PIC18F2550 and USB problem!!!

[angelpic]

Hi, when i compile the "HID_TEST" example and put code in the PIC18F2550 with a 12Mhz resonator (i have changed PLLDIV to 3) is all ok.
When i add in the code LCD routines:

LCD_Init(PORTB)

the PC give me "Unknow USB ..." , Why? Thanx.

[xor]

I believe that the USB freq divisions need to land on 24MHz or 48MHz. You must also enter this result frequency (using PLL) as your Project Editor Clock value so that other timed functions can be managed correctly.

[angelpic]

Please can you send me an example of configuration for a PIC18F2550 with 12 or 20 or 4 Mhz resonator? Which of this resonator is the best for me? Thanx

[xor]

I've successfully used the HID example for the 18F2550 in the mBASIC examples folder. Load up the project and check the configs in the Project Editor. This works with an 8MHz oscillator.

[angelpic]

I've tried with an 8MHz oscillator and with Mikrobasic 18f2550 HID example but when i write:

...
Init_Main
LCD_Init(PORTB)
...

The sample not work

[xor]

What's not working? The example compiles fine by adding LCD_INT():

Code: Select all

main:
  df=0
  Init_Main
  LCD_INIT(PORTB)
  HID_Enable(@userRD_buffer, @userWR_buffer)
  Delay_mS(1000)
  Delay_mS(1000)
     '
     '  rest of example code
     '
end.

[angelpic]

The PC give me message:

"Unknow USB ..."

While if i don't use LCD_INIT(PORTB) the PC know the chip as HID Human Interface.

[xor]

I stuck my '2550 into my board with the USB_HID program, including the LCD_INIT(), and it shows and works with the HID Terminal program in mBASIC Tools. I'm using mB V4.03.

Are you using a development board? If using the EasyPIC3, be sure your USB jumpers JP7, JP8, and JP9, are set to the right-hand position.

[angelpic]

Ok, thanx. The problem is in the Mikrobasic version. With 4.03 work fine

[Jean_Carlod]

Hi!
I'm an inconsistency in the configuration programming routine LCD. The error appears in red. Will you help me?

Follow the following program:

void config()
{
OSCCON=0b11101110; //programa a freq. interna para 4MH//
LCD_INIT(&PORTB); //Configuração do LCD//
Lcd_Cmd(_LCD_CURSOR_OFF);
TRISC=0b10000000;

INTCON2.f7=0; //configura as resist. de pull up//
TRISB=0b00000011;
escreve_apagando_LCD(1,6,"Hello!");
PORTC=0;
PORTC.f0=1;

ADCON1=0b00001101; //seleciona porta AN0 AN1
TRISA=0b00000011;

max_f=0.0;
media=0.0;
teste_valido=0;

Delay_ms(200); //alterado//
escreve_apagando_LCD(2,9,"Menu-->"); //Mensagem de introdução//
LCD_OUT(1,3,"HandGrip FATEC");

}

[biljana.nedeljkovic]

Hello,

I believe I had answered you here:
http://forum.mikroe.com/viewtopic.php?f=13&t=67193

Kind regards,
Biljana