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fabiooo
Joined: 13 Oct 2010
Posts: 2
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| Problem with usb connection (pic 18f2550) |
 Posted: Wed Oct 13, 2010 6:53 pm |
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Hi guys,
Here goes my problem.
I'm building a remote temperature meter. After 2 months I could finally get the RF mode operating, but now the USB module just doesn't works!!!
Simulating in Proteus the device connects normally but don't send or receive any information and when i try to see the VID and PID at the properties of the device in device manager, it just gives an error and freezes the screen needing a CTRL + ALT + DEL to reinitialize.
I used J1M's example for my base project, but changing the fuses because I need a 16MHz clock to my pic 18F (to RF comm can work normal) and a 48MHz to usb module.
I'm using a 16MHz crystal.
I'm wondering where my fuses can be wrong, cause I read several times the datasheet and articles and this just doesn't works!!
PLEASE HELP ME!!
My code: (Please don't look at the comments, I didn't have time to properly change them).
| Code: |
#include <18f2550.h> //archivo de cabecera
#fuses HSPLL,MCLR,NOWDT,NOPROTECT,NOLVP,NODEBUG,USBDIV,PLL4,CPUDIV4,VREGEN,NOPBADEN // fuse con cristal 4Mhz
//#pragma _CONFIG1H = 0b00001110;
//#pragma _CONFIG1L = 0b00111011;
#use delay(clock=16000000) // el clock que tendremos a la entrada del CPU
#use rs232(baud=1200, xmit=PIN_C6, rcv=PIN_C7,bits=8, ERRORS)//Configura serial
#include <stdlib.h>
#include <string.h>
/////////////////////////////////////////////////////////////////////////////
//
// CCS Library dynamic defines. For dynamic configuration of the CCS Library
// for your application several defines need to be made. See the comments
// at usb.h for more information
//
/////////////////////////////////////////////////////////////////////////////
#define USB_HID_DEVICE FALSE //deshabilitamos el uso de las directivas HID
#define USB_EP1_TX_ENABLE USB_ENABLE_BULK //turn on EP1(EndPoint1) for IN bulk/interrupt transfers
#define USB_EP1_RX_ENABLE USB_ENABLE_BULK //turn on EP1(EndPoint1) for OUT bulk/interrupt transfers
#define USB_EP1_TX_SIZE 8 //size to allocate for the tx endpoint 1 buffer
#define USB_EP1_RX_SIZE 1 //size to allocate for the rx endpoint 1 buffer
/////////////////////////////////////////////////////////////////////////////
//
// Include the CCS USB Libraries. See the comments at the top of these
// files for more information
//
/////////////////////////////////////////////////////////////////////////////
#include <pic18_usb.h> //Microchip PIC18Fxx5x Hardware layer for CCS's PIC USB driver
#include <PicUSB.h> //Configuración del USB y los descriptores para este dispositivo
#include <usb.c> //handles usb setup tokens and get descriptor reports
/////////////////////////////////////////////////////////////////////////////
//
// Include the CCS USB Libraries. See the comments at the top of these
// files for more information
//
/////////////////////////////////////////////////////////////////////////////
#define LCD_DB4 PIN_B0
#define LCD_DB5 PIN_B1
#define LCD_DB6 PIN_B2
#define LCD_DB7 PIN_B3
//
#define LCD_RS PIN_B5
//#define LCD_RW PIN_B4
#define LCD_E PIN_B6
#include <flex_lcd.c>
//*********************************************************
//*********************************************************
void main(void)
{
char txt[18],saida[10],saida2[10],temp;
unsigned char m,k;
int x=0,j=0,i=0,test=0,u=0,sai=0;
int8 recebe[1];
usb_init(); //inicializamos el USB
usb_task(); //habilita periferico usb e interrupciones
usb_wait_for_enumeration(); //esperamos hasta que el PicUSB sea configurado por el host
//disable_interrupts(global); // desactivando interrupciones globales
setup_adc_ports(NO_ANALOGS); // desactivando puertos analogicos
set_tris_b(0x0); // configurando los puertos como salidas
Lcd_Init(); // Inicialização do LCD
lcd_gotoxy(1,1);
Lcd_putc("Temp.:"); //Escrita da palavra Temperatura na linha 1 e coluna 1
