📄 main.c
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/* Name: main.c * Project: AVR USB driver for CDC interface on Low-Speed USB * Author: Osamu Tamura * Creation Date: 2006-05-12 * Tabsize: 4 * Copyright: (c) 2006 by Recursion Co., Ltd. * License: Proprietary, free under certain conditions. See Documentation. *
* 2006-07-08 removed zero-sized receive block
* 2006-07-08 adapted to higher baud rate by T.Kitazawa
*
*/#include <avr/io.h>#include <avr/interrupt.h>#include <avr/pgmspace.h>#include <avr/wdt.h>#include <avr/iomx8.h>
#include <avr/signal.h>
#include "usbdrv.h"#include "oddebug.h"#include "uart.h"
//use PORTC and PORTB
#define SPORTC PORTC
#define SDDRC DDRC
#define SPINC PINC
#define SPORTB PORTB
#define SDDRB DDRB
#define SPINB PINB
#define DO 0x02
#define SS 0x01
#define DI 0x10
#define SCK 0x20
#define STAT1 0x02
#define STAT2 0x01
extern uchar Cmd;
extern uchar m_tmpbuffer[64];
extern uchar *m_buffer;
extern uchar flag1;
extern uchar Dflag;
uchar DI_status;
uchar spidat;
uchar Tflag;
uchar lenth=0;
uchar j=0;
uchar k=0;enum { SEND_ENCAPSULATED_COMMAND = 0, GET_ENCAPSULATED_RESPONSE, SET_COMM_FEATURE, GET_COMM_FEATURE, CLEAR_COMM_FEATURE, SET_LINE_CODING = 0x20, GET_LINE_CODING, SET_CONTROL_LINE_STATE, SEND_BREAK};char usbDescrConfig[] PROGMEM = { /* USB configuration descriptor */ 9, /* sizeof(usbDescrConfig): length of descriptor in bytes */ USBDESCR_CONFIG, /* descriptor type */ USB_CFG_EXTERNAL_CONFIG_DESCRIPTOR_LENGH, 0, /* total length of data returned (including inlined descriptors) */ 2, /* number of interfaces in this configuration */ 1, /* index of this configuration */ 0, /* configuration name string index */#if USB_CFG_IS_SELF_POWERED USBATTR_SELFPOWER, /* attributes */#else USBATTR_BUSPOWER, /* attributes */#endif USB_CFG_MAX_BUS_POWER/2, /* max USB current in 2mA units */ /* interface descriptor follows inline: */ 9, /* sizeof(usbDescrInterface): length of descriptor in bytes */ USBDESCR_INTERFACE, /* descriptor type */ 0, /* index of this interface */ 0, /* alternate setting for this interface */ USB_CFG_HAVE_INTRIN_ENDPOINT, /* endpoints excl 0: number of endpoint descriptors to follow */ USB_CFG_INTERFACE_CLASS, USB_CFG_INTERFACE_SUBCLASS, USB_CFG_INTERFACE_PROTOCOL, 0, /* string index for interface */ /* CDC Class-Specific descriptor */ 5, /* sizeof(usbDescrCDC_HeaderFn): length of descriptor in bytes */ 0x24, /* descriptor type */ 0, /* header functional descriptor */ 0x10, 0x01, 4, /* sizeof(usbDescrCDC_AcmFn): length of descriptor in bytes */ 0x24, /* descriptor type */ 2, /* abstract control management functional descriptor */ 0x02, /* SET_LINE_CODING, GET_LINE_CODING, SET_CONTROL_LINE_STATE */ 5, /* sizeof(usbDescrCDC_UnionFn): length of descriptor in bytes */ 0x24, /* descriptor type */ 6, /* union functional descriptor */ 0, /* CDC_COMM_INTF_ID */ 1, /* CDC_DATA_INTF_ID */ 5, /* sizeof(usbDescrCDC_CallMgtFn): length of descriptor in bytes */ 0x24, /* descriptor type */ 1, /* call management functional descriptor */ 3, /* allow management on data interface, handles call management by itself */ 1, /* CDC_DATA_INTF_ID */ /* Endpoint Descriptor */ 7, /* sizeof(usbDescrEndpoint) */ USBDESCR_ENDPOINT, /* descriptor type = endpoint */ 0x83, /* IN endpoint number 3 */ 0x03, /* attrib: Interrupt endpoint */ 8, 0, /* maximum packet