rs485 help

[hadeelqasaimeh]

hi all;

i try to communicate using rs485 .

[PCM programmer]

The #int_rda function is already in the RS485.C driver file.
You don't need to add it.

Here is the location of the file:
c:\program files\picc\drivers\rs485.c

[hadeelqasaimeh]

thank you PCM programmer
this is my test code [/code]
#include <16f877.h>
#include <string.h>
#fuses HS,NOWDT,NOLVP
#use delay(clock=20000000) //one instruction=1us
#use rs232(baud=9600, xmit=PIN_C6, rcv=PIN_C7,stream=pc)
/*
PIN_C7 // Data receive pin
PIN_C6 // Data transmit pin
PIN_B4 // Controls DE pin. RX low, TX high.
PIN_B5 // Controls RE pin. Should keep low.
*/
#define RS485_RX_BUFFER_SIZE 40
#define RS485_USE_EXT_INT FALSE
#define RS485_ID 0x01
#include "RS485.c"
#include "lcd_kbd1.c"
#define bkbhit (next_in != next_out)


int8 i, msg[RS485_RX_BUFFER_SIZE];
int8 next_in = 0;
int8 next_out = 0;


void main()

{


enable_interrupts(INT_RDA);
enable_interrupts(GLOBAL);

rs485_init();
LCD_Init ( );

while(TRUE)
{

// Purpose: Get a message from the RS485 bus and store it in a buffer
// Inputs: 1) A pointer to a buffer to store a message
// 2) TRUE - wait for a message
// FALSE - only check if a message is available
// Outputs: TRUE if a message was received
// FALSE if wait is FALSE and no message is available
// Note: Data will be filled in at the pointer as follows:
// FROM_ID DATALENGTH DATA...

if(rs485_get_message(* msg, TRUE))
{

LCD_PutCmd ( CLEAR_DISP );
LCD_SetPosition ( LINE_16_1);
printf(LCD_PutChar," MSG IS:");
LCD_SetPosition (LINE_16_2);
printf(LCD_PutChar,"%s",msg );
delay_ms(1000);
}//if

}//while
}//MAIN

[hadeelqasaimeh]

sorry,this is my message agian:


thank you PCM programmer
this is my test code

[hadeelqasaimeh]

no one can help??!!plz