bootloader.lst

Atmega系列单片机 BootLoader程序

__start:
__text_start:
    1C2A E001      LDI	R16,1
    1C2B BF05      OUT	0x35,R16
    1C2C E002      LDI	R16,2
    1C2D BF05      OUT	0x35,R16
    1C2E E5CF      LDI	R28,0x5F
    1C2F E0D4      LDI	R29,4
    1C30 BFCD      OUT	0x3D,R28
    1C31 BFDE      OUT	0x3E,R29
    1C32 51C0      SUBI	R28,0x10
    1C33 40D0      SBCI	R29,0
    1C34 EA0A      LDI	R16,0xAA
    1C35 8308      STD	Y+0,R16
    1C36 2400      CLR	R0
    1C37 E6E0      LDI	R30,0x60
    1C38 E0F0      LDI	R31,0
    1C39 E010      LDI	R17,0
    1C3A 3EE4      CPI	R30,0xE4
    1C3B 07F1      CPC	R31,R17
    1C3C F011      BEQ	0x1C3F
    1C3D 9201      ST	R0,Z+
    1C3E CFFB      RJMP	0x1C3A
    1C3F 8300      STD	Z+0,R16
    1C40 E5E4      LDI	R30,0x54
    1C41 E3F8      LDI	R31,0x38
    1C42 E6A0      LDI	R26,0x60
    1C43 E0B0      LDI	R27,0
    1C44 E318      LDI	R17,0x38
    1C45 35E4      CPI	R30,0x54
    1C46 07F1      CPC	R31,R17
    1C47 F021      BEQ	0x1C4C
    1C48 95C8      LPM
    1C49 9631      ADIW	R30,1
    1C4A 920D      ST	R0,X+
    1C4B CFF9      RJMP	0x1C45
    1C4C D11D      RCALL	_main
_exit:
    1C4D CFFF      RJMP	_exit
FILE: D:\桌面\AVR_BO~1.2\bootloader\assembly.s
(0001) 		.text
(0002) 
(0003) ;*********************************************************
(0004) ;*********************************************************
(0005) ;*********************************************************
(0006) ;*********************************************************
(0007) ; DO NOT CHANGE ANYTHING BELOW THIS LINE !!!!!!!
(0008) ;*********************************************************
(0009) ;*********************************************************
(0010) ;*********************************************************
(0011) ;*********************************************************
(0012) 
(0013) 
(0014)     SPMCR = 0x57
(0015) 
(0016) 
(0017) ;-----------------------------------------  
(0018) 
(0019) ; void write_page (unsigned int adr, unsigned char function);
(0020) ; bits 8:15 adr addresses the page...(must setup RAMPZ beforehand!!!)
(0021) _write_page::
(0022)     XCALL __WAIT_SPMEN__
_write_page:
    1C4E D01F      RCALL	0x1C6E
(0023)     movw    r30, r16        ;move address to z pointer (R31 = ZH, R30 = ZL)
    1C4F 01F8      MOVW	R30,R16
(0024)     STS     SPMCR, R18      ;argument 2 decides function
    1C50 93200057  STS	0x57,R18
(0025)     SPM                     ;perform pagewrite
    1C52 95E8      SPM
(0026)     RET
    1C53 9508      RET
(0027) 
(0028) ;-----------------------------------------
(0029) 
(0030) ; void fill_temp_buffer (unsigned int data, unsigned int adr);
(0031) ; bits 7:1 in adr addresses the word in the page... (2=first word, 4=second word etc..)
