test / EALib

A library with drivers for different peripherals on the LPC4088 QuickStart Board or related add-on boards.

Dependencies:   FATFileSystem

Dependents:   bare

Fork of EALib by EmbeddedArtists AB

EaLcdBoard.cpp@2:1c6134c80dc5, 2013-09-27 (annotated)

Committer:
embeddedartists
Date:
Fri Sep 27 14:07:07 2013 +0000
Revision:
2:1c6134c80dc5
Parent:
0:0fdadbc3d852
Child:
4:b32cf4ef45c5
Added documentation of QSPIFileSystem

Who changed what in which revision?

UserRevisionLine numberNew contents of line
embeddedartists 0:0fdadbc3d852 1
embeddedartists 0:0fdadbc3d852 2 #include "mbed.h"
embeddedartists 0:0fdadbc3d852 3 #include "EaLcdBoard.h"
embeddedartists 0:0fdadbc3d852 4
embeddedartists 0:0fdadbc3d852 5 #define LCDB_MAGIC 0xEA01CDAE
embeddedartists 0:0fdadbc3d852 6
embeddedartists 0:0fdadbc3d852 7
embeddedartists 0:0fdadbc3d852 8 #define LCDB_PCA9532_I2C_ADDR (0x64 << 1)
embeddedartists 0:0fdadbc3d852 9
embeddedartists 0:0fdadbc3d852 10 /* PCA9532 registers*/
embeddedartists 0:0fdadbc3d852 11 #define LCDB_PCA9532_INPUT0 0x00
embeddedartists 0:0fdadbc3d852 12 #define LCDB_PCA9532_INPUT1 0x01
embeddedartists 0:0fdadbc3d852 13 #define LCDB_PCA9532_PSC0 0x02
embeddedartists 0:0fdadbc3d852 14 #define LCDB_PCA9532_PWM0 0x03
embeddedartists 0:0fdadbc3d852 15 #define LCDB_PCA9532_PSC1 0x04
embeddedartists 0:0fdadbc3d852 16 #define LCDB_PCA9532_PWM1 0x05
embeddedartists 0:0fdadbc3d852 17 #define LCDB_PCA9532_LS0 0x06
embeddedartists 0:0fdadbc3d852 18 #define LCDB_PCA9532_LS1 0x07
embeddedartists 0:0fdadbc3d852 19 #define LCDB_PCA9532_LS2 0x08
embeddedartists 0:0fdadbc3d852 20 #define LCDB_PCA9532_LS3 0x09
embeddedartists 0:0fdadbc3d852 21 #define LCDB_PCA9532_AUTO_INC 0x10
embeddedartists 0:0fdadbc3d852 22
embeddedartists 0:0fdadbc3d852 23 #define LCDB_LS_MODE_ON 0x01
embeddedartists 0:0fdadbc3d852 24 #define LCDB_LS_MODE_BLINK0 0x02
embeddedartists 0:0fdadbc3d852 25 #define LCDB_LS_MODE_BLINK1 0x03
embeddedartists 0:0fdadbc3d852 26
embeddedartists 0:0fdadbc3d852 27 #define LCDB_CTRL_3V3 0x0001
embeddedartists 0:0fdadbc3d852 28 #define LCDB_CTRL_5V 0x0002
embeddedartists 0:0fdadbc3d852 29 #define LCDB_CTRL_DISP_EN 0x0010
embeddedartists 0:0fdadbc3d852 30 #define LCDB_CTRL_BL_EN 0x0080
embeddedartists 0:0fdadbc3d852 31 #define LCDB_CTRL_BL_C 0x0100
embeddedartists 0:0fdadbc3d852 32 #define LCDB_EEPROM_WP 0x8000
embeddedartists 0:0fdadbc3d852 33
embeddedartists 0:0fdadbc3d852 34 #define LCDB_EEPROM_I2C_ADDR (0x56 << 1)
embeddedartists 0:0fdadbc3d852 35 #define LCDB_EEPROM_PAGE_SIZE 32
embeddedartists 0:0fdadbc3d852 36 #define LCDB_EEPROM_TOTAL_SIZE 8192
embeddedartists 0:0fdadbc3d852 37
embeddedartists 0:0fdadbc3d852 38 /*
embeddedartists 0:0fdadbc3d852 39 * Set which sequence string version that is supported
embeddedartists 0:0fdadbc3d852 40 */
embeddedartists 0:0fdadbc3d852 41 #define LCDB_SEQ_VER 1
embeddedartists 0:0fdadbc3d852 42
embeddedartists 0:0fdadbc3d852 43 #ifndef MIN
embeddedartists 0:0fdadbc3d852 44 #define MIN(x, y) (((x)<(y))?(x):(y))
embeddedartists 0:0fdadbc3d852 45 #endif
embeddedartists 0:0fdadbc3d852 46
embeddedartists 0:0fdadbc3d852 47 #define EA_LCD_TMP_BUFFER_SZ 256
embeddedartists 0:0fdadbc3d852 48 static char* eaLcdTmpBuffer[EA_LCD_TMP_BUFFER_SZ];
embeddedartists 0:0fdadbc3d852 49
embeddedartists 0:0fdadbc3d852 50
embeddedartists 0:0fdadbc3d852 51 /* Structure containing the parameters for the LCD panel as stored on LCD Board */
embeddedartists 0:0fdadbc3d852 52
embeddedartists 0:0fdadbc3d852 53 /* LCD display types */
embeddedartists 0:0fdadbc3d852 54 typedef enum {
embeddedartists 0:0fdadbc3d852 55 TFT = 0, /* standard TFT */
embeddedartists 0:0fdadbc3d852 56 ADTFT, /* advanced TFT */
embeddedartists 0:0fdadbc3d852 57 HRTFT, /* highly reflective TFT */
embeddedartists 0:0fdadbc3d852 58 MONO_4BIT, /* 4-bit mono */
embeddedartists 0:0fdadbc3d852 59 MONO_8BIT, /* 8-bit mono */
embeddedartists 0:0fdadbc3d852 60 CSTN /* color STN */
embeddedartists 0:0fdadbc3d852 61 } nxp_lcd_panel_t;
embeddedartists 0:0fdadbc3d852 62
embeddedartists 0:0fdadbc3d852 63 typedef struct {
embeddedartists 0:0fdadbc3d852 64 uint8_t h_back_porch; /* Horizontal back porch in clocks */
embeddedartists 0:0fdadbc3d852 65 uint8_t h_front_porch; /* Horizontal front porch in clocks */
