Hawk Eye / Mbed 2 deprecated Phoner

EPD

Dependencies:   mbed-STM32F103C8T6 mbed

main.cpp@0:1d2c0afef43c, 2017-12-29 (annotated)

Committer:
spin7ion
Date:
Fri Dec 29 22:35:18 2017 +0000
Revision:
0:1d2c0afef43c
test;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
spin7ion 0:1d2c0afef43c 1 #include "stm32f103c8t6.h"
spin7ion 0:1d2c0afef43c 2 #include "mbed.h"
spin7ion 0:1d2c0afef43c 3 #include "epd.h"
spin7ion 0:1d2c0afef43c 4
spin7ion 0:1d2c0afef43c 5 DigitalOut myled1(LED1);
spin7ion 0:1d2c0afef43c 6
spin7ion 0:1d2c0afef43c 7 DigitalOut edp_reset(PB_0);
spin7ion 0:1d2c0afef43c 8 DigitalOut edp_dataCommand(PB_10);
spin7ion 0:1d2c0afef43c 9 DigitalOut edp_chipSelect(PA_4);
spin7ion 0:1d2c0afef43c 10 DigitalIn edp_busy(PB_11);
spin7ion 0:1d2c0afef43c 11 SPI spi(PA_7,PA_6,PA_5); // mosi, miso, sclk, ss
spin7ion 0:1d2c0afef43c 12 //DigitalOut eink(PB_0);
spin7ion 0:1d2c0afef43c 13 /*
spin7ion 0:1d2c0afef43c 14 EaEpaper epaper(NC, // PWR_CTRL
spin7ion 0:1d2c0afef43c 15 NC, // BORDER
spin7ion 0:1d2c0afef43c 16 PB_10, // DISCHARGE
spin7ion 0:1d2c0afef43c 17 PB_0, // RESET_DISP
spin7ion 0:1d2c0afef43c 18 PB_11, // BUSY
spin7ion 0:1d2c0afef43c 19 PA_4, // SSEL
spin7ion 0:1d2c0afef43c 20 NC, // PWM
spin7ion 0:1d2c0afef43c 21 PA_7,PA_6,PA_5, // MOSI,MISO,SCLK
spin7ion 0:1d2c0afef43c 22 "eink"); // SDA,SCL */
spin7ion 0:1d2c0afef43c 23
spin7ion 0:1d2c0afef43c 24 void EPD_SendCommand(unsigned char data) {
spin7ion 0:1d2c0afef43c 25 edp_chipSelect=0;
spin7ion 0:1d2c0afef43c 26 edp_dataCommand=0;
spin7ion 0:1d2c0afef43c 27 spi.write(data);
spin7ion 0:1d2c0afef43c 28 edp_chipSelect=1;
spin7ion 0:1d2c0afef43c 29 }
spin7ion 0:1d2c0afef43c 30
spin7ion 0:1d2c0afef43c 31 void EPD_SendData(unsigned char data) {
spin7ion 0:1d2c0afef43c 32 edp_chipSelect=0;
spin7ion 0:1d2c0afef43c 33 edp_dataCommand=1;
spin7ion 0:1d2c0afef43c 34 spi.write(data);
spin7ion 0:1d2c0afef43c 35 edp_chipSelect=1;
spin7ion 0:1d2c0afef43c 36 }
spin7ion 0:1d2c0afef43c 37
spin7ion 0:1d2c0afef43c 38 void EPD_Reset() {
spin7ion 0:1d2c0afef43c 39 edp_reset=0;
spin7ion 0:1d2c0afef43c 40 wait_ms(200);
spin7ion 0:1d2c0afef43c 41 edp_reset=1;
spin7ion 0:1d2c0afef43c 42 wait_ms(200);
spin7ion 0:1d2c0afef43c 43 }
spin7ion 0:1d2c0afef43c 44
spin7ion 0:1d2c0afef43c 45 void EPD_WaitUntilIdle() {
spin7ion 0:1d2c0afef43c 46 while(edp_busy == 1) { //0: busy, 1: idle
spin7ion 0:1d2c0afef43c 47 wait_ms(100);
spin7ion 0:1d2c0afef43c 48 }
spin7ion 0:1d2c0afef43c 49 }
spin7ion 0:1d2c0afef43c 50
spin7ion 0:1d2c0afef43c 51 /**
spin7ion 0:1d2c0afef43c 52 * @brief: private function to specify the memory area for data R/W
spin7ion 0:1d2c0afef43c 53 */
spin7ion 0:1d2c0afef43c 54 static void EPD_SetMemoryArea(int x_start, int y_start, int x_end, int y_end) {
