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Borodin
Joined: 28 Jul 2006
Posts: 4
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| I2C slave problem/USB HID |
 Posted: Sun Aug 06, 2006 2:56 pm |
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Hello,
I'm using a i2c master who's sending data to slave address 0x46. I'm using a PIC18F4550 as slave. I put the data and the address I received in hex-format on the screen (hyperTerminal) via RS232. But I also want to put the address and data on the screen with my device configured as a USB HID device.
I tested the USB-module (HID) and it works fine. I changed the report counter in a .h-file from 2 to 4 (for sending 4 bytes to the host). Then I tested the i2c interrupt and it also works fine. But when I put them together in one project, my USB never gets enumerated.
Can anyone tell me if there is a fault, any suggestions ... ?
All comments are welcome.
Thanks.
| Code: | /*******************************************************************************
Configuratie, includes en defines
*******************************************************************************/
#include <18F4550.h>
#device adc=8
#define __USB_PIC_PERIF__ 1 //interne USB peripheral gebruiken
//instellingen en configuraties
#FUSES NOWDT //Geen Watch Dog Timer
#FUSES WDT32768 //Watch Dog Timer Postscale = 1:32768
#FUSES HSPLL //High Speed Crystal met PLL ge-enabled
#FUSES NOPROTECT //Code niet beschermd van lezen
#FUSES NOBROWNOUT //Geen brownout reset
#FUSES BORV46 //Brownout reset op 4.6V
#FUSES PUT //Power Up Timer
#FUSES NOCPD //Geen EE bescherming
#FUSES STVREN //Stack full/underflow zal reset veroorzaken
#FUSES NODEBUG //Geen Debug mode voor ICD
#FUSES NOLVP //Geen Low Voltage Programmeren op pin B5(PIC18)
#FUSES NOWRT //Programma geheugen niet schrijf-beveiligd
#FUSES NOWRTD //Data EEPROM niet schrijf-beveiligd
#FUSES NOIESO //Internal External Switch Over mode disabled
#FUSES NOFCMEN //Fail-safe clock monitor disabled
#FUSES NOPBADEN //PORTB pins zijn geconfigureerd als digitale
//ingangskanalen bij RESET
#FUSES NOWRTC //registers niet schrijf-beveiligd
#FUSES NOWRTB //Boot block niet schrijf-beveiligd
#FUSES NOEBTR //Geheugen niet lees-beveiligd
#FUSES NOEBTRB //Boot block niet lees-beveiligd
#FUSES NOCPB //Geen Boot Block code bescherming
#FUSES NOMCLR //Master Clear pin disabled
#FUSES LPT1OSC //Timer1 geconfigureerd voor low-power werking
#FUSES NOXINST //Extended set extensie en ge-indexeerde Addressing
//mode disabled (Legacy mode)
#FUSES PLL6 //24 MHz externe OSC
#FUSES VREGEN //USB Voltage Regulator Enable
#FUSES CPUDIV1 //96MHz PLL, divided by 2 for CPU clock
#FUSES USBDIV //Clock source from 96 MHz PLL/2
#FUSES NOLPT1OSC //Timer1 oscillator geconfigureerd voor high power
//(low power timer1 osc enable)
#FUSES CCP2B3 //CCP2 input/output is multiplexed met RB3
#FUSES NOICPRT //Dedicated in Circuit Debug/Programming enable
#FUSES NOXINST //Extended Instruction Set disabled
#use delay(clock=48000000)
#use rs232(baud=115200,parity=N,xmit=PIN_C6,rcv=PIN_C7,bits=8)
#use i2c(Slave,sda=PIN_B0,scl=PIN_B1,address=0x46 ,FORCE_HW)
//include HID handling code.
#DEFINE USB_HID_DEVICE TRUE
/*de volgede defines zijn nodig om de TX endpoint1 (EP1) te enablen en om buffer-
ruimte te alloceren. */
#define USB_EP1_TX_ENABLE USB_ENABLE_INTERRUPT //IN interrupt transfers voor EP1
#define USB_EP1_TX_SIZE 8 //alloceer 8 bytes in de hardware voor het verzenden
/*de volgede defines zijn nodig om de RX endpoint1 (EP1) te enablen en om buffer-
ruimte te alloceren. */
#define USB_EP1_RX_ENABLE USB_ENABLE_INTERRUPT //OUT interrupt transfers voor EP1
#define USB_EP1_RX_SIZE 8 //alloceer 8 bytes in de hardware voor het ontvangen
//Microchip 18Fxx5x hardware layer voor usb.c
#include <pic18_usb.h>
//USB configuratie en device descriptors voor dit USB device
#include <usb_desc_hid.h>
//handlet usb setup tokens en get descriptor reports
#include <usb.c>
#DEFINE LED_RUNNING PIN_A3
#DEFINE LED_ISR PIN_A4
#DEFINE LED1 PIN_A2
#define LED_ON output_high
#define LED_OFF output_low
//adresbyte and buffer array definiëren
BYTE address, buffer[10]; //zie interrupt en while-lus
//BYTE incoming, state;
int r = 0;
/*******************************************************************************
i²c_interrupt
*******************************************************************************/
//enkel adres 0x46 wordt ge-acknoledged, de instelling van meerdere adressen
//geeft uitvoeringsfouten en while lus wordt niet uitgevoerd.