embeddedartists 0:0fdadbc3d852 66 uint8_t h_sync_pulse_width; /* HSYNC pulse width in clocks */
embeddedartists 0:0fdadbc3d852 67 uint16_t pixels_per_line; /* Pixels per line (horizontal resolution) */
embeddedartists 0:0fdadbc3d852 68 uint8_t v_back_porch; /* Vertical back porch in clocks */
embeddedartists 0:0fdadbc3d852 69 uint8_t v_front_porch; /* Vertical front porch in clocks */
embeddedartists 0:0fdadbc3d852 70 uint8_t v_sync_pulse_width; /* VSYNC pulse width in clocks */
embeddedartists 0:0fdadbc3d852 71 uint16_t lines_per_panel; /* Lines per panel (vertical resolution) */
embeddedartists 0:0fdadbc3d852 72 uint8_t invert_output_enable; /* Invert output enable, 1 = invert*/
embeddedartists 0:0fdadbc3d852 73 uint8_t invert_panel_clock; /* Invert panel clock, 1 = invert*/
embeddedartists 0:0fdadbc3d852 74 uint8_t invert_hsync; /* Invert HSYNC, 1 = invert */
embeddedartists 0:0fdadbc3d852 75 uint8_t invert_vsync; /* Invert VSYNC, 1 = invert */
embeddedartists 0:0fdadbc3d852 76 uint8_t ac_bias_frequency; /* AC bias frequency in clocks */
embeddedartists 0:0fdadbc3d852 77 uint8_t bits_per_pixel; /* Maximum bits per pixel the display supports */
embeddedartists 0:0fdadbc3d852 78 uint32_t optimal_clock; /* Optimal clock rate (Hz) */
embeddedartists 0:0fdadbc3d852 79 nxp_lcd_panel_t lcd_panel_type; /* LCD panel type */
embeddedartists 0:0fdadbc3d852 80 uint8_t dual_panel; /* Dual panel, 1 = dual panel display */
embeddedartists 0:0fdadbc3d852 81 } nxp_lcd_param_t;
embeddedartists 0:0fdadbc3d852 82
embeddedartists 0:0fdadbc3d852 83 static uint32_t str_to_uint(char* str, uint32_t len);
embeddedartists 0:0fdadbc3d852 84
embeddedartists 0:0fdadbc3d852 85 EaLcdBoard::EaLcdBoard(PinName sda, PinName scl) : _i2c(sda, scl) {
embeddedartists 0:0fdadbc3d852 86 _blink0Shadow = 0;
embeddedartists 0:0fdadbc3d852 87 _blink1Shadow = 0;
embeddedartists 0:0fdadbc3d852 88 _ledStateShadow = 0;
embeddedartists 0:0fdadbc3d852 89 _lcdPwrOn = false;
embeddedartists 0:0fdadbc3d852 90 }
embeddedartists 0:0fdadbc3d852 91
embeddedartists 0:0fdadbc3d852 92 EaLcdBoard::Result EaLcdBoard::open(LcdController::Config* cfg, char* initSeq) {
embeddedartists 0:0fdadbc3d852 93
embeddedartists 0:0fdadbc3d852 94 EaLcdBoard::Result result = Ok;
embeddedartists 0:0fdadbc3d852 95
embeddedartists 0:0fdadbc3d852 96 // load LCD configuration from storage
embeddedartists 0:0fdadbc3d852 97 if (cfg == NULL) {
embeddedartists 0:0fdadbc3d852 98 result = getLcdConfig(&_cfg);
embeddedartists 0:0fdadbc3d852 99 cfg = &_cfg;
embeddedartists 0:0fdadbc3d852 100 }
embeddedartists 0:0fdadbc3d852 101
embeddedartists 0:0fdadbc3d852 102 // load init sequence from storage
embeddedartists 0:0fdadbc3d852 103 if (result == Ok && initSeq == NULL) {
embeddedartists 0:0fdadbc3d852 104 result = getInitSeq((char*)eaLcdTmpBuffer, EA_LCD_TMP_BUFFER_SZ);
embeddedartists 0:0fdadbc3d852 105 initSeq = (char*)eaLcdTmpBuffer;
embeddedartists 0:0fdadbc3d852 106 }
embeddedartists 0:0fdadbc3d852 107
embeddedartists 0:0fdadbc3d852 108 if (result != Ok) {
embeddedartists 0:0fdadbc3d852 109 return result;
embeddedartists 0:0fdadbc3d852 110 }
embeddedartists 0:0fdadbc3d852 111
embeddedartists 0:0fdadbc3d852 112 return parseInitString(initSeq, cfg);
embeddedartists 0:0fdadbc3d852 113 }
embeddedartists 0:0fdadbc3d852 114
embeddedartists 0:0fdadbc3d852 115 EaLcdBoard::Result EaLcdBoard::close() {
embeddedartists 0:0fdadbc3d852 116 int r = 0;
embeddedartists 0:0fdadbc3d852 117
embeddedartists 0:0fdadbc3d852 118 do {
embeddedartists 0:0fdadbc3d852 119 r = lcdCtrl.setPower(false);
embeddedartists 0:0fdadbc3d852 120 if (r != 0) break;
embeddedartists 0:0fdadbc3d852 121
embeddedartists 0:0fdadbc3d852 122 _lcdPwrOn = false;
embeddedartists 0:0fdadbc3d852 123
embeddedartists 0:0fdadbc3d852 124 r = lcdCtrl.close();
embeddedartists 0:0fdadbc3d852 125 } while(0);
embeddedartists 0:0fdadbc3d852 126
embeddedartists 0:0fdadbc3d852 127 if (r != 0) {
embeddedartists 0:0fdadbc3d852 128 return LcdAccessError;
embeddedartists 0:0fdadbc3d852 129 }
embeddedartists 0:0fdadbc3d852 130
embeddedartists 0:0fdadbc3d852 131 return Ok;
embeddedartists 0:0fdadbc3d852 132 }
embeddedartists 0:0fdadbc3d852 133
embeddedartists 0:0fdadbc3d852 134 EaLcdBoard::Result EaLcdBoard::setFrameBuffer(uint32_t address) {
