📄 avrbootloader.lst
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__start:
__text_start:
0E13 E001 LDI R16,1
0E14 BF05 OUT 0x35,R16
0E15 E002 LDI R16,2
0E16 BF05 OUT 0x35,R16
0E17 E5CF LDI R28,0x5F
0E18 E0D4 LDI R29,4
0E19 BFCD OUT 0x3D,R28
0E1A BFDE OUT 0x3E,R29
0E1B 51C0 SUBI R28,0x10
0E1C 40D0 SBCI R29,0
0E1D EA0A LDI R16,0xAA
0E1E 8308 STD Y+0,R16
0E1F 2400 CLR R0
0E20 E6E0 LDI R30,0x60
0E21 E0F0 LDI R31,0
0E22 E010 LDI R17,0
0E23 3AE2 CPI R30,0xA2
0E24 07F1 CPC R31,R17
0E25 F011 BEQ 0x0E28
0E26 9201 ST R0,Z+
0E27 CFFB RJMP 0x0E23
0E28 8300 STD Z+0,R16
0E29 E2E6 LDI R30,0x26
0E2A E1FC LDI R31,0x1C
0E2B E6A0 LDI R26,0x60
0E2C E0B0 LDI R27,0
0E2D E11C LDI R17,0x1C
0E2E 32E6 CPI R30,0x26
0E2F 07F1 CPC R31,R17
0E30 F021 BEQ 0x0E35
0E31 95C8 LPM
0E32 9631 ADIW R30,1
0E33 920D ST R0,X+
0E34 CFF9 RJMP 0x0E2E
0E35 D0D1 RCALL _main
_exit:
0E36 CFFF RJMP _exit
FILE: D:\IccAvr\Pei\BootLoad_Pei\main.c
(0001) /******************************************************************************
(0002) Atmega8、16 BootLoad程序
(0003) 日 期：2004年的最后一天
(0004) 肖 鹏 www.527dz.com 527dz@527dz.com
(0005)
(0006) /*****************************************************************************/
(0007)
(0008) //修改pei2005.6.24
(0009) //1.针对W0和W1的硬件进行修改，主要是使用晶振、修改Baud、关无线模块
(0010) //2.增加：用户区无程序时不跳出Boot循环
(0011) //3.修正Bug:原GetPageNumber()由于移位的原因，PageAddress!=0xffff,即FlashLoad()无法退出
(0012) //4.增加：Page地址比较重要，也要效验,添加到GetPage()中
(0013)
(0014) #include <macros.h>
(0015) #include "assembly.h"
(0016)
(0017) #define W0
(0018) //×××××××××××××××××××××××××××××××××××××××××××××××××××××××××
(0019) //请根据目标板选择芯片型号
(0020) #ifdef W0
(0021) #define ChipType Atmega8
(0022) #else
(0023) #define ChipType Atmega16
(0024) #endif
(0025) //#define ChipType Atmega32
(0026) //#define ChipType Atmega64
(0027) //#define ChipType Atmega128
(0028) //#define ChipType Atmega8535
(0029) //*********************************************************
(0030) //选择BOOT区大小
(0031) //#define BootSize 'a' //128
(0032) //#define BootSize 'b' //256
(0033) #define BootSize 'c' //512
(0034) //#define BootSize 'd' //1024
(0035) //#define BootSize 'e' //2048（不知道是否有2048字BOOT空间的芯片）
(0036) //选择BootLoad版本号
(0037) //#define BootVer 'f' //1.0版本
(0038) #define BootVer 'g' //1.1版本 pei
(0039) //#define BootVer 'h' //1.2版本
(0040) //#define BootVer 'i' //1.3版本
(0041) //#define BootVer 'j' //1.4版本
(0042) //#define BootVer 'k' //1.5版本
(0043) //#define BootVer 'l' //1.6版本
(0044) //#define BootVer 'm' //1.7版本
(0045) //#define BootVer 'n' //1.8版本
(0046) //#define BootVer 'o' //1.9版本
(0047) //#define BootVer 'p' //2.0版本(应该是最终版本了）