spin7ion 0:1d2c0afef43c 55 EPD_SendCommand(SET_RAM_X_ADDRESS_START_END_POSITION);
spin7ion 0:1d2c0afef43c 56 /* x point must be the multiple of 8 or the last 3 bits will be ignored */
spin7ion 0:1d2c0afef43c 57 EPD_SendData((x_start >> 3) & 0xFF);
spin7ion 0:1d2c0afef43c 58 EPD_SendData((x_end >> 3) & 0xFF);
spin7ion 0:1d2c0afef43c 59 EPD_SendCommand(SET_RAM_Y_ADDRESS_START_END_POSITION);
spin7ion 0:1d2c0afef43c 60 EPD_SendData(y_start & 0xFF);
spin7ion 0:1d2c0afef43c 61 EPD_SendData((y_start >> 8) & 0xFF);
spin7ion 0:1d2c0afef43c 62 EPD_SendData(y_end & 0xFF);
spin7ion 0:1d2c0afef43c 63 EPD_SendData((y_end >> 8) & 0xFF);
spin7ion 0:1d2c0afef43c 64 }
spin7ion 0:1d2c0afef43c 65
spin7ion 0:1d2c0afef43c 66 /**
spin7ion 0:1d2c0afef43c 67 * @brief: private function to specify the start point for data R/W
spin7ion 0:1d2c0afef43c 68 */
spin7ion 0:1d2c0afef43c 69 static void EPD_SetMemoryPointer(int x, int y) {
spin7ion 0:1d2c0afef43c 70 EPD_SendCommand(SET_RAM_X_ADDRESS_COUNTER);
spin7ion 0:1d2c0afef43c 71 /* x point must be the multiple of 8 or the last 3 bits will be ignored */
spin7ion 0:1d2c0afef43c 72 EPD_SendData((x >> 3) & 0xFF);
spin7ion 0:1d2c0afef43c 73 EPD_SendCommand(SET_RAM_Y_ADDRESS_COUNTER);
spin7ion 0:1d2c0afef43c 74 EPD_SendData(y & 0xFF);
spin7ion 0:1d2c0afef43c 75 EPD_SendData((y >> 8) & 0xFF);
spin7ion 0:1d2c0afef43c 76 EPD_WaitUntilIdle();
spin7ion 0:1d2c0afef43c 77 }
spin7ion 0:1d2c0afef43c 78
spin7ion 0:1d2c0afef43c 79 void EPD_SetLut(const unsigned char* lut) {
spin7ion 0:1d2c0afef43c 80 EPD_SendCommand(WRITE_LUT_REGISTER);
spin7ion 0:1d2c0afef43c 81 /* the length of look-up table is 30 bytes */
spin7ion 0:1d2c0afef43c 82 for (int i = 0; i < 30; i++) {
spin7ion 0:1d2c0afef43c 83 EPD_SendData(lut[i]);
spin7ion 0:1d2c0afef43c 84 }
spin7ion 0:1d2c0afef43c 85 }
spin7ion 0:1d2c0afef43c 86
spin7ion 0:1d2c0afef43c 87 int EPD_Init() {
spin7ion 0:1d2c0afef43c 88 EPD_Reset();
spin7ion 0:1d2c0afef43c 89 EPD_SendCommand(DRIVER_OUTPUT_CONTROL);
spin7ion 0:1d2c0afef43c 90 EPD_SendData((EPD_HEIGHT - 1) & 0xFF);
spin7ion 0:1d2c0afef43c 91 EPD_SendData(((EPD_HEIGHT - 1) >> 8) & 0xFF);
spin7ion 0:1d2c0afef43c 92 EPD_SendData(0x00); // GD = 0; SM = 0; TB = 0;
spin7ion 0:1d2c0afef43c 93 EPD_SendCommand(BOOSTER_SOFT_START_CONTROL);
spin7ion 0:1d2c0afef43c 94 EPD_SendData(0xD7);
spin7ion 0:1d2c0afef43c 95 EPD_SendData(0xD6);
spin7ion 0:1d2c0afef43c 96 EPD_SendData(0x9D);
spin7ion 0:1d2c0afef43c 97 EPD_SendCommand(WRITE_VCOM_REGISTER);
spin7ion 0:1d2c0afef43c 98 EPD_SendData(0xA8); // VCOM 7C
spin7ion 0:1d2c0afef43c 99 EPD_SendCommand(SET_DUMMY_LINE_PERIOD);
spin7ion 0:1d2c0afef43c 100 EPD_SendData(0x1A); // 4 dummy lines per gate
spin7ion 0:1d2c0afef43c 101 EPD_SendCommand(SET_GATE_TIME);
