__main.c

C语言版的USB单片机固件源代码

//===================================================================//
//     Project Name : ZBoard
//      Module Name : Master Firmware Program
//     Product Type : License
//      OS/Dev Tool : AT89C52, uVision 2
//  Original Author : Ray Yang
//     Organization : YBWork.com
//    Original Date : July, 25, 2001
//             Addr : Room 402, No. 131, Meilong No. 9
//              TEL : [phone]
//            EMail : [e-mail]
//          Website : http://www.ybwork.com
//		  Copyright : Copyright (L) YBWork.com, 2001
//         Comments : 
//                    
//					<< History >> 
//					July, 25, 2001		The first release
//===================================================================//


#include "HAL.H"
#include "USBD12.H"
#include "ZBoard.h"
#include "USB110.H"
#include "USB.H"
#include "CHAP9.H"
#include "VDOR.H"
#include "FLASH.H"

#ifdef MONITOR51                         /* Debugging with Monitor-51 needs   */
char code reserve [3] _at_ 0x23;         /* space for serial interrupt if     */
#endif                                   /* Stop Exection with Serial Intr.   */
                                         /* is enabled                        */
extern unsigned char idata GenBuf[GENBUF_LENGH];

///////////////////////////////////
// Data definition
ZBOARDFLAGS bdata bZBoardFlags;
extern CONTROL_XFER ControlData;
extern CODE_DATA idata CodeData;

///////////////////////////////////
/////////////////////////////////////////////////
// Useless function for disable Warning L16
/////////////////////////////////////////////////

/* Configure Timer 0
   - Mode                  = 1
   - Interrupt                   = ENABLED
   - Clock Source                = INTERNAL
   - Enable Gating Control    = DISABLED
*/
void Init_Timer0(void)
{
	TMOD &= 0xF0;                    /* clear Timer 0   */
	TMOD  |= 0x1;
	TL0 = 0x0;                   /* value set by user    */
	TH0 = 0x0;                  /* value set by user  */
	ET0 = 1;        /* IE.1*/
	TR0 = 1;                /* TCON.4 start timer  */
//	PT0 = 1;
}

/* Interrupt Control Unit */
/*   ****  Enabled interrupts in Interrupt Enable Register ****
	 ****  GLOBAL INTERRUPT MUST BE ENABLED FOR ANY OTHER
	 ****  INTERRUPT TO WORK!
*/
/*                  GLOBAL INTERRUPT DISABLED ALL INTERRUPTS
					ARE DISABLED          */
/*                    External interrupt 0      */
/*                        Priority Level = 0    */
/*                        Timer 0 interrupt     */
/*                       Priority Level = 0     */
void Init_SpecialInterrupts(void)
{
	IT0 = 0;
	EX0 = 1;
//	PX0 = 0;
}

void Init_Port()
{
	P0 = 0xFF;
	P1 = 0xFF;
	P2 = 0xFF;
	P3 = 0xFF;
}

/*Serial Port */
/*Mode            = 1  /8-bit UART
  Serial Port Interrupt    = Disabled         */
/*Receive         = Enabled   */
/*Auto Addressing    = Disabled   */
void Init_COMM(void)
{
	SCON = 0x52;
	PCON = 0x80 | PCON;
	TMOD = 0x21;
//	TCON = 0x69;    /* TCON */
	TH1 = 0xfa;		// 9600bps @ 11.0592MHz
	TR1 = 1;
	ES = 1;
}

/*------------------------------------------------
The main C function.  Program execution starts
here after stack initialization.
------------------------------------------------*/
void main (void)
{
#ifdef _DEBUG
	unsigned char key;
	unsigned short i;
#endif
/*------------------------------------------------
Setup the serial port for 1200 baud at 16MHz.
These codes are used for MON51
------------------------------------------------*/
#ifndef MONITOR51
//	SCON  = 0x50;		        /* SCON: mode 1, 8-bit UART, enable rcvr      */
//	TMOD |= 0x20;               /* TMOD: timer 1, mode 2, 8-bit reload        */
//	TH1   = 221;                /* TH1:  reload value for 1200 baud @ 16MHz   */
//	TR1   = 1;                  /* TR1:  timer 1 run                          */
//	TI    = 1;                  /* TI:   set TI to send first char of UART    */
#endif
	
