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viki



Joined: 03 Jan 2006
Posts: 40
Location: Czestochowa, Poland
viki 27 Jul 2006, 06:57
Hello. This is a small ComMonitor.com file for monitoring rs232 communication. With colours there is a info about RTS and DSR status and uart errors. There is also a small parser for not 'standard' characters and digits. This is a very first version so there is still a lot things to do:
- testing
- display scrolling
- configuration screen when 'c' key pressed
- new line when RTS status changed and time stamp for each line
- moving it to dex4u os.

Code:
PORT1 = 3f8h
THR = 0     ;Transmitter Holding Reg
RBR = 0     ;Reciver Buffer Reg
IER = 1     ;Interrupt Enable Reg
IIR = 2     ;Interrupt Identyfication Reg
LCR = 3     ;Line Control Reg
MCR = 4     ;Modem Control Reg
LSR = 5     ;Line Status Reg
MSR = 6     ;Modem Status Reg

INT_ON_RxD  = 0x01
INT_ON_TxD  = 0x02
INT_ON_LINE_STATUS  = 0x04
INT_ON_MODEM_STATUS = 0x08

DATA_LEN_5  = 0x00
DATA_LEN_6  = 0x01
DATA_LEN_7  = 0x02
DATA_LEN_8  = 0x03

STOP_BIT_1  = 0x00
STOP_BIT_2  = 0x04

PARITY_NO     = 0x00
PARITY_ODD  = 0x08
PARITY_EVEN = 0x18
PARITY_HIGH = 0x28
PARITY_LOW  = 0x38 

BR_115200 = 0x01
BR_57600  = 0x02
BR_38400  = 0x03
BR_19200  = 0x06
BR_9600   = 0x0C
BR_4800   = 0x18
BR_2400   = 0x30  

  org 100h

macro cinvoke proc,[arg]    ; indirectly call CDECL procedure
{
  common
    size@ccall = 0
  reverse
    push arg
    size@ccall = size@ccall+2
  common
    call proc
    add sp,size@ccall
}

;-- -----------------------------------------------------------------------
macro outb port_nr,data
;-------------------------------------------------------------------------
{
    mov     dx , port_nr
    mov     al , data
    out     dx , al
}

;-------------------------------------------------------------------------
macro in_b port_nr
;-------------------------------------------------------------------------
{
    mov     dx , port_nr
    in    al , dx
}

    call     SetPalette
    cinvoke _getvect,12
    mov word [old_vect],dx
    mov word [old_vect+2],ax
    cinvoke _setvect,12,com_int,ds
    call    ComMoni;
    cinvoke _setvect,12,word [old_vect+2],word [old_vect]
    cinvoke _delay,2
    ret

;-------------------------------------------------------------------------
com_int:
;-------------------------------------------------------------------------
    pusha
    push  ds
    push  cs
    pop   ds
    in_b  PORT1 + LSR
    test  al,1
    je  @f
    mov   cl,al
    and   cl,0x0f
    in_b  PORT1
    mov   bx,[io_buf_end]
    mov   [io_buf+bx],al
    in_b  PORT1 + MSR
    shl   al,2
    push  ax
    and   al,0xc0
    pop   dx
    shl   dl,2
    and   dl,0x30
    or    al,dl
    or    cl,al
    mov [io_buf+bx+1],cl
    add byte[io_buf_end],2
    inc [icnt]
@@:
    outb  0x20 , 0x20
    pop ds
    popa
    iret

;-------------------------------------------------------------------------
_getvect:
;-------------------------------------------------------------------------
    push    bp
    mov   bp,sp
    push    es
    mov   ah, 035h
    mov   al, [bp+4]
    int   021h
    xchg    ax,bx
    mov   dx,es
    pop   es
    pop   bp
    ret

;-------------------------------------------------------------------------
_setvect:
;-------------------------------------------------------------------------
    push    bp
    mov     bp,sp
    mov     ah, 025h
    mov     al, [bp+4]
    push    ds
    lds     dx, [bp+6]
    int     021h
    pop     ds
    pop     bp
    ret

