Hello
SDCC : stm8 3.4.1 #9068 (Sep 5 2014) (Linux)
I dont see the difference between this :
I have _lcdchar declared by : which seems not working, at least the
way variables
are to mee in assembly ...
.area OSEG
_varOne:
.ds 1
_lcdchar:
.db 1
.area CSEG
.
.which seems not working, at least the way variables
are to mee in assembly ...
.
A)
;try write I ### this block doesnt work: prints
trash
ldw x, #0d05
call delay_m
mov _lcdchar, #0b01001001
ld a,_lcdchar ; "I" upper "i" : ascii code in the hd44780
and a,#0b11110000 ; delete lower nib
or a,#0b00000011 ; put in that : data write + bkl ON
ld PD_ODR, a ; #0b01000011
bset PD_ODR, #3
bres PD_ODR, #3
ldw x, #0d5
call delay_m
ld a,_lcdchar ; "I" upper "i" : ascii code in the hd44780
swap a
and a,#0b11110000 ; delete lower nib
or a,#0b00000011 ; put in that : data write + bkl ON
ld PD_ODR, a
bset PD_ODR, #3
bres PD_ODR, #3
And that:
B)
;try write I ### this block writes a capital i .
ldw x, #0d05
call delay_m
ld a,#0b01001001 ; "I" upper "i" : ascii code in the hd44780
and a,#0b11110000 ; delete lower nib
or a,#0b00000011 ; put in that : data write + bkl ON
ld PD_ODR, a ; #0b01000011
bset PD_ODR, #3
bres PD_ODR, #3
ldw x, #0d5
call delay_m
ld a,#0b01001001 ; "I" upper "i" : ascii code in the hd44780
swap a
and a,#0b11110000 ; delete lower nib
or a,#0b00000011 ; put in that : data write + bkl ON
ld PD_ODR, a
bset PD_ODR, #3
bres PD_ODR, #3
thnx again for stm8 support ! :)
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