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koray_duran
Joined: 04 Feb 2010
Posts: 37
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| EM4150 reading problem |
 Posted: Thu Dec 23, 2010 4:03 am |
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Hello again,
I have a problem about reading my 4150 tag which I supplied from ccs c rfid development kit. I've some changed the code for my own hardware but the drivers and basic hardware not modified.
I can read 4102 tags, I can login to 4150 and I can write to 4150 (not tested) but I can't read 4150.
The problem I get is : PARITY ERROR
Please give me some idea. Here is my code :
| Code: |
#include <16F876A.h>
#fuses HS,NOWDT,NOPROTECT,NOLVP,NOBROWNOUT,NOPUT
#use delay(clock=20M)
#use rs232(baud=2400,parity=N,xmit=PIN_C6,rcv=PIN_C7,bits=8,stream=RS)
#define BUZZER PIN_C4
#define RS485_EN1 PIN_B4
#define RS485_EN2 PIN_B5
#define SENSE INPUT(PIN_C3)
#include <em4095.c>
#include <em4102.c>
#include <em4150.c>
#include <stdlib.h>
int8 msg[32];
int8 code[5];
int8 rcv_data=0;
int8 err;
typedef enum {OFF, GREEN, RED, BLUE, YELLOW, WHITE} LEDcolor;
// LED Control
void led_control(LEDcolor color) {
switch(color) {
case OFF:
output_low(PIN_A1);
output_low(PIN_A0);
output_low(PIN_A2);
break;
case GREEN:
output_low(PIN_A1);
output_low(PIN_A0);
output_high(PIN_A2);
break;
case RED:
output_high(PIN_A1);
output_low(PIN_A0);
output_low(PIN_A2);
break;
case BLUE:
output_low(PIN_A1);
output_high(PIN_A0);
output_low(PIN_A2);
break;
case YELLOW:
output_high(PIN_A1);
output_low(PIN_A0);
output_high(PIN_A2);
break;
case WHITE:
output_high(PIN_A1);
output_high(PIN_A0);
output_high(PIN_A2);
break;
}
}
void rs_init(int8 way) {
if(way==0) {
output_low(RS485_EN1);
output_low(RS485_EN2);
}
if(way==1) {
output_high(RS485_EN1);
output_high(RS485_EN2);
delay_ms(25);
}
}
void clear() {
rs_init(0);
led_control(GREEN);
rcv_data=0;
}
#INT_RDA
void receiving_data() {
rcv_data=getc(RS);
}
void main(void) {
int32 tagNum=0x00;
int8 customerCode=0x00;
int8 tag_adr=0x00; // tag_adr is between 0-33
enable_interrupts(INT_RDA);
enable_interrupts(GLOBAL);
rf_init();
//rf_powerUp();
rs_init(0);
led_control(GREEN);
while(true) {
restart_wdt();
if(rcv_data==0x45) {
led_control(OFF);
reset_4150();
CLEAR();
}
if(rcv_data==0x4C) {
led_control(YELLOW);
rs_init(1);
err = login_4150(0x00);
switch(err) {
case ERR_OK: sprintf(msg,"\n\rOK"); break;
case ERR_LIW: sprintf(msg,"\n\rLIW"); break;
case ERR_NAK: sprintf(msg,"\n\rNAK"); break;
case ERR_PARITY: sprintf(msg,"\n\rPARITY"); break;
}
puts(msg,RS);
CLEAR();
}
if(rcv_data==0x54) {
led_control(WHITE);
rs_init(1);
if((err = read_4150(msg,tag_adr)) == ERR_OK) {
tagNum = make32(msg[3], msg[2], msg[1], msg[0]);
sprintf(msg, "\n\rData: %lu", tagNum);
}
switch(err) {
case ERR_LIW: sprintf(msg,"\n\rLIW"); break;
case ERR_NAK: sprintf(msg,"\n\rNAK"); break;
case ERR_PARITY: sprintf(msg,"\n\rPARITY"); break;
}
puts(msg,RS);
CLEAR();
}
if(rcv_data==0x52) {
led_control(BLUE);
if(read_4102(code)) {
rs_init(1);
tagNum = make32(code[1],code[2],code[3],code[4]);
sprintf(msg,"\r\nScanned ID: %u-%lu",customerCode,tagNum);
puts(msg,RS);
sprintf(msg,"( [%u][%u]",code[0],code[1]);
puts(msg,RS);
sprintf(msg,"[%u][%u][%u] )",code[2],code[3],code[4]);
puts(msg,RS);
CLEAR();
}
}
if(rcv_data==0x57) {
led_control(RED);
rs_init(1);
tagNum = make32(0x01,0x02,0x03,0x04);
tag_adr=0;
err = write_4150(tagNum,tag_adr);
switch(err) {
case ERR_OK: sprintf(msg,"\n\rOK"); break;