;-------------------------------------------------------------------------
com_setup:  ;in bl - baudrate
;-------------------------------------------------------------------------
    outb    PORT1 + LCR , 0x80  ;SET DLAB ON
    outb   PORT1 + RBR , bl       ;Set Baud rate - Divisor Latch Low Byte
    outb   PORT1 + IER,0x00 ;Set Baud rate - Divisor Latch High Byte
    outb   PORT1 + LCR , DATA_LEN_8 or STOP_BIT_1 or PARITY_NO
    outb   PORT1 + IIR , 0xC7 ;FIFO Control Register
    outb   PORT1 + MCR , 0x0B ;Turn on DTR, RTS, and OUT2
    outb   PORT1 + IER , 1
    in_b   0x21
    and    al , 0x0ef
      ;COM1,3 (IRQ4) - 0xEF
      ;COM2,4 (IRQ3) - 0xF7
    out  21h, al   ;Set Programmable Interrupt Controller
    in_b   PORT1+MSR
    in_b    PORT1
    ret

;-------------------------------------------------------------------------
_delay:
;-------------------------------------------------------------------------
    push   bp
    mov    bp,sp
    push   ax
    push   cx
    mov    cx, [bp+4]
    mov    ax,8600h
    int    15h
    pop    cx
    pop    ax
    pop    bp
    ret

;-------------------------------------------------------------------------
_cread:
;-------------------------------------------------------------------------
    push  bp
    mov   bp,sp
    push  si
    mov   si,[bp + 6]
crl1:
    cinvoke _delay,1
    mov   ax,[io_buf_end]
    cmp   ax,[bp + 4]
    jb    crl3
    mov   ax,[io_buf_end]
    jmp   crl4
crl3:
    dec   si
    jne   crl1
crl4:
    pop   si
    pop   bp
    ret

;-------------------------------------------------------------------------
_cwrite:
;-------------------------------------------------------------------------
    push   bp
    mov    bp,sp
    push   si
    mov    [io_buf_end],0
    cinvoke _delay,2
    mov    cx , [bp+6]
    mov    si , [bp+4]
@@:
    in_b   PORT1 + LSR
    test   al , 020H
    je     @b
    lodsb
    mov    dx , 03F8H
    out    dx , al
    dec    cx
    jne    @b
    pop     si
    pop     bp
    ret

;-------------------------------------------------------------------------
kbhit:
;-------------------------------------------------------------------------
    mov     ah, 0Bh
    int     21h
    cbw
    ret

;-------------------------------------------------------------------------
cs_conv:
;-------------------------------------------------------------------------
    push edi
@@:
     lodsw
     cmp  al , 'z'
     jg  parse
     cmp  al , ' '
     jl  parse
no_parse:
     stosw
     jmp  pend
parse:
     push eax
      push eax
       mov  al,'['
       stosw
      pop  eax
      and  al,0xf0
      shr  al,4
      call hextoc
      stosw
     pop  eax
     and  al,0x0f
     call hextoc
     stosw
     mov  al,']'
     stosw
pend:
     dec cx
     jne @b
    pop ecx
    mov eax,edi
    sub eax,ecx
    ret

;-------------------------------------------------------------------------
hextoc:
;-------------------------------------------------------------------------
    add al,'0'
    cmp al,'9'
    jle @f
    add al,39
@@: ret

;-------------------------------------------------------------------------
move32:
;-------------------------------------------------------------------------
shr cx,1
    jnc @f
    movsb
@@: shr cx,1
    jnc @f
    movsw
@@: rep movsd
ret

;------------------------------------------------------------------------
setvga:
;------------------------------------------------------------------------
  mov dx,03dah
  in al,dx
  mov dx,03c0h
  mov al,10h              ;read mode control register
  out dx,al
  mov dx,03c1h
  in  al,dx
  and al,0f7h             ;erase bits for 16 backgroung colors,
  mov ah,al               ;instead of 8 and blinking
  mov dx,03dah
  in al,dx
  mov dx,03c0h
  mov al,10h
  out dx,al
  mov al,ah               ;write new value to mode control register
  out dx,al
  mov al,30h
  out dx,al
  ret

