找回密碼
 立即注冊

QQ登錄

只需一步，快速開始

搜索
查看: 4738|回復(fù): 1
打印 上一主題 下一主題
收起左側(cè)

ISP下載器 電路圖 原代碼 驅(qū)動(dòng)程序

[復(fù)制鏈接]
跳轉(zhuǎn)到指定樓層
樓主



       該ISP編程器采用ATMEGA8_DIP28作為主控制芯片，預(yù)留MOSI，MISO，RET，SCK，VCC，GND。6PIN接口，方便使用者根據(jù)需要連接目標(biāo)板。

同時(shí)預(yù)留PROGRAMMING編程接口，用戶可自行升級下載器固件。

ISP下載器電路原理圖截圖：



ISP下載器源碼：
  1. /*
  2.   USBasp - USB in-circuit programmer for Atmel AVR controllers

  4.   Thomas Fischl <tfischl@gmx.de>

  6.   License:
  7.   The project is built with AVR USB driver by Objective Development, which is
  8.   published under an own licence based on the GNU General Public License (GPL).
  9.   USBasp is also distributed under this enhanced licence. See Documentation.

  11.   Target.........: ATMega8 at 12 MHz
  12.   Creation Date..: 2005-02-20
  13.   Last change....: 2006-12-29

  15.   PC2 SCK speed option. GND  -> slow (8khz SCK),
  16.                         open -> fast (375kHz SCK)
  17. */

  19. #include <avr/io.h>
  20. #include <avr/interrupt.h>
  21. #include <avr/pgmspace.h>
  22. #include <avr/wdt.h>

  24. #include "usbdrv.h"
  25. #include "isp.h"
  26. #include "clock.h"

  28. #define USBASP_FUNC_CONNECT     1
  29. #define USBASP_FUNC_DISCONNECT  2
  30. #define USBASP_FUNC_TRANSMIT    3
  31. #define USBASP_FUNC_READFLASH   4
  32. #define USBASP_FUNC_ENABLEPROG  5
  33. #define USBASP_FUNC_WRITEFLASH  6
  34. #define USBASP_FUNC_READEEPROM  7
  35. #define USBASP_FUNC_WRITEEEPROM 8

  37. #define PROG_STATE_IDLE         0
  38. #define PROG_STATE_WRITEFLASH   1
  39. #define PROG_STATE_READFLASH    2
  40. #define PROG_STATE_READEEPROM   3
  41. #define PROG_STATE_WRITEEEPROM  4

  43. #define PROG_BLOCKFLAG_FIRST    1
  44. #define PROG_BLOCKFLAG_LAST     2

  46. #define ledRedOn()    PORTC &= ~(1 << PC1)
  47. #define ledRedOff()   PORTC |= (1 << PC1)
  48. #define ledGreenOn()  PORTC &= ~(1 << PC0)
  49. #define ledGreenOff() PORTC |= (1 << PC0)

  51. static uchar replyBuffer[8];

  53. static uchar prog_state = PROG_STATE_IDLE;

  55. static unsigned int prog_address;
  56. static unsigned int prog_nbytes = 0;
  57. static unsigned int prog_pagesize; //TP: Mega128 fix
  58. static uchar prog_blockflags;
  59. static uchar prog_pagecounter;


  62. uchar usbFunctionSetup(uchar data[8]) {

  64.   uchar len = 0;

  66.   if(data[1] == USBASP_FUNC_CONNECT){

  68.     /* set SCK speed */
  69.     if ((PINC & (1 << PC2)) == 0) {
  70.       ispSetSCKOption(ISP_SCK_SLOW);
  71.     } else {
  72.       ispSetSCKOption(ISP_SCK_FAST);
  73.     }

  75.     ispConnect();
  76.     ledRedOn();

  78.   } else if (data[1] == USBASP_FUNC_DISCONNECT) {
  79.     ispDisconnect();
  80.     ledRedOff();