case ERR_LIW: sprintf(msg,"\n\rLIW"); break;
case ERR_NAK: sprintf(msg,"\n\rNAK"); break;
case ERR_PARITY: sprintf(msg,"\n\rPARITY"); break;
}
puts(msg,RS);
PWprotect_4150(FALSE);
CLEAR();
}
}
}
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olivervd
Joined: 10 Oct 2014
Posts: 10
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| Posted: Tue Oct 14, 2014 5:43 am |
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hello,
me too.
I have same problem.
Can you help me?sorry |
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asmboy
Joined: 20 Nov 2007
Posts: 2128
Location: albany ny
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| Posted: Tue Oct 14, 2014 6:10 am |
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see #4 in this post
http://www.ccsinfo.com/forum/viewtopic.php?t=26245
this of course dos not compile as is.
AND
also - you have quite a few LIBS that you call -but no code for them shown.
AND the "logic" of your tests on
rcv_data seems quite faulty.
To see this ,
trace out what happens in main when a given recognized value for it IS received, but then no new chars follow ?
What will main() do about it ?
what does your schematic look like
OR how are you simulating / testing this ? |
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olivervd
Joined: 10 Oct 2014
Posts: 10
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| Posted: Thu Oct 16, 2014 12:56 am |
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Hello,
Thanks for you answer, this is my code.
I use PCW compiler(CCS).
My hardware is the recommended EM Marin for Em4150. If you need my schematic I can send for email.
When I run my circuit emerge the next message "ERROR PARITY".
I can read em4100 and em4102, also I can write em4150, but I can't read em4150.
Can you help me?
This is my email: olivercharmander@hotmail.com
| Code: |
#include <16F876.h>
#fuses HS,NOWDT,NOPROTECT,NOLVP,NOBROWNOUT,NOPUT
#use delay(clock=20000000)
#users232(baud=9600,parity=N,xmit=PIN_C6,rcv=PIN_C7,bits=8,stream=S)
#include <em4095.c>
#include <em4102.c>
#include <em4150.c>
#include <stdlib.h>
int32 msg;
int8 err;
int32 tagNum=0x00;
int8 tag_adr=5;// tag_adr is between 0-33
#INT_RDA
void receiving_data() {
rcv_data=getc(RS);
printf("valor de rcv_data principal= %d",rcv_data);
}
void main(void) {
enable_interrupts(INT_RDA);
enable_interrupts(GLOBAL);
delay_ms(1000);
rf_init();
rf_powerUp();
while(true) {
restart_wdt();
err = read_4150(*msg,tag_adr);
tagNum=msg;
switch(err) {
case ERR_OK: //sprintf(msg, "\n\rData: %lu", tagNum);
sprintf(msg, "\n\rData: %x", tagNum);
break;
case ERR_LIW: sprintf(msg,"\n\rLIW LECTURA");
break;
case ERR_NAK: sprintf(msg,"\n\rNAK LECTURA");
break;
case ERR_PARITY:
sprintf(msg,"\n\rPARITY LECTURA");
//printf("PARITY\n\r");
break;
}
puts(msg,RS);
clear();
}
}
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olivervd
Joined: 10 Oct 2014
Posts: 10
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| Posted: Thu Oct 16, 2014 1:07 am |
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| For simulation I use serial transmission, by Arduino (I use Arduino example "Software Serial"). |
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PCM programmer
Joined: 06 Sep 2003
Posts: 21708
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| Posted: Thu Oct 16, 2014 11:32 am |
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First, your code doesn't compile, so that's not your real program.
