BeRTOS
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00001 00041 /* ---------------------------------------------------------------------------- 00042 * ATMEL Microcontroller Software Support 00043 * ---------------------------------------------------------------------------- 00044 * Copyright (c) 2010, Atmel Corporation 00045 * 00046 * All rights reserved. 00047 * 00048 * Redistribution and use in source and binary forms, with or without 00049 * modification, are permitted provided that the following conditions are met: 00050 * 00051 * - Redistributions of source code must retain the above copyright notice, 00052 * this list of conditions and the disclaimer below. 00053 * 00054 * Atmel's name may not be used to endorse or promote products derived from 00055 * this software without specific prior written permission. 00056 * 00057 * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR 00058 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 00059 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE 00060 * DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT, 00061 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 00062 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, 00063 * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 00064 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 00065 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, 00066 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00067 * ---------------------------------------------------------------------------- 00068 */ 00069 00070 #include "lcd_hx8347.h" 00071 00072 #include "hw/hw_hx8347.h" 00073 #include <cfg/debug.h> 00074 #include <drv/timer.h> 00075 00076 // Himax HX8347 chip id 00077 #define HX8347_ID_HIMAX 0x47 00078 00079 00080 static uint16_t lcd_row[LCD_WIDTH]; 00081 00082 00083 struct lcd_hx8347_reg 00084 { 00085 uint8_t cmd; // Register index, if 0xFF wait for value ms 00086 uint8_t data; // Register value 00087 }; 00088 00089 static const struct lcd_hx8347_reg init_seq[] = 00090 { 00091 // Start internal OSC 00092 { 0x19, 0x49 }, // OSCADJ=10 0000, OSD_EN=1 //60Hz 00093 { 0x93, 0x0C }, // RADJ=1100 00094 00095 // Power on flow 00096 { 0x44, 0x4D }, // VCM=100 1101 00097 { 0x45, 0x11 }, // VDV=1 0001 00098 { 0x20, 0x40 }, // BT=0100 00099 { 0x1D, 0x07 }, // VC1=111 00100 { 0x1E, 0x00 }, // VC3=000 00101 { 0x1F, 0x04 }, // VRH=0100 00102 00103 { 0x1C, 0x04 }, // AP=100 00104 { 0x1B, 0x10 }, // GASENB=0, PON=1, DK=0, XDK=0, DDVDH_TRI=0, STB=0 00105 { 0xFF, 50 }, // 50 ms delay 00106 00107 { 0x43, 0x80 }, // Set VCOMG=1 00108 { 0xFF, 50 }, // 50 ms delay 00109 00110 #if 0 00111 // Gamma for CMO 2.8 00112 { 0x46, 0x95 }, 00113 { 0x47, 0x51 }, 00114 { 0x48, 0x00 }, 00115 { 0x49, 0x36 }, 00116 { 0x4A, 0x11 }, 00117 { 0x4B, 0x66 }, 00118 { 0x4C, 0x14 }, 00119 { 0x4D, 0x77 }, 00120 { 0x4E, 0x13 }, 00121 { 0x4F, 0x4C }, 00122 { 0x50, 0x46 }, 00123 { 0x51, 0x46 }, 00124 #endif 00125 00126 // 240x320 window setting 00127 { 0x02, 0x00 }, // Column address start2 00128 { 0x03, 0x00 }, // Column address start1 00129 { 0x04, 0x00 }, // Column address end2 00130 { 0x05, 0xEF }, // Column address end1 00131 { 0x06, 0x00 }, // Row address start2 00132 { 0x07, 0x00 }, // Row address start1 00133 { 0x08, 0x01 }, // Row address end2 00134 { 0x09, 0x3F }, // Row address end1 00135 00136 // Display Setting 00137 { 0x01, 0x06 }, // IDMON=0, INVON=1, NORON=1, PTLON=0 00138 // { 0x16, 0xC8 }, // MY=1, MX=1, MV=0, BGR=1 00139 { 0x16, 0x68 }, // MY=0, MX=1, MV=1, RGB XY exchange X mirror 00140 { 0x23, 0x95 }, // N_DC=1001 0101 00141 { 0x24, 0x95 }, // P_DC=1001 0101 00142 { 0x25, 0xFF }, // I_DC=1111 1111 00143 { 0x27, 0x06 }, // N_BP=0000 0110 00144 { 0x28, 0x06 }, // N_FP=0000 0110 00145 { 0x29, 0x06 }, // P_BP=0000 0110 00146 { 0x2A, 0x06 }, // P_FP=0000 0110 00147 { 0x2C, 0x06 }, // I_BP=0000 0110 00148 { 0x2D, 0x06 }, // I_FP=0000 0110 00149 { 0x3A, 0x01 }, // N_RTN=0000, N_NW=001 00150 { 0x3B, 0x01 }, // P_RTN=0000, P_NW=001 00151 { 0x3C, 0xF0 }, // I_RTN=1111, I_NW=000 00152 { 0x3D, 0x00 }, // DIV=00 00153 { 0x3E, 0x38 }, // SON=38h 00154 { 0x40, 0x0F }, // GDON=0Fh 00155 { 0x41, 0xF0 }, // GDOF=F0h 00156 }; 00157 00158 /* 00159 * Write to an LCD register. 