  82.   } else if (data[1] == USBASP_FUNC_TRANSMIT) {
  83.           if(chip==ATM){
  84.             replyBuffer[0] = ispTransmit(data[2]);
  85.             replyBuffer[1] = ispTransmit(data[3]);
  86.             replyBuffer[2] = ispTransmit(data[4]);
  87.             replyBuffer[3] = ispTransmit(data[5]);
  88.           }else{
  89.                   if(data[2]==0x24){
  90.                           replyBuffer[0] = ispTransmit(data[2]);
  91.                     replyBuffer[1] = ispTransmit(data[3]);
  92.                     replyBuffer[2] = ispTransmit(data[4]);
  93.                           switch(ispTransmit(data[5])&0x1C){
  94.                                   case(0x00):replyBuffer[3]=0xE0;break;
  95.                                   case(0x04):replyBuffer[3]=0xE5;break;
  96.                                   case(0x0C):replyBuffer[3]=0xEE;break;
  97.                                   case(0x1C):replyBuffer[3]=0xFF;break;
  98.                                   }
  99.                   }
  100.                   else if(data[2]==0x30){
  101.                           replyBuffer[0] = ispTransmit(0x28);
  102.                     replyBuffer[1] = ispTransmit(data[3]);
  103.                     replyBuffer[2] = ispTransmit(data[4]);
  104.                     replyBuffer[3] = ispTransmit(data[5]);
  105.                   }
  106.                   else{
  107.                           replyBuffer[0] = ispTransmit(data[2]);
  108.                     replyBuffer[1] = ispTransmit(data[3]);
  109.                     replyBuffer[2] = ispTransmit(data[4]);
  110.                     replyBuffer[3] = ispTransmit(data[5]);
  111.             }
  112.     }
  113.     len = 4;

  115.   } else if (data[1] == USBASP_FUNC_READFLASH) {
  116.     prog_address = (data[3] << 8) | data[2];
  117.     prog_nbytes = (data[7] << 8) | data[6];
  118.     prog_state = PROG_STATE_READFLASH;
  119.     len = 0xff; /* multiple in */

  121.   } else if (data[1] == USBASP_FUNC_READEEPROM) {
  122.     prog_address = (data[3] << 8) | data[2];
  123.     prog_nbytes = (data[7] << 8) | data[6];
  124.     prog_state = PROG_STATE_READEEPROM;
  125.     len = 0xff; /* multiple in */

  127.   } else if (data[1] == USBASP_FUNC_ENABLEPROG) {
  128.     replyBuffer[0] = ispEnterProgrammingMode();;
  129.     len = 1;

  131.   } else if (data[1] == USBASP_FUNC_WRITEFLASH) {
  132.     prog_address = (data[3] << 8) | data[2];
  133.     prog_pagesize = data[4];
  134.     prog_blockflags = data[5] & 0x0F;
  135.     prog_pagesize += (((unsigned int)data[5] & 0xF0)<<4); //TP: Mega128 fix
  136.     if (prog_blockflags & PROG_BLOCKFLAG_FIRST) {
  137.       prog_pagecounter = prog_pagesize;
  138.     }
  139.     prog_nbytes = (data[7] << 8) | data[6];
  140.     prog_state = PROG_STATE_WRITEFLASH;
  141.     len = 0xff; /* multiple out */

  143.   } else if (data[1] == USBASP_FUNC_WRITEEEPROM) {
  144.     prog_address = (data[3] << 8) | data[2];
  145.     prog_pagesize = 0;
  146.     prog_blockflags = 0;
  147.     prog_nbytes = (data[7] << 8) | data[6];
  148.     prog_state = PROG_STATE_WRITEEEPROM;
  149.     len = 0xff; /* multiple out */
  150.   }

  152.   usbMsgPtr = replyBuffer;

  154.   return len;
  155. }


  158. uchar usbFunctionRead(uchar *data, uchar len) {

  160.   uchar i;

  162.   /* check if programmer is in correct read state */
  163.   if ((prog_state != PROG_STATE_READFLASH) &&
  164.       (prog_state != PROG_STATE_READEEPROM)) {
  165.     return 0xff;
  166.   }

  168.   /* fill packet */
  169.   for (i = 0; i < len; i++) {
  170.     if (prog_state == PROG_STATE_READFLASH) {
  171.       data[i] = ispReadFlash(prog_address);
  172.     } else {
  173.       data[i] = ispReadEEPROM(prog_address);
  174.     }
  175.     prog_address++;
  176.   }