;-------------------------------------------------------------------------
SetPalette:
;-------------------------------------------------------------------------
  call setvga
        mov si, Pal
        mov cx,16
SPal:
        mov dx,0x03c8
        outsb
        inc dx
        outsb
        outsb
        outsb
        loop SPal
  ret

;-------------------------------------------------------------------------
  ComMoni:
;-------------------------------------------------------------------------
    mov  bl,BR_115200
    call    com_setup
MainLoop:
    xor  cx , cx
    mov  dx , [io_buf_end]
    cmp  dx , [io_buf_beg]
    jz   no_data
    jnl  @f
    mov  cx , 256
@@:
    sub  dx , [io_buf_beg]
    add  cx , dx
    shr  cx , 1
    mov  si , io_buf
    add  si , [io_buf_beg]
    mov  di , wk_buf
    add  di , [wk_buf_end]
    call cs_conv
    mov  [parsed],ax
    add  [wk_buf_end],ax
    add  byte[io_buf_beg],2
    mov  cx , [wk_buf_end]
    sub  cx , [wk_buf_beg]
    jz   no_data
    push es
    push 0xb800
    pop  es
    mov  si,wk_buf
    add  si,[wk_buf_beg]
    mov  di,0
    add  di,[sc_buf_end]
    push cx
    call move32
    pop  cx
    add  [sc_buf_end],cx
    add  [wk_buf_beg],cx
    pop  es
no_data:
    call  kbhit
    or    ax,ax
    je    MainLoop
    ret


Pal:
    db 000h,01ah,022h,018h ; 0 dark green
    db 001h,026h,02eh,020h ; 1 grass
    db 002h,032h,038h,02eh ; 2 light green
    db 003h,038h,038h,026h ; 3 yellow
    db 004h,03ah,034h,024h ; 4 orange
    db 005h,032h,028h,01eh ; 5 kakao
    db 014h,02eh,02ch,024h ; 6 gray brown
    db 03ch,02eh,02ah,01ch ; c light brown
    db 038h,016h,00ah,000h ; 8 dark brown
    db 039h,026h,01eh,028h ; 9 dark violet
    db 03ah,02ch,028h,02eh ; a light violet
    db 03bh,01eh,032h,02ch ; b light navy
    db 007h,016h,02eh,02ch ; 7 dark navy
    db 03dh,016h,024h,02eh ; d blue
    db 03eh,02ah,02ah,02ah ; e gray
    db 03fh,000h,000h,000h ; f black


    old_vect   dd ?
    parsed     dw ?
    icnt       dw ?
    io_buf_end dw 0
    io_buf_beg dw 0
    wk_buf_end dw 0
    wk_buf_beg dw 0
    sc_buf_end dw 0
    sc_buf_beg dw 0
    align 16
    io_buf rb 256
    wk_buf db ?


Last edited by viki on 27 Jul 2006, 11:52; edited 1 time in total
Post 27 Jul 2006, 06:57
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vid
Verbosity in development


Joined: 05 Sep 2003
Posts: 7105
Location: Slovakia
vid 27 Jul 2006, 09:46
viki: you could rewrite comments to english and let Tomasz place this to examples
Post 27 Jul 2006, 09:46
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viki



Joined: 03 Jan 2006
Posts: 40
Location: Czestochowa, Poland
viki 27 Jul 2006, 11:55
ok I've changed the comments buy I'm affraid it's not reall clear to put it as an example. This version is stable Wink and allow to exced more than 8000 datas.

