245 lines
7.5 KiB
C
245 lines
7.5 KiB
C
/*
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ChibiOS/RT - Copyright (C) 2012
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Joel Bodenmann aka Tectu <joel@unormal.org>
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This file is part of ChibiOS/GFX.
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ChibiOS/GFX is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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ChibiOS/GFX is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef S6D1121_H
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#define S6D1121_H
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// I/O assignments
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#define LCD_BL_GPIO GPIOB
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#define LCD_BL_PIN 8
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#define LCD_CS_GPIO GPIOD
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#define LCD_CS_PIN 7
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#define LCD_RS_GPIO GPIOD
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#define LCD_RS_PIN 11
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#define LCD_RST_GPIO GPIOD
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#define LCD_RST_PIN 10
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#define LCD_RD_GPIO GPIOD
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#define LCD_RD_PIN 9
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#define LCD_WR_GPIO GPIOD
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#define LCD_WR_PIN 8
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#define LCD_D0_GPIO GPIOD
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#define LCD_D4_GPIO GPIOE
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/* all interfaces use RST via GPIO */
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/* TODO: option to disable RST; assumes RST is tied high */
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#define LCD_RST_LOW palClearPad(LCD_RST_GPIO, LCD_RST_PIN)
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#define LCD_RST_HIGH palSetPad(LCD_RST_GPIO, LCD_RST_PIN)
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#define s6d1121_delay(n) halPolledDelay(MS2RTT(n));
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#if defined(LCD_USE_GPIO)
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#define LCD_CS_LOW palClearPad(LCD_CS_GPIO, LCD_CS_PIN)
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#define LCD_CS_HIGH palSetPad(LCD_CS_GPIO, LCD_CS_PIN)
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#define LCD_RS_LOW palClearPad(LCD_RS_GPIO, LCD_RS_PIN)
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#define LCD_RS_HIGH palSetPad(LCD_RS_GPIO, LCD_RS_PIN)
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#define LCD_RD_LOW palClearPad(LCD_RD_GPIO, LCD_RD_PIN)
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#define LCD_RD_HIGH palSetPad(LCD_RD_GPIO, LCD_RD_PIN)
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#define LCD_WR_LOW palClearPad(LCD_WR_GPIO, LCD_WR_PIN)
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#define LCD_WR_HIGH palSetPad(LCD_WR_GPIO, LCD_WR_PIN)
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#define LCD_BL_LOW palClearPad(LCD_BL_GPIO, LCD_BL_PIN)
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#define LCD_BL_HIGH palSetPad(LCD_BL_GPIO, LCD_BL_PIN)
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static inline void lld_lcddelay(void) { asm volatile ("nop"); asm volatile ("nop"); }
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static inline void lld_lcdwrite(uint16_t db) {
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LCD_D4_GPIO->BSRR.W=((~db&0xFFF0)<<16)|(db&0xFFF0);
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LCD_D0_GPIO->BSRR.W=((~db&0x000F)<<16)|(db&0x000F);
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LCD_WR_LOW;
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lld_lcddelay();
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LCD_WR_HIGH;
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}
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static __inline uint16_t lld_lcdReadData(void) {
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uint16_t value=0;
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LCD_RS_HIGH; LCD_WR_HIGH; LCD_RD_LOW;
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#ifndef STM32F4XX
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// change pin mode to digital input
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LCD_DATA_PORT->CRH = 0x47444444;
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LCD_DATA_PORT->CRL = 0x47444444;
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#endif
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#ifndef STM32F4XX
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// change pin mode back to digital output
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LCD_DATA_PORT->CRH = 0x33333333;
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LCD_DATA_PORT->CRL = 0x33333333;
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#endif
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LCD_RD_HIGH;
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return value;
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}
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static __inline uint16_t lld_lcdReadReg(uint16_t lcdReg) {
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uint16_t lcdRAM;
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LCD_CS_LOW; LCD_RS_LOW;
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lld_lcdwrite(lcdReg);
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LCD_RS_HIGH;
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lcdRAM = lld_lcdReadData();
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LCD_CS_HIGH;
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return lcdRAM;
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}
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static void lld_lcdWriteIndex(uint16_t lcdReg) {
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LCD_RS_LOW;
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lld_lcdwrite(lcdReg);
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LCD_RS_HIGH;
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}
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static void lld_lcdWriteData(uint16_t lcdData) {
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lld_lcdwrite(lcdData);
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}
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static void lld_lcdWriteReg(uint16_t lcdReg, uint16_t lcdRegValue) {
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LCD_CS_LOW;
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lld_lcdWriteIndex(lcdReg);
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lld_lcdWriteData(lcdRegValue);
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LCD_CS_HIGH;
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}
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static __inline void lld_lcdWriteStreamStart(void) {
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LCD_CS_LOW;
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lld_lcdWriteIndex(0x0022);
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}
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static __inline void lld_lcdWriteStreamStop(void) {
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LCD_CS_HIGH;
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}
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static __inline void lld_lcdWriteStream(uint16_t *buffer, uint16_t size) {
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uint16_t i;
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for(i = 0; i < size; i++) { lld_lcdwrite(buffer[i]); }
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}
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static __inline void lld_lcdReadStreamStart(void) { /* TODO */ }
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static __inline void lld_lcdReadStreamStop(void) { /* TODO */ }
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static __inline void lld_lcdReadStream(uint16_t *UNUSED(buffer), size_t UNUSED(size)) { /* TODO */ }
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#elif defined(LCD_USE_FSMC)