  178.   /* last packet? */
  179.   if (len < 8) {
  180.     prog_state = PROG_STATE_IDLE;
  181.   }

  183.   return len;
  184. }


  187. uchar usbFunctionWrite(uchar *data, uchar len) {

  189.   uchar retVal = 0;
  190.   uchar i;

  192.   /* check if programmer is in correct write state */
  193.   if ((prog_state != PROG_STATE_WRITEFLASH) &&
  194.       (prog_state != PROG_STATE_WRITEEEPROM)) {
  195.     return 0xff;
  196.   }


  199.   for (i = 0; i < len; i++) {

  201.     if (prog_state == PROG_STATE_WRITEFLASH) {
  202.       /* Flash */

  204.       if (prog_pagesize == 0) {
  205.         /* not paged */
  206.         ispWriteFlash(prog_address, data[i], 1);
  207.       } else {
  208.         /* paged */
  209.         ispWriteFlash(prog_address, data[i], 0);
  210.         prog_pagecounter --;
  211.         if (prog_pagecounter == 0) {
  212.           ispFlushPage(prog_address, data[i]);
  213.           prog_pagecounter = prog_pagesize;
  214.         }
  215.       }

  217.     } else {
  218.       /* EEPROM */
  219.       ispWriteEEPROM(prog_address, data[i]);
  220.     }

  222.     prog_nbytes --;

  224.     if (prog_nbytes == 0) {
  225.       prog_state = PROG_STATE_IDLE;
  226.       if ((prog_blockflags & PROG_BLOCKFLAG_LAST) &&
  227.           (prog_pagecounter != prog_pagesize)) {

  229.         /* last block and page flush pending, so flush it now */
  230.         ispFlushPage(prog_address, data[i]);
  231.       }
  232.           
  233.           retVal = 1; // Need to return 1 when no more data is to be received
  234.     }

  236.     prog_address ++;
  237.   }

  239.   return retVal;
  240. }


  243. int main(void)
  244. {
  245.   uchar   i, j;

  247.   PORTD = 0;
  248.   PORTB = 0;                /* no pullups on USB and ISP pins */
  249.   DDRD = ~(1 << 2);        /* all outputs except PD2 = INT0 */

  251.   DDRB = ~0;            /* output SE0 for USB reset */
  252.   j = 0;
  253.   while(--j){           /* USB Reset by device only required on Watchdog Reset */
  254.       i = 0;
  255.       while(--i);       /* delay >10ms for USB reset */
  256.   }
  257.   DDRB = 0;             /* all USB and ISP pins inputs */

  259.   DDRC = 0x03;          /* all inputs except PC0, PC1 */
  260.   PORTC = 0xfe;
  261.        
  262.         chip=ATM;
  263.        
  264.   clockInit();          /* init timer */

  266.   ispSetSCKOption(ISP_SCK_FAST);

  268.   usbInit();
  269.   sei();
  270.   for(;;){                /* main event loop */
  271.     usbPoll();
  272.   }
  273.   return 0;
  274. }

復(fù)制代碼
全部資料（壓縮包）下載：
windows端驅(qū)動(dòng).zip (32.27 KB, 下載次數(shù): 16) 固件和AVR單片機(jī)源碼.zip (146.18 KB, 下載次數(shù): 16) 原理圖和PCB源文件.zip (122.32 KB, 下載次數(shù): 13)



分享到:  QQ好友和群QQ好友和群 QQ空間QQ空間 騰訊微博騰訊微博 騰訊朋友騰訊朋友
收藏收藏1 分享淘帖 頂頂 踩踩
回復(fù)

使用道具 舉報(bào)

沙發(fā)
ID:125666 發(fā)表于 2016-6-7 16:21 | 只看該作者
好牛逼
回復(fù)

使用道具 舉報(bào)

您需要登錄后才可以回帖 登錄 | 立即注冊

本版積分規(guī)則

手機(jī)版|小黑屋|51黑電子論壇 |51黑電子論壇6群 QQ 管理員QQ:125739409;技術(shù)交流QQ群281945664

Powered by 單片機(jī)教程網(wǎng)

快速回復(fù) 返回頂部 返回列表