embeddedartists 0:0fdadbc3d852 135 int r = 0;
embeddedartists 0:0fdadbc3d852 136
embeddedartists 0:0fdadbc3d852 137 do {
embeddedartists 0:0fdadbc3d852 138
embeddedartists 0:0fdadbc3d852 139 // begin by powering on the display
embeddedartists 0:0fdadbc3d852 140 if (!_lcdPwrOn) {
embeddedartists 0:0fdadbc3d852 141 r = lcdCtrl.setPower(true);
embeddedartists 0:0fdadbc3d852 142 if (r != 0) break;
embeddedartists 0:0fdadbc3d852 143
embeddedartists 0:0fdadbc3d852 144 _lcdPwrOn = true;
embeddedartists 0:0fdadbc3d852 145 }
embeddedartists 0:0fdadbc3d852 146
embeddedartists 0:0fdadbc3d852 147 // activate specified frame buffer
embeddedartists 0:0fdadbc3d852 148 r = lcdCtrl.setFrameBuffer(address);
embeddedartists 0:0fdadbc3d852 149 if (r != 0) break;
embeddedartists 0:0fdadbc3d852 150
embeddedartists 0:0fdadbc3d852 151 } while(0);
embeddedartists 0:0fdadbc3d852 152
embeddedartists 0:0fdadbc3d852 153 if (r != 0) {
embeddedartists 0:0fdadbc3d852 154 return LcdAccessError;
embeddedartists 0:0fdadbc3d852 155 }
embeddedartists 0:0fdadbc3d852 156
embeddedartists 0:0fdadbc3d852 157
embeddedartists 0:0fdadbc3d852 158 return Ok;
embeddedartists 0:0fdadbc3d852 159 }
embeddedartists 0:0fdadbc3d852 160
embeddedartists 0:0fdadbc3d852 161 EaLcdBoard::Result EaLcdBoard::getLcdConfig(LcdController::Config* cfg) {
embeddedartists 0:0fdadbc3d852 162 store_t h;
embeddedartists 0:0fdadbc3d852 163
embeddedartists 0:0fdadbc3d852 164 nxp_lcd_param_t lcdParam;
embeddedartists 0:0fdadbc3d852 165
embeddedartists 0:0fdadbc3d852 166 getStore(&h);
embeddedartists 0:0fdadbc3d852 167
embeddedartists 0:0fdadbc3d852 168 if (h.magic != LCDB_MAGIC) {
embeddedartists 0:0fdadbc3d852 169 return InvalidStorage;
embeddedartists 0:0fdadbc3d852 170 }
embeddedartists 0:0fdadbc3d852 171
embeddedartists 0:0fdadbc3d852 172 eepromRead((uint8_t*)&lcdParam, h.lcdParamOff,
embeddedartists 0:0fdadbc3d852 173 (h.initOff-h.lcdParamOff));
embeddedartists 0:0fdadbc3d852 174
embeddedartists 0:0fdadbc3d852 175 cfg->horizontalBackPorch = lcdParam.h_back_porch;
embeddedartists 0:0fdadbc3d852 176 cfg->horizontalFrontPorch = lcdParam.h_front_porch;
embeddedartists 0:0fdadbc3d852 177 cfg->hsync = lcdParam.h_sync_pulse_width;
embeddedartists 0:0fdadbc3d852 178 cfg->width = lcdParam.pixels_per_line;
embeddedartists 0:0fdadbc3d852 179 cfg->verticalBackPorch = lcdParam.v_back_porch;
embeddedartists 0:0fdadbc3d852 180 cfg->verticalFrontPorch = lcdParam.v_front_porch;
embeddedartists 0:0fdadbc3d852 181 cfg->vsync = lcdParam.v_sync_pulse_width;
embeddedartists 0:0fdadbc3d852 182 cfg->height = lcdParam.lines_per_panel;
embeddedartists 0:0fdadbc3d852 183 cfg->invertOutputEnable = (lcdParam.invert_output_enable == 1);
embeddedartists 0:0fdadbc3d852 184 cfg->invertPanelClock = (lcdParam.invert_panel_clock == 1);
embeddedartists 0:0fdadbc3d852 185 cfg->invertHsync = (lcdParam.invert_hsync == 1);
embeddedartists 0:0fdadbc3d852 186 cfg->invertVsync = (lcdParam.invert_vsync == 1);
embeddedartists 0:0fdadbc3d852 187 cfg->acBias = lcdParam.ac_bias_frequency;
embeddedartists 0:0fdadbc3d852 188 cfg->bpp = LcdController::Bpp_16_565;
embeddedartists 0:0fdadbc3d852 189 cfg->optimalClock = lcdParam.optimal_clock;
embeddedartists 0:0fdadbc3d852 190 cfg->panelType = (LcdController::LcdPanel)lcdParam.lcd_panel_type;
embeddedartists 0:0fdadbc3d852 191 cfg->dualPanel = (lcdParam.dual_panel == 1);
embeddedartists 0:0fdadbc3d852 192
embeddedartists 0:0fdadbc3d852 193 return Ok;
embeddedartists 0:0fdadbc3d852 194 }
embeddedartists 0:0fdadbc3d852 195
embeddedartists 0:0fdadbc3d852 196 EaLcdBoard::Result EaLcdBoard::getDisplayName(char* buf, int len) {
embeddedartists 0:0fdadbc3d852 197 store_t h;
embeddedartists 0:0fdadbc3d852 198
embeddedartists 0:0fdadbc3d852 199 getStore(&h);
embeddedartists 0:0fdadbc3d852 200
embeddedartists 0:0fdadbc3d852 201 if (h.magic != LCDB_MAGIC) {
embeddedartists 0:0fdadbc3d852 202 return InvalidStorage;
embeddedartists 0:0fdadbc3d852 203 }
embeddedartists 0:0fdadbc3d852 204
embeddedartists 0:0fdadbc3d852 205 if (len < NameBufferSize) {
embeddedartists 0:0fdadbc3d852 206 return BufferTooSmall;
embeddedartists 0:0fdadbc3d852 207 }
embeddedartists 0:0fdadbc3d852 208
embeddedartists 0:0fdadbc3d852 209 strncpy(buf, (char*)h.lcd_name, NameBufferSize);