size */ 100, /* in ms */ /* Interface Descriptor */ 9, /* sizeof(usbDescrInterface): length of descriptor in bytes */ 4, /* descriptor type */ 1, /* index of this interface */ 0, /* alternate setting for this interface */ 2, /* endpoints excl 0: number of endpoint descriptors to follow */ 0x0A, /* Data Interface Class Codes */ 0, 0, /* Data Interface Class Protocol Codes */ 0, /* string index for interface */ /* Endpoint Descriptor */ 7, /* sizeof(usbDescrEndpoint) */ USBDESCR_ENDPOINT, /* descriptor type = endpoint */ 0x01, /* OUT endpoint number 1 */ 0x02, /* attrib: Bulk endpoint */ 8, 0, /* maximum packet size */ 0, /* in ms */ /* Endpoint Descriptor */ 7, /* sizeof(usbDescrEndpoint) */ USBDESCR_ENDPOINT, /* descriptor type = endpoint */ 0x81, /* IN endpoint number 1 */ 0x02, /* attrib: Bulk endpoint */ 8, 0, /* maximum packet size */ 0, /* in ms */};static uchar intr3Status; /* used to control interrupt endpoint transmissions *//* ------------------------------------------------------------------------- *//* ----------------------------- USB interface ----------------------------- *//* ------------------------------------------------------------------------- */uchar usbFunctionSetup(uchar data[8]){usbRequest_t *rq = (void *)data; if((rq->bmRequestType & USBRQ_TYPE_MASK) == USBRQ_TYPE_CLASS){ /* class request type */ if( rq->bRequest==GET_LINE_CODING || rq->bRequest==SET_LINE_CODING ){ return 0xff; /* GET_LINE_CODING -> usbFunctionRead() */ /* SET_LINE_CODING -> usbFunctionWrite() */ } if(rq->bRequest == SET_CONTROL_LINE_STATE){ /* Report serial state (carrier detect). On several Unix platforms, * tty devices can only be opened when carrier detect is set. */ intr3Status = 2; } } return 0;}/*---------------------------------------------------------------------------*//* usbFunctionRead *//*---------------------------------------------------------------------------*/uchar usbFunctionRead( uchar *data, uchar len ){// data[0] = baud.bytes[0];// data[1] = baud.bytes[1];// data[2] = baud.bytes[2];
// data[3] = baud.bytes[3];
// data[4] = stopbit;// data[5] = parity;// data[6] = databit; return 7;}/*---------------------------------------------------------------------------*//* usbFunctionWrite *//*---------------------------------------------------------------------------*/uchar usbFunctionWrite( uchar *data, uchar len ){ /* SET_LINE_CODING */// baud.bytes[0] = data[0];// baud.bytes[1] = data[1];// baud.bytes[2] = data[2];
// baud.bytes[3] = data[3];
//#if USB_CFG_HAVE_USART// stopbit = data[4];// parity = data[5];// databit = data[6];// if( parity>2 )// parity = 0;// if( stopbit==1 )// stopbit = 0;//#endif// resetUart(); return 1;}void usbFunctionWriteOut( uchar *data, uchar len ){ /* usb -> rs232c: transmit char */ //usbDisableAllRequests();// for( ; len; len-- ) {// uartTxBufAppend(*data++);// }}static void hardwareInit(void){uchar i, j; /* activate pull-ups except on USB lines */ USB_CFG_IOPORT = (uchar)~((1<<USB_CFG_DMINUS_BIT)|(1<<USB_CFG_DPLUS_BIT)|1<<2); //PORTD2=INT0 /* all pins input except USB (-> USB reset) */#ifdef USB_CFG_PULLUP_IOPORT /* use usbDeviceConnect()/usbDeviceDisconnect() if available */ USBDDR = 0; /* we do RESET by deactivating pullup */ usbDeviceDisconnect();#else USBDDR = (1<<USB_CFG_DMINUS_BIT)|(1<<USB_CFG_DPLUS_BIT);#endif j = 0; while(--j){ /* USB Reset by device only required on Watchdog Reset */ i = 0; while(--i); /* delay >10ms for USB reset */ }#ifdef USB_CFG_PULLUP_IOPORT usbDeviceConnect();#else USBDDR = 0; /* remove USB reset condition */#endif
