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t90
Joined: 07 Aug 2008
Posts: 11
Location: saigon,vietnam
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| CAN and RS485 don't work in one file |
 Posted: Wed Dec 31, 2008 6:03 am |
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I have a problem with CAN bus and RS485. When CAN bus in single file it work well, RS485 work also. But when I implement those in same file they don't work. Please help me!
Here is my code.
| Code: | #include <18f4680.h>
#fuses HS, NOWDT, NOLVP, NOBROWNOUT, NOPROTECT, PUT
#use delay(clock=20000000)
#use rs232(baud=9600, xmit=PIN_C6, rcv=PIN_C7, stream=PC)
#define RS485_RX_BUFFER_SIZE 64
#define RS485_USE_EXT_INT FALSE
int8 OUR_RS485_ID = 0;
#define RS485_ID OUR_RS485_ID
#include <rs485.c>
#include <stdlib.h>
#include "my_can.c"
int1 flag;
int flag1;
int flag2;
int16 count;
int cmp[4];
int8 msg[8];
int i;
void delay_seconds(int n) {
for (;n!=0; n--)
delay_ms( 1000 );
}
void main()
{
cmp[0]=0;
cmp[1]=1;
cmp[2]=2;
cmp[3]=3;
set_tris_b(0x00);
set_tris_c(0x00);
flag=0;
flag1=0;
flag2=0;
count=0;
setup_timer_0(RTCC_INTERNAL|RTCC_DIV_4); // rs485 ko chay
enable_interrupts(int_timer0);
enable_interrupts(GLOBAL);
my_can_init();
my_can_set_id(111);
rs485_init();
while(1){
if(rs485_get_message(msg, TRUE))
{
/*printf("\n\r%d: ", msg[0]);
for(i=0; i < msg[1]; ++i)
putc(msg[i+2]);
printf("\n\r");*/
flag1=4;
}
//restart_wdt();
if ( can_kbhit() ) //if data is waiting in buffer...
{
if(can_getd(rx_id, &in_data[0], rx_len, rxstat)) { //...then get data from buffer
if(rx_len<=MY_CAN_BUFFER_SIZE){
if(rx_id==my_can_id){
if(memcmp(in_data,cmp,4)==0)
flag2=4;
//output_toggle(PIN_B4);
output_bit(PIN_B5,in_data[0]);
output_bit(PIN_B4,in_data[1]);
}
else{
printf("\r\n ID=%Lu Data not for me !\r\n",rx_id);
}
}
else{
printf("\r\nFAIL on rx_len\r\n");
}
}
else {
printf("\r\nFAIL on GETD\r\n");
}
}
//out put to check for receive data
if(flag1==4){
output_bit(PIN_D0,1);
delay_seconds(3);
output_bit(PIN_D0,0);
flag1=0;
}if(flag2==4){
output_bit(PIN_D0,1);
delay_seconds(1);
output_bit(PIN_D0,0);
flag2=0;
}
}
} |
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PCM programmer
Joined: 06 Sep 2003
Posts: 21708
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| Posted: Wed Dec 31, 2008 12:09 pm |
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| Quote: |
setup_timer_0(RTCC_INTERNAL|RTCC_DIV_4); // rs485 ko chay
enable_interrupts(int_timer0);
enable_interrupts(GLOBAL); |
You have enabled Timer0 interrupts, but you don't have an #int_timer0
interrupt service routine. |
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t90
Joined: 07 Aug 2008
Posts: 11
Location: saigon,vietnam
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| Posted: Wed Dec 31, 2008 7:31 pm |
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I use #int_timer0 to handle the data receiving from RS485. But it don't
work, so that I delete #int_timer0 but I forget to delete setup_timer0.
Now I delete setup_timer0 but it still don't work. Please help me |
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PCM programmer
Joined: 06 Sep 2003
Posts: 21708
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| Posted: Wed Dec 31, 2008 7:52 pm |
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| Quote: | | Now I delete setup_timer0 but it still don't work. |
Delete these two lines:
| Quote: | enable_interrupts(int_timer0);
enable_interrupts(GLOBAL); |
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t90
Joined: 07 Aug 2008
Posts: 11
Location: saigon,vietnam
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| Posted: Wed Dec 31, 2008 8:23 pm |
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| I delete it, but it don't work. |
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