serial.lst

atmel公司atmega单片机bootloader的源代码

##############################################################################
#                                                                            #
# IAR Atmel AVR C/C++ Compiler V4.11A/W32              17/Jan/2006  19:30:54 #
# Copyright 1996-2005 IAR Systems. All rights reserved.                      #
#                                                                            #
#    Source file  =  C:\Documents and Settings\andeaper\My                   #
#                    Documents\QVCS\Appnotes\AVR109 Self Programming\Source  #
#                    Code\IAR\ATmega2560\serial.c                            #
#    Command line =  "C:\Documents and Settings\andeaper\My                  #
#                    Documents\QVCS\Appnotes\AVR109 Self Programming\Source  #
#                    Code\IAR\ATmega2560\serial.c" --cpu=m2560 -ms -o        #
#                    "C:\Documents and Settings\andeaper\My                  #
#                    Documents\QVCS\Appnotes\AVR109 Self Programming\Source  #
#                    Code\IAR\ATmega2560\Debug\Obj\" -lCN "C:\Documents and  #
#                    Settings\andeaper\My Documents\QVCS\Appnotes\AVR109     #
#                    Self Programming\Source Code\IAR\ATmega2560\Debug\List\ #
#                    " -y --initializers_in_flash -z2 --no_cse --no_inline   #
#                    --no_code_motion --no_cross_call --no_clustering        #
#                    --no_tbaa --cross_call_passes=4 --debug                 #
#                    -DENABLE_BIT_DEFINITIONS --do_cross_call -e -I          #
#                    "C:\Program Files\IAR Systems\Embedded Workbench        #
#                    4.0\avr\INC\" -I "C:\Program Files\IAR                  #
#                    Systems\Embedded Workbench 4.0\avr\INC\CLIB\"           #
#                    --eeprom_size 4096                                      #
#    List file    =  C:\Documents and Settings\andeaper\My                   #
#                    Documents\QVCS\Appnotes\AVR109 Self Programming\Source  #
#                    Code\IAR\ATmega2560\Debug\List\serial.lst               #
#    Object file  =  C:\Documents and Settings\andeaper\My                   #
#                    Documents\QVCS\Appnotes\AVR109 Self Programming\Source  #
#                    Code\IAR\ATmega2560\Debug\Obj\serial.r90                #
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C:\Documents and Settings\andeaper\My Documents\QVCS\Appnotes\AVR109 Self Programming\Source Code\IAR\ATmega2560\serial.c
      1          /*****************************************************************************
      2          *
      3          * Atmel Corporation
      4          *
      5          * File              : serial.c
      6          * Compiler          : IAR C 3.10C Kickstart
      7          * Revision          : $Revision: 2.0 $
      8          * Date              : $Date: Tuesday, November 29, $
      9          * Updated by        : $Author: raapeland $
     10          *
     11          * Support mail      : [e-mail]
     12          *
     13          * Target platform   : All AVRs with bootloader support
     14          *
     15          * AppNote           : AVR109 - Self-programming
     16          *
     17          * Description       : UART communication routines
     18          ****************************************************************************/
     19          #include "defines.h"

   \                                 In segment ABSOLUTE, at 0xc6
   \   union <unnamed> volatile __io _A_UDR0
   \                     _A_UDR0:
   \   00000000                      DS 1

   \                                 In segment ABSOLUTE, at 0xc4
   \   union <unnamed> volatile __io _A_UBRR0
   \                     _A_UBRR0:
   \   00000000                      DS 2

   \                                 In segment ABSOLUTE, at 0xc1
   \   union <unnamed> volatile __io _A_UCSR0B
   \                     _A_UCSR0B:
   \   00000000                      DS 1

   \                                 In segment ABSOLUTE, at 0xc0
   \   union <unnamed> volatile __io _A_UCSR0A
   \                     _A_UCSR0A:
   \   00000000                      DS 1
     20          
     21          

   \                                 In segment FARCODE, align 2, keep-with-next
     22          void initbootuart()
   \                     initbootuart:
     23          {
     24            BAUD_RATE_LOW_REG = BRREG_VALUE;
   \   00000000   E001               LDI     R16, 1
   \   00000002   930000C4           STS     196, R16
     25            UART_CONTROL_REG = (1 << ENABLE_RECEIVER_BIT) |
     26                               (1 << ENABLE_TRANSMITTER_BIT); // enable receive and transmit 
   \   00000006   E108               LDI     R16, 24
   \   00000008   930000C1           STS     193, R16
     27          }
   \   0000000C   9508               RET
     28          
     29          

   \                                 In segment FARCODE, align 2, keep-with-next
     30          void sendchar(char c)
   \                     sendchar:
     31          {
     32            UART_DATA_REG = c;                                   // prepare transmission
   \   00000000   930000C6           STS     198, R16
     33            while (!(UART_STATUS_REG & (1 << TRANSMIT_COMPLETE_BIT)));// wait until byte sendt
   \                     ??sendchar_0:
   \   00000004   911000C0           LDS     R17, 192
   \   00000008   2F21               MOV     R18, R17
   \   0000000A   FF26               SBRS    R18, 6
   \   0000000C   CFFB               RJMP    ??sendchar_0
     34            UART_STATUS_REG |= (1 << TRANSMIT_COMPLETE_BIT);          // delete TXCflag
   \   0000000E   911000C0           LDS     R17, 192
   \   00000012   6410               ORI     R17, 0x40
   \   00000014   931000C0           STS     192, R17
     35          }
   \   00000018   9508               RET
     36          
     37          

   \                                 In segment FARCODE, align 2, keep-with-next
     38          char recchar(void)
   \                     recchar:
   \                     ??recchar_0:
     39          {
     40            while(!(UART_STATUS_REG & (1 << RECEIVE_COMPLETE_BIT)));  // wait for data
   \   00000000   910000C0           LDS     R16, 192
   \   00000004   2F10               MOV     R17, R16
   \   00000006   FF17               SBRS    R17, 7
   \   00000008   CFFB               RJMP    ??recchar_0
     41            return UART_DATA_REG;
   \   0000000A   910000C6           LDS     R16, 198
   \   0000000E   9508               RET
     42          }

   Maximum stack usage in bytes:

     Function     CSTACK RSTACK
     --------     ------ ------
     initbootuart     0      3
     recchar          0      3
     sendchar         0      3


   Segment part sizes:

     Function/Label Bytes
     -------------- -----
     _A_UDR0           1
     _A_UBRR0          2
     _A_UCSR0B         1
     _A_UCSR0A         1
     initbootuart     14
     sendchar         26
     ??recchar_0      16

 
  5 bytes in segment ABSOLUTE
 56 bytes in segment FARCODE
 
 56 bytes of CODE memory
  0 bytes of DATA memory (+ 5 bytes shared)

Errors: none
Warnings: none