embeddedartists 0:0fdadbc3d852 210
embeddedartists 0:0fdadbc3d852 211 return Ok;
embeddedartists 0:0fdadbc3d852 212 }
embeddedartists 0:0fdadbc3d852 213
embeddedartists 0:0fdadbc3d852 214 EaLcdBoard::Result EaLcdBoard::getDisplayMfg(char* buf, int len) {
embeddedartists 0:0fdadbc3d852 215 store_t h;
embeddedartists 0:0fdadbc3d852 216
embeddedartists 0:0fdadbc3d852 217 getStore(&h);
embeddedartists 0:0fdadbc3d852 218
embeddedartists 0:0fdadbc3d852 219 if (h.magic != LCDB_MAGIC) {
embeddedartists 0:0fdadbc3d852 220 return InvalidStorage;
embeddedartists 0:0fdadbc3d852 221 }
embeddedartists 0:0fdadbc3d852 222
embeddedartists 0:0fdadbc3d852 223 if (len < NameBufferSize) {
embeddedartists 0:0fdadbc3d852 224 return BufferTooSmall;
embeddedartists 0:0fdadbc3d852 225 }
embeddedartists 0:0fdadbc3d852 226
embeddedartists 0:0fdadbc3d852 227 strncpy(buf, (char*)h.lcd_mfg, NameBufferSize);
embeddedartists 0:0fdadbc3d852 228
embeddedartists 0:0fdadbc3d852 229 return Ok;
embeddedartists 0:0fdadbc3d852 230 }
embeddedartists 0:0fdadbc3d852 231
embeddedartists 0:0fdadbc3d852 232 EaLcdBoard::Result EaLcdBoard::getInitSeq(char* buf, int len) {
embeddedartists 0:0fdadbc3d852 233 store_t h;
embeddedartists 0:0fdadbc3d852 234
embeddedartists 0:0fdadbc3d852 235 getStore(&h);
embeddedartists 0:0fdadbc3d852 236
embeddedartists 0:0fdadbc3d852 237 if (h.magic != LCDB_MAGIC) {
embeddedartists 0:0fdadbc3d852 238 return InvalidStorage;
embeddedartists 0:0fdadbc3d852 239 }
embeddedartists 0:0fdadbc3d852 240
embeddedartists 0:0fdadbc3d852 241 if ((h.pdOff-h.initOff) > len) {
embeddedartists 0:0fdadbc3d852 242 return BufferTooSmall;
embeddedartists 0:0fdadbc3d852 243 }
embeddedartists 0:0fdadbc3d852 244
embeddedartists 0:0fdadbc3d852 245 eepromRead((uint8_t*)buf, h.initOff,
embeddedartists 0:0fdadbc3d852 246 (h.pdOff-h.initOff));
embeddedartists 0:0fdadbc3d852 247
embeddedartists 0:0fdadbc3d852 248 return Ok;
embeddedartists 0:0fdadbc3d852 249 }
embeddedartists 0:0fdadbc3d852 250
embeddedartists 0:0fdadbc3d852 251 EaLcdBoard::Result EaLcdBoard::getPowerDownSeq(char* buf, int len) {
embeddedartists 0:0fdadbc3d852 252 store_t h;
embeddedartists 0:0fdadbc3d852 253
embeddedartists 0:0fdadbc3d852 254 getStore(&h);
embeddedartists 0:0fdadbc3d852 255
embeddedartists 0:0fdadbc3d852 256 if (h.magic != LCDB_MAGIC) {
embeddedartists 0:0fdadbc3d852 257 return InvalidStorage;
embeddedartists 0:0fdadbc3d852 258 }
embeddedartists 0:0fdadbc3d852 259
embeddedartists 0:0fdadbc3d852 260 if ((h.tsOff-h.pdOff) > len) {
embeddedartists 0:0fdadbc3d852 261 return BufferTooSmall;
embeddedartists 0:0fdadbc3d852 262 }
embeddedartists 0:0fdadbc3d852 263
embeddedartists 0:0fdadbc3d852 264 eepromRead((uint8_t*)buf, h.pdOff,
embeddedartists 0:0fdadbc3d852 265 (h.tsOff-h.pdOff));
embeddedartists 0:0fdadbc3d852 266
embeddedartists 0:0fdadbc3d852 267 return Ok;
embeddedartists 0:0fdadbc3d852 268 }
embeddedartists 0:0fdadbc3d852 269
embeddedartists 0:0fdadbc3d852 270 EaLcdBoard::Result EaLcdBoard::getStore(store_t* store) {
embeddedartists 0:0fdadbc3d852 271 int num = 0;
embeddedartists 0:0fdadbc3d852 272
embeddedartists 0:0fdadbc3d852 273 if (store == NULL) return InvalidArgument;
embeddedartists 0:0fdadbc3d852 274
embeddedartists 0:0fdadbc3d852 275 num = eepromRead((uint8_t*)store, 0, sizeof(store_t));
embeddedartists 0:0fdadbc3d852 276 if (num < (int)sizeof(store_t)) {
embeddedartists 0:0fdadbc3d852 277 return InvalidStorage;
embeddedartists 0:0fdadbc3d852 278 }
embeddedartists 0:0fdadbc3d852 279
embeddedartists 0:0fdadbc3d852 280 return Ok;
embeddedartists 0:0fdadbc3d852 281 }
embeddedartists 0:0fdadbc3d852 282
embeddedartists 0:0fdadbc3d852 283 // ###########################
embeddedartists 0:0fdadbc3d852 284 // An EEPROM is used for persistent storage
embeddedartists 0:0fdadbc3d852 285 // ###########################
embeddedartists 0:0fdadbc3d852 286
embeddedartists 0:0fdadbc3d852 287 int EaLcdBoard::eepromRead(uint8_t* buf, uint16_t offset, uint16_t len) {
embeddedartists 0:0fdadbc3d852 288 int i = 0;
embeddedartists 0:0fdadbc3d852 289 char off[2];
embeddedartists 0:0fdadbc3d852 290
embeddedartists 0:0fdadbc3d852 291 if (len > LCDB_EEPROM_TOTAL_SIZE || offset+len > LCDB_EEPROM_TOTAL_SIZE) {
