/* 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" #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(); } 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_init(); host_set_driver(vusb_driver()); debug("initForUsbConnectivity()\n"); initForUsbConnectivity(); debug("main loop\n"); while (1) { #if USB_COUNT_SOF if (usbSofCount != 0) { suspended = false; usbSofCount = 0; last_timer = timer_read(); } else { // Suspend when no SOF in 3ms-10ms(7.1.7.4 Suspending of USB1.1) if (timer_elapsed(last_timer) > 5) { suspended = true; /* 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(); } } }