DSC MC56F8366控制板资料

只看该作者 · 2015-7-26 18:45

在之前新能源的一个项目中，使用MC56F8366作为控制器并顺利结题，时过境迁，把DSC最小系统及控制部分发上来，
由于DSC的控制器需要替代之前的产品，接口已经固定，因此走线不完全合理。
首先是最小系统

复位电路、晶振

电源及滤波：

485通信电路

DSC.rar (624.36 KB)

只看该作者 · 2015-7-26 18:46

还有个温度传感器的例程：
; -------------------------------------------------------
;
;    56F83x_init.asm
;
; Metrowerks, a Freescale Company
; sample code
;
; description:  main entry point to C code.
;                   setup runtime for C and call main
;
; -------------------------------------------------------

;===============================
; OMR mode bits
;===============================
NL_MODE                                                       EQU  $8000
CM_MODE                                                       EQU  $0100
XP_MODE                                                       EQU  $0080
R_MODE                                                          EQU  $0020
SA_MODE                                                       EQU  $0010
;===============================
; init
;===============================
      section startup
      XREF  F_stack_addr
      XREF  F_xROM_to_xRAM
      XREF  F_pROM_to_xRAM
      XREF  F_Ldata_size
      XREF  F_Ldata_ROM_addr
      XREF  F_Ldata_RAM_addr
      org p:

      GLOBAL Finit_56800_
      SUBROUTINE "Finit_56800_",Finit_56800_,Finit_56800_END-Finit_56800_
Finit_56800_:
;
; setup the OMr with the values required by C
;
      bfset #NL_MODE,omr ; ensure NL=1  (enables nsted DO loops)
      nop
      nop
      bfclr #(CM_MODE|XP_MODE|R_MODE|SA_MODE),omr             ; ensure CM=0  (optional for C)
                                                               ; ensure XP=0 to enable harvard architecture
                                                               ; ensure R=0  (required for C)
                                                               ; ensure SA=0 (required for C)

; setup the m01 register for linear addressing
      move.w  #-1,x0
      moveu.w x0,m01                ; set the m register to linear addressing
      moveu.w hws,la                ; clear the hardware stack
      moveu.w hws,la
      nop
      nop

CALLMAIN:                            ; initialize compiler environment
                                    ; initialize the Stack
      move.l  #>>F_Lstack_addr,r0
      bftsth  #$0001,r0
      bcc    noinc
      adda #1,r0
noinc:
      tfra r0,sp                ; set stack pointer too
      move.w  #0,r1
      nop
      move.w  r1,x:(sp)             ; put zero at top of stack
      adda #1,sp                ; increment stack
      move.w  r1,x:(sp)             ; put another zero

; Stationery default routine
; 56800E LC register doesn't have 8191 element limitation of 56800
; so we can use hardware loop here
; zeroBSS hardware loop utility
      move.l  #>>F_Xbss_length,r2    ; move count
      move.l  #>>F_Xbss_start_addr,r1 ; start address is BSS start
      move.w  #0,x0                ; zero value
      nop
      do    r2,>>end_zeroBSS       ; copy for r2 times
      nop
      move.w  x0,x:(r1)+             ; stash value at x address r1
end_zeroBSS:

; xROM-to-xRAM utility
      nop
      move.w  #F_xROM_to_xRAM,r0    ; check for the option
      tst.w r0
      beq    end_xrom2xram          ; if no xROM-to-xRAM, then exit
      nop
      move.l  #>>F_Ldata_size,r2    ; set data size
      move.l  #>>F_Ldata_ROM_addr,r3  ; src address -- xROM data start
      move.l  #>>F_Ldata_RAM_addr,r1  ; dest address -- xRAM data start
      do    r2,>>end_xrom2xram    ; copy for r2 times
      move.w  x:(r3)+,x0             ; fetch value at address r3
      nop
      nop
      nop
      move.w  x0,x:(r1)+             ; stash value at address r1
end_xrom2xram:

; pROM-to-xRAM utility
      nop
      move.w  #F_pROM_to_xRAM,r0    ; check for the option
      tst.w r0
      beq    end_prom2xram          ; if no pROM-to-xRAM, then exit
      nop
      move.l  #>>F_Ldata_size,r2    ; set data size
      move.l  #>>F_Ldata_ROM_addr,r3  ; src address -- pROM data start
      move.l  #>>F_Ldata_RAM_addr,r1  ; dest address -- xRAM data start
      do    r2,>>end_prom2xram    ; copy for r2 times
      move.w  p:(r3)+,x0             ; fetch value at address r3
      nop
      nop
      nop
      move.w  x0,x:(r1)+             ; stash value at address r1
end_prom2xram:

; call main()
      move.w  #0,y0                ; pass parameters to main()
      move.w  #0,R2
      move.w  #0,R3
      jsr    Fmain                ; call the user program
loop_at_end_of_app:
      debughlt
      bra loop_at_end_of_app
Finit_56800_END:
      endsec