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Ln_mark7930
Joined: 06 Mar 2009
Posts: 21
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| USB-HID PIC24FJ256GB106 |
 Posted: Fri Oct 29, 2010 4:10 am |
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Hi boys,
I need help becuase I'm start to working with PIC24. I need connect my pic with USB in HID mode.
I have 20 Mhz External oscillator, VUSB in connect to 330 nF capacitor to GND, D+ e D- is correctly connect to miniUSB connector and my micro is PIC24FJ256GB106. I have also a USB pin sense that is place to PIN_B0.
The problem is that microncontroller Never connect to USB. Windows don't show Pop-Up, don'play sound (USB inserted).Everything do nothing.
I think that I wrong some configuration on fuses/delays.
I start to working yesterday with this device and I need more explanation. I don't find enough information about.
I have problem also with USART, and I2C. Someone can help me?
I have post the circuit on [url] http://www.megaupload.com/?d=SUM2VYPN.
this is my main code:
| Code: |
#include <24FJ256GB106.h>
#FUSES NOWDT //No Watch Dog Timer
//#FUSES NOJTAG //JTAG disabled
#FUSES NOPROTECT //Code not protected from reading
#FUSES NOWRT //Program memory not write protected
#FUSES DEBUG //No Debug mode for ICD
#FUSES ICSP2 //ICD uses PGC1/PGD1 pins
//#FUSES WINDIS //Watch Dog Timer in non-Window mode
//#FUSES WPRES128 //Watch Dog Timer PreScalar 1:128
//#FUSES WPOSTS16 //Watch Dog Timer PostScalar 1:32768
#FUSES NOIESO //Internal External Switch Over mode enabled
//#FUSES PR //Primary Oscillator
#FUSES NOCKSFSM //Clock Switching is disabled, fail Safe clock monitor is disabled
#FUSES NOOSCIO //OSC2 is clock output
//#FUSES HS //High speed Osc (> 4mhz for PCM/PCH) (>10mhz for PCD)
#FUSES IOL1WAY //Allows only one reconfiguration of peripheral pins
#fuses HS,PR_PLL,PLL5 // Crystal HS, 4xPLL
//#fuses OSC_CRYSTAL
//#FUSES NOPUT
//#FUSES NOMCLR
//#FUSES WPEND_LOW
//#FUSES NOWPCFG
//#FUSES NOWPDIS
//#FUSES WPFP3
//#FUSES WPFP4
////#FUSES PLL6 //Divide By 12(48MHz oscillator input)
//#FUSES DISUVREG
//#FUSES WPFP5
//#FUSES WPFP6
//#FUSES WPFP0
//#FUSES WPFP1
//#FUSES WPFP2
//#FUSES WPFP7
//#FUSES WPFP8
//#FUSES RESERVED
//#use delay(clock=20000000)
#use delay (clock=20000000)
#define __USB_PIC_PERIF__ 1
#define USB_CON_SENSE_PIN PIN_B0
#define USB_CONFIG_HID_TX_SIZE 64
#define USB_CONFIG_HID_RX_SIZE 64
#define USB_CONFIG_HID_TX_POLL 255
#define USB_CONFIG_HID_RX_POLL 255
#include <pic24_usb.h>
#include <usb_desc_hid.h>
#include <usb.c>
#define LED1 PIN_D6 // led open port
#define LED2 PIN_G6 // led rx RS485
#define LED3 PIN_G7 // led tx RS485
#define LED4 PIN_G8 // led STATUS
#define LED5 PIN_G9 // led rx USB
int8 start=0;
int8 buffer[64]={0};
int8 msg_ready_485=1;
int8 index_485=0;
int8 start_485=0;
int8 checksum_485=0;
int8 dato_485=0;
int8 dato;
int8 msg_ready=0;
int8 dataeb;
int8 index_radio=0;
int8 index_usb=0;
int8 index_usb1=0;
int8 lunghezza=0;
int8 buff_radio[64]={0};
int8 buff_485[64]={0};
int8 in_data[64]={0}; // Set array to zero
int8 out_data[64]={0}; // Set array to zero
int8 t_led3=0;
int8 t_led5=0; // tempo accensione LED5
int8 t_led6=0; // tempo accensione LED6
int16 timeout=0;
INT8 i=0,z=0,g=0;
int8 loli=0;
int8 checksum=0;
int8 chksum=0;
int8 chksum2=0;
int8 Flag1 = 0x00;
#bit ready_usb = Flag1.0 // flag 5 sec SETTATO a 1 all'avvio !!!