(0032) _fill_temp_buffer::
(0033)     XCALL __WAIT_SPMEN__
_fill_temp_buffer:
    1C54 D019      RCALL	0x1C6E
(0034)     movw    r30, r18        ;move adress to z pointer (R31=ZH R30=ZL)
    1C55 01F9      MOVW	R30,R18
(0035)     movw    r0, r16         ;move data to reg 0 and 1
    1C56 0108      MOVW	R0,R16
(0036)     LDI     R19, 0x01
    1C57 E031      LDI	R19,1
(0037)     STS     SPMCR, R19
    1C58 93300057  STS	0x57,R19
(0038)     SPM                     ;Store program memory
    1C5A 95E8      SPM
(0039)     RET      
    1C5B 9508      RET
(0040) 	
(0041) ;-----------------------------------------	
(0042) 
(0043) ;unsigned char read_flash(unsigned int add);
(0044) _read_flash::
(0045)     mov r31,r17
_read_flash:
    1C5C 2FF1      MOV	R31,R17
(0046)     mov r30,r16
    1C5D 2FE0      MOV	R30,R16
(0047)     lpm r16,z
    1C5E 9104      LPM	R16,0(Z)
(0048)     clr r17
    1C5F 2711      CLR	R17
(0049)     ret	
    1C60 9508      RET
(0050) 		
(0051) ;unsigned int read_program_memory (unsigned int adr ,unsigned char cmd);
(0052) _read_program_memory::
(0053)     movw    r30, r16        ;move adress to z pointer
_read_program_memory:
    1C61 01F8      MOVW	R30,R16
(0054)     SBRC    R18, 0          ;read lockbits? (second argument = 0x09)
    1C62 FD20      SBRC	R18,0
(0055)     STS     SPMCR, R18      ;if so, place second argument in SPMEN register
    1C63 93200057  STS	0x57,R18
(0056)     LPM     r16, Z+
    1C65 9105      LPM	R16,Z+
(0057)     LPM     r17, Z
    1C66 9114      LPM	R17,0(Z)
(0058)     RET
    1C67 9508      RET
(0059) 	
(0060) ;-----------------------------------------
(0061)         
(0062) _enableRWW::
(0063) 	XCALL __WAIT_SPMEN__
_enableRWW:
    1C68 D005      RCALL	0x1C6E
(0064)     LDI R27,0x11
    1C69 E1B1      LDI	R27,0x11
(0065)     STS SPMCR,R27
    1C6A 93B00057  STS	0x57,R27
(0066)     SPM
    1C6C 95E8      SPM
(0067)     RET   
    1C6D 9508      RET
(0068) 	
(0069) ;-----------------------------------------           
(0070) 
(0071) __WAIT_SPMEN__:
(0072)     LDS     R27,SPMCR       ; load SPMCR to R27
    1C6E 91B00057  LDS	R27,0x57
(0073)     SBRC    R27,0           ; check SPMEN flag
    1C70 FDB0      SBRC	R27,0
(0074)     RJMP    __WAIT_SPMEN__  ; wait for SPMEN flag cleared        
    1C71 CFFC      RJMP	0x1C6E
(0075)     RET
    1C72 9508      RET
FILE: D:\桌面\AVR_BO~1.2\bootloader\main.c
(0001) /******************************************************************************
(0002) Atmega系列单片机 BootLoader程序  
(0003) 日  期：2007年4月
(0004) 作  者:likeeavr
(0005) 版权所有：avrvi论坛
(0006) 
(0007) 说明：当前版本只针对本论坛M16开发板
(0008) 
(0009) 上位机借用了冯建辉的程序。
(0010) 
(0011) /*****************************************************************************/
(0012) #include <macros.h>
(0013) #include "assembly.h"
(0014)  
(0015) #define  ChipType     Atmega16       
(0016)       
(0017) //*********************************************************
(0018) //选择BOOT区大小  此必须与ICC options中的选项相对应
(0019) //#define  BootSize     'a'    //128   
(0020) //#define  BootSize     'b'    //256
(0021) //#define  BootSize     'c'    //512
(0022) #define    BootSize       'd'    //1024
(0023) //选择BootLoad版本号
(0024) #define  BootVer        'f'    //1.0版本
(0025) 
(0026) //**********************************************************
(0027) 
(0028) #define  Atmega16       0x31
(0029) 