spin7ion 0:1d2c0afef43c 102 EPD_SendData(0x08); // 2us per line
spin7ion 0:1d2c0afef43c 103 EPD_SendCommand(DATA_ENTRY_MODE_SETTING);
spin7ion 0:1d2c0afef43c 104 EPD_SendData(0x03); // X increment; Y increment
spin7ion 0:1d2c0afef43c 105 EPD_SetLut(lut_full_update);
spin7ion 0:1d2c0afef43c 106 //EPD_SetLut(lut_partial_update);
spin7ion 0:1d2c0afef43c 107 /* EPD hardware init end */
spin7ion 0:1d2c0afef43c 108 return 0;
spin7ion 0:1d2c0afef43c 109 }
spin7ion 0:1d2c0afef43c 110
spin7ion 0:1d2c0afef43c 111 /**
spin7ion 0:1d2c0afef43c 112 * @brief: put an image buffer to the frame memory.
spin7ion 0:1d2c0afef43c 113 * this won't update the display.
spin7ion 0:1d2c0afef43c 114 */
spin7ion 0:1d2c0afef43c 115 void EPD_SetFrameMemory(
spin7ion 0:1d2c0afef43c 116 const unsigned char* image_buffer,
spin7ion 0:1d2c0afef43c 117 int x,
spin7ion 0:1d2c0afef43c 118 int y,
spin7ion 0:1d2c0afef43c 119 int image_width,
spin7ion 0:1d2c0afef43c 120 int image_height
spin7ion 0:1d2c0afef43c 121 ) {
spin7ion 0:1d2c0afef43c 122 int x_end;
spin7ion 0:1d2c0afef43c 123 int y_end;
spin7ion 0:1d2c0afef43c 124
spin7ion 0:1d2c0afef43c 125 if (
spin7ion 0:1d2c0afef43c 126 image_buffer == NULL ||
spin7ion 0:1d2c0afef43c 127 x < 0 || image_width < 0 ||
spin7ion 0:1d2c0afef43c 128 y < 0 || image_height < 0
spin7ion 0:1d2c0afef43c 129 ) {
spin7ion 0:1d2c0afef43c 130 return;
spin7ion 0:1d2c0afef43c 131 }
spin7ion 0:1d2c0afef43c 132 /* x point must be the multiple of 8 or the last 3 bits will be ignored */
spin7ion 0:1d2c0afef43c 133 x &= 0xF8;
spin7ion 0:1d2c0afef43c 134 image_width &= 0xF8;
spin7ion 0:1d2c0afef43c 135 if (x + image_width >= EPD_WIDTH) {
spin7ion 0:1d2c0afef43c 136 x_end = EPD_WIDTH - 1;
spin7ion 0:1d2c0afef43c 137 } else {
spin7ion 0:1d2c0afef43c 138 x_end = x + image_width - 1;
spin7ion 0:1d2c0afef43c 139 }
spin7ion 0:1d2c0afef43c 140 if (y + image_height >= EPD_HEIGHT) {
spin7ion 0:1d2c0afef43c 141 y_end = EPD_HEIGHT - 1;
spin7ion 0:1d2c0afef43c 142 } else {
spin7ion 0:1d2c0afef43c 143 y_end = y + image_height - 1;
spin7ion 0:1d2c0afef43c 144 }
spin7ion 0:1d2c0afef43c 145 EPD_SetMemoryArea(x, y, x_end, y_end);
spin7ion 0:1d2c0afef43c 146 EPD_SetMemoryPointer(x, y);
spin7ion 0:1d2c0afef43c 147 EPD_SendCommand(WRITE_RAM);
spin7ion 0:1d2c0afef43c 148 /* send the image data */
spin7ion 0:1d2c0afef43c 149 for (int j = 0; j < y_end - y + 1; j++) {
spin7ion 0:1d2c0afef43c 150 for (int i = 0; i < (x_end - x + 1) / 8; i++) {
spin7ion 0:1d2c0afef43c 151 EPD_SendData(image_buffer[i + j * (image_width / 8)]);
spin7ion 0:1d2c0afef43c 152 }
spin7ion 0:1d2c0afef43c 153 }
spin7ion 0:1d2c0afef43c 154 }
spin7ion 0:1d2c0afef43c 155
spin7ion 0:1d2c0afef43c 156 /**
spin7ion 0:1d2c0afef43c 157 * @brief: clear the frame memory with the specified color.
