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krimenet
Joined: 16 Oct 2007
Posts: 2
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| pic 16f876a int_rda no work on power up |
 Posted: Tue Oct 16, 2007 5:15 am |
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Please help me i'm new in this topics,
I have a problem:
when i start up the pic for the first time (on power up), the firmware not enable the int_rda, on the contrary if I reset it, int_rda is enable and firmware work right.
I have put in my code printf() instructions to monitorizing data received and I seen data input is 0 on start up, instead if I reset the data input is correct.
Please help me If you have any ideas. |
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ckielstra
Joined: 18 Mar 2004
Posts: 3680
Location: The Netherlands
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| Posted: Tue Oct 16, 2007 5:23 am |
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Have you tried adding the ERRORS directive to your #use rs232 line?
What is your compiler version?
Without example code I can't give more advise. Please post a small program demonstrating your problem, max 20 lines of code. Make sure the example is complete so we can copy/paste it into our compiler, this means including #fuses statements, etc. |
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krimenet
Joined: 16 Oct 2007
Posts: 2
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| Posted: Tue Oct 16, 2007 8:46 am |
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| ckielstra wrote: | Have you tried adding the ERRORS directive to your #use rs232 line?
What is your compiler version?
Without example code I can't give more advise. Please post a small program demonstrating your problem, max 20 lines of code. Make sure the example is complete so we can copy/paste it into our compiler, this means including #fuses statements, etc. |
My compiler version is PCWH ver 3.203
below the code example:
#include <16F876a.h>
#fuses HS,NOWDT,NOPROTECT,NOLVP,PUT
#use delay(clock=20000000)
#use i2c (master,scl=PIN_C3,sda=PIN_C4,slow,force_hw)
#use rs232(baud=38400, xmit=PIN_C6, rcv=PIN_C7, stream=XBEE, ERRORS)
#use rs232(baud=38400, xmit=PIN_B1, rcv=PIN_B0, stream=COM, ERRORS)
#define DS1820_PIN PIN_A0
#define SRF02 0xe0
#define BUF_SIZE 10
typedef struct{
char head; // l'inizio del packet deve essere "@" 0X40 64
char command; //può essere S settaggio A avvio letture L lettura effettuata
char my; //nel caso S invia il my da modificare nel caso L my identifica l'indirizzo di chi trasmette
int16 data_1;
char tail; // la fine del packet deve essere [CR] (\r)
int ok;
}t_Packet;
t_Packet Packet = { 0x40, 0x41, 0x31, 0x32, 0x0D, TRUE }; // dummy initialize
static int I2C_Buffer [16];
int16 Distanza;
long int timer;
char data;
unsigned char t1_200ms=0;
// ============================================================================
// la comunicazione seriale riceve un interrupt handler
// ============================================================================
#int_rda
void Rs232c_Receive(void)
{
if( kbhit() ){
data=fgetc(XBEE);
if (data=='$')
fprintf(COM,"%u",data);
}
}
void main(void)
{
Packet.my=2;
Packet.command='L';
enable_interrupts( INT_RDA );
enable_interrupts( GLOBAL );
while(1)
{
}
}
Thanks for the answer. |
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