(0048) //**********************************************************
(0049) #define Atmega8 0x30
(0050) #define Atmega16 0x31
(0051) #define Atmega32 0x32
(0052) #define Atmega64 0x33
(0053) #define Atmega128 0x34
(0054) #define Atmega8535 0x35
(0055) //*****************************************************************************
(0056) //#define InteClk //是否使用内部时钟
(0057) #define OscAddress 0x1fff //时钟校准值存储地址
(0058) //#define OscAddress 0x3fff //时钟校准值存储地址
(0059) //*****************************************************************************
(0060) //8时钟下的波特率设置
(0061) //#define BAU 103 //4800
(0062) //#define BAU 51 //9600
(0063) //#define BAU 34 //14400
(0064) //#define BAU 25 //19200
(0065) //*****************************************************************************
(0066)
(0067) //11.0592M pei
(0068) #define BAU 35 //pei baud19200
(0069) //#define BAU 17 //pei baud38400
(0070)
(0071) #if (ChipType == Atmega8)
(0072) #include "iom8v.h"
(0073) #define PageByte 64
(0074) #define AddressShift 6
(0075) #endif
(0076)
(0077) #if (ChipType == Atmega16)
(0078) #include "iom16v.h"
(0079) #define PageByte 128
(0080) #define AddressShift 7
(0081) #endif
(0082)
(0083) void FlashLoad (void);
(0084) void GetPageNumber (void);
(0085) void ExecCode (void);
(0086) char GetPage (void);
(0087) void WriteFlash (void);
(0088) char CheckFlash (void);
(0089) void SendChar (unsigned char c);
(0090) void delay (void); //1ms延时函数
(0091) unsigned char RecChar (void);
(0092)
(0093) unsigned char PageBuffer[PageByte];
(0094) unsigned int PageAddress;
(0095)
(0096) /*****************************************************************************/
(0097) //Flash编程
(0098) /*****************************************************************************/
(0099) void FlashLoad(void)
(0100) {unsigned char AddH,AddL;
(0101) SendChar('!');
_FlashLoad:
AddL --> Y+1
AddH --> Y+1
0E37 E201 LDI R16,0x21
0E38 D0B9 RCALL _SendChar
0E39 C018 RJMP 0x0E52
(0102) while (1)
(0103) {
(0104) //GetPageNumber();//bug!由于移位的原因，PageAddress!=0xffff
(0105) //if (PageAddress == 0xffff) return;//退不出了:)
(0106)
(0107) if (GetPage())
0E3A D019 RCALL _GetPage
0E3B 2300 TST R16
0E3C F099 BEQ 0x0E50
(0108) {
(0109) if (PageAddress == 0xffff) return;//pei Page地址读取和判断加到GetPage()中了
0E3D 91800060 LDS R24,PageAddress
0E3F 91900061 LDS R25,PageAddress+1
0E41 3F8F CPI R24,0xFF
0E42 EFEF LDI R30,0xFF
0E43 079E CPC R25,R30
0E44 F409 BNE 0x0E46
0E45 C00D RJMP 0x0E53
(0110)
(0111) WriteFlash();
0E46 D04A RCALL _WriteFlash
(0112) if (CheckFlash()) SendChar('!');
0E47 D076 RCALL _CheckFlash
0E48 2300 TST R16
0E49 F019 BEQ 0x0E4D
0E4A E201 LDI R16,0x21
