M:/USB-BDI/USB-BDI/Firmware/MPC555-USB-BDI/src/usbpdi_main.c

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/*      USB-BDI Used for programming and debugging a MPC555 over USB
 * 
 *  Copyright 2005 NTB Interstate University of Applied Sciences of Technology Buchs
 *
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 */

#include "usb_common.h"
#include "usbpdi_common.h"
#include "usbpdi_main.h"
#include "BDI_555.h"
#include "UART.h"
#include "fx2regs.h"
#include "usbpdi_regs.h"
#include "timer.h"
#include "isr.h"
#include "fx2utils.h"
#include "virtual_com_port.h"

volatile unsigned char timer_count = 0;

#ifdef DEBUG_ON
void write(unsigned char digit)
{
        IOA = digit;
}
#endif

void toggleLED()
{
    if (timer_count > STATUS_LED_COUNT_LIMIT) {
                timer_count = 0;
                STATUS_LED1 = !STATUS_LED1;
    }
}

void update_speed_led(void){
        //only highspeed available
        if(_usb_highspeed_granted){
                STATUS_LED2 = 1;
        }

}


static void isr_tick(void) __interrupt{
        EA = 0;
    if (exceptionOnTimeout) {
        exceptionCount++;
        if (exceptionCount > EXCEPTION_COUNT) {
                exceptionOnTimeout = FALSE;
                        usbInBuffer[0] = PACKET_HEADER;         // header
                        usbInBuffer[1] = MTYPE_BDI_555;         // type field
                        usbInBuffer[2] = STYPE_BDI_ERROR_TIMEOUT;
                        usbInBuffer[3] = 0;                             // length
                        usbInBuffer[4] = 0;
                        usbInBuffer[PACKET_DATA_OFFSET] = PACKET_END;   // packet end
                        EP6BCH = 0;
                        SYNCDELAY;
                        EP6BCL = PACKET_MIN_LENGTH;  // arm EP6IN
                        SYNCDELAY;
                        inBufIndex = 0; // reset inBufIndex
                }
        } 
        timer_count++;

    clear_timer_irq();
    EA = 1;
}

void main(void) {

        EA = 0;                     //disable all interrupts

        initCPU();
        initIOPorts();

        initEndpoint0();

        initTP3465();
        initUART();
        setup_autovectors();
    usb_install_handlers();
    hook_timer_tick((unsigned short) isr_tick);

    update_speed_led();
        initBDI();
        initVirtualComPort();
        EA = 1;                                 // global interrupt enable

        while (1) {
                handelSetupPackages();
                handelBDIPackages();
                handelVirtualComPortPackages();
                toggleLED();
        }
}