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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/power.h>
#include <avr/wdt.h>
#include <avr/sleep.h>
#include <usbdrv/usbdrv.h>
#include "vusb.h"
#include "keyboard.h"
#include "host.h"
#include "timer.h"
#include "print.h"
#include "suspend.h"
#include "wait.h"
#include "sendchar.h"
#ifdef SLEEP_LED_ENABLE
# include "sleep_led.h"
#endif
#ifdef CONSOLE_ENABLE
void console_task(void);
#endif
#ifdef RAW_ENABLE
void raw_hid_task(void);
#endif
/* 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();
wait_ms(1);
}
usbDeviceConnect();
}
static void vusb_send_remote_wakeup(void) {
cli();
uint8_t ddr_orig = USBDDR;
USBOUT |= (1 << USBMINUS);
USBDDR = ddr_orig | USBMASK;
USBOUT ^= USBMASK;
wait_ms(25);
USBOUT ^= USBMASK;
USBDDR = ddr_orig;
USBOUT &= ~(1 << USBMINUS);
sei();
}
bool vusb_suspended = false;
static void vusb_suspend(void) {
vusb_suspended = true;
#ifdef SLEEP_LED_ENABLE
sleep_led_enable();
#endif
suspend_power_down();
}
#if USB_COUNT_SOF
static void vusb_wakeup(void) {
vusb_suspended = false;
suspend_wakeup_init();
# ifdef SLEEP_LED_ENABLE
sleep_led_disable();
# endif
}
#endif
/** \brief Setup USB
*
* FIXME: Needs doc
*/
static void setup_usb(void) {
initForUsbConnectivity();
}
uint16_t sof_timer = 0;
void protocol_setup(void) {
#if USB_COUNT_SOF
sof_timer = timer_read();
#endif
#ifdef CLKPR
// avoid unintentional changes of clock frequency in devices that have a
// clock prescaler
clock_prescale_set(clock_div_1);
#endif
}
void protocol_pre_init(void) {
setup_usb();
sei();
}
void protocol_post_init(void) {
host_set_driver(vusb_driver());
wait_ms(50);
}
void protocol_task(void) {
#if USB_COUNT_SOF
if (usbSofCount != 0) {
usbSofCount = 0;
sof_timer = timer_read();
if (vusb_suspended) {
vusb_wakeup();
}
} else {
// Suspend when no SOF in 3ms-10ms(7.1.7.4 Suspending of USB1.1)
if (!vusb_suspended && timer_elapsed(sof_timer) > 5) {
vusb_suspend();
}
}
#endif
if (vusb_suspended) {
vusb_suspend();
if (suspend_wakeup_condition()) {
vusb_send_remote_wakeup();
}
} else {
usbPoll();
// TODO: configuration process is inconsistent. it sometime fails.
// To prevent failing to configure NOT scan keyboard during configuration
if (usbConfiguration && usbInterruptIsReady()) {
keyboard_task();
}
#ifdef RAW_ENABLE
usbPoll();
if (usbConfiguration && usbInterruptIsReady4()) {
raw_hid_task();
}
#endif
#ifdef CONSOLE_ENABLE
usbPoll();
if (usbConfiguration && usbInterruptIsReady3()) {
console_task();
}
#endif
}
}
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