Code:
PORT1 = 3f8h
THR = 0     ;Transmitter Holding Reg
RBR = 0     ;Reciver Buffer Reg
IER = 1     ;Interrupt Enable Reg
IIR = 2     ;Interrupt Identyfication Reg
LCR = 3     ;Line Control Reg
MCR = 4     ;Modem Control Reg
LSR = 5     ;Line Status Reg
MSR = 6     ;Modem Status Reg

INT_ON_RxD          = 0x01
INT_ON_TxD          = 0x02
INT_ON_LINE_STATUS  = 0x04
INT_ON_MODEM_STATUS = 0x08

DATA_LEN_5  = 0x00
DATA_LEN_6  = 0x01
DATA_LEN_7  = 0x02
DATA_LEN_8  = 0x03

STOP_BIT_1  = 0x00
STOP_BIT_2  = 0x04

PARITY_NO   = 0x00
PARITY_ODD  = 0x08
PARITY_EVEN = 0x18
PARITY_HIGH = 0x28
PARITY_LOW  = 0x38 

BR_115200 = 0x01
BR_57600  = 0x02
BR_38400  = 0x03
BR_19200  = 0x06
BR_9600   = 0x0C
BR_4800   = 0x18
BR_2400   = 0x30

SCR_SIZE  = 8000
LN_LEN    = 160

  org 100h

;-------------------------------------------------------------------------
macro cinvoke proc,[arg]    ; indirectly call CDECL procedure
;-------------------------------------------------------------------------
{
  common
    size@ccall = 0
  reverse
    push arg
    size@ccall = size@ccall+2
  common
    call proc
    add sp,size@ccall
}

;-------------------------------------------------------------------------
macro outb port_nr,data
;-------------------------------------------------------------------------
{
    mov     dx , port_nr
    mov     al , data
    out     dx , al
}

;-------------------------------------------------------------------------
macro in_b port_nr
;-------------------------------------------------------------------------
{
    mov     dx , port_nr
    in      al , dx
}

;-------------------------------------------------------------------------
Start:
;-------------------------------------------------------------------------
    call     set80x50
    call     SetPalette
    call     ClrScr
    call     cursor_off
    cinvoke  _getvect,12
    mov word [old_vect],dx
    mov word [old_vect+2],ax
    cinvoke  _setvect,12,com_int,ds
    mov      bl,BR_115200
    call     com_setup
    call     ComMoni
    call     cursor_on
    cinvoke  _setvect,12,word [old_vect+2],word [old_vect]
    ret

;-------------------------------------------------------------------------
com_int:
;-------------------------------------------------------------------------
    pusha
    push  ds
    push  cs
    pop   ds
    in_b  PORT1 + LSR
    test  al,1
    je  @f
    mov   cl,al
    and   cl,0x0f
    in_b  PORT1
    mov   ebx,[io_end]
    mov   [io_buf+ebx],al
    in_b  PORT1 + MSR
    shl   al,2
    push  ax
    and   al,0xc0
    pop   dx
    shl   dl,2
    and   dl,0x30
    or    al,dl
    or    cl,al
    mov [io_buf+ebx+1],cl
    add   byte[io_end],2
    inc   [icnt]
@@:
    outb  0x20 , 0x20
    pop ds
    popa
    iret

;-------------------------------------------------------------------------
_getvect:
;-------------------------------------------------------------------------
    push    bp
    mov   bp,sp
    push    es
    mov   ah, 035h
    mov   al, [bp+4]
    int   021h
    xchg    ax,bx
    mov   dx,es
    pop   es
    pop   bp
    ret

;-------------------------------------------------------------------------
_setvect:
;-------------------------------------------------------------------------
    push    bp
    mov     bp,sp
    mov     ah, 025h
    mov     al, [bp+4]
    push    ds
    lds     dx, [bp+6]
    int     021h
    pop     ds
    pop     bp
    ret

