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/*
* This file is subject to the terms of the GFX License. If a copy of
* the license was not distributed with this file, you can obtain one at:
*
* http://ugfx.org/license.html
*/
/* KS0107/0108 Driver
* Pinout: There are at least two different Pinouts!
* Version 1:
* 1 - CS1 High Active
* 2 - CS2 High Active
* 3 - GND
* 4 - 5V
* 5 - CONTRAST
* 6 - RS(=DC) High = Data, Low = Command
* 7 - R/W High = Read, Low = Write
* 8 - E Data is KS0108_latched at the falling Edge
* 9..16 - D0..7
* Version 2:
* 1 - GND
* 2 - 5V
* 3 - Vo (Operating Voltage for LCD)
* 4 - RS High = Data, Low = Command
* 5 - R/W High = Read, Low = Write
* 6 - E Data is KS0108_latched at the falling Edge
* 7..14 - D0..7
* 15 - CS1 High Active
* 16 - CS2 High Active
* 17 - /RST Low Active
* 18 - Vout (Output voltage for LCD)
* 19 - LEDA
* 20 - LEDK
*
*/
#ifndef _GDISP_LLD_BOARD_H
#define _GDISP_LLD_BOARD_H
// My Settings
#define GDISP_SCREEN_HEIGHT 64
#define GDISP_SCREEN_WIDTH 128
#define KS0108_NEED_READ GFXOFF
#define KS0108_HAS_RESET GFXOFF
#define KS0108_NEED_BACKLIGHT GFXOFF
#define KS0108_NEED_PWMBACKLIGHT GFXOFF
#define KS0108_NOP_DLY GFXON //doesn't work for me without!
#define LINE_D0 PAL_LINE(GPIOB, 0U)
#define LINE_D1 PAL_LINE(GPIOB, 1U)
#define LINE_D2 PAL_LINE(GPIOB, 2U)
#define LINE_D3 PAL_LINE(GPIOB, 3U)
#define LINE_D4 PAL_LINE(GPIOB, 4U)
#define LINE_D5 PAL_LINE(GPIOB, 5U)
#define LINE_D6 PAL_LINE(GPIOB, 6U)
#define LINE_D7 PAL_LINE(GPIOB, 7U)
#define LINE_BUSY PAL_LINE(GPIOB, 7U)
#define LINE_CS1 PAL_LINE(GPIOB, 8U)
#define LINE_CS2 PAL_LINE(GPIOB, 9U)
#define LINE_E PAL_LINE(GPIOB, 10U)
#define LINE_DC PAL_LINE(GPIOB, 11U)
#if KS0108_NEED_READ
#define LINE_RW PAL_LINE(GPIOB, 12U)
#endif
#if KS0108_NEED_BACKLIGHT
#define LINE_BL PAL_LINE(GPIOB, 13U)
#endif
#if KS0108_HAS_RESET
#define LINE_RESET PAL_LINE(GPIOB, 13U)
#endif
typedef struct {
ioline_t CS1; // Chip Select1 PIN
ioline_t CS2; // Chip Select2 PIN
ioline_t DC; // Register selector PIN
ioline_t E; // Enable PIN
ioline_t BUSY; // Busy PIN (Same as D[7])
#if KS0108_NEED_READ
ioline_t RW; // Read/Write PIN
#endif
#if KS0108_HAS_RESET
ioline_t RST; // Reset PIN
#endif
#if KS0108_NEED_BACKLIGHT
ioline_t BL; // Backlight PIN
#endif
ioline_t D[8];
ioline_t CS[CHIPS];
} lcd_pins_t;
/*===========================================================================*/
/* Driver local variables. */
/*===========================================================================*/
static const lcd_pins_t lcdpins = {
LINE_CS1,
LINE_CS2,
LINE_DC,
LINE_E,
LINE_BUSY,
#if KS0108_NEED_READ
LINE_RW,
#endif
#if KS0108_HAS_RESET
LINE_RST,
#endif
#if KS0108_NEED_BACKLIGHT
LINE_BL,
#endif
{
LINE_D0,
LINE_D1,
LINE_D2,
LINE_D3,
LINE_D4,
LINE_D5,
LINE_D6,
LINE_D7
},
{
LINE_CS1,
LINE_CS2
}
};
static GFXINLINE void init_board(GDisplay* g){
(void) g;
g->board = 0;
int ii;
for (ii = 0; ii < CHIPS; ii++){
