diff options
Diffstat (limited to 'drivers/gdisp/S6D1121/s6d1121_lld.c.h')
| -rw-r--r-- | drivers/gdisp/S6D1121/s6d1121_lld.c.h | 244 |
1 files changed, 244 insertions, 0 deletions
diff --git a/drivers/gdisp/S6D1121/s6d1121_lld.c.h b/drivers/gdisp/S6D1121/s6d1121_lld.c.h new file mode 100644 index 00000000..c1539fe7 --- /dev/null +++ b/drivers/gdisp/S6D1121/s6d1121_lld.c.h @@ -0,0 +1,244 @@ +/*
+ ChibiOS/RT - Copyright (C) 2012
+ Joel Bodenmann aka Tectu <joel@unormal.org>
+
+ This file is part of ChibiOS-LCD-Driver.
+
+ ChibiOS-LCD-Driver is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ ChibiOS-LCD-Driver is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef S6D1121_H
+#define S6D1121_H
+
+// I/O assignments
+#define LCD_BL_GPIO GPIOB
+#define LCD_BL_PIN 8
+
+#define LCD_CS_GPIO GPIOD
+#define LCD_CS_PIN 7
+
+#define LCD_RS_GPIO GPIOD
+#define LCD_RS_PIN 11
+
+#define LCD_RST_GPIO GPIOD
+#define LCD_RST_PIN 10
+
+#define LCD_RD_GPIO GPIOD
+#define LCD_RD_PIN 9
+
+#define LCD_WR_GPIO GPIOD
+#define LCD_WR_PIN 8
+
+#define LCD_D0_GPIO GPIOD
+#define LCD_D4_GPIO GPIOE
+
+/* all interfaces use RST via GPIO */
+/* TODO: option to disable RST; assumes RST is tied high */
+#define LCD_RST_LOW palClearPad(LCD_RST_GPIO, LCD_RST_PIN)
+#define LCD_RST_HIGH palSetPad(LCD_RST_GPIO, LCD_RST_PIN)
+
+#define s6d1121_delay(n) halPolledDelay(MS2RTT(n));
+
+#if defined(LCD_USE_GPIO)
+
+ #define LCD_CS_LOW palClearPad(LCD_CS_GPIO, LCD_CS_PIN)
+ #define LCD_CS_HIGH palSetPad(LCD_CS_GPIO, LCD_CS_PIN)
+
+ #define LCD_RS_LOW palClearPad(LCD_RS_GPIO, LCD_RS_PIN)
+ #define LCD_RS_HIGH palSetPad(LCD_RS_GPIO, LCD_RS_PIN)
+
+ #define LCD_RD_LOW palClearPad(LCD_RD_GPIO, LCD_RD_PIN)
+ #define LCD_RD_HIGH palSetPad(LCD_RD_GPIO, LCD_RD_PIN)
+
+ #define LCD_WR_LOW palClearPad(LCD_WR_GPIO, LCD_WR_PIN)
+ #define LCD_WR_HIGH palSetPad(LCD_WR_GPIO, LCD_WR_PIN)
+
+ #define LCD_BL_LOW palClearPad(LCD_BL_GPIO, LCD_BL_PIN)
+ #define LCD_BL_HIGH palSetPad(LCD_BL_GPIO, LCD_BL_PIN)
+
+
+ static inline void lld_lcddelay(void) { asm volatile ("nop"); asm volatile ("nop"); }
+ static inline void lld_lcdwrite(uint16_t db) {
+ LCD_D4_GPIO->BSRR.W=((~db&0xFFF0)<<16)|(db&0xFFF0);
+ LCD_D0_GPIO->BSRR.W=((~db&0x000F)<<16)|(db&0x000F);
+ LCD_WR_LOW;
+ lld_lcddelay();
+ LCD_WR_HIGH;
+ }
+ static __inline uint16_t lld_lcdReadData(void) {
+ uint16_t value=0;
+
+ LCD_RS_HIGH; LCD_WR_HIGH; LCD_RD_LOW;
+ #ifndef STM32F4XX
+ // change pin mode to digital input