;-------------------------------------------------------------------------
com_setup:  ;in bl - baudrate
;-------------------------------------------------------------------------
    outb    PORT1 + LCR , 0x80  ;SET DLAB ON
    outb   PORT1 + RBR , bl       ;Set Baud rate - Divisor Latch Low Byte
    outb   PORT1 + IER,0x00 ;Set Baud rate - Divisor Latch High Byte
    outb   PORT1 + LCR , DATA_LEN_8 or STOP_BIT_1 or PARITY_NO
    outb   PORT1 + IIR , 0xC7 ;FIFO Control Register
    outb   PORT1 + MCR , 0x0B ;Turn on DTR, RTS, and OUT2
    outb   PORT1 + IER , 1
    in_b   0x21
    and    al , 0x0ef
      ;COM1,3 (IRQ4) - 0xEF
      ;COM2,4 (IRQ3) - 0xF7
    out  21h, al   ;Set Programmable Interrupt Controller
    in_b   PORT1+MSR
    in_b    PORT1
    ret

;-------------------------------------------------------------------------
kbhit:
;-------------------------------------------------------------------------
    mov     ah, 0Bh
    int     21h
    cbw
    ret

;-------------------------------------------------------------------------
cs_conv:
;-------------------------------------------------------------------------
    push edi
@@:
     lodsw
     cmp  al , 'z'
     jg  parse
     cmp  al , ' '
     jl  parse
no_parse:
     stosw
     jmp  pend
parse:
     push eax
      push eax
       mov  al,'['
       stosw
      pop  eax
      and  al,0xf0
      shr  al,4
      call hextoc
      stosw
     pop  eax
     and  al,0x0f
     call hextoc
     stosw
     mov  al,']'
     stosw
pend:
     dec cx
     jne @b
    pop ecx
    mov eax,edi
    sub eax,ecx
    ret

;-------------------------------------------------------------------------
hextoc:
;-------------------------------------------------------------------------
    add al,'0'
    cmp al,'9'
    jle @f
    add al,39
@@: ret

;-------------------------------------------------------------------------
move32:
;-------------------------------------------------------------------------
    shr ecx,1
    jnc @f
    movsb
@@: shr ecx,1
    jnc @f
    movsw
@@: rep movsd
ret

;-------------------------------------------------------------------------
fill32:
;-------------------------------------------------------------------------
    shr ecx,1
    jnc @f
    stosb
@@: shr ecx,1
    jnc @f
    stosw
@@: rep stosd
ret

;------------------------------------------------------------------------
cursor_on:
;------------------------------------------------------------------------
    outb  0x3d4,0x0a
    outb  0x3d5,0x0d
    outb  0x3d4,0x0b
    outb  0x3d5,0x0d
    ret

;------------------------------------------------------------------------
cursor_off:
;------------------------------------------------------------------------
    outb  0x3d4,0x0a
    outb  0x3d5,0x01
    outb  0x3d4,0x0b
    outb  0x3d5,0x00
    ret

;------------------------------------------------------------------------
set80x50:
;------------------------------------------------------------------------
    mov ax,0003h
    int 10h
    mov ax,1112h
    xor bl,bl
    int 10h
    ret

;------------------------------------------------------------------------
setvga:
;------------------------------------------------------------------------
  mov dx,03dah
  in al,dx
  mov dx,03c0h
  mov al,10h              ;read mode control register
  out dx,al
  mov dx,03c1h
  in  al,dx
  and al,0f7h             ;erase bits for 16 backgroung colors,
  mov ah,al               ;instead of 8 and blinking
  mov dx,03dah
  in al,dx
  mov dx,03c0h
  mov al,10h
  out dx,al
  mov al,ah               ;write new value to mode control register
  out dx,al
  mov al,30h
  out dx,al
  ret

;-------------------------------------------------------------------------
SetPalette:
;-------------------------------------------------------------------------
    call setvga
    mov si, Pal
    mov cx,16
SPal:
    mov dx,0x03c8
    outsb
    inc dx
    outsb
    outsb
    outsb
    loop SPal
    ret

;-------------------------------------------------------------------------
  ClrDisp: ;in edi - dst, eax - pattern, ecx - counter
;-------------------------------------------------------------------------
    push es
    push 0xb800
    pop  es
    call fill32
    pop  es
    ret

;-------------------------------------------------------------------------
  ClrScr:
;-------------------------------------------------------------------------
    pusha
    mov  edi,0
    mov  ecx,SCR_SIZE
    mov  eax,0xf120f120
    call ClrDisp
    popa
    ret