palSetLineMode(lcdpins.CS[ii], PAL_MODE_OUTPUT_PUSHPULL);
palClearLine(lcdpins.CS[ii]);
}
palSetLineMode(lcdpins.DC, PAL_MODE_OUTPUT_PUSHPULL);
palClearLine(lcdpins.DC);
palSetLineMode(lcdpins.E, PAL_MODE_OUTPUT_PUSHPULL);
palSetLine(lcdpins.E);
#if KS0108_NEED_READ
palSetLineMode(lcdpins.RW, PAL_MODE_OUTPUT_PUSHPULL);
palClearLine(lcdpins.RW);
#endif
#if KS0108_HAS_RESET
palSetLineMode(lcdpins.RST, PAL_MODE_OUTPUT_PUSHPULL);
palSetLine(lcdpins.RST);
#endif
for(ii = 0; ii < 8; ii++) {
palSetLineMode(lcdpins.D[ii], PAL_MODE_OUTPUT_PUSHPULL);
palClearLine(lcdpins.D[ii]);
}
#if KS0108_NEED_BACKLIGHT
#if KS0108_NEED_PWMBACKLIGHT
palSetLineMode(lcdpins.BL, PAL_MODE_ALTERNATE(1));
#else
palSetLineMode(lcdpins.BL, PAL_MODE_OUTPUT_PUSHPULL);
#endif
#endif
}
static GFXINLINE void post_init_board(GDisplay *g) {
(void) g;
}
static GFXINLINE void setpin_reset(GDisplay *g, bool_t state) {
(void) g;
(void) state;
#if KS0108_HAS_RESET //Make Hardware Reset
if (state)
palClearLine(lcdpins.RST);
else
palSetLine(lcdpins.RST);
#endif
}
static GFXINLINE void set_backlight(GDisplay *g, uint8_t percent) {
(void) g;
(void) percent;
}
static GFXINLINE void acquire_bus(GDisplay *g) {
(void) g;
}
static GFXINLINE void release_bus(GDisplay *g) {
(void) g;
}
void KS0108_delay(uint16_t microsec){
#if KS0108_NOP_DLY
uint16_t cn;
for (cn=0;cn< microsec;cn++){
asm("nop");asm("nop");asm("nop");asm("nop");
asm("nop");asm("nop");asm("nop");asm("nop");
asm("nop");asm("nop");asm("nop");asm("nop");
asm("nop");asm("nop");asm("nop");asm("nop");
asm("nop");asm("nop");asm("nop");asm("nop");
asm("nop");asm("nop");asm("nop");asm("nop");
asm("nop");asm("nop");asm("nop");asm("nop");
asm("nop");asm("nop");asm("nop");asm("nop");
asm("nop");asm("nop");asm("nop");asm("nop");
asm("nop");asm("nop");asm("nop");asm("nop");
asm("nop");asm("nop");asm("nop");asm("nop");
asm("nop");asm("nop");asm("nop");asm("nop");
asm("nop");asm("nop");asm("nop");asm("nop");
asm("nop");asm("nop");asm("nop");asm("nop");
asm("nop");asm("nop");asm("nop");asm("nop");
asm("nop");asm("nop");asm("nop");asm("nop");
//asm("nop");asm("nop");asm("nop");asm("nop");
//asm("nop");asm("nop");asm("nop");asm("nop");
//1us
}
#else
gfxSleepMicroseconds(microsec);
#endif
}
static GFXINLINE void KS0108_latch(void){
palClearLine(lcdpins.E);
KS0108_delay(1);
palSetLine(lcdpins.E);
}
static GFXINLINE void KS0108_write(uint8_t value){
int ii;
for(ii = 0; ii < 8; ii++){
if(value & (1 << ii))
palSetLine(lcdpins.D[ii]);
else
palClearLine(lcdpins.D[ii]);
}
KS0108_delay(1);
}
static GFXINLINE void KS0108_select(uint8_t chip){
uint8_t ii;
KS0108_delay(1);
for (ii = 0; ii < CHIPS; ii++){
if (ii == chip)
palSetLine(lcdpins.CS[ii]);
}
KS0108_delay(1);
}
static GFXINLINE void KS0108_unselect(void){
uint8_t ii;
KS0108_delay(1);
for (ii = 0; ii < CHIPS; ii++){
palClearLine(lcdpins.CS[ii]);
}
}
/*
#if KS0108_NEED_READ //Hardware Read ############## WORKS more or less
static GFXINLINE uint8_t read_KS0108(void) {
uint8_t ii, data=0;