+ LCD_DATA_PORT->CRH = 0x47444444;
+ LCD_DATA_PORT->CRL = 0x47444444;
+ #endif
+ #ifndef STM32F4XX
+ // change pin mode back to digital output
+ LCD_DATA_PORT->CRH = 0x33333333;
+ LCD_DATA_PORT->CRL = 0x33333333;
+ #endif
+ LCD_RD_HIGH;
+ return value;
+ }
+ static __inline uint16_t lld_lcdReadReg(uint16_t lcdReg) {
+ uint16_t lcdRAM;
+
+ LCD_CS_LOW; LCD_RS_LOW;
+ lld_lcdwrite(lcdReg);
+ LCD_RS_HIGH;
+ lcdRAM = lld_lcdReadData();
+ LCD_CS_HIGH;
+ return lcdRAM;
+ }
+ static void lld_lcdWriteIndex(uint16_t lcdReg) {
+ LCD_RS_LOW;
+ lld_lcdwrite(lcdReg);
+ LCD_RS_HIGH;
+ }
+ static void lld_lcdWriteData(uint16_t lcdData) {
+ lld_lcdwrite(lcdData);
+ }
+ static void lld_lcdWriteReg(uint16_t lcdReg, uint16_t lcdRegValue) {
+ LCD_CS_LOW;
+ lld_lcdWriteIndex(lcdReg);
+ lld_lcdWriteData(lcdRegValue);
+ LCD_CS_HIGH;
+ }
+ static __inline void lld_lcdWriteStreamStart(void) {
+ LCD_CS_LOW;
+ lld_lcdWriteIndex(0x0022);
+ }
+ static __inline void lld_lcdWriteStreamStop(void) {
+ LCD_CS_HIGH;
+ }
+ static __inline void lld_lcdWriteStream(uint16_t *buffer, uint16_t size) {
+ uint16_t i;
+
+ for(i = 0; i < size; i++) { lld_lcdwrite(buffer[i]); }
+ }
+ static __inline void lld_lcdReadStreamStart(void) { /* TODO */ }
+ static __inline void lld_lcdReadStreamStop(void) { /* TODO */ }
+ static __inline void lld_lcdReadStream(uint16_t *UNUSED(buffer), size_t UNUSED(size)) { /* TODO */ }
+
+#elif defined(LCD_USE_FSMC)
+ #define LCD_REG (*((volatile uint16_t *) 0x60000000)) /* RS = 0 */
+ #define LCD_RAM (*((volatile uint16_t *) 0x60020000)) /* RS = 1 */
+
+ static __inline void lld_lcdWriteIndex(uint16_t index) { LCD_REG = index; }
+ static __inline void lld_lcdWriteData(uint16_t data) { LCD_RAM = data; }
+ static __inline void lld_lcdWriteReg(uint16_t lcdReg,uint16_t lcdRegValue) {
+ LCD_REG = lcdReg;
+ LCD_RAM = lcdRegValue;
+ }
+ static __inline uint16_t lld_lcdReadData(void) { return (LCD_RAM); }
+ static __inline uint16_t lld_lcdReadReg(uint16_t lcdReg) {
+ LCD_REG = lcdReg;
+ return LCD_RAM;
+ }
+ static __inline void lld_lcdWriteStreamStart(void) { LCD_REG = 0x0022; }
+ static __inline void lld_lcdWriteStreamStop(void) {}
+ static __inline void lld_lcdWriteStream(uint16_t *buffer, uint16_t size) {
+ uint16_t i;
+ for(i = 0; i < size; i++) LCD_RAM = buffer[i];
+ }
+ static __inline void lld_lcdReadStreamStart(void) { LCD_REG = 0x0022; }
+ static __inline void lld_lcdReadStreamStop(void) {}
+ static __inline void lld_lcdReadStream(uint16_t *buffer, size_t size) {