embeddedartists 0:0fdadbc3d852 292 return -1;
embeddedartists 0:0fdadbc3d852 293 }
embeddedartists 0:0fdadbc3d852 294
embeddedartists 0:0fdadbc3d852 295 off[0] = ((offset >> 8) & 0xff);
embeddedartists 0:0fdadbc3d852 296 off[1] = (offset & 0xff);
embeddedartists 0:0fdadbc3d852 297
embeddedartists 0:0fdadbc3d852 298 _i2c.write(LCDB_EEPROM_I2C_ADDR, (char*)off, 2);
embeddedartists 0:0fdadbc3d852 299 for ( i = 0; i < 0x2000; i++);
embeddedartists 0:0fdadbc3d852 300 _i2c.read(LCDB_EEPROM_I2C_ADDR, (char*)buf, len);
embeddedartists 0:0fdadbc3d852 301
embeddedartists 0:0fdadbc3d852 302 return len;
embeddedartists 0:0fdadbc3d852 303 }
embeddedartists 0:0fdadbc3d852 304
embeddedartists 0:0fdadbc3d852 305 int EaLcdBoard::eepromWrite(uint8_t* buf, uint16_t offset, uint16_t len) {
embeddedartists 0:0fdadbc3d852 306 int16_t written = 0;
embeddedartists 0:0fdadbc3d852 307 uint16_t wLen = 0;
embeddedartists 0:0fdadbc3d852 308 uint16_t off = offset;
embeddedartists 0:0fdadbc3d852 309 uint8_t tmp[LCDB_EEPROM_PAGE_SIZE+2];
embeddedartists 0:0fdadbc3d852 310
embeddedartists 0:0fdadbc3d852 311 if (len > LCDB_EEPROM_TOTAL_SIZE || offset+len > LCDB_EEPROM_TOTAL_SIZE) {
embeddedartists 0:0fdadbc3d852 312 return -1;
embeddedartists 0:0fdadbc3d852 313 }
embeddedartists 0:0fdadbc3d852 314
embeddedartists 0:0fdadbc3d852 315 wLen = LCDB_EEPROM_PAGE_SIZE - (off % LCDB_EEPROM_PAGE_SIZE);
embeddedartists 0:0fdadbc3d852 316 wLen = MIN(wLen, len);
embeddedartists 0:0fdadbc3d852 317
embeddedartists 0:0fdadbc3d852 318 while (len) {
embeddedartists 0:0fdadbc3d852 319 tmp[0] = ((off >> 8) & 0xff);
embeddedartists 0:0fdadbc3d852 320 tmp[1] = (off & 0xff);
embeddedartists 0:0fdadbc3d852 321 memcpy(&tmp[2], (void*)&buf[written], wLen);
embeddedartists 0:0fdadbc3d852 322 _i2c.write(LCDB_EEPROM_I2C_ADDR, (char*)tmp, wLen+2);
embeddedartists 0:0fdadbc3d852 323
embeddedartists 0:0fdadbc3d852 324 // delay to wait for a write cycle
embeddedartists 0:0fdadbc3d852 325 //eepromDelay();
embeddedartists 0:0fdadbc3d852 326 wait_ms(1);
embeddedartists 0:0fdadbc3d852 327
embeddedartists 0:0fdadbc3d852 328 len -= wLen;
embeddedartists 0:0fdadbc3d852 329 written += wLen;
embeddedartists 0:0fdadbc3d852 330 off += wLen;
embeddedartists 0:0fdadbc3d852 331
embeddedartists 0:0fdadbc3d852 332 wLen = MIN(LCDB_EEPROM_PAGE_SIZE, len);
embeddedartists 0:0fdadbc3d852 333 }
embeddedartists 0:0fdadbc3d852 334
embeddedartists 0:0fdadbc3d852 335 return written;
embeddedartists 0:0fdadbc3d852 336 }
embeddedartists 0:0fdadbc3d852 337
embeddedartists 0:0fdadbc3d852 338 // ###########################
embeddedartists 0:0fdadbc3d852 339 // string parsing (initialization and power down strings)
embeddedartists 0:0fdadbc3d852 340 // ###########################
embeddedartists 0:0fdadbc3d852 341
embeddedartists 0:0fdadbc3d852 342 EaLcdBoard::Result EaLcdBoard::parseInitString(char* str, LcdController::Config* cfg) {
embeddedartists 0:0fdadbc3d852 343 char* c = NULL;
embeddedartists 0:0fdadbc3d852 344 uint32_t len = 0;
embeddedartists 0:0fdadbc3d852 345 Result result = Ok;
embeddedartists 0:0fdadbc3d852 346
embeddedartists 0:0fdadbc3d852 347 if (str == NULL) {
embeddedartists 0:0fdadbc3d852 348 return InvalidCommandString;
embeddedartists 0:0fdadbc3d852 349 }
embeddedartists 0:0fdadbc3d852 350
embeddedartists 0:0fdadbc3d852 351 while(*str != '\0') {
embeddedartists 0:0fdadbc3d852 352
embeddedartists 0:0fdadbc3d852 353 // skip whitespaces
embeddedartists 0:0fdadbc3d852 354 while(*str == ' ') {
embeddedartists 0:0fdadbc3d852 355 str++;
embeddedartists 0:0fdadbc3d852 356 }
embeddedartists 0:0fdadbc3d852 357
embeddedartists 0:0fdadbc3d852 358 c = str;
embeddedartists 0:0fdadbc3d852 359
embeddedartists 0:0fdadbc3d852 360 // find end of command
embeddedartists 0:0fdadbc3d852 361 while(*str != ',' && *str != '\0') {
embeddedartists 0:0fdadbc3d852 362 str++;
embeddedartists 0:0fdadbc3d852 363 }
embeddedartists 0:0fdadbc3d852 364
embeddedartists 0:0fdadbc3d852 365 len = (str-c);
embeddedartists 0:0fdadbc3d852 366
embeddedartists 0:0fdadbc3d852 367 if (*str == ',') {
embeddedartists 0:0fdadbc3d852 368 str++;
embeddedartists 0:0fdadbc3d852 369 }
embeddedartists 0:0fdadbc3d852 370
embeddedartists 0:0fdadbc3d852 371 switch (*c++) {
embeddedartists 0:0fdadbc3d852 372