spin7ion 0:1d2c0afef43c 158 * this won't update the display.
spin7ion 0:1d2c0afef43c 159 */
spin7ion 0:1d2c0afef43c 160 void EPD_ClearFrameMemory(unsigned char color) {
spin7ion 0:1d2c0afef43c 161 EPD_SetMemoryArea(0, 0, EPD_WIDTH - 1, EPD_HEIGHT - 1);
spin7ion 0:1d2c0afef43c 162 EPD_SetMemoryPointer(0, 0);
spin7ion 0:1d2c0afef43c 163 EPD_SendCommand(WRITE_RAM);
spin7ion 0:1d2c0afef43c 164 /* send the color data */
spin7ion 0:1d2c0afef43c 165 for (int i = 0; i < EPD_WIDTH / 8 * EPD_HEIGHT; i++) {
spin7ion 0:1d2c0afef43c 166 EPD_SendData(color);
spin7ion 0:1d2c0afef43c 167 }
spin7ion 0:1d2c0afef43c 168 }
spin7ion 0:1d2c0afef43c 169
spin7ion 0:1d2c0afef43c 170 /**
spin7ion 0:1d2c0afef43c 171 * @brief: update the display
spin7ion 0:1d2c0afef43c 172 * there are 2 memory areas embedded in the e-paper display
spin7ion 0:1d2c0afef43c 173 * but once this function is called,
spin7ion 0:1d2c0afef43c 174 * the the next action of SetFrameMemory or ClearFrame will
spin7ion 0:1d2c0afef43c 175 * set the other memory area.
spin7ion 0:1d2c0afef43c 176 */
spin7ion 0:1d2c0afef43c 177 void EPD_DisplayFrame() {
spin7ion 0:1d2c0afef43c 178 EPD_SendCommand(DISPLAY_UPDATE_CONTROL_2);
spin7ion 0:1d2c0afef43c 179 EPD_SendData(0xC4);
spin7ion 0:1d2c0afef43c 180 EPD_SendCommand(MASTER_ACTIVATION);
spin7ion 0:1d2c0afef43c 181 EPD_SendCommand(TERMINATE_FRAME_READ_WRITE);
spin7ion 0:1d2c0afef43c 182 EPD_WaitUntilIdle();
spin7ion 0:1d2c0afef43c 183 }
spin7ion 0:1d2c0afef43c 184
spin7ion 0:1d2c0afef43c 185 /**
spin7ion 0:1d2c0afef43c 186 * @brief: After this command is transmitted, the chip would enter the
spin7ion 0:1d2c0afef43c 187 * deep-sleep mode to save power.
spin7ion 0:1d2c0afef43c 188 * The deep sleep mode would return to standby by hardware reset.