#INT_SSP
void ssp_interupt ()
{
BYTE incoming,state;
state = i2c_isr_state();
if(state < 0x80) //Master is sending data
{
incoming = i2c_read();
if(state == 1) //First received byte is address
address = incoming;
if(state == 2) //Second received byte is data
buffer[address] = incoming;
}
r=1;//zie while-lus
OUTPUT_HIGH(LED_ISR);
}
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);
if (new_connected && !last_connected) //USB geconnecteerd, maar nog niet ge-
//enumereerd door de host.
printf("\r\n\nUSB connected, waiting for enumeration...");
if (!new_connected && last_connected) //USB nog niet geconnecteerd
printf("\r\n\nUSB disconnected, waiting for connection...");
if (new_enumerated && !last_enumerated) //USB werd geënumereerd door de host
printf("\r\n\nUSB enumerated by PC/HOST");
if (!new_enumerated && last_enumerated) //nog niet tegengekomen, maar heb het
//wel gedefinieerd.
printf("\r\n\nUSB unenumerated by PC/HOST, waiting for enumeration...");
last_connected=new_connected;
last_enumerated=new_enumerated;
}
/*******************************************************************************
main-programma
*******************************************************************************/
void main()
{
int8 out_data[20]; //out: PIC => HOST
int8 send_timer=0;
int i = 0;
BYTE testwaarde = 0x00;
BYTE testwaarde2 = 0x00;
LED_ON(LED1);
usb_init_cs();
setup_adc_ports(NO_ANALOGS|VSS_VDD);
setup_adc(ADC_OFF);
setup_psp(PSP_DISABLED);
setup_wdt(WDT_OFF);
setup_timer_0(RTCC_INTERNAL);
setup_timer_1(T1_DISABLED);
setup_timer_2(T2_DISABLED,0,1);
setup_timer_3(T3_DISABLED|T3_DIV_BY_1);
setup_comparator(NC_NC_NC_NC);
setup_vref(FALSE);
enable_interrupts(GLOBAL); //Globale interrupt Call
enable_interrupts(INT_SSP); //Interrupt i2c
setup_low_volt_detect(FALSE);
setup_oscillator(False);
printf("\r\n\Running...\r\n");
OUTPUT_HIGH(LED_RUNNING);
while (TRUE) //while-lus
{
usb_task();
usb_debug_task();
if (usb_enumerated())
{
OUTPUT_HIGH(PIN_A5);//LED indicates that system is enumerated
if (r==1) //er is een interrupt geweest
{
if (!send_timer)
{
send_timer=250;
//gegevens in de databuffer steken
out_data[0]=address;
out_data[1]=buffer[address];
out_data[2]=testwaarde;
out_data[3]=testwaarde2;
//naar buiten brengen via USB en RS232
if (usb_put_packet(1, out_data, 4 ,USB_DTS_TOGGLE))//4 bytes zenden naar de host
{
printf("\r\n\Address = 0x%X",out_data[0]);
printf("\r\n\Buffer[address] = 0x%X",out_data[1]);
printf("\r\n\------------------->testwaarde = 0x%X",out_data[2]);
printf("\r\n\------------------->testwaarde2 = 0x%X",out_data[3]);
}
}
send_timer--;
delay_ms(1);
//OUTPUT_LOW(LED_ISR);
r=0;
testwaarde++;
}
if (testwaarde == 0xFF)
{
testwaarde = 0x00;
testwaarde2++;
if (testwaarde2 == 0xFF)
testwaarde2 = 0x00;
}
}
}//einde van de while lus
}//einde van de main funtie
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Last edited by Borodin on Mon Aug 07, 2006 1:38 am; edited 2 times in total |
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Borodin
Joined: 28 Jul 2006
Posts: 4
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| Posted: Sun Aug 06, 2006 2:57 pm |
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| The code isn't coming thru. |
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Borodin
Joined: 28 Jul 2006
Posts: 4
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| Posted: Sun Aug 06, 2006 3:02 pm |
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Thank you for that, PCM programmer.
Last edited by Borodin on Mon Aug 07, 2006 1:33 am; edited 1 time in total |
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PCM programmer
Joined: 06 Sep 2003
Posts: 21708
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| Posted: Sun Aug 06, 2006 3:05 pm |
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| Quote: | | The code isn't coming thru. |
Edit your post, fix any problems, and then select the checkbox below the
posting window that says "Disable HTML in this post". Then click Submit. |
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PICoHolic
Joined: 04 Jan 2005
Posts: 224
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| Posted: Fri Apr 27, 2007 2:17 am |
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| Quote: | | Then I tested the i2c interrupt and it also works fine. |
Hello Borodin,
Could you plz tell me under which conditions (FUSES, compiler vesion etc...) it worked fine (I2C Slave) ?
Thank you! |
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