// uart1_init(300); //Inicialização do módulo transmissão/recepção USART com baud rate de 300
//delay_ms(90); //Atraso para estabilização do módulo
// delay_ms(50);
while(1){
//Leitura dos valores recebidos pela comunicação serial
//if (kbhit()) {
// while(m!= 'F' && k!='F' && sai!=1){
// k=getc();
// delay_ms(30);
// m= getc();
// delay_ms(30);
// lcd_gotoxy(1,2);
// Lcd_putc(k);
// lcd_gotoxy(2,2);
// Lcd_putc(m);
// }
sai=1;
//}
// delay_ms(20);
//////////////////////inicio da recepcao dos dados do pic Slave////////////////
//
//
//
///////////////////////////////////////////////////////////////////////////////
if (kbhit()) { //se está chegando dados
k=getc(); //lê o dado até o caracter
txt[i]=k;
i++;
////////////////////////teste de redundancia///////////////////////////
//
//descricao
//
///////////////////////////////////////////////////////////////////////
if(i==5){//inicio do teste de redundancia
for(j=0;j<5;j++){
temp=txt[j];
for(x=0;x<4;x++){ //verifica se entre as cinco
//char que chegaram pelo menos
if(x!=j){ //duas tem que ser iguais
if(temp==txt[x]){test++;}
if (test==2){
saida[u]=temp;
//quando acha a igualdade salva na var saida
i=0;test=0;
}
//nao encontrando a igualdade repete-se o processo
if(x==4 && test<2){test=0;}
}
}
}
u++;
}
/////////////////////////Fim do teste de redundancia//////////////////
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
//////////////////////////impressao lcd///////////////////////////////
//
//
//////////////////////////////////////////////////////////////////////
if(u==8 && saida[0]=='F'){ //Se a palavra inteira foi lida
u=0;
lcd_gotoxy(8,1);
printf(lcd_putc,saida);//Apresenta temperatura no display LCD
//lcd_gotoxy(1,14);
//Lcd_putc(0xDF); //escreve º
//Lcd_putc('C');// e escreve a palavra 'graus'
sai=0;
}//else{lcd_gotoxy(1,2);printf(lcd_putc,"não sincronizou");delay_ms(20);}
////////////////////////////////Fim da impressão lcd//////////////////
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
//lembrar de testar a velocidade no modulo real
//pra saber quais as temporizações corretas para funcionar direito
}//fim de recepção
////////////////////////////////Fim da recepção dos dados//////////////////////
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
//////////////////////Início do envio dos dados para o PC//////////////////////
//
//
//
///////////////////////////////////////////////////////////////////////////////
if(usb_enumerated()) //si el PicUSB está configurado
{
if (usb_kbhit(1)) //si el endpoint de salida contiene datos del host
{
usb_get_packet(1, recebe, 1); //cojemos el paquete de tamaño 1bytes del EP1 y almacenamos en recibe
lcd_gotoxy(7,2);
printf(lcd_putc,"haa");
if (recebe == 0x61) // Modo_Suma
{
lcd_gotoxy(1,2);
Lcd_putc("usb");
usb_put_packet(1, saida, 8, USB_DTS_TOGGLE);
sai=0;
}
}
}
////////////////////////////////Fim do envio dos dados/////////////////////////
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
}
}
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Thank you veeeery much if you help!!   |
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Ttelmah
Joined: 11 Mar 2010
Posts: 19515
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| Posted: Thu Oct 14, 2010 4:34 am |
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Seriously, try a chip first.
Proteus has a _lot_ of problems with it's simulator, when you start getting into complex peripherals like the USB. As an example, of the last five USB projects I have built, only one worked in the Proteus 7 simulator, but all 5 work in the real chip...
Best Wishes |
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fabiooo
Joined: 13 Oct 2010
Posts: 2
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| Posted: Fri Oct 15, 2010 5:43 am |
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thank you a lot Ttelmah,
I'm thinking about that this days, because if the Proteus run absolutely any configuration you build, he just can wrong at all, cause is too generic.
I'll try the real one and post the reply. |
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