embeddedartists 0:0fdadbc3d852 373 case 'v':
embeddedartists 0:0fdadbc3d852 374 result = checkVersion(c, len-1);
embeddedartists 0:0fdadbc3d852 375 break;
embeddedartists 0:0fdadbc3d852 376
embeddedartists 0:0fdadbc3d852 377 // sequence control command (pca9532)
embeddedartists 0:0fdadbc3d852 378 case 'c':
embeddedartists 0:0fdadbc3d852 379 execSeqCtrl(c, len-1);
embeddedartists 0:0fdadbc3d852 380 break;
embeddedartists 0:0fdadbc3d852 381
embeddedartists 0:0fdadbc3d852 382 // delay
embeddedartists 0:0fdadbc3d852 383 case 'd':
embeddedartists 0:0fdadbc3d852 384 execDelay(c, len-1);
embeddedartists 0:0fdadbc3d852 385 break;
embeddedartists 0:0fdadbc3d852 386
embeddedartists 0:0fdadbc3d852 387 // open lcd (init LCD controller)
embeddedartists 0:0fdadbc3d852 388 case 'o':
embeddedartists 0:0fdadbc3d852 389
embeddedartists 0:0fdadbc3d852 390 if (cfg != NULL) {
embeddedartists 0:0fdadbc3d852 391
embeddedartists 0:0fdadbc3d852 392 if (lcdCtrl.open(cfg) != 0) {
embeddedartists 0:0fdadbc3d852 393 result = LcdAccessError;
embeddedartists 0:0fdadbc3d852 394 }
embeddedartists 0:0fdadbc3d852 395 }
embeddedartists 0:0fdadbc3d852 396
embeddedartists 0:0fdadbc3d852 397 else {
embeddedartists 0:0fdadbc3d852 398 result = InvalidArgument;
embeddedartists 0:0fdadbc3d852 399 }
embeddedartists 0:0fdadbc3d852 400
embeddedartists 0:0fdadbc3d852 401 break;
embeddedartists 0:0fdadbc3d852 402
embeddedartists 0:0fdadbc3d852 403 }
embeddedartists 0:0fdadbc3d852 404
embeddedartists 0:0fdadbc3d852 405 if (result != Ok) {
embeddedartists 0:0fdadbc3d852 406 break;
embeddedartists 0:0fdadbc3d852 407 }
embeddedartists 0:0fdadbc3d852 408
embeddedartists 0:0fdadbc3d852 409
embeddedartists 0:0fdadbc3d852 410 }
embeddedartists 0:0fdadbc3d852 411
embeddedartists 0:0fdadbc3d852 412
embeddedartists 0:0fdadbc3d852 413 return result;
embeddedartists 0:0fdadbc3d852 414 }
embeddedartists 0:0fdadbc3d852 415
embeddedartists 0:0fdadbc3d852 416 EaLcdBoard::Result EaLcdBoard::checkVersion(char* v, uint32_t len) {
embeddedartists 0:0fdadbc3d852 417 uint32_t ver = str_to_uint(v, len);
embeddedartists 0:0fdadbc3d852 418
embeddedartists 0:0fdadbc3d852 419 if (ver > LCDB_SEQ_VER) {
embeddedartists 0:0fdadbc3d852 420 return VersionNotSupported;
embeddedartists 0:0fdadbc3d852 421 }
embeddedartists 0:0fdadbc3d852 422
embeddedartists 0:0fdadbc3d852 423 return Ok;
embeddedartists 0:0fdadbc3d852 424 }
embeddedartists 0:0fdadbc3d852 425
embeddedartists 0:0fdadbc3d852 426 EaLcdBoard::Result EaLcdBoard::execDelay(char* del, uint32_t len) {
embeddedartists 0:0fdadbc3d852 427 wait_ms(str_to_uint(del, len));
embeddedartists 0:0fdadbc3d852 428
embeddedartists 0:0fdadbc3d852 429 return Ok;
embeddedartists 0:0fdadbc3d852 430 }
embeddedartists 0:0fdadbc3d852 431
embeddedartists 0:0fdadbc3d852 432 EaLcdBoard::Result EaLcdBoard::execSeqCtrl(char* cmd, uint32_t len) {
embeddedartists 0:0fdadbc3d852 433
embeddedartists 0:0fdadbc3d852 434 switch (*cmd++) {
embeddedartists 0:0fdadbc3d852 435
embeddedartists 0:0fdadbc3d852 436 // display enable
embeddedartists 0:0fdadbc3d852 437 case 'd':
embeddedartists 0:0fdadbc3d852 438 setDisplayEnableSignal(*cmd == '1');
embeddedartists 0:0fdadbc3d852 439 break;
embeddedartists 0:0fdadbc3d852 440
embeddedartists 0:0fdadbc3d852 441 // backlight contrast
embeddedartists 0:0fdadbc3d852 442 case 'c':
embeddedartists 0:0fdadbc3d852 443 setBacklightContrast(str_to_uint(cmd, len));
embeddedartists 0:0fdadbc3d852 444 break;
embeddedartists 0:0fdadbc3d852 445
embeddedartists 0:0fdadbc3d852 446 // 3v3 enable
embeddedartists 0:0fdadbc3d852 447 case '3':
embeddedartists 0:0fdadbc3d852 448 set3V3Signal(*cmd == '1');
embeddedartists 0:0fdadbc3d852 449 break;
embeddedartists 0:0fdadbc3d852 450
embeddedartists 0:0fdadbc3d852 451 // 5v enable
embeddedartists 0:0fdadbc3d852 452 case '5':
embeddedartists 0:0fdadbc3d852 453 set5VSignal(*cmd == '1');
embeddedartists 0:0fdadbc3d852 454 break;
embeddedartists 0:0fdadbc3d852 455 }
embeddedartists 0:0fdadbc3d852 456
embeddedartists 0:0fdadbc3d852 457 return Ok;
embeddedartists 0:0fdadbc3d852 458 }
embeddedartists 0:0fdadbc3d852 459
embeddedartists 0:0fdadbc3d852 460 // ###########################
embeddedartists 0:0fdadbc3d852 461 // PCA9532 is used as a control inteface to the display.
