?? mainloop.c
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/////////////////////////////////////////////////////////////////////
//公司名稱：NSBIC
//模 塊 名：MAINLOOP
//創 建 者：CHENHU
//修 改 者：CHENHU
//功能描述：MAIN LOOP
//其他說明：
//版 本：V1.0
/////////////////////////////////////////////////////////////////////
#include <stdio.h>
#include <string.h>
#include <mainloop.h>
#include <reg51.h> /* special function register declarations */
#include "epphal.h"
#include "d12ci.h"
#include "mainloop.h"
#include "usb100.h"
#include "chap_9.h"
#include "protodma.h"
/*
//*************************************************************************
// USB protocol function pointer arrays
//*************************************************************************
*/
unsigned char code DateStr[]=__DATE__;
unsigned char code TimeStr[]=__TIME__;
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
};
code void (*VendorDeviceRequest[])(void) =
{
reserved,
reserved,
reserved,
reserved,
reserved,
reserved,
reserved,
reserved,
reserved,
reserved,
reserved,
reserved,
read_write_register,
reserved,
reserved,
reserved
};
/*
//*************************************************************************
// Public static data
//*************************************************************************
*/
extern EPPFLAGS bEPPflags;
extern unsigned long ClockTicks;
extern unsigned char idata GenEpBuf[];
extern unsigned char idata MainEpBuf[];
extern IO_REQUEST idata ioRequest;
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"
};
void help_devreq(unsigned char typ, unsigned char req)
{
typ >>= 5;
if(typ == USB_STANDARD_REQUEST)
{
printf("Request Type = %s, Request = %s.\n", _NAME_USB_REQUEST_TYPE[typ],
_NAME_USB_STANDARD_REQUEST[req]);
}
else
{
if(bEPPflags.bits.verbose)
printf("Request Type = %s, bRequest = 0x%bx.\n", _NAME_USB_REQUEST_TYPE[typ],
req);
}
}
/* 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;
EA = 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_special_interrupts(void)
{
IT0 = 0;
EX0 = 1;
PX0 = 0;
}
void init_port()
{
P0 = 0xFF;
P1 = 0xFF;
P2 = 0xFF;
}
/*Serial Port 12MHz 4800BPS*/
/*Mode = 1 /8-bit UART
Serial Port Interrupt = Disabled */
/*Receive = Enabled */
/*Auto Addressing = Disabled */
void init_serial(void)
{
SCON = 0X52;
PCON = 0X80 | PCON;
TMOD = 0X20;
TCON = 0x69; /* TCON */
TH1 = 0xF3;
}
void on_exit(void)
{
disconnect_USB();
}
void Flash(void)
{
//#define DEBUG
#ifdef DEBUG
unsigned char c;
printf("\n>>>> reciver from host data is:");
for(c = 0; c < 64; c ++)
printf("\nGenEpBuf[%bd]=0x%bx", c, MainEpBuf[c]);
#endif
}
void main(void)
{
#define DEBUG
BOOL in_loop = TRUE;
unsigned char idata key, i;
init_port();
init_serial();
init_timer0();
init_special_interrupts();
printf("\nDate is %s", DateStr);
printf("\t\t\t\tTime is %s\n", TimeStr);
printf("\nPDIUSBD12 evaluation board firmware V2.2.\n");
printf("Copyright (c) NSBIC 2006.\n");
reconnect_USB();
/* Main program loop */
while( in_loop )
{
if (bEPPflags.bits.timer)
{
DISABLE;
bEPPflags.bits.timer = 0;
ENABLE;
if(bEPPflags.bits.configuration)
check_key_LED();
}
if(RI)
{
key = _getkey();
switch(key)
{
case 0x1b: /* ESC */
break;
case 'r':
#ifdef DEBUG
printf("\nresume.");
#endif
D12_SendResume();
break;
case 'i':
if(bEPPflags.bits.control_state == USB_IDLE)
printf("Control state = USB_IDLE.");
else if(bEPPflags.bits.control_state == USB_RECEIVE)
printf("Control state = USB_RECEIVE.");
else if(bEPPflags.bits.control_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",
D12_ReadEndpointStatus(4), D12_ReadEndpointStatus(5));
if(bEPPflags.bits.dma_state == DMA_IDLE)
printf("DMA_State = DMA_IDLE.\n");
else if(bEPPflags.bits.dma_state == DMA_RUNNING)
printf("DMA_State = DMA_RUNNING.\n");
else if(bEPPflags.bits.dma_state == DMA_PENDING)
printf("DMA_State = DMA_PENDING.\n");
MCU_HOSTDACK = 1;