+ uint16_t i;
+ volatile uint16_t dummy;
+
+ /* throw away first value read */
+ dummy = LCD_RAM;
+ for(i = 0; i < size; i++) buffer[i] = LCD_RAM;
+ }
+
+#elif defined(LCD_USE_SPI)
+ #error "gdispS6d1121: LCD_USE_SPI not implemented yet"
+
+#else
+ #error "gdispS6d1121: No known LCD_USE_XXX has been defined"
+#endif
+
+static void lld_lcdSetCursor(coord_t x, coord_t y) {
+ /* R20h - 8 bit
+ * R21h - 9 bit
+ */
+ switch(GDISP.Orientation) {
+ case portraitInv:
+ lld_lcdWriteReg(0x0020, (SCREEN_WIDTH-1-x) & 0x00FF);
+ lld_lcdWriteReg(0x0021, (SCREEN_HEIGHT-1-y) & 0x01FF);
+ break;
+ case portrait:
+ lld_lcdWriteReg(0x0020, x & 0x00FF);
+ lld_lcdWriteReg(0x0021, y & 0x01FF);
+ break;
+ case landscape:
+ lld_lcdWriteReg(0x0020, y & 0x00FF);
+ lld_lcdWriteReg(0x0021, x & 0x01FF);
+ break;
+ case landscapeInv:
+ lld_lcdWriteReg(0x0020, (SCREEN_WIDTH - y - 1) & 0x00FF);
+ lld_lcdWriteReg(0x0021, (SCREEN_HEIGHT - x - 1) & 0x01FF);
+ break;
+ }
+}
+
+static void lld_lcdSetViewPort(uint16_t x, uint16_t y, uint16_t cx, uint16_t cy) {
+ /* HSA / HEA are 8 bit
+ * VSA / VEA are 9 bit
+ * use masks 0x00FF and 0x01FF to enforce this
+ */
+
+ switch(GDISP.Orientation) {
+ case portrait:
+ lld_lcdWriteReg(0x46, (((x+cx-1) << 8) & 0xFF00 ) | (x & 0x00FF));
+ lld_lcdWriteReg(0x48, y & 0x01FF);
+ lld_lcdWriteReg(0x47, (y+cy-1) & 0x01FF);
+ break;
+ case landscape:
+ lld_lcdWriteReg(0x46, (((x+cx-1) << 8) & 0xFF00) | ((y+cy) & 0x00FF));
+ lld_lcdWriteReg(0x48, x & 0x01FF);
+ lld_lcdWriteReg(0x47, (x+cx-1) & 0x01FF);
+ break;
+ case portraitInv:
+ lld_lcdWriteReg(0x46, (((SCREEN_WIDTH-x-1) & 0x00FF) << 8) | ((SCREEN_WIDTH - (x+cx)) & 0x00FF));
+ lld_lcdWriteReg(0x48, (SCREEN_HEIGHT-(y+cy)) & 0x01FF);
+ lld_lcdWriteReg(0x47, (SCREEN_HEIGHT-y-1) & 0x01FF);
+ break;
+ case landscapeInv:
+ lld_lcdWriteReg(0x46, (((SCREEN_WIDTH - y - 1) & 0x00FF) << 8) | ((SCREEN_WIDTH - (y+cy)) & 0x00FF));
+ lld_lcdWriteReg(0x48, (SCREEN_HEIGHT - (x+cx)) & 0x01FF);
+ lld_lcdWriteReg(0x47, (SCREEN_HEIGHT - x - 1) & 0x01FF);
+ break;
+ }
+
+ lld_lcdSetCursor(x, y);
+}
+
+static void lld_lcdResetViewPort(void) {
+ switch(GDISP.Orientation) {
+ case portrait:
+ case portraitInv:
+ lld_lcdSetViewPort(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT);
+ break;
+ case landscape:
+ case landscapeInv:
+ lld_lcdSetViewPort(0, 0, SCREEN_HEIGHT, SCREEN_WIDTH);
+ break;
+ }
+}
+
+#endif /* S6D1121_H */
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