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Juls
Guest
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| Uart problem |
 Posted: Fri Nov 07, 2008 2:30 pm |
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I got no idea but my tx pin is going high at reset and wont do anything
| Code: | /*
Fichier:Encoder.c
Date: 7 FEV 2008
Auteur: Julien Gingras
Revision: 1.0
Compilation:
Compilateur: CCS
Version: 3.5.0.92
Librairies:
*/
/* ***** LISTE DES INCLUDES ***** */
#include "Flex_LCD420.c" //LCD driver
#use delay(clock=4000000) // Fixer la vitesse de l'horloge
#CASE // Met le compilateur CASE SENSITIVE
// Permet d'utiliser delay_ms() et delay_us()
#FUSES HS, NOPROTECT, NOBROWNOUT, NOWDT, NOPUT, NODEBUG, NOLVP, NOWRTD, NOFCMEN, NOCPB,
#use rs232(BAUD=38400, PARITY=N, BITS=8, STOP=2)
#use fast_io(A)
#use fast_io(B)
#use fast_io(C)
/* **** LISTE DES CONSTANTES ***** */
#define NEC_INPUT PIN_A2
//we can t use B6 and B7 because they are use by ICD2
/* **** LISTE DES VARIABLES GLOBALES ***** */
int1 nReady = 0;
int szAnswer[150];
int nPos = 0;
/* ***** LISTE DES PROTOTYPES ***** */
void main(void);
void InitPic(void);
void interrupt_RDA();
void interrupt_timer1();
void CheckRom(char *szTx, int nNum);
/* ***** PROGRAMME PRINCPAL ***** */
void main(void)
{
int k, j = 0;
unsigned int16 i = 0;
int nCurrent;
unsigned int8 nAdr;
unsigned int8 nCom;
int1 szNEC[40];
int szMesh[30];
int nSeq = 1;
setup_oscillator(OSC_4MHZ);
InitPic();
lcd_init();
lcd_gotoxy(1,1);
//Test la radio mesh
szMesh[0] = 0xA5; //Sync
szMesh[1] = 2; //Lengh
szMesh[2] = 0xb; //Type Get REV
szMesh[3] = nSeq; //Seq
szMesh[4] = 0; //CheckSum
CheckRom(szMesh, 4);
nSeq ++;
delay_ms(1000);
//get rev de la radio mesh
for(k=0;k<5;k++)
putc(szMesh[k]);
printf(lcd_putc, "%s", "Alex y rock\nen sale");
while(!nReady)
delay_us(100);
nReady = 0;
printf(lcd_putc, "%02X %02X %02X %02X %02X", szAnswer[0],szAnswer[1],szAnswer[2],szAnswer[3],szAnswer[4]);
szAnswer[11] = 0;
// printf(lcd_putc, "%s", &szAnswer[5]);
while(TRUE) //Main Loop
{ do
{
//Looping here we can check if we received something on the rs232 (an event)
if(nReady)
{
switch(szAnswer[2])
{
case 4:
lcd_gotoxy(1,2);
printf(lcd_putc, "DATA IN %02X %02X", szAnswer[1], szAnswer[29]);
break;
}
nReady = 0;
}
//Check the state of the remote input
nCurrent = input_state(NEC_INPUT);
}while(nCurrent);//Loop that wait a input
i = get_timer0()*2;
set_timer0(0); //Reset the timer
if((i>1100)&&(i<1300))
{
szNEC[j] = 0;
j++;
}
else if((i>2200)&&(i<2600))
{
szNEC[j] = 1;
j++;
}
else if((i<15000)&&(i>13000))
{
j = 0;
}
while(!input_state(NEC_INPUT));
if(j == 32)
{
nAdr = 0;
nCom = 0;
memcpy(&nAdr, szNEC, 1);
for(k=0;k<8;k++)
{
szNEC[k] = szNEC[16+k];
}
memcpy(&nCom, szNEC, 1);
lcd_gotoxy(1,3);
printf(lcd_putc, "Adresse = %02X", nAdr);
lcd_gotoxy(1,4);
printf(lcd_putc, "Commande = %02X", nCom);
/*We also tell the mesh radio to send this to the other one (1 = pc)*/
szMesh[0] = 0xA5; //Sync
szMesh[1] = 0x0E; //Lengh
szMesh[2] = 0x11; //Type ML_TRANSMIT
szMesh[3] = nSeq; //Seq
//Parameters
szMesh[4] = 0x01; //Long Adress mode
szMesh[5] = 0x00; //Mesh radio mac 1 is the PC
szMesh[6] = 0x14;
szMesh[7] = 0x77;
szMesh[8] = 0x00;
szMesh[9] = 0x00;
szMesh[10] = 0x00;
szMesh[11] = 0x00;
szMesh[12] = 0x03;
szMesh[13] = 0x4; //Two byte to send
/*szMesh[14] = nAdr&0xff;
szMesh[15] = nCom&0xff;
*/
szMesh[14] = 0x59;
szMesh[15] = 0x1e;
szMesh[16] = 0; //CheckSum
CheckRom(szMesh, 16);
nSeq ++;
// for(k=0;k<17;k++)
// putc(szMesh[k]);
/* szMesh[0] = 0xA5; //Sync