printf("CPLD counter read back = 0x%bx, 0x%bx.\n", inportb(CPLD_CNT0),
inportb(CPLD_CNT1));
MCU_HOSTDACK = 0;
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':
reconnect_USB();
break;
case 'v':
if(bEPPflags.bits.verbose == 0) {
printf("Verbose Mode = ON.\n");
DISABLE;
bEPPflags.bits.verbose = 1;
ENABLE;
}
else {
printf("Verbose Mode = OFF.\n");
DISABLE;
bEPPflags.bits.verbose = 0;
ENABLE;
}
break;
default:
break;
}
}
if (bEPPflags.bits.bus_reset)
{
DISABLE;
bEPPflags.bits.bus_reset = 0;
ENABLE;
printf("Bus reset!\n");
} // if bus reset
if (bEPPflags.bits.suspend)
{
DISABLE;
bEPPflags.bits.suspend= 0;
ENABLE;
suspend_change();
printf("Suspend change!\n");
} // if suspend change
if (bEPPflags.bits.setup_packet)
{
DISABLE;
bEPPflags.bits.setup_packet = 0;
ENABLE;
printf("\nstep 10:control handler... \t\t");
control_handler();
} // if setup_packet
if(bEPPflags.bits.setup_dma)
{
DISABLE;
bEPPflags.bits.setup_dma = 0;
ENABLE;
setup_dma();
} // if setup_dma
if(bEPPflags.bits.ep2_rxdone)
{
DISABLE;
Flash();
bEPPflags.bits.ep2_rxdone = 0;
ENABLE;
} // if setup_dma
} // Main Loop
on_exit();
}
void suspend_change(void)
{
}
void stall_ep0(void)
{
D12_SetEndpointStatus(0, 1);
D12_SetEndpointStatus(1, 1);
}
void disconnect_USB(void)
{
// Initialize D12 configuration
D12_SetMode(D12_NOLAZYCLOCK|D12_CLOCKRUNNING, D12_SETTOONE | D12_CLOCK_12M);
}
void connect_USB(void)
{
// reset event flags
DISABLE;
bEPPflags.value = 0;
ENABLE;
// V2.1 enable normal+sof interrupt
D12_SetDMA(D12_ENDP4INTENABLE | D12_ENDP5INTENABLE);
// Initialize D12 configuration
D12_SetMode(D12_NOLAZYCLOCK|D12_CLOCKRUNNING|D12_SOFTCONNECT, D12_SETTOONE | D12_CLOCK_24M);
}
void reconnect_USB(void)
{
unsigned long idata clk_cnt;
MCU_LED0 = 0;
MCU_LED1 = 0;
disconnect_USB();
printf("Wait for 1 second to connetct usb...\n");
clk_cnt = ClockTicks;
while(ClockTicks < clk_cnt + 20)
;
connect_USB();
MCU_LED0 = 1;
MCU_LED1 = 1;
}
void init_unconfig(void)
{
D12_SetEndpointEnable(0); /* Disable all endpoints but EPP0. */
}
void init_config(void)
{
D12_SetEndpointEnable(1); /* Enable generic/iso endpoints. */
}
void single_transmit(unsigned char * buf, unsigned char len)
{
if( len <= EP0_PACKET_SIZE) {
D12_WriteEndpoint(1, buf, len);
}
}
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, ControlData.pData, EP0_PACKET_SIZE);
ControlData.wCount += EP0_PACKET_SIZE;
DISABLE;
bEPPflags.bits.control_state = USB_TRANSMIT;
ENABLE;
}
else {
D12_WriteEndpoint(1, pRomData, ControlData.wLength);
ControlData.wCount += ControlData.wLength;
DISABLE;
bEPPflags.bits.control_state = USB_IDLE;
ENABLE;
}
}
void check_key_LED(void)
{
//#define DEBUG
static unsigned char c, last_key = 0xf;
c = MCU_SWM1 & MCU_SWM2;
c &= 0x0f;
if (c != last_key) { //Has any key was be press.
D12_WriteEndpoint(3, &c, 1);
}
last_key = c;
if(bEPPflags.bits.ep1_rxdone) {
DISABLE;
bEPPflags.bits.ep1_rxdone = 0;
ENABLE;
#ifdef DEBUG
printf("\n>>>> reciver from host data is:");
for(c = 0; c < 16; c ++)
printf("\nGenEpBuf[%bd]=0x%bx", c, GenEpBuf[c]);
#endif
MCU_LED0 = !(GenEpBuf[3] & 0x1);
MCU_LED1 = !(GenEpBuf[3] & 0x2);
}
}
void setup_dma()
{
bEPPflags.bits.dma_disable = 0; // V2.1
dma_start(&ioRequest);
DISABLE;
bEPPflags.bits.dma_state = DMA_RUNNING;
ENABLE;
single_transmit(0, 0);
if(ioRequest.bCommand & 0x1)
D12_SetDMA(D12_BURST_16 | D12_DMAENABLE | D12_DMA_INTOKEN);
else
D12_SetDMA(D12_BURST_16 | D12_DMAENABLE);
}
void control_handler()
{
unsigned char type, req;
type = ControlData.DeviceRequest.bmRequestType & USB_REQUEST_TYPE_MASK;
req = ControlData.DeviceRequest.bRequest & USB_REQUEST_MASK;
help_devreq(type, req); // print out device request
if (type == USB_STANDARD_REQUEST)
(*StandardDeviceRequest[req])();
else if (type == USB_VENDOR_REQUEST)
(*VendorDeviceRequest[req])();
else
{
printf("\n>>>>>stall endpoint 0.\n");
stall_ep0();
}
}
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