for(ii = 0; ii < 8; ii++)
palSetLineMode(lcdpins.D[ii], PAL_MODE_INPUT); //Set pads to input
palSetLine(lcdpins.RW);
KS0108_delay(1);
palClearLine(lcdpins.E);
KS0108_delay(1);
palSetLine(lcdpins.E);
KS0108_delay(1);
// palClearLine(lcdpins.RW);
// KS0108_delay(1);
// palSetLine(lcdpins.RW);
// KS0108_delay(1);
for(ii = 0; ii < 8; ii++){
if (palReadLine(lcdpins.D[ii]) == PAL_HIGH){ //Read output
data |= (1<<ii);
}
}
// palClearLine(lcdpins.E);
palClearLine(lcdpins.RW); //Write again
for(ii = 0; ii < 8; ii++) {
palSetLineMode(lcdpins.D[ii], PAL_MODE_OUTPUT_PUSHPULL); //Set pads to output
}
return data;
}
#endif
*/
#if KS0108_NEED_READ //Hardware Read ########### needs more testing but my display is broken
static GFXINLINE uint8_t read_KS0108(void) {
uint8_t ii, data=0;
for(ii = 0; ii < 8; ii++)
palSetLineMode(lcdpins.D[ii], PAL_MODE_INPUT); //Set pads to input
palSetLine(lcdpins.RW);
KS0108_delay(1);
palClearLine(lcdpins.DC);
KS0108_delay(1);
while (palReadLine(lcdpins.BUSY)); //Wait for busy flag
palSetLine(lcdpins.DC);
/*
KS0108_delay(2);
KS0108_latch();
KS0108_delay(2);
//KS0108_latch();
//KS0108_delay(1);
*/
palClearLine(lcdpins.RW);
KS0108_delay(2);
palSetLine(lcdpins.RW);
KS0108_delay(1);
palClearLine(lcdpins.DC);
KS0108_delay(1);
while (palReadLine(lcdpins.BUSY)); //Wait for busy flag
//KS0108_delay(7);
palSetLine(lcdpins.DC);
//KS0108_delay(1);
//KS0108_latch();
//KS0108_delay(3);
KS0108_delay(1);
for(ii = 0; ii < 8; ii++){
if (palReadLine(lcdpins.D[ii]) == PAL_HIGH) //Read output
data |= (1<<ii);
}
// palClearLine(lcdpins.E);
palSetLine(lcdpins.DC);
palClearLine(lcdpins.RW); //Write again
for(ii = 0; ii < 8; ii++) {
palSetLineMode(lcdpins.D[ii], PAL_MODE_OUTPUT_PUSHPULL); //Set pads to output
}
return data;
}
#endif
static GFXINLINE void write_data(GDisplay* g, uint16_t data){
(void)g;
uint8_t bit, displayData;
#if !KS0108_NEED_READ
uint8_t *p;
#endif
palSetLine(lcdpins.DC);
KS0108_select((uint8_t)(data>>8));
#if KS0108_NEED_READ
displayData=read_KS0108();
#else
p = RAM(g) + (GDISP_SCREEN_WIDTH*(g->p.y >> 3)) + g->p.x;
displayData = *p;
#endif
bit = 1 << (g->p.y & 7); //Get Page bit
if ((uint8_t)data){ //set bit
KS0108_write(displayData | bit);
#if !KS0108_NEED_READ
*p = (displayData | bit);
#endif
KS0108_latch();
} else {
KS0108_write(displayData & ~bit);
#if !KS0108_NEED_READ
*p = (displayData & ~bit);
#endif
KS0108_latch();
}
KS0108_delay(2); //one is too short!
KS0108_unselect(); //Important
}
static GFXINLINE void write_cmd(GDisplay* g, uint16_t cmd){
(void)g;
palClearLine(lcdpins.DC);
KS0108_select((uint8_t)(cmd>>8));
KS0108_write((uint8_t)cmd);
KS0108_latch();
KS0108_unselect(); //Important
}
static GFXINLINE void setreadmode(GDisplay *g) {
(void) g;
}
static GFXINLINE void setwritemode(GDisplay *g) {
(void) g;
}
static GFXINLINE uint16_t read_data(GDisplay *g) {
(void) g;
return 0;
}
#endif /* _GDISP_LLD_BOARD_H */
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