59 lines
1.5 KiB
C
59 lines
1.5 KiB
C
#include <avr/interrupt.h>
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#include <avr/wdt.h>
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#include <util/delay.h>
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#include "usbdrv.h"
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#include "io.h"
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#include "pinport.h"
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int __attribute__((noreturn)) main(void)
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{
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//set watch dog timer with 1 second timer
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wdt_enable(WDTO_1S);
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/* Even if you don't use the watchdog, turn it off here. On newer devices,
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* the status of the watchdog (on/off, period) is PRESERVED OVER RESET!
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*/
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/* RESET status: all port bits are inputs without pull-up.
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* That's the way we need D+ and D-. Therefore we don't need any
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* additional hardware initialization.
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*/
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//odDebugInit(); //intialize debuging printing via serial port
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//DBG1(0x00, 0, 0); //debug serial op: main starts
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//initialize V-usb driver before interupts enabled and entering main loop
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usbInit();
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//disconnect from host enforce re-enumeration, interupts must be disabled during this.
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usbDeviceDisconnect();
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//fake USB disconnect for over 250ms
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uint8_t index = 0;
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while(--index){ //loop 256 times
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wdt_reset(); //keep wdt happy during this time
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_delay_ms(1); //delay 256msec
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}
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//reconnect to host
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usbDeviceConnect();
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//intialize i/o and LED to pullup state
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io_reset();
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//enable interrupts
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sei();
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//=================
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//MAIN LOOP
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//=================
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while (1) {
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//pet the watch doggie to keep him happy
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wdt_reset();
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//must call at regular intervals no longer than 50msec
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//checks for setup packets from what I understand
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usbPoll();
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}
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}
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