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/* Name: main.c
* Project: hid-mouse, a very simple HID example
* Author: Christian Starkjohann
* Creation Date: 2008-04-07
* Tabsize: 4
* Copyright: (c) 2008 by OBJECTIVE DEVELOPMENT Software GmbH
* License: GNU GPL v2 (see License.txt), GNU GPL v3 or proprietary (CommercialLicense.txt)
* This Revision: $Id: main.c 790 2010-05-30 21:00:26Z cs $
*/
#include <stdint.h>
#include <avr/interrupt.h>
#include <avr/wdt.h>
#include <avr/sleep.h>
#include <util/delay.h>
#include "usbdrv.h"
#include "oddebug.h"
#include "vusb.h"
#include "keyboard.h"
#include "host.h"
#include "timer.h"
#include "uart.h"
#include "debug.h"
#include "suspend.h"
#ifdef SLEEP_LED_ENABLE
# include "sleep_led.h"
#endif
#define UART_BAUD_RATE 115200
/* This is from main.c of USBaspLoader */
static void initForUsbConnectivity(void) {
uint8_t i = 0;
usbInit();
/* enforce USB re-enumerate: */
usbDeviceDisconnect(); /* do this while interrupts are disabled */
while (--i) { /* fake USB disconnect for > 250 ms */
wdt_reset();
_delay_ms(1);
}
usbDeviceConnect();
sei();
}
void usb_remote_wakeup(void) {
cli();
int8_t ddr_orig = USBDDR;
USBOUT |= (1 << USBMINUS);
USBDDR = ddr_orig | USBMASK;
USBOUT ^= USBMASK;
_delay_ms(25);
USBOUT ^= USBMASK;
USBDDR = ddr_orig;
USBOUT &= ~(1 << USBMINUS);
sei();
}
int main(void) {
bool suspended = false;
#if USB_COUNT_SOF
uint16_t last_timer = timer_read();
#endif
#ifdef CLKPR
// avoid unintentional changes of clock frequency in devices that have a
// clock prescaler
CLKPR = 0x80, CLKPR = 0;
#endif
#ifndef NO_UART
uart_init(UART_BAUD_RATE);
#endif
keyboard_setup();
host_set_driver(vusb_driver());
debug("initForUsbConnectivity()\n");
initForUsbConnectivity();
keyboard_init();
#ifdef SLEEP_LED_ENABLE
sleep_led_init();
#endif
debug("main loop\n");
while (1) {
#if USB_COUNT_SOF
if (usbSofCount != 0) {
suspended = false;
usbSofCount = 0;
last_timer = timer_read();
# ifdef SLEEP_LED_ENABLE
sleep_led_disable();
# endif
} else {
// Suspend when no SOF in 3ms-10ms(7.1.7.4 Suspending of USB1.1)
if (timer_elapsed(last_timer) > 5) {
suspended = true;
# ifdef SLEEP_LED_ENABLE
sleep_led_enable();
# endif
/*
uart_putchar('S');
_delay_ms(1);
cli();
set_sleep_mode(SLEEP_MODE_PWR_DOWN);
sleep_enable();
sleep_bod_disable();
sei();
sleep_cpu();
sleep_disable();
_delay_ms(10);
uart_putchar('W');
*/
}
}
#endif
if (!suspended) {
usbPoll();
// TODO: configuration process is incosistent. it sometime fails.
// To prevent failing to configure NOT scan keyboard during configuration
if (usbConfiguration && usbInterruptIsReady()) {
keyboard_task();
}
vusb_transfer_keyboard();
#ifdef RAW_ENABLE
usbPoll();
if (usbConfiguration && usbInterruptIsReady3()) {
raw_hid_task();
}
#endif
} else if (suspend_wakeup_condition()) {
usb_remote_wakeup();
}
}
}
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