szMesh[1] = 2; //Lengh
szMesh[2] = 0xb; //Type Get REV
szMesh[3] = nSeq; //Seq
szMesh[4] = 0; //CheckSum
for(k=0;k<4;k++)
szMesh[4] += szMesh[k];
szMesh[4] ^= 0xFF;
szMesh[4]++;
nSeq ++;
for(k=0;k<5;k++)
putc(szMesh[k]);*/
/*
while(!nReady)
delay_us(100);
nReady = 0;
lcd_gotoxy(1,2);
if(szAnswer[2] == 3) //If PENDING
{
printf(lcd_putc, "PEND ");
while(!nReady)
delay_us(100);
nReady = 0;
if(szAnswer[2] == 0) //If Sucess
{
printf(lcd_putc, "Sucess");
}
}
else
printf(lcd_putc, "Error %x", szAnswer[3]);
*/
j = 0;
}
}
}
/**********************************************************************************
Set port direction
We set a timer for the remote decoding
***********************************************************************************/
void InitPic(void)
{
setup_adc(ADC_OFF);
set_tris_a(0x04);//A2 as input
set_tris_c(0x80);//Rx(C7) as input
output_high(PIN_A1);
delay_ms(5);
//Set timer 0 in 16 bit to count the uS between input
setup_timer_0(RTCC_INTERNAL|RTCC_DIV_4); //1 at timer value mean 2uS
set_timer0(0);
//Set timer 1 to make the led flash
setup_timer_1(T1_INTERNAL|T1_DIV_BY_8);
set_timer1(15536);
enable_interrupts(GLOBAL);
enable_interrupts(INT_TIMER1);
//Empty the rx buffer (how could data be in)
while(kbhit())
getc();
//Interrupt in RX for RS232
nPos = 0;
enable_interrupts(INT_RDA);
}
/*
Interrupt when something is received by rs232
*/
#INT_RDA
void interrupt_RDA()
{
unsigned char nChar;
do
{
nChar = getc();
if((nChar == 0xA5)&&(nPos == 1))
{
nPos = 0;
}
szAnswer[nPos] = nChar;
if(nPos >= 1)
{
if (nPos == szAnswer[1]+2)
{
nReady++;
nPos = 0;
}
}
nPos++;
}while(kbhit());
clear_interrupt(INT_RDA);
}
/*
Interrupt of timer 1
We toogle the led and reset it
*/
#INT_TIMER1
void interrupt_timer1()
{
output_toggle(PIN_A4);
set_timer1(15536);
clear_interrupt(INT_TIMER1);
}
/*
Calculate the checksum for mesh radio
*/
void CheckRom(char *szTx, int nNum)
{
int i;
szTx[nNum] = 0;
for(i=0;i<nNum;i++)
szTx[nNum] += szTx[i];
szTx[nNum] ^= 0xFF;
szTx[nNum]++;
}
|
I know it pass by the putc function since my lcd show the message
so why its not transmitting anything? |
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PCM programmer
Joined: 06 Sep 2003
Posts: 21708
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| Posted: Fri Nov 07, 2008 2:45 pm |
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Make a small test program that works. Then add in portions of your
code until it fails. Then you will know the section of code that is causing
the problem. |
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Juls
Guest
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| Posted: Fri Nov 07, 2008 7:20 pm |
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I will try this probably monday
so you are telling me that the uart part is ok? |
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PCM programmer
Joined: 06 Sep 2003
Posts: 21708
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| Posted: Fri Nov 07, 2008 9:14 pm |
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No. I'm saying that you need to prove that the UART works OK
in a small test program. Then start adding in the other parts of
your code. |
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Juls
Guest
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| Posted: Wed Nov 12, 2008 3:38 pm |
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do work now
in the use
I never said UART1
.... |
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