For example, you have stream=S, but then you call fgetc(RS).
There are several errors like this.
But the main problem is that you are not calling read_em4150()
correctly. The first parameter is declared to be a pointer, so you
should be giving it the address of msg.
You are doing this. It's wrong:
| Quote: | | err = read_4150(*msg, tag_adr); |
You should do it like this:
| Code: | | err = read_4150(&msg, tag_adr); |
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olivervd
Joined: 10 Oct 2014
Posts: 10
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| Posted: Fri Oct 17, 2014 12:36 am |
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PCM thank you for your answer,
I have tried your advise but I have a same problem. I run my circuit and emerge the same error "PARITY".
| Code: |
#include <16F876a.h>
#fuses HS,NOWDT,NOPROTECT,NOLVP,NOBROWNOUT,NOPUT
#use delay(clock=20000000)
#use rs232(baud=9600,parity=N,xmit=PIN_C6,rcv=PIN_C7,bits=8,stream=RS)
#include <em4095.c>
#include <em4102.c>
#include <em4150.c>
#include <stdlib.h>
int32 msg;
int8 err;
int32 tagNum=0x00;
int8 tag_adr=5;// tag_adr is between 0-33
void main(void) {
rf_init();
rf_powerUp();
while(true) {
// restart_wdt();
//LOGIN
err = login_4150(0x00);
// resultado=readProtect_4150(1, 2);
// printf("valor de Resultado = %d\n\r",resultado);
// printf("valor de ERR LOGIN = %d\n\r",err);
switch(err) {
case ERR_OK: printf("\n\rOK LOGIN"); break;
case ERR_LIW:printf("\n\rLIW LOGIN"); break;
case ERR_NAK:printf("\n\rNAK LOGIN"); break;
case ERR_PARITY: printf("\n\rPARITY LOGIN"); break;
}
puts(msg,RS);
delay_ms(500);
//ESCRITURA
tagNum = make32(0x01,0x02,0x03,0x04);
tag_adr=5;
err = write_4150(tagNum,tag_adr);
switch(err) {
case ERR_OK: printf("\n\rOK ESCRITURA");
break;
case ERR_LIW:printf("\n\rLIW ESCRITURA"); break;
case ERR_NAK: printf("\n\rNAK ESCRITURA"); break;
case ERR_PARITY: printf("\n\rPARITY ESCRITURA"); break;
}
puts(msg,RS);
PWprotect_4150(FALSE);
delay_ms(500);
err=setPassword_4150(oldPassword, newPassword);
printf("valor de ERR Password = %d\n\r",err);
//LECTURA
err = read_4150(&msg,5);
tagNum=msg;
switch(err) {
case ERR_OK: printf("Data: %lu \n\r", tagNum);
printf("Data: %x \n\r", tagNum);
break;
case ERR_LIW: printf("\n\rLIW LECTURA");
break;
case ERR_NAK: printf("\n\rNAK LECTURA");
break;
case ERR_PARITY:
printf("\n\rPARITY LECTURA");
//printf("PARITY\n\r");
break;
}
puts(msg,RS);
//RESET
err= reset_4150() ;
switch(err) {
case ERR_OK: printf("\n\rOK RESET");
break;
case ERR_LIW: printf("\n\rLIW RESET");
break;
case ERR_NAK: printf("\n\rNAK RESET");
break;
}
}
} |
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olivervd
Joined: 10 Oct 2014
Posts: 10
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| Posted: Fri Oct 17, 2014 12:50 am |
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| The error R change RS, it was error by copy-paste. |
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