/
pd8544.fs
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pd8544.fs
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\ STM8S103 PD8544 "Nokia 3110 LCD"
\ requires configuration-words with port DDR address and bit numbers
\ see Example section below
\ refer to github.com/TG9541/stm8ef/blob/master/LICENSE.md
\ send c through SPI, discard input
: LCDout ( c -- )
[ 0 LCDsce ]B!
SPI
[ 1 LCDsce ]B!
DROP
;
\ set horizontal cursor to c ( 0..83 )
: LCDx ( c -- )
[ 0 LCDdc ]B!
$80 + LCDout
[ 1 LCDdc ]B!
;
\ set vertical cursor to c ( 0..5 )
: LCDy ( c -- )
[ 0 LCDdc ]B!
$40 + LCDout
[ 1 LCDdc ]B!
;
\ set cursor to (0,0)
: LCDhome ( -- )
0 LCDx 0 LCDy
;
\ fill LCD with pattern c (use y auto increment)
: LCDfill ( c -- )
LCDhome
503 FOR
DUP LCDout
NEXT DROP
;
\ init ports, SPI, PD8544 with Vop c (0..127)
: LCDinit ( c -- )
[ 0 LCDdc ]B!
$21 LCDout \ instructions extended
$14 LCDout \ bias 4
$80 + LCDout \ Vop, e.g. 60
$20 LCDout \ instructions normal
$0C LCDout \ display conf ($08:blank,$09:on,$0C:normal,$0D:inv)
[ 1 LCDdc ]B!
0 LCDfill
;
\ copy n chars starting at a to PD8544
: LCDcpy ( a n -- )
FOR DUP C@ LCDout 1+ NEXT DROP
;
\\ Example:
#require ]C!
#require ]B!
\res MCU: STM8S103
\res export PC_ODR
\res export PC_DDR
\res export PC_CR1
: LCDsce ( -- n n )
\ configure port and bit# for chip enable (/SCE)
PC_ODR 3 \ PC3
;
: LCDdc ( -- n n )
\ configure port and bit# for data/command (D/C)
PC_ODR 4 \ PC4
;
\ peripheral register constants for spi.fs
\res export SPI_CR1
\res export SPI_CR2
\res export SPI_SR
\res export SPI_DR
NVM
#include hw/spi.fs
#include hw/pd8544.fs
: init
[ $18 PC_DDR ]C!
[ $18 PC_CR1 ]C!
1 SPIon
65 LCDinit \ init, set contrast value
;
RAM
\ test
init
$AA LCDfill \ fill the LCD with horizontal lines