#bit ready_485= Flag1.1 // flag lettura sonde drive
#bit pippo = Flag1.2 // flag flash led4
#bit ready2_485 = Flag1.3 // flag 5 sec
#bit toni = Flag1.4 // flag uscita aux attiva
/////////////////////////////////////////////////////////////////////////
// usb_debug_task()
//
// When called periodically, displays debugging information over serial
// to display enumeration and connection states. Also lights LED1 based upon
// enumeration and status.
/////////////////////////////////////////////////////////////////////////
void usb_debug_task(void)
{
static int8 last_connected;
static int8 last_enumerated;
int8 new_connected;
int8 new_enumerated;
new_connected=usb_attached();
new_enumerated=usb_enumerated();
// if (new_enumerated)
// LED_ON(LED1);
// else
// LED_OFF(LED1);
//
last_connected=new_connected;
last_enumerated=new_enumerated;
}
void main(void)
{
int8 l=0,i=0;
int8 lunghezza=0;
int8 lunghezza2=0;
int32 cont=0;
////setup_wdt(WDT_TIMES_128);
//set_tris_b(0b00011110); // porta utilizzata per i vari tasti.
//set_tris_c(0b10000000); // tutto out: EEPROM I2C,IR_OUT, BUZZER, LED,485
//set_tris_a(0b10000000); // tutto out: EEPROM I2C,IR_OUT, BUZZER, LED,485
set_tris_d(0x0000); // tutto out: EEPROM I2C,IR_OUT, BUZZER, LED,485
set_tris_G(0x0000); // tutto out: EEPROM I2C,IR_OUT, BUZZER, LED,485
//set_tris_f(0x0010); // tutto out: EEPROM I2C,IR_OUT, BUZZER, LED,485
output_high(LED1);
delay_ms(500);
output_high(LED2);
delay_ms(500);
output_high(LED3);
delay_ms(500);
output_high(LED4);
delay_ms(500);
output_high(LED5);
delay_ms(500);
output_low(LED1);
delay_ms(500);
output_low(LED2);
delay_ms(500);
output_low(LED3);
delay_ms(500);
output_low(LED4);
delay_ms(500);
output_low(LED5);
delay_ms(500);
usb_init();
usb_task();
usb_debug_task();
while (TRUE)
{
usb_task();
usb_debug_task();
if (usb_enumerated())
{
if(usb_kbhit(1))
{
lunghezza=usb_get_packet(1,in_data,64);
lunghezza++; // used to debug breakpoint
output_high(LED4);
delay_ms(500);
output_low(LED4);
lunghezza++; // used to debug breakpoint
}
}
}
}
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FvM
Joined: 27 Aug 2008
Posts: 2337
Location: Germany
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| Posted: Fri Oct 29, 2010 11:07 am |
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The fuses seem basically correct.
As a minor point, the correct #use delay statement would set clock=32M, not 20M. So UART frequencies and delays can't be right, but USB operation shouldn't be affected.
Unfortunately, I can't decode the schematic details, because it's too low resolution. |
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Ln_mark7930
Joined: 06 Mar 2009
Posts: 21
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| Do you want original schematics? |
| Posted: Fri Oct 29, 2010 11:36 am |
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FvM
Joined: 27 Aug 2008
Posts: 2337
Location: Germany
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| Posted: Fri Oct 29, 2010 2:35 pm |
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| Quote: | | The number inserted inside #use delay(clock=xxxxxx) mean witch primary oscillator (external oscillator) work at xxxxxx frequency |
No, just refer to the manual:
| Quote: | | clock=speed...This specified the clock the CPU runs at. |
It's 32 MHz (or divided down to 16, 8 ...) with PIC24FxxGB.
You can however use a syntax like this
| Quote: | | #use delay(oscillator=10Mhz, clock=40Mhz) |
It will correctly setup the fuses in some cases. Please don't ask me wheter or not in a specific case...
By the way, according to your schematic, you're using an external 20 MHz crystal, not an oscillator. So it's correct to set #fuse HS, for the latter use EC. |
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FvM
Joined: 27 Aug 2008
Posts: 2337
Location: Germany
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| Posted: Fri Oct 29, 2010 2:53 pm |
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I found two flaws in your schematic related to the USB circuit.
- different from PIC18, VUSB has to be connected to a 3.3V supply
- VBUS is intended to be directly wired to the USB connector. I doubt, if it accepts a 100 k series resistor, but I didn't further check for this point.
For a detailed description of PIC24FxxGB USB interface and suggested operation, consult the respective section 27 of the PIC24F family reference manual rather than the datasheet. |
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