikroe.com/download/eng/documents/compilers/mikroc/pro/pic/help/can_library.htm

**broken link removed**

mikroE doesn't provide codes for their libraries but you can use mikroC PRO PIC Compiler and use their CAN library. For example refer Advanced Microcontroller Projects in C by Dogan Ibrahim. It has a mikroC based CAN example.

 

[priya ravichander]

The example is from the same book but i cant identify in which compiler they have written this code.