embeddedartists 0:0fdadbc3d852 462 // voltages can be turned on/off and backlight can be controlled.
embeddedartists 0:0fdadbc3d852 463 // ###########################
embeddedartists 0:0fdadbc3d852 464
embeddedartists 0:0fdadbc3d852 465 // Helper function to set LED states
embeddedartists 0:0fdadbc3d852 466 void EaLcdBoard::setLsStates(uint16_t states, uint8_t* ls, uint8_t mode)
embeddedartists 0:0fdadbc3d852 467 {
embeddedartists 0:0fdadbc3d852 468 #define IS_LED_SET(bit, x) ( ( ((x) & (bit)) != 0 ) ? 1 : 0 )
embeddedartists 0:0fdadbc3d852 469
embeddedartists 0:0fdadbc3d852 470 int i = 0;
embeddedartists 0:0fdadbc3d852 471
embeddedartists 0:0fdadbc3d852 472 for (i = 0; i < 4; i++) {
embeddedartists 0:0fdadbc3d852 473
embeddedartists 0:0fdadbc3d852 474 ls[i] |= ( (IS_LED_SET(0x0001, states)*mode << 0)
embeddedartists 0:0fdadbc3d852 475 | (IS_LED_SET(0x0002, states)*mode << 2)
embeddedartists 0:0fdadbc3d852 476 | (IS_LED_SET(0x0004, states)*mode << 4)
embeddedartists 0:0fdadbc3d852 477 | (IS_LED_SET(0x0008, states)*mode << 6) );
embeddedartists 0:0fdadbc3d852 478
embeddedartists 0:0fdadbc3d852 479 states >>= 4;
embeddedartists 0:0fdadbc3d852 480 }
embeddedartists 0:0fdadbc3d852 481 }
embeddedartists 0:0fdadbc3d852 482
embeddedartists 0:0fdadbc3d852 483 void EaLcdBoard::setLeds(void)
embeddedartists 0:0fdadbc3d852 484 {
embeddedartists 0:0fdadbc3d852 485 uint8_t buf[5];
embeddedartists 0:0fdadbc3d852 486 uint8_t ls[4] = {0,0,0,0};
embeddedartists 0:0fdadbc3d852 487 uint16_t states = _ledStateShadow;
embeddedartists 0:0fdadbc3d852 488
embeddedartists 0:0fdadbc3d852 489 // LEDs in On/Off state
embeddedartists 0:0fdadbc3d852 490 setLsStates(states, ls, LCDB_LS_MODE_ON);
embeddedartists 0:0fdadbc3d852 491
embeddedartists 0:0fdadbc3d852 492 // set the LEDs that should blink
embeddedartists 0:0fdadbc3d852 493 setLsStates(_blink0Shadow, ls, LCDB_LS_MODE_BLINK0);
embeddedartists 0:0fdadbc3d852 494 setLsStates(_blink1Shadow, ls, LCDB_LS_MODE_BLINK1);
embeddedartists 0:0fdadbc3d852 495
embeddedartists 0:0fdadbc3d852 496 buf[0] = LCDB_PCA9532_LS0 | LCDB_PCA9532_AUTO_INC;
embeddedartists 0:0fdadbc3d852 497 buf[1] = ls[0];
embeddedartists 0:0fdadbc3d852 498 buf[2] = ls[1];
embeddedartists 0:0fdadbc3d852 499 buf[3] = ls[2];
embeddedartists 0:0fdadbc3d852 500 buf[4] = ls[3];
embeddedartists 0:0fdadbc3d852 501
embeddedartists 0:0fdadbc3d852 502 _i2c.write(LCDB_PCA9532_I2C_ADDR, (char*)buf, 5);
embeddedartists 0:0fdadbc3d852 503 }
embeddedartists 0:0fdadbc3d852 504
embeddedartists 0:0fdadbc3d852 505 void EaLcdBoard::pca9532_setLeds (uint16_t ledOnMask, uint16_t ledOffMask)
embeddedartists 0:0fdadbc3d852 506 {
embeddedartists 0:0fdadbc3d852 507 // turn off leds
embeddedartists 0:0fdadbc3d852 508 _ledStateShadow &= (~(ledOffMask) & 0xffff);
embeddedartists 0:0fdadbc3d852 509
embeddedartists 0:0fdadbc3d852 510 // ledOnMask has priority over ledOffMask
embeddedartists 0:0fdadbc3d852 511 _ledStateShadow |= ledOnMask;
embeddedartists 0:0fdadbc3d852 512
embeddedartists 0:0fdadbc3d852 513 // turn off blinking
embeddedartists 0:0fdadbc3d852 514 _blink0Shadow &= (~(ledOffMask) & 0xffff);
embeddedartists 0:0fdadbc3d852 515 _blink1Shadow &= (~(ledOffMask) & 0xffff);
embeddedartists 0:0fdadbc3d852 516
embeddedartists 0:0fdadbc3d852 517 setLeds();
embeddedartists 0:0fdadbc3d852 518 }
embeddedartists 0:0fdadbc3d852 519
embeddedartists 0:0fdadbc3d852 520 void EaLcdBoard::pca9532_setBlink0Period(uint8_t period)
embeddedartists 0:0fdadbc3d852 521 {
embeddedartists 0:0fdadbc3d852 522 uint8_t buf[2];
embeddedartists 0:0fdadbc3d852 523
embeddedartists 0:0fdadbc3d852 524 buf[0] = LCDB_PCA9532_PSC0;
embeddedartists 0:0fdadbc3d852 525 buf[1] = period;
embeddedartists 0:0fdadbc3d852 526
embeddedartists 0:0fdadbc3d852 527 _i2c.write(LCDB_PCA9532_I2C_ADDR, (char*)buf, 2);