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#define LCD_REG (*((volatile uint16_t *) 0x60000000)) /* RS = 0 */
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#define LCD_RAM (*((volatile uint16_t *) 0x60020000)) /* RS = 1 */
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static __inline void lld_lcdWriteIndex(uint16_t index) { LCD_REG = index; }
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static __inline void lld_lcdWriteData(uint16_t data) { LCD_RAM = data; }
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static __inline void lld_lcdWriteReg(uint16_t lcdReg,uint16_t lcdRegValue) {
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LCD_REG = lcdReg;
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LCD_RAM = lcdRegValue;
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}
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static __inline uint16_t lld_lcdReadData(void) { return (LCD_RAM); }
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static __inline uint16_t lld_lcdReadReg(uint16_t lcdReg) {
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LCD_REG = lcdReg;
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return LCD_RAM;
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}
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static __inline void lld_lcdWriteStreamStart(void) { LCD_REG = 0x0022; }
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static __inline void lld_lcdWriteStreamStop(void) {}
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static __inline void lld_lcdWriteStream(uint16_t *buffer, uint16_t size) {
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uint16_t i;
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for(i = 0; i < size; i++) LCD_RAM = buffer[i];
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}
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static __inline void lld_lcdReadStreamStart(void) { LCD_REG = 0x0022; }
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static __inline void lld_lcdReadStreamStop(void) {}
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static __inline void lld_lcdReadStream(uint16_t *buffer, size_t size) {
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uint16_t i;
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volatile uint16_t dummy;
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/* throw away first value read */
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dummy = LCD_RAM;
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for(i = 0; i < size; i++) buffer[i] = LCD_RAM;
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}
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#elif defined(LCD_USE_SPI)
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#error "gdispS6d1121: LCD_USE_SPI not implemented yet"
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#else
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#error "gdispS6d1121: No known LCD_USE_XXX has been defined"
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#endif
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static void lld_lcdSetCursor(coord_t x, coord_t y) {
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/* R20h - 8 bit
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* R21h - 9 bit
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*/
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switch(GDISP.Orientation) {
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case portraitInv:
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lld_lcdWriteReg(0x0020, (SCREEN_WIDTH-1-x) & 0x00FF);
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lld_lcdWriteReg(0x0021, (SCREEN_HEIGHT-1-y) & 0x01FF);
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break;
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case portrait:
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lld_lcdWriteReg(0x0020, x & 0x00FF);
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lld_lcdWriteReg(0x0021, y & 0x01FF);
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break;
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case landscape:
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lld_lcdWriteReg(0x0020, y & 0x00FF);
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lld_lcdWriteReg(0x0021, x & 0x01FF);
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break;
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case landscapeInv:
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lld_lcdWriteReg(0x0020, (SCREEN_WIDTH - y - 1) & 0x00FF);
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lld_lcdWriteReg(0x0021, (SCREEN_HEIGHT - x - 1) & 0x01FF);
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break;
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}
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}
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static void lld_lcdSetViewPort(uint16_t x, uint16_t y, uint16_t cx, uint16_t cy) {
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/* HSA / HEA are 8 bit
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* VSA / VEA are 9 bit
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* use masks 0x00FF and 0x01FF to enforce this
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*/
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switch(GDISP.Orientation) {
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case portrait:
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lld_lcdWriteReg(0x46, (((x+cx-1) << 8) & 0xFF00 ) | (x & 0x00FF));
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lld_lcdWriteReg(0x48, y & 0x01FF);
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lld_lcdWriteReg(0x47, (y+cy-1) & 0x01FF);
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break;
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case landscape:
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lld_lcdWriteReg(0x46, (((x+cx-1) << 8) & 0xFF00) | ((y+cy) & 0x00FF));
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lld_lcdWriteReg(0x48, x & 0x01FF);
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lld_lcdWriteReg(0x47, (x+cx-1) & 0x01FF);
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break;
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case portraitInv:
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lld_lcdWriteReg(0x46, (((SCREEN_WIDTH-x-1) & 0x00FF) << 8) | ((SCREEN_WIDTH - (x+cx)) & 0x00FF));
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lld_lcdWriteReg(0x48, (SCREEN_HEIGHT-(y+cy)) & 0x01FF);
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lld_lcdWriteReg(0x47, (SCREEN_HEIGHT-y-1) & 0x01FF);
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break;
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case landscapeInv:
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lld_lcdWriteReg(0x46, (((SCREEN_WIDTH - y - 1) & 0x00FF) << 8) | ((SCREEN_WIDTH - (y+cy)) & 0x00FF));
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lld_lcdWriteReg(0x48, (SCREEN_HEIGHT - (x+cx)) & 0x01FF);
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lld_lcdWriteReg(0x47, (SCREEN_HEIGHT - x - 1) & 0x01FF);
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break;
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}
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lld_lcdSetCursor(x, y);
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}
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static void lld_lcdResetViewPort(void) {
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switch(GDISP.Orientation) {
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case portrait:
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case portraitInv:
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lld_lcdSetViewPort(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT);
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break;
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case landscape:
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case landscapeInv:
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lld_lcdSetViewPort(0, 0, SCREEN_HEIGHT, SCREEN_WIDTH);
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break;
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}
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}
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#endif /* S6D1121_H */
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