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