00160 */ 00161 static void regWrite(uint8_t reg, uint16_t val) 00162 { 00163 hx8347_cmd(reg); 00164 hx8347_write(val); 00165 } 00166 00167 /* 00168 * Read data from a LCD register. 00169 */ 00170 static uint16_t regRead(uint8_t reg) 00171 { 00172 hx8347_cmd(reg); 00173 return hx8347_read(); 00174 } 00175 00176 /* 00177 * Write data in a buffer to the LCD controller. 00178 */ 00179 static void bufferWrite(const uint16_t *buf, uint16_t size) 00180 { 00181 uint16_t i; 00182 for (i = 0 ; i < size; ++i) 00183 hx8347_write(buf[i]); 00184 } 00185 00186 static void lcd_setCursor(uint16_t x, uint16_t y) 00187 { 00188 regWrite(0x02, x >> 8); 00189 regWrite(0x03, x & 0xff); 00190 regWrite(0x06, y >> 8); 00191 regWrite(0x07, y & 0xff); 00192 } 00193 00194 static void lcd_setWindow(uint16_t x, uint16_t y, uint16_t width, uint16_t height) 00195 { 00196 ASSERT(x + width <= LCD_WIDTH); 00197 ASSERT(y + height <= LCD_HEIGHT); 00198 ASSERT(width > 0); 00199 ASSERT(height > 0); 00200 00201 // Window right and bottom limits are inclusive 00202 width--; 00203 height--; 00204 00205 lcd_setCursor(x, y); 00206 00207 regWrite(0x04, (x + width) >> 8); 00208 regWrite(0x05, (x + width) & 0xff); 00209 regWrite(0x08, (y + height) >> 8); 00210 regWrite(0x09, (y + height) & 0xff); 00211 } 00212 00213 /* 00214 * Refresh a bitmap on screen 00215 */ 00216 void lcd_hx8347_blitBitmap(const Bitmap *bm) 00217 { 00218 uint8_t mask; 00219 int i, l, r; 00220 00221 lcd_setWindow(0, 0, bm->width, bm->height); 00222 hx8347_cmd(0x22); 00223 00224 for (l = 0; l < bm->height / 8; l++) 00225 { 00226 for (mask = 1; mask; mask <<= 1) 00227 { 00228 for (i = 0; i < bm->width; i++) 00229 { 00230 if (bm->raster[l * bm->width + i] & mask) 00231 lcd_row[i] = 0x0000; 00232 else 00233 lcd_row[i] = 0xFFFF; 00234 } 00235 bufferWrite(lcd_row, bm->width); 00236 } 00237 } 00238 00239 for (r = 0, mask = 1; r < bm->height % 8; r++, mask <<= 1) 00240 { 00241 for (i = 0; i < bm->width; i++) 00242 { 00243 if (bm->raster[l * bm->width + i] & mask) 00244 lcd_row[i] = 0x0000; 00245 else 00246 lcd_row[i] = 0xFFFF; 00247 } 00248 bufferWrite(lcd_row, bm->width); 00249 } 00250 } 00251 00252 /* 00253 * Blit a 24 bit color raw raster directly on screen 00254 */ 00255 void lcd_hx8347_blitBitmap24(int x, int y, int width, int height, const char *bmp) 00256 { 00257 int l, r; 00258 00259 lcd_setWindow(x, y, width, height); 00260 hx8347_cmd(0x22); 00261 00262 for (l = 0; l < height; l++) 00263 { 00264 for (r = 0; r < width; r++) 00265 { 00266 lcd_row[r] = 00267 (((uint16_t)bmp[0] << 8) & 0xF800) | 00268 (((uint16_t)bmp[1] << 3) & 0x07E0) | 00269 (((uint16_t)bmp[2] >> 3) & 0x001F); 00270 bmp += 3; 00271 } 00272 bufferWrite(lcd_row, width); 00273 } 00274 } 00275 00279 void lcd_hx8347_off(void) 00280 { 00281 regWrite(0x90, 0); // SAP=0000 0000 00282 regWrite(0x26, 0); // GON=0, DTE=0, D=00 00283 } 00284 00288 void lcd_hx8347_on(void) 00289 { 00290 regWrite(0x90, 0x7F); // SAP=0111 1111 00291 regWrite(0x26, 0x04); // GON=0, DTE=0, D=01 00292 timer_delay(100); 00293 regWrite(0x26, 0x24); // GON=1, DTE=0, D=01 00294 regWrite(0x26, 0x2C); // GON=1, DTE=0, D=11 00295 timer_delay(100); 00296 regWrite(0x26, 0x3C); // GON=1, DTE=1, D=11 00297 } 00298 00302 void lcd_hx8347_init(void) 00303 { 00304 unsigned i; 00305 uint16_t chip_id; 00306 00307 hx8347_busInit(); 00308 lcd_hx8347_off(); 00309 00310 // Check chip id 00311 if ((chip_id = regRead(0x67)) != HX8347_ID_HIMAX) 00312 { 00313 kprintf("HX8347 chip id read error or wrong id (0x%x), skipping initialization.\n", chip_id); 00314 return; 00315 } 00316 00317 for (i = 0; i < countof(init_seq); i++) 00318 { 00319 if (init_seq[i].cmd != 0xFF) 00320 regWrite(init_seq[i].cmd, init_seq[i].data); 00321 else 00322 timer_delay(init_seq[i].data); 00323 } 00324 00325 lcd_hx8347_on(); 00326 }