(0030) //*****************************************************************************
(0031) #define  InteClk                 //是否使用内部时钟
(0032) #define  OscAddress     0x1fff   //时钟校准值存储地址
(0033) 
(0034) //*****************************************************************************
(0035) //7.3728M时钟下的波特率为19200的设置,此设置可根据ICC生成，选对芯片，时钟，波特率既可
(0036) //由此语句调用UBRR = BAU;
(0037) #define  BAU  23    // 7.3728M 19200
(0038) //#define  BAU  191 // 7.3728M 2400
(0039) //#define  BAU  95  // 7.3728M 4800
(0040) //#define  BAU  47  // 7.3728M 9600
(0041) //#define  BAU  31  // 7.3728M 14400
(0042) //#define  BAU  23  // 7.3728M 19200
(0043) //#define  BAU  15  // 7.3728M 28800
(0044) 
(0045) //#define  BAU  38  // 12M 19200
(0046) 
(0047) //*****************************************************************************
(0048) 
(0049) #include  <iom16v.h>
(0050) #define   PageByte 	 	 128    
(0051) #define   AddressShift 	 7
(0052) #define	INTVECREG	 	 GICR
(0053) 
(0054) 
(0055) void          FlashLoad        (void);
(0056) void          GetPageNumber    (void);
(0057) void          ExecCode         (void);
(0058) char          GetPage          (void);
(0059) void          WriteFlash       (void);
(0060) char          CheckFlash       (void);
(0061) unsigned char IsChar           (void);
(0062) void          SendChar         (unsigned char c);
(0063) void          delay            (void);                 //1ms延时函数
(0064) unsigned char RecChar          (void);
(0065) 
(0066) unsigned char PageBuffer[PageByte];
(0067) unsigned int  RealPageAddress;
(0068) unsigned int  PageAddress;
(0069) 
(0070) /*****************************************************************************/
(0071) //Flash编程								                     
(0072) /*****************************************************************************/
(0073) void FlashLoad(void)
(0074)   {
(0075)     SendChar('!');
_FlashLoad:
    1C73 E201      LDI	R16,0x21
    1C74 D0E0      RCALL	_SendChar
    1C75 C019      RJMP	0x1C8F
(0076)     while (1)
(0077)     {
(0078) 	 GetPageNumber();
    1C76 D01A      RCALL	_GetPageNumber
(0079) 
(0080) 	 if (RealPageAddress == 0xffff) 
    1C77 91800062  LDS	R24,RealPageAddress
    1C79 91900063  LDS	R25,RealPageAddress+1
    1C7B 3F8F      CPI	R24,0xFF
    1C7C EFEF      LDI	R30,0xFF
    1C7D 079E      CPC	R25,R30
    1C7E F409      BNE	0x1C80
(0081) 	   return;
    1C7F C010      RJMP	0x1C90
(0082)         
(0083) 	 if (GetPage())
    1C80 D028      RCALL	_GetPage
    1C81 2300      TST	R16
    1C82 F051      BEQ	0x1C8D
(0084) 	  {
(0085) 		WriteFlash();
    1C83 D061      RCALL	_WriteFlash
(0086) 	    if (CheckFlash()) 
    1C84 D093      RCALL	_CheckFlash
    1C85 2300      TST	R16
    1C86 F019      BEQ	0x1C8A
(0087) 		  SendChar('!');
    1C87 E201      LDI	R16,0x21
    1C88 D0CC      RCALL	_SendChar
    1C89 C005      RJMP	0x1C8F
(0088) 	    else 
(0089) 		  SendChar('@');
    1C8A E400      LDI	R16,0x40
    1C8B D0C9      RCALL	_SendChar
(0090) 	  }
    1C8C C002      RJMP	0x1C8F
(0091) 	 else 
(0092) 	   SendChar('@');
    1C8D E400      LDI	R16,0x40
    1C8E D0C6      RCALL	_SendChar
    1C8F CFE6      RJMP	0x1C76
    1C90 9508      RET
_GetPageNumber:
  PageAddressL         --> R20
  PageAddressH         --> R22
    1C91 940E1DBC  CALL	push_gset2
(0093)     }
(0094)   }
(0095) 
(0096) /*****************************************************************************/
