Easy way to do multiple write statements ?

[richard]

the "EXT" modifier make this a breeze , see if you can follow this example

  
    amps         Var Word   ext    ;chg mA
    volts        Var Word   ext    ;chg V
    kp           var word   ext
    kd           var word   ext
    ki           var word   ext
    f_0        var byte   ext
    f_1        var byte   ext
    f_2        var byte   ext
    f_3        var byte   ext
    setpoint     var word   ext   ;out volts
    cl           var word   ext   ;current limit
    flgs         VAR byte   ext
    drive        var word   ext   ;current pwm value
    a_cal        var word   ext
    v_cal        var word   ext
    bat_r        Var byte   ext    ;bits 0:3 is batt being charged , 4:7  batt connected flg
    data_blk        var byte[26]
 
asm
volts    = _data_blk   ;01
amps     = _data_blk+2 ;23
flgs     = _data_blk+4 ;4
drive    = _data_blk+5 ; 56
F_0      = _data_blk+7
F_1      = _data_blk+8
F_2      = _data_blk+9
F_3      = _data_blk+10
setpoint = _data_blk+11 ;1112
bat_r    = _data_blk+13   
ki       = _data_blk+14 ;1415
cl       = _data_blk+16   
kp       = _data_blk+18   
kd       = _data_blk+20   
a_cal    = _data_blk+22  
v_cal    = _data_blk+24 ;2425

endasm

to save

for n =0 to 25
write n, [data_blk[n]]
next n

to read

for n =0 to 25
read n, [data_blk[n]]
next n

to just save vars f_0 to f_3

for n =7 to 10 
write n, [data_blk[n]]
next n

or even better

for n =0 to 3 
write n, [f_0[n]]
next n

[Ioannis]

Richard,

what is the difference in using EXT ant this one?

data_blk  var byte [25]
f_0       var data_blk[7]

Ioannis

[richard]

ioannis


data_blk var byte [25] this reserves 25 bytes for our data

f_0 var data_blk[7] would definitely point to the correct byte but if you add or delete or rearrange or modify any vars in the array you have to go back and make sure the index is corrected , its easy to make a mistake and forget

whereas :-

using
f_0 var byte ext the assembler does all the work and we still get an index-able byte sized pointer to use