0E4B D0A6 RCALL _SendChar
0E4C C005 RJMP 0x0E52
(0113) else SendChar('@');
0E4D E400 LDI R16,0x40
0E4E D0A3 RCALL _SendChar
(0114) }
0E4F C002 RJMP 0x0E52
(0115) else SendChar('@');
0E50 E400 LDI R16,0x40
0E51 D0A0 RCALL _SendChar
0E52 CFE7 RJMP 0x0E3A
0E53 9508 RET
_GetPage:
CheckSum --> R20
AddL --> R22
AddH --> R12
LocalCheckSum --> R10
i --> R22
0E54 D12E RCALL push_gset4
(0116) }
(0117) }
(0118)
(0119) /****************************************************************************
(0120) void GetPageNumber(void)
(0121) {
(0122) unsigned char PageAddressH;
(0123) unsigned char PageAddressL;
(0124)
(0125) PageAddressH = RecChar();
(0126)
(0127) PageAddressL = RecChar();
(0128)
(0129) PageAddress=((int)((PageAddressH << 8) + PageAddressL))<<AddressShift;
(0130) }
(0131)
(0132) /*****************************************************************************/
(0133) char GetPage(void)
(0134) {
(0135) unsigned char i,AddH,AddL;
(0136) unsigned char LocalCheckSum = 0;
0E55 24AA CLR R10
(0137) unsigned char CheckSum = 0;
0E56 2744 CLR R20
(0138)
(0139) AddH=RecChar();AddL=RecChar();
0E57 D096 RCALL _RecChar
0E58 2EC0 MOV R12,R16
0E59 D094 RCALL _RecChar
0E5A 2F60 MOV R22,R16
(0140) PageAddress=(AddH<<8)+AddL;
0E5B 2C3C MOV R3,R12
0E5C 2E26 MOV R2,R22
0E5D 92300061 STS PageAddress+1,R3
0E5F 92200060 STS PageAddress,R2
(0141) if (PageAddress==0xffff) return 1;//exit..
0E61 01C1 MOVW R24,R2
0E62 3F8F CPI R24,0xFF
0E63 EFEF LDI R30,0xFF
0E64 079E CPC R25,R30
0E65 F411 BNE 0x0E68
0E66 E001 LDI R16,1
0E67 C027 RJMP 0x0E8F
(0142) PageAddress=PageAddress<<AddressShift;
0E68 E026 LDI R18,6
0E69 E030 LDI R19,0
0E6A 91000060 LDS R16,PageAddress
0E6C 91100061 LDS R17,PageAddress+1
0E6E D131 RCALL lsl16
0E6F 93100061 STS PageAddress+1,R17
0E71 93000060 STS PageAddress,R16
(0143) LocalCheckSum=AddH+AddL;//pei考虑Page的效验
0E73 2CAC MOV R10,R12
0E74 0EA6 ADD R10,R22
(0144)
(0145) for (i=0;i<PageByte;i++)
0E75 2766 CLR R22
0E76 C00F RJMP 0x0E86
(0146) {
(0147) PageBuffer[i]=RecChar();
0E77 D076 RCALL _RecChar
0E78 E682 LDI R24,0x62
0E79 E090 LDI R25,0
0E7A 2FE6 MOV R30,R22
0E7B 27FF CLR R31
0E7C 0FE8 ADD R30,R24
0E7D 1FF9 ADC R31,R25
0E7E 8300 STD Z+0,R16
(0148) LocalCheckSum += PageBuffer[i];
0E7F 2FE6 MOV R30,R22
0E80 27FF CLR R31
0E81 0FE8 ADD R30,R24
0E82 1FF9 ADC R31,R25
0E83 8020 LDD R2,Z+0
0E84 0CA2 ADD R10,R2
0E85 9563 INC R22
0E86 3460 CPI R22,0x40
0E87 F378 BCS 0x0E77
(0149) }
(0150)
(0151) CheckSum = RecChar();
0E88 D065 RCALL _RecChar
0E89 2F40 MOV R20,R16
(0152) if (LocalCheckSum == CheckSum) return 1;
0E8A 16A0 CP R10,R16
0E8B F411 BNE 0x0E8E