	Init_Timer0();
	Init_SpecialInterrupts();
	Init_Port();
	Init_COMM();


	IO_LED = 0;
	bZBoardFlags.bits.bLED = LED_ON;

	USB_Reconnect();
#ifdef _DEBUG
	printf("\n\nZBoard USB Master Program Ver 0.01. Written by Ray Yang. [e-mail]\n");
	printf("Waiting for interrupt event...\n");
#endif

	ENABLE_INTERRUPTS;
	EX0 = 1;


/*------------------------------------------------
Note that an embedded program never exits (because
there is no operating system to return to).  It
must loop and execute forever.
------------------------------------------------*/
	/* Main program loop */

	while(TRUE)
	{

#ifdef _DEBUG
		if(RI)
		{
			key = _getkey();
			switch(key)
			{
				case 'i':
					if(bZBoardFlags.bits.bControl_State == USB_IDLE)
						printf("Control state = USB_IDLE.");
					else if(bZBoardFlags.bits.bControl_State == USB_RECEIVE)
						printf("Control state = USB_RECEIVE.");
					else if(bZBoardFlags.bits.bControl_State == USB_TRANSMIT)
						printf("Control state = USB_TRANSMIT.");
					printf(" ControlData.wCount = %x.\n", ControlData.wCount);
					printf("Endpoint 4 (Bulk Out) Status = %bx, Endpoint 5 (Bulk In) Status = %bx.\n",
						USBD12_ReadEndpointStatus(4), USBD12_ReadEndpointStatus(5));
					if(bZBoardFlags.bits.bDMA_State == DMA_IDLE)
						printf("DMA_State = DMA_IDLE.\n");
					else if(bZBoardFlags.bits.bDMA_State == DMA_RUNNING)
						printf("DMA_State = DMA_RUNNING.\n");
					else if(bZBoardFlags.bits.bDMA_State == DMA_PENDING)
						printf("DMA_State = DMA_PENDING.\n");

					printf("Last Device Request: bmRequestType = 0x%bx, bRequest= 0x%bx, wValue = 0x%x, wLength = 0x%x, wIndex = 0x%x.\n",

						ControlData.DeviceRequest.bmRequestType,
						ControlData.DeviceRequest.bRequest,
						ControlData.DeviceRequest.wValue,
						ControlData.DeviceRequest.wLength,
						ControlData.DeviceRequest.wIndex);

					printf("Data: ");
					for(i = 0; i < ControlData.DeviceRequest.wLength; i ++)
						printf("0x%bx, ", *((ControlData.dataBuffer)+i));
					printf("\n");

					break;
				case '\r':
					USB_Reconnect();
					break;

				case 'v':
					if(bZBoardFlags.bits.bVerbose == 0)
					{
						printf("Verbose Mode = ON.\n");
						DISABLE_INTERRUPTS;
						bZBoardFlags.bits.bVerbose = 1;
						ENABLE_INTERRUPTS;
					}
					else
					{
						printf("Verbose Mode = OFF.\n");
						DISABLE_INTERRUPTS;
						bZBoardFlags.bits.bVerbose = 0;
						ENABLE_INTERRUPTS;
					}
					break;
				case 'l':
					IO_LED ^= 1;
					break;
				default:
					break;
			}
		}
#endif

		if (bZBoardFlags.bits.bBus_Reset)
		{
			DISABLE_INTERRUPTS;
			bZBoardFlags.bits.bBus_Reset = 0;
			ENABLE_INTERRUPTS;
			// Release D12's SUSPEND pin after bus reset
			D12SUSPD = 1;
		} // if bus reset

		if (bZBoardFlags.bits.bSuspend)
		{
			DISABLE_INTERRUPTS;
			bZBoardFlags.bits.bSuspend= 0;
			ENABLE_INTERRUPTS;

		} // if suspend change

		if (bZBoardFlags.bits.bSetup_Packet)
		{
			DISABLE_INTERRUPTS;
			bZBoardFlags.bits.bSetup_Packet = 0;
			ENABLE_INTERRUPTS;
			USB_Control_Handler();
			D12SUSPD = 1;
		} // if setup_packet

	} // Main Loop

}