文件名称:
USB atmeg8 ISP_源码.rar
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文件大小: 746kb
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上传时间: 2010-02-22
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USB atmeg8 ISP_源码.rar /* Name: main.c * Project: AVR-Doper * Author: Christian Starkjohann * Creation Date: 2006-06-21 * Tabsize: 4 * Copyright: (c) 2006 by Christian Starkjohann, all rights reserved. * License: Proprietary, see documentation. * Revision: $Id: main.c 223 2006-07-18 09:28:13Z cs $ */ /* General Description: 本模块实现硬件初始化和USB接口 */ #include "hardware.h" #include #include #include #include #include #include #include #include "utils.h" #include "usbdrv.h" #include "oddebug.h" #include "stk500protocol.h" #include "vreg.h" #include "serial.h" /* ------------------------------------------------------------------------- */ extern unsigned char eeprom_sckDuration; extern void timerMsDelay(unsigned char ms); extern unsigned char sckDuration; /*---------- CDC class requests: --------------*/ 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 }; /* defines for 'requestType' */ #define REQUEST_TYPE_LINE_CODING 0 /* CDC GET/SET_LINE_CODING */ #define REQUEST_TYPE_HID_FIRST 1 /* first block of HID reporting */ #define REQUEST_TYPE_HID_SUBSEQUENT 2 /* subsequent block of HID reporting */ #define REQUEST_TYPE_HID_DEBUGDATA 3 /* read/write data from/to debug interface */ #define REQUEST_TYPE_VENDOR 4 /* vendor request for get/set debug data */ /* ------------------------------------------------------------------------- */ #if ENABLE_CDC_INTERFACE static uchar modeBuffer[7] = {0x80, 0x25, 0, 0, 0, 0, 8}; /* default: 9600 bps, 8n1 */ #endif static uchar requestType; #if ENABLE_CDC_INTERFACE static PROGMEM char deviceDescrCDC[] = { /* USB 设备描述符 */ 18, /* sizeof(usbDescriptorDevice): 描述符长度 */ USBDESCR_DEVICE, /* 描述答类型 */ 0x01, 0x01, /* USB 版本 */ 0x02, /* 设备类型: CDC */ 0, /* 子类型 */ 0, /* 协议 */ 8, /* 最大包长 */ USB_CFG_VENDOR_ID, /* 2 bytes */ 0xe1, 0x05, /* 2 bytes: shared PID for CDC-ACM devices */ USB_CFG_DEVICE_VERSION, /* 2 bytes */ 1, /* 制造商字符串 index */ 2, /* 生产字符串 index */ 0, /* 序列号字符串 index */ 1, /* 配置字数量 */ }; static PROGMEM char configDescrCDC[] = { /* USB 配置描述符 */ 9, /* sizeof(usbDescriptorConfiguration): 描述符长度 */ USBDESCR_CONFIG, /* 描述答类型 */ 67, 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 descriptors follow inline: */ /* Interface Descriptor for CDC-ACM Control */ 9, /* sizeof(usbDescrInterface): length of descriptor in bytes */ USBDESCR_INTERFACE, /* descriptor type */ 0, /* index of this interface */ 0, /* alternate setting for this interface */ 1, /* endpoints excl 0: number of endpoint descriptors to follow */ USB_CFG_INTERFACE_CLASS, /* see usbconfig.h */ USB_CFG_INTERFACE_SUBCLASS, USB_CFG_INTERFACE_PROTOCOL, 0, /* string index for interface */ /* CDC Class-Specific descriptors */ 5, /* sizeof(usbDescrCDC_HeaderFn): length of descriptor in bytes */ 0x24, /* descriptor type */ 0, /* Subtype: header functional descriptor */ 0x10, 0x01, /* CDC spec release number in BCD */ 4, /* sizeof(usbDescrCDC_AcmFn): length of descriptor in bytes */ 0x24, /* descriptor type */ 2, /* Subtype: abstract control management functional descriptor */ 0x02, /* capabilities: SET_LINE_CODING, GET_LINE_CODING, SET_CONTROL_LINE_STATE */ 5, /* sizeof(usbDescrCDC_UnionFn): length of descriptor in bytes */ 0x24, /* descriptor type */ 6, /* Subtype: union functional descriptor */ 0, /* CDC_COMM_INTF_ID: master interface (control) */ 1, /* CDC_DATA_INTF_ID: slave interface (data) */ 5, /* sizeof(usbDescrCDC_CallMgtFn): length of descriptor in bytes */ 0x24, /* descriptor type */ 1, /* Subtype: call management functional descriptor */ 0x03, /* capabilities: allows management on data interface, handles call management by itself */ 1, /* CDC_DATA_INTF_ID: interface used for call management */ /* 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 for CDC-ACM Data */ 9, /* sizeof(usbDescrInterface): length of descriptor in bytes */ USBDESCR_INTERFACE, /* 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, /* interface subclass */ 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 */ }; #endif /* ENABLE_CDC_INTERFACE */ /* ------------------------------------------------------------------------- */ uchar usbFunctionDescriptor(usbRequest_t *rq) { uchar *p = NULL, len = 0 ; #if