mainloop.c

烧录器的上位机控制程序代码,和下位机程序代码,包括USB通讯固件

#include "define.h"
#include "epphal.h"
#include "d12ci.h"
#include "mainloop.h"
#include "usb100.h"
#include "chap_9.h"
#include "protodma.h"
#include "otp.h"


/*
//*************************************************************************
// USB protocol function pointer arrays
//*************************************************************************
*/

//USB标准请求
code void (*StandardDeviceRequest[])(void) =
{
	get_status,
	clear_feature,
	reserved,
	set_feature,
	reserved,
	set_address,
	get_descriptor,
	reserved,
	get_configuration,
	set_configuration,
	get_interface,
	set_interface,
	reserved,
	reserved,
	reserved,
	reserved
};

/*
//*************************************************************************
//  Public static data
//*************************************************************************
*/

extern EPPFLAGS bEPPflags;
bit _want_connect=1;
CONTROL_XFER ControlData;


code char * _NAME_USB_REQUEST_DIRECTION[] =
{
"Host_to_device",
"Device_to_host"
};

code char * _NAME_USB_REQUEST_RECIPIENT[] =
{
"Device",
"Interface",
"Endpoint(0)",
"Other"
};

code char * _NAME_USB_REQUEST_TYPE[] =
{
"Standard",
"Class",
"Vendor",
"Reserved"
};

code char * _NAME_USB_STANDARD_REQUEST[] =
{
"GET_STATUS",
"CLEAR_FEATURE",
"RESERVED",
"SET_FEATURE",
"RESERVED",
"SET_ADDRESS",
"GET_DESCRIPTOR",
"SET_DESCRIPTOR",
"GET_CONFIGURATION",
"SET_CONFIGURATION",
"GET_INTERFACE",
"SET_INTERFACE",
"SYNC_FRAME"
};

/* 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     */
//中断设置
void init_special_interrupts(void)
{
	IT0 = 0;
	EX0 = 1;
	PX0 = 0;
}

 void InitialUart(unsigned int baudrate)	
{
	SCON=0X50;
	TMOD=0X21;
	TH1=TL1=256-(28800*2/baudrate);
	TR1=1;
	ET1=0;
	ES=0;
}



void main(void)
{
    DelayNms(200);
    bEPPflags.bits.configuration = 0;
    init_sub();
    initial_timer0();
	InitialUart(19200);	   //???test
    init_special_interrupts();//设置中断
    buzzer_1();
    reconnect_USB();//重新连接USB
    
	while( TRUE )
	{	
		//===============================	自动检测USB设备	
		P3_2=1;
		if (P3_2)
		{
			if (!bEPPflags.bits.configuration)
			{
				if (_want_connect)
				{
					_want_connect=0;
					reconnect_USB();//重新连接USB
				}			
			}
			IT0=1;
		}
		else
		{
			IT0=0;
		}
		//==================================
		
        check_buttton();
		
		if (bEPPflags.bits.setup_packet){//Setup包处理
			DISABLE;
			bEPPflags.bits.setup_packet = 0;
			ENABLE;
			control_handler();//调用请求处理子程序
			//	D12SUSPD = 1;
		} // if setup_packet
	} // Main Loop
}

//返回stall应答
void stall_ep0(void)
{
	D12_SetEndpointStatus(0, 1);
	D12_SetEndpointStatus(1, 1);
}

//断开USB总线
void disconnect_USB(void)
{
	// Initialize D12 configuration
	D12_SetMode(D12_NOLAZYCLOCK, D12_SETTOONE | D12_CLOCK_12M);
}

//连接USB总线
void connect_USB(void)
{

	// V2.1 enable normal+sof interrupt
	D12_SetDMA(D12_ENDP4INTENABLE | D12_ENDP5INTENABLE);

	// Initialize D12 configuration
	D12_SetMode(D12_NOLAZYCLOCK|D12_SOFTCONNECT, D12_SETTOONE | D12_CLOCK_12M);
}

//重新连接到USB总线
void reconnect_USB(void)
{
	disconnect_USB();
//	printf("Wait for 1 second ...\n");
    
	connect_USB();
}

//恢复到未配置状态
void init_unconfig(void)
{
//	unsigned char i;

	D12_SetEndpointEnable(0);	/* Disable all endpoints but EPP0. */
}

//设置配置状态
void init_config(void)
{
	D12_SetEndpointEnable(1);	/* Enable  generic/iso endpoints. */
}

//从端点号1发送数据
void single_transmit(unsigned char * buf, unsigned char len)
{
	if( len <= EP0_PACKET_SIZE) {
		D12_WriteEndpoint(1, len, buf);
	}
}

//发送端点号1建立代码
void code_transmit(unsigned char code * pRomData, unsigned short len)
{
	ControlData.wCount = 0;
	if(ControlData.wLength > len)
		ControlData.wLength = len;

	ControlData.pData = pRomData;
	if( ControlData.wLength >= EP0_PACKET_SIZE) {
		D12_WriteEndpoint(1, EP0_PACKET_SIZE, ControlData.pData);//发送16字节数据
		ControlData.wCount += EP0_PACKET_SIZE;
		DISABLE;
		bEPPflags.bits.control_state = USB_TRANSMIT;
		ENABLE;
	}
	else {
		D12_WriteEndpoint(1, ControlData.wLength, pRomData);//发送16字节内数据
		ControlData.wCount += ControlData.wLength;
		DISABLE;
		bEPPflags.bits.control_state = USB_IDLE;
		ENABLE;
	}
}
//请求处理子程序
void control_handler()
{
	unsigned char type, req;

	type = ControlData.DeviceRequest.bmRequestType & USB_REQUEST_TYPE_MASK;
	req = ControlData.DeviceRequest.bRequest & USB_REQUEST_MASK;

	if (type == USB_STANDARD_REQUEST)
		(*StandardDeviceRequest[req])();//调用标准请求
	else
		stall_ep0();
}