/* USART configuration */}
#define DO_H SPORTC|=DO // MOSI out 1
#define DO_L SPORTC&=~DO //MOSI out 0
#define SS_H SPORTC|=SS //SS out 1
#define SS_L SPORTC&=~SS //SS out 0
#define SCK_H SPORTB|=SCK //SCK out 1
#define SCK_L SPORTB&=~SCK //SCK out 0
void delay (void)
{
uchar k;
for(k=0;k<20;k++)
{
}
}
uchar DI_IN() //DI status
{
uchar tmp=0;
SCK_H;
//delay();
if((SPINB&DI)==0x10)
tmp=0x01;
else
tmp=0;
SCK_L;
//delay();
return tmp;
}
// send a byte
void send_spi(uchar dat)
{
uchar i,dat1;
for(i=0;i<8;i++)
{
dat1=dat;
if((dat1&0x80)==0x80)
{
DO_H;
SCK_H;
delay();
SCK_L;
delay();
}
else
{
DO_L;
SCK_H;
delay();
SCK_L;
delay();
}
dat=dat<<1;
}
}
rev_spi() //recive 1 byte
{
uchar i,rev;
spidat=0;
for(i=0;i<7;i++)
{
rev=DI_IN();
if(rev) spidat|=0x01;
spidat=spidat<<1;
}
rev=DI_IN();
if(rev) spidat|=0x01;
}
//#pragma interrupt_handler timer1_isr:0x0D
SIGNAL(SIG_OVERFLOW1)
{
TCCR1B=0; //close timer1
Tflag=0;
}
void init_timer1(void)
{
TCNT1H=0xFE;
TCNT1L=0xC2; //27ms
TIMSK1=0x01;
SREG|=0x80;
}
/*
void init_timer2(void)
{
TCNT1H=0xFF;
TCNT1L=0x87; //10ms
TIMSK1=0x01;
SREG|=0x80;
}
*/
int main(void){ //uchar bytesRead, *data;
uchar temp,temp1,temp2;
unsigned long tm1;
Cmd=0;
DI_status=DI_IN();
Dflag=0;
temp=DI_status;
temp2=DI_status;
SDDRC|=(SS+DO); //SS/DO= out
SDDRB|=SCK; //SCK=out
SDDRB&=~(DI+STAT1+STAT2); //DI/STAT1/STAT2=in
//mode 0
SPORTC|=SS; //ss out=1
SPORTB&=~SCK; //SCK out=0
SPORTB|=(DI+STAT1+STAT2); //DI pull_up
wdt_enable(WDTO_1S); hardwareInit();
usbInit();
sei(); usbSetInterrupt(0, 0); /* the host eats the first packet -- don't know why... */
for(;;){ /* main event loop */ wdt_reset(); usbPoll();
//-------------CHECK DI----
temp2=DI_IN();
temp=DI_status;
if(temp2!=temp)
{
tm1=0x000fffff;
//Tflag=1;
//init_timer1(); //init timer1
//TCCR1B=0x05; //open tiner1 delay 10ms
//temp=Tflag;
/*
while(1)
{
if(temp==0) break;
//temp=Tflag;
}*/
do
{
tm1--;
}while(tm1!=0);
//TCCR1B=0;
temp=DI_IN(); //delay DI is chang
if(temp2==temp) DI_status=DI_IN();
}
//--------------------------
//send SPI data
if(Cmd==1) //has CMD SEND SPI data
{
Cmd=0; //clear CMD_flg
lenth=0;
temp=0;
//STATUT is High redeay recive
temp=SPINB&STAT1;
if(temp==0x02) //STAT1=H,send data to RF_Model
{
for(j=0;j<6;j++)
{
if(m_tmpbuffer[j]!=0xb3) break;
}
temp=m_tmpbuffer[j]; //length
temp1=~(m_tmpbuffer[j+1]); //~Length
if(temp==temp1)
{
//----------------------
if(m_tmpbuffer[j+2]==0x05)
{
Dflag=1; //get DI_Statuts
m_buffer=m_tmpbuffer;
*(m_buffer+6)=DI_status;
}
else
//-----------------------------------
{
lenth=temp+5;
SS_L; //SS ready
delay();
m_buffer=m_tmpbuffer;
for(j=0;j<lenth;j++)
{
temp=*m_buffer++ ;
send_spi(temp);
}
}
}
}
if(Dflag!=1)
//wait recive RF_Model data STAT=L recive SPI_DATA
{
flag1=0; //when recevie RF data USB return 0 pack
init_timer1(); //init timer1
Tflag=1;
TCCR1B=0x05; //open timer1
while(Tflag==1)
{
if((SPINB&STAT1)==0x0)
{
TCCR1B=0; //close timer1
Tflag=0;
m_buffer=m_tmpbuffer;
while((SPINB&STAT1)==0)
{
rev_spi();
*m_buffer++=spidat;
}
flag1=1;
}
}
SS_H;
}
}
//--------------------------
} return 0;}⌨️ 快捷键说明
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