(0097) void GetPageNumber(void)
(0098)   {
(0099)     unsigned char PageAddressH;
(0100)     unsigned char PageAddressL;
(0101) 
(0102)     PageAddressH = RecChar();
    1C93 D0BD      RCALL	_RecChar
    1C94 2F60      MOV	R22,R16
(0103) 
(0104)     PageAddressL = RecChar();
    1C95 D0BB      RCALL	_RecChar
    1C96 2F40      MOV	R20,R16
(0105) 
(0106)     RealPageAddress=(int)((PageAddressH << 8) + PageAddressL);
    1C97 2E36      MOV	R3,R22
    1C98 2E24      MOV	R2,R20
    1C99 92300063  STS	RealPageAddress+1,R3
    1C9B 92200062  STS	RealPageAddress,R2
(0107) 	PageAddress=RealPageAddress<<AddressShift;
    1C9D E027      LDI	R18,7
    1C9E E030      LDI	R19,0
    1C9F 0181      MOVW	R16,R2
    1CA0 940E1DD5  CALL	lsl16
    1CA2 93100061  STS	PageAddress+1,R17
    1CA4 93000060  STS	PageAddress,R16
    1CA6 940E1DB0  CALL	pop_gset2
    1CA8 9508      RET
_GetPage:
  CheckSum             --> R20
  LocalCheckSum        --> R22
  i                    --> R10
    1CA9 940E1DBA  CALL	push_gset3
(0108) #ifdef RAMPZ_FLAG
(0109)     if (PageAddressH) 
(0110) 	   RAMPZ = 1; 
(0111)     else 
(0112) 	   RAMPZ = 0;
(0113) #endif	
(0114)   }
(0115) 
(0116) /*****************************************************************************/
(0117) char GetPage(void)
(0118)   {
(0119)     unsigned char i;
(0120)     unsigned char LocalCheckSum = 0;
    1CAB 2766      CLR	R22
(0121)     unsigned char CheckSum = 0;
    1CAC 2744      CLR	R20
(0122) 
(0123)     for (i=0;i<PageByte/2;i++)
    1CAD 24AA      CLR	R10
    1CAE C012      RJMP	0x1CC1
(0124) 	{
(0125) 	 while(!IsChar());
    1CAF D09B      RCALL	_IsChar
    1CB0 2300      TST	R16
    1CB1 F3E9      BEQ	0x1CAF
(0126) 	 PageBuffer[i]=RecChar();
    1CB2 D09E      RCALL	_RecChar
    1CB3 E684      LDI	R24,0x64
    1CB4 E090      LDI	R25,0
    1CB5 2DEA      MOV	R30,R10
    1CB6 27FF      CLR	R31
    1CB7 0FE8      ADD	R30,R24
    1CB8 1FF9      ADC	R31,R25
    1CB9 8300      STD	Z+0,R16
(0127) 	 LocalCheckSum ^= PageBuffer[i];
    1CBA 2DEA      MOV	R30,R10
    1CBB 27FF      CLR	R31
    1CBC 0FE8      ADD	R30,R24
    1CBD 1FF9      ADC	R31,R25
    1CBE 8020      LDD	R2,Z+0
    1CBF 2562      EOR	R22,R2
    1CC0 94A3      INC	R10
    1CC1 2D8A      MOV	R24,R10
    1CC2 3480      CPI	R24,0x40
    1CC3 F358      BCS	0x1CAF
(0128)    	}
(0129) 	for (i=0;i<PageByte/2;i++)
    1CC4 24AA      CLR	R10
    1CC5 C012      RJMP	0x1CD8
(0130) 	{
(0131) 	 while(!IsChar());
    1CC6 D084      RCALL	_IsChar
    1CC7 2300      TST	R16
    1CC8 F3E9      BEQ	0x1CC6
(0132) 	 PageBuffer[i+PageByte/2]=RecChar();
    1CC9 D087      RCALL	_RecChar
    1CCA EA84      LDI	R24,0xA4
    1CCB E090      LDI	R25,0
    1CCC 2DEA      MOV	R30,R10
    1CCD 27FF      CLR	R31
    1CCE 0FE8      ADD	R30,R24
    1CCF 1FF9      ADC	R31,R25
    1CD0 8300      STD	Z+0,R16
(0133) 	 LocalCheckSum ^= PageBuffer[i+PageByte/2];
    1CD1 2DEA      MOV	R30,R10
    1CD2 27FF      CLR	R31
    1CD3 0FE8      ADD	R30,R24
    1CD4 1FF9      ADC	R31,R25
    1CD5 8020      LDD	R2,Z+0
    1CD6 2562      EOR	R22,R2
    1CD7 94A3      INC	R10
    1CD8 2D8A      MOV	R24,R10
    1CD9 3480      CPI	R24,0x40
    1CDA F358      BCS	0x1CC6
(0134)    	}	   
(0135)     CheckSum = RecChar(); 
    1CDB D075      RCALL	_RecChar
    1CDC 2F40      MOV	R20,R16
(0136) 	
(0137)     if (LocalCheckSum == CheckSum)