ENABLE_CDC_INTERFACE if(rq->wValue.bytes[1] == USBDESCR_DEVICE){ p = (uchar *)deviceDescrCDC; len = sizeof(deviceDescrCDC); }else{ /* must be config descriptor */ p = (uchar *)configDescrCDC; len = sizeof(configDescrCDC); } #endif usbMsgPtr = p; return len; } /* ------------------------------------------------------------------------- */ /* ----------------------------- USB interface ----------------------------- */ /* ------------------------------------------------------------------------- */ uchar usbFunctionSetup(uchar data[8]) { usbRequest_t *rq = (void *)data; uchar rqType = rq->bmRequestType & USBRQ_TYPE_MASK; if(rqType == USBRQ_TYPE_CLASS) { /* class request type */ #if ENABLE_CDC_INTERFACE if(rq->bRequest == GET_LINE_CODING || rq->bRequest == SET_LINE_CODING){ requestType = REQUEST_TYPE_LINE_CODING; return 0xff; } #endif } return 0; } uchar usbFunctionRead(uchar *data, uchar len) { if(requestType == REQUEST_TYPE_LINE_CODING) { #if ENABLE_CDC_INTERFACE /* return the "virtual" configuration */ memcpy(data, modeBuffer, 7); return 7; #endif } return 0; /* error -> terminate transfer */ } uchar usbFunctionWrite(uchar *data, uchar len) { if(requestType == REQUEST_TYPE_LINE_CODING) { #if ENABLE_CDC_INTERFACE /* Don't know why data toggling is reset when line coding is changed, but it is... */ usbTxPacketCnt1 = 1; /* enforce DATA0 token for next transfer */ /* store the line configuration so that we can return it on request */ memcpy(modeBuffer, data, 7); return 1; #endif } return 1; /* error -> accept everything until end */ } void usbFunctionWriteOut(uchar *data, uchar len) { #if ENABLE_CDC_INTERFACE do{ /* len must be at least 1 character, the driver discards zero sized packets */ stkSetRxChar(*data++); }while(--len); #endif } /* ------------------------------------------------------------------------- */ /* ------------------------------------------------------------------------- */ /* ------------------------------------------------------------------------- */ /*********************************************************** 20 脚 HVSP / PP 连接器: 1 .... GND 2 .... Vtarget 3 .... HVSP SCI 4 .... RESET 16 ... HVSP SDO 18 ... HVSP SII 20 ... HVSP SDI * Timer 用途: * Timer 0 [8 bit]: * 1/64 prescaler for timer interrupt * Timer 1 [16 bit]: * PWM 用于高压产生 -> fastPWM mode * f = 23.4 kHz -> prescaler = 1, 9 bit * Timer 2 [8 bit]: * 为目标板提供时钟 **************************************************************/ static void hardwareInit(void) { unsigned char i, j; //------------------------------------------------------------------------------------- // SCK MISO MOSI ISP_RST SMPS_OUT HVSP_SUPPLY PORTB= 0x10;// 0 1 0 0 0 0 DDRB = 0x28;// 1 0 1 0 0 0 //------------------------------------------------------------------------------------- // ISP_RESET _HVSP_HVRESET _HVSP_SCI LED ADC_VTARGET ADC_SMPS PORTC= 0x00;// 0 0 0 0 0 0 DDRC = 0x3C;// 1 1 1 1 0 0 //------------------------------------------------------------------------------------- // HVSP_SDO HVSP_SDI HVSP_SII JUMPER USB_D- USB_D+ TXD(ISP_RXD) RXD(ISP_TXD) PORTD= 0x10;// 0 0 0 1 0 0 1 1 DDRD = 0x0C;// 0 0 0 0 1 1 0 1 //------------------------------------------------------------------------------------------ j = 0; while(--j){ /* USB Reset by device only required on Watchdog Reset */ i = 0; while(--i); /* delay >10ms for USB reset */ } DDRD &=~( (1<<_USB_DPLUS)|(1<<_USB_DMINUS) ); /*-------------- T0 配置: ~ 1.365 ms interrupt -----------------*/ TCCR0 = 3; // 1/64 分频 TIMSK = (1 << TOIE0); // 使能 timer0 溢出中断 /*-------------- T1 配置: ~23.4 kHz PWM (9 bit) ----------------*/ TCCR1A = UTIL_BIN8(1000, 0010); // OC1A = PWM, OC1B disconnected, 9 bit TCCR1B = UTIL_BIN8(0000, 1001); // 9 bit, prescaler=1 OCR1A = 1; // 设占空比为最小 /*-------------- T2 配置 ---------------------------------------*/ TCCR2 = UTIL_BIN8(0000, 1001); // OC2 disconnected, prescaler=1 OCR2 = 0; // 产生 3 MHz 时钟 } int main(void) { wdt_enable(WDTO_1S); odDebugInit(); hardwareInit(); vregInit(); usbInit(); sckDuration=eeprom_read_byte(&eeprom_sckDuration); if(sckDuration==0xFF) sckDuration=3; sei(); //--------------------------- PORTC |= (1<= 0) { buffer[i++] = c; } if(i > 0 || sendEmptyFrame){ sendEmptyFrame = i; /* send an empty block after last data block to indicate transfer end */ usbSetInterrupt(buffer, i); } } #endif } return 0; } ...展开收缩
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