;-------------------------------------------------------------------------
  ClrLastLine:
;-------------------------------------------------------------------------
    pusha
    mov  edi,SCR_SIZE-160
    mov  ecx,160
    mov  eax,0x01200120
    call ClrDisp
    popa
    ret


;-------------------------------------------------------------------------
  DispData: ;in esi - scr, edi - dst, ecx - counter
;-------------------------------------------------------------------------
    push es
    push 0xb800
    pop  es
    call move32
    pop  es
    ret


;-------------------------------------------------------------------------
  ComMoni:
;-------------------------------------------------------------------------
    mov  ecx , [io_end]
    sub  ecx , [io_beg]       ; io_dif = io_end - io_beg;
    jz   no_data              ; if(!io_dif) goto no_data;
    jnl  @f                   ; if(io_dif<0) 
    add  ecx , 256            ;    io_dif += io_size
@@:
    shr  ecx , 1              ; io_dif /= 2;
    mov  esi , io_buf
    add  esi , [io_beg]
    mov  edi , [wk_end]
    call cs_conv              ; parsed = cs_conv(wk_end,io_beg,io_dif);
    mov  [parsed] , eax
    add  [wk_end] , eax       ; wk_end += parsed;
    add  byte[io_beg],2       ; io_beg += 2;
    mov  ecx , [wk_end]
    sub  ecx , [wk_beg]       ; dif_wk = wk_end - wk_beg
    cmp  ecx , SCR_SIZE       ; if(dif_wk > sc_size)
    jg   sc_scroll            ;   goto sc_scroll
    mov  ecx , [wk_end]        
    sub  ecx , [parsed]
    mov  esi , ecx            ; src = wk_end - parsed
    mov  edi , [sc_end]       ; dst = sc_end
    mov  ecx , [parsed]       ; cnt = parsed
    jmp  sc_update
sc_scroll:
    call ClrLastLine          ; ClrLastLine();
    add  [wk_beg] , LN_LEN    ; wk_bed += LN_LEN
    sub  ecx , LN_LEN         ; wk_dif -= LN_LEN
    mov  [sc_end] , 0         ; sc_end = 0
    mov  esi,[wk_beg]         ; src = wk_beg
    mov  edi,[sc_beg]         ; dst = sc_beg
sc_update:                    ; cnt = wk_dif
    push ecx
    call DispData
    pop  ecx
    add  [sc_end] , ecx
no_data:
    call  kbhit
    or    ax,ax
    je    ComMoni
    ret


Pal:
    db 000h,01ah,022h,018h ; 0 dark green
    db 001h,026h,02eh,020h ; 1 grass
    db 002h,032h,038h,02eh ; 2 light green
    db 003h,038h,038h,026h ; 3 yellow
    db 004h,03ah,034h,024h ; 4 orange
    db 005h,032h,028h,01eh ; 5 kakao
    db 014h,02eh,02ch,024h ; 6 gray brown
    db 03ch,02eh,02ah,01ch ; c light brown
    db 038h,016h,00ah,000h ; 8 dark brown
    db 039h,026h,01eh,028h ; 9 dark violet
    db 03ah,02ch,028h,02eh ; a light violet
    db 03bh,01eh,032h,02ch ; b light navy
    db 007h,016h,02eh,02ch ; 7 dark navy
    db 03dh,016h,024h,02eh ; d blue
    db 03eh,02ah,02ah,02ah ; e gray
    db 03fh,000h,000h,000h ; f black


    old_vect  dd  ?
    icnt      dw  ?
    parsed    dd  0
    io_end    dd  0
    io_beg    dd  0
    wk_end    dd  wk_buf
    wk_beg    dd  wk_buf
    sc_end    dd  0
    sc_beg    dd  0
    
align 16
    io_buf    rb  256
    wk_buf    db  ?


Description: Block diagram for main function
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Filename: ComMoni.pdf
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Post 27 Jul 2006, 11:55
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