embeddedartists 0:0fdadbc3d852 528 }
embeddedartists 0:0fdadbc3d852 529
embeddedartists 0:0fdadbc3d852 530 void EaLcdBoard::pca9532_setBlink0Duty(uint8_t duty)
embeddedartists 0:0fdadbc3d852 531 {
embeddedartists 0:0fdadbc3d852 532 uint8_t buf[2];
embeddedartists 0:0fdadbc3d852 533 uint32_t tmp = duty;
embeddedartists 0:0fdadbc3d852 534 if (tmp > 100) {
embeddedartists 0:0fdadbc3d852 535 tmp = 100;
embeddedartists 0:0fdadbc3d852 536 }
embeddedartists 0:0fdadbc3d852 537
embeddedartists 0:0fdadbc3d852 538 tmp = (255 * tmp)/100;
embeddedartists 0:0fdadbc3d852 539
embeddedartists 0:0fdadbc3d852 540 buf[0] = LCDB_PCA9532_PWM0;
embeddedartists 0:0fdadbc3d852 541 buf[1] = tmp;
embeddedartists 0:0fdadbc3d852 542
embeddedartists 0:0fdadbc3d852 543 _i2c.write(LCDB_PCA9532_I2C_ADDR, (char*)buf, 2);
embeddedartists 0:0fdadbc3d852 544 }
embeddedartists 0:0fdadbc3d852 545
embeddedartists 0:0fdadbc3d852 546 void EaLcdBoard::pca9532_setBlink0Leds(uint16_t ledMask)
embeddedartists 0:0fdadbc3d852 547 {
embeddedartists 0:0fdadbc3d852 548 _blink0Shadow |= ledMask;
embeddedartists 0:0fdadbc3d852 549 setLeds();
embeddedartists 0:0fdadbc3d852 550 }
embeddedartists 0:0fdadbc3d852 551
embeddedartists 0:0fdadbc3d852 552 void EaLcdBoard::set3V3Signal(bool enabled) {
embeddedartists 0:0fdadbc3d852 553 if (enabled) {
embeddedartists 0:0fdadbc3d852 554 pca9532_setLeds(LCDB_CTRL_3V3, 0);
embeddedartists 0:0fdadbc3d852 555 } else {
embeddedartists 0:0fdadbc3d852 556 pca9532_setLeds(0, LCDB_CTRL_3V3);
embeddedartists 0:0fdadbc3d852 557 }
embeddedartists 0:0fdadbc3d852 558 }
embeddedartists 0:0fdadbc3d852 559
embeddedartists 0:0fdadbc3d852 560 void EaLcdBoard::set5VSignal(bool enabled) {
embeddedartists 0:0fdadbc3d852 561 if (enabled) {
embeddedartists 0:0fdadbc3d852 562 pca9532_setLeds(LCDB_CTRL_5V, 0);
embeddedartists 0:0fdadbc3d852 563 } else {
embeddedartists 0:0fdadbc3d852 564 pca9532_setLeds(0, LCDB_CTRL_5V);
embeddedartists 0:0fdadbc3d852 565 }
embeddedartists 0:0fdadbc3d852 566 }
embeddedartists 0:0fdadbc3d852 567
embeddedartists 0:0fdadbc3d852 568 void EaLcdBoard::setDisplayEnableSignal(bool enabled) {
embeddedartists 0:0fdadbc3d852 569 if (!enabled) {
embeddedartists 0:0fdadbc3d852 570 pca9532_setLeds(LCDB_CTRL_DISP_EN, 0);
embeddedartists 0:0fdadbc3d852 571 } else {
embeddedartists 0:0fdadbc3d852 572 pca9532_setLeds(0, LCDB_CTRL_DISP_EN);
embeddedartists 0:0fdadbc3d852 573 }
embeddedartists 0:0fdadbc3d852 574 }
embeddedartists 0:0fdadbc3d852 575
embeddedartists 0:0fdadbc3d852 576 void EaLcdBoard::setBacklightContrast(uint32_t value) {
embeddedartists 0:0fdadbc3d852 577
embeddedartists 0:0fdadbc3d852 578 if (value > 100) return;
embeddedartists 0:0fdadbc3d852 579
embeddedartists 0:0fdadbc3d852 580 pca9532_setBlink0Duty(100-value);
embeddedartists 0:0fdadbc3d852 581 pca9532_setBlink0Period(0);
embeddedartists 0:0fdadbc3d852 582 pca9532_setBlink0Leds(LCDB_CTRL_BL_C);
embeddedartists 0:0fdadbc3d852 583 }
embeddedartists 0:0fdadbc3d852 584
embeddedartists 0:0fdadbc3d852 585
embeddedartists 0:0fdadbc3d852 586 // convert string to integer
embeddedartists 0:0fdadbc3d852 587 static uint32_t str_to_uint(char* str, uint32_t len)
embeddedartists 0:0fdadbc3d852 588 {
embeddedartists 0:0fdadbc3d852 589 uint32_t val = 0;
embeddedartists 0:0fdadbc3d852 590
embeddedartists 0:0fdadbc3d852 591 while(len > 0 && *str <= '9' && *str >= '0') {
embeddedartists 0:0fdadbc3d852 592 val = (val * 10) + (*str - '0');
embeddedartists 0:0fdadbc3d852 593 str++;
embeddedartists 0:0fdadbc3d852 594 len--;
embeddedartists 0:0fdadbc3d852 595 }
embeddedartists 0:0fdadbc3d852 596
embeddedartists 0:0fdadbc3d852 597 return val;
embeddedartists 0:0fdadbc3d852 598 }
embeddedartists 0:0fdadbc3d852 599
embeddedartists 0:0fdadbc3d852 600
embeddedartists 0:0fdadbc3d852 601
embeddedartists 0:0fdadbc3d852 602