0E8C E001 LDI R16,1
0E8D C001 RJMP 0x0E8F
(0153) else return 0;
0E8E 2700 CLR R16
0E8F D0EF RCALL pop_gset4
0E90 9508 RET
_WriteFlash:
TempInt --> R20
i --> R22
0E91 D0F5 RCALL push_gset2
(0154) }
(0155)
(0156) /*****************************************************************************/
(0157) void WriteFlash(void)
(0158) {
(0159) unsigned int i;
(0160) unsigned int TempInt;
(0161)
(0162) for (i=0;i<PageByte;i+=2)
0E92 2766 CLR R22
0E93 2777 CLR R23
0E94 C016 RJMP 0x0EAB
(0163) {
(0164) TempInt=PageBuffer[i]+(PageBuffer[i+1]<<8);
0E95 E682 LDI R24,0x62
0E96 E090 LDI R25,0
0E97 01FB MOVW R30,R22
0E98 9631 ADIW R30,1
0E99 0FE8 ADD R30,R24
0E9A 1FF9 ADC R31,R25
0E9B 8020 LDD R2,Z+0
0E9C 2433 CLR R3
0E9D 2C32 MOV R3,R2
0E9E 2422 CLR R2
0E9F 01FB MOVW R30,R22
0EA0 0FE8 ADD R30,R24
0EA1 1FF9 ADC R31,R25
0EA2 8140 LDD R20,Z+0
0EA3 2755 CLR R21
0EA4 0D42 ADD R20,R2
0EA5 1D53 ADC R21,R3
(0165) fill_temp_buffer(TempInt,i); //call asm routine.
0EA6 019B MOVW R18,R22
0EA7 018A MOVW R16,R20
0EA8 D0B3 RCALL _fill_temp_buffer
0EA9 5F6E SUBI R22,0xFE
0EAA 4F7F SBCI R23,0xFF
0EAB 3460 CPI R22,0x40
0EAC E0E0 LDI R30,0
0EAD 077E CPC R23,R30
0EAE F330 BCS 0x0E95
(0166) }
(0167)
(0168) write_page(PageAddress,0x03); //擦除页
0EAF E023 LDI R18,3
0EB0 91000060 LDS R16,PageAddress
0EB2 91100061 LDS R17,PageAddress+1
0EB4 D0A1 RCALL _write_page
(0169) write_page(PageAddress,0x05); //写页数据
0EB5 E025 LDI R18,5
0EB6 91000060 LDS R16,PageAddress
0EB8 91100061 LDS R17,PageAddress+1
0EBA D09B RCALL _write_page
(0170)
(0171) enableRWW();
0EBB D0B4 RCALL _enableRWW
0EBC D0BE RCALL pop_gset2
0EBD 9508 RET
_CheckFlash:
TempInt2 --> R20
TempInt --> R22
i --> R10
0EBE D0C6 RCALL push_gset3
(0172) }
(0173)
(0174) /*****************************************************************************/
(0175)
(0176) char CheckFlash(void)
(0177) {
(0178) unsigned char i;
(0179) unsigned int TempInt;
(0180) unsigned int TempInt2;
(0181)
(0182) for (i=0;i<PageByte;i+=2)
0EBF 24AA CLR R10
0EC0 C027 RJMP 0x0EE8
(0183) {
(0184) TempInt = read_program_memory(PageAddress + i,0x00);
0EC1 2722 CLR R18
0EC2 2C2A MOV R2,R10
0EC3 2433 CLR R3
0EC4 91000060 LDS R16,PageAddress
0EC6 91100061 LDS R17,PageAddress+1
0EC8 0D02 ADD R16,R2
0EC9 1D13 ADC R17,R3
0ECA D09E RCALL _read_program_memory
0ECB 01B8 MOVW R22,R16
(0185) TempInt2 = PageBuffer[i] +(PageBuffer[i+1]<<8);
0ECC E683 LDI R24,0x63
0ECD E090 LDI R25,0
0ECE 2DEA MOV R30,R10
0ECF 27FF CLR R31
0ED0 0FE8 ADD R30,R24
0ED1 1FF9 ADC R31,R25
0ED2 8020 LDD R2,Z+0
0ED3 2433 CLR R3
0ED4 2C32 MOV R3,R2
0ED5 2422 CLR R2
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