spin7ion 0:1d2c0afef43c 189 * You can use EPD_Init() to awaken
spin7ion 0:1d2c0afef43c 190 */
spin7ion 0:1d2c0afef43c 191 void EPD_Sleep() {
spin7ion 0:1d2c0afef43c 192 EPD_SendCommand(DEEP_SLEEP_MODE);
spin7ion 0:1d2c0afef43c 193 EPD_WaitUntilIdle();
spin7ion 0:1d2c0afef43c 194 }
spin7ion 0:1d2c0afef43c 195
spin7ion 0:1d2c0afef43c 196 void setChar(char chr, int x, int y, unsigned char color){
spin7ion 0:1d2c0afef43c 197 unsigned char arr[8];
spin7ion 0:1d2c0afef43c 198 memcpy(arr, (unsigned char*)&(FONT8x8[chr - 0x1F][0]), 8);
spin7ion 0:1d2c0afef43c 199
spin7ion 0:1d2c0afef43c 200 if(color==0){
spin7ion 0:1d2c0afef43c 201 for(int i=0;i<8;i++){
spin7ion 0:1d2c0afef43c 202 arr[i]=~arr[i];
spin7ion 0:1d2c0afef43c 203 }
spin7ion 0:1d2c0afef43c 204 }
spin7ion 0:1d2c0afef43c 205
spin7ion 0:1d2c0afef43c 206 EPD_SetFrameMemory(arr,x,y,8,8);
spin7ion 0:1d2c0afef43c 207 }
spin7ion 0:1d2c0afef43c 208
spin7ion 0:1d2c0afef43c 209 void setString(char *str, int len, int x, int y, unsigned char color){
spin7ion 0:1d2c0afef43c 210 for (int i=0;i<len;i++) {
spin7ion 0:1d2c0afef43c 211 if(str[i]=='\n' && i<len-1){y+=8;i++;x-=i*8;}
spin7ion 0:1d2c0afef43c 212 setChar(str[i], x+i*8, y, color);
spin7ion 0:1d2c0afef43c 213 }
spin7ion 0:1d2c0afef43c 214 }
spin7ion 0:1d2c0afef43c 215
spin7ion 0:1d2c0afef43c 216 int main() {
spin7ion 0:1d2c0afef43c 217 confSysClock();
spin7ion 0:1d2c0afef43c 218 spi.format(8,0);
spin7ion 0:1d2c0afef43c 219 spi.frequency(4000000);
spin7ion 0:1d2c0afef43c 220
spin7ion 0:1d2c0afef43c 221 EPD_Init();
spin7ion 0:1d2c0afef43c 222
spin7ion 0:1d2c0afef43c 223 //EPD_ClearFrameMemory(BACKGROUND_WHITE);
spin7ion 0:1d2c0afef43c 224 //EPD_DisplayFrame();
spin7ion 0:1d2c0afef43c 225 setString("Alexander\nSemion",16,0,0,0);
spin7ion 0:1d2c0afef43c 226 EPD_DisplayFrame();
spin7ion 0:1d2c0afef43c 227 /*unsigned char arr[]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
spin7ion 0:1d2c0afef43c 228 EPD_SetFrameMemory((unsigned char*)&(FONT8x8['S' - 0x1F][0]),0,0,8,8);
spin7ion 0:1d2c0afef43c 229 EPD_SetFrameMemory((unsigned char*)&(FONT8x8['P' - 0x1F][0]),8,0,8,8);
spin7ion 0:1d2c0afef43c 230 EPD_SetFrameMemory((unsigned char*)&(FONT8x8['I' - 0x1F][0]),16,0,8,8);
spin7ion 0:1d2c0afef43c 231 EPD_SetFrameMemory((unsigned char*)&(FONT8x8['N' - 0x1F][0]),24,0,8,8);
spin7ion 0:1d2c0afef43c 232 EPD_SetFrameMemory((unsigned char*)&(FONT8x8['7' - 0x1F][0]),32,0,8,8);
spin7ion 0:1d2c0afef43c 233 EPD_SetFrameMemory((unsigned char*)&(FONT8x8['I' - 0x1F][0]),40,0,8,8);
spin7ion 0:1d2c0afef43c 234 EPD_SetFrameMemory((unsigned char*)&(FONT8x8['O' - 0x1F][0]),48,0,8,8);
spin7ion 0:1d2c0afef43c 235 EPD_SetFrameMemory((unsigned char*)&(FONT8x8['N' - 0x1F][0]),56,0,8,8);
spin7ion 0:1d2c0afef43c 236 EPD_DisplayFrame();*/
spin7ion 0:1d2c0afef43c 237 /*
spin7ion 0:1d2c0afef43c 238 while(1){
spin7ion 0:1d2c0afef43c 239 myled1 = 1;
spin7ion 0:1d2c0afef43c 240 wait_ms(1000);
spin7ion 0:1d2c0afef43c 241 myled1 = 0;
spin7ion 0:1d2c0afef43c 242 wait_ms(1000);
spin7ion 0:1d2c0afef43c 243 }*/
spin7ion 0:1d2c0afef43c 244 }