Peter Drescher's library for the Embedded Artists E-paper display, but modified to also support the LPC4088 QuickStart Board
Fork of EaEpaper by
EPD.cpp@0:fedcef5319f5, 2013-11-09 (annotated)
- Committer:
- dreschpe
- Date:
- Sat Nov 09 23:37:43 2013 +0000
- Revision:
- 0:fedcef5319f5
- Child:
- 3:6fb3e296a6fd
Lib for using a E-Paper display from Pervasive Displays.; There is a interface board from Embedded Artists.; It can handle graphic and text drawing and is using external fonts.
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
dreschpe | 0:fedcef5319f5 | 1 | // Copyright 2013 Pervasive Displays, Inc. |
dreschpe | 0:fedcef5319f5 | 2 | // |
dreschpe | 0:fedcef5319f5 | 3 | // Licensed under the Apache License, Version 2.0 (the "License"); |
dreschpe | 0:fedcef5319f5 | 4 | // you may not use this file except in compliance with the License. |
dreschpe | 0:fedcef5319f5 | 5 | // You may obtain a copy of the License at: |
dreschpe | 0:fedcef5319f5 | 6 | // |
dreschpe | 0:fedcef5319f5 | 7 | // http://www.apache.org/licenses/LICENSE-2.0 |
dreschpe | 0:fedcef5319f5 | 8 | // |
dreschpe | 0:fedcef5319f5 | 9 | // Unless required by applicable law or agreed to in writing, |
dreschpe | 0:fedcef5319f5 | 10 | // software distributed under the License is distributed on an |
dreschpe | 0:fedcef5319f5 | 11 | // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either |
dreschpe | 0:fedcef5319f5 | 12 | // express or implied. See the License for the specific language |
dreschpe | 0:fedcef5319f5 | 13 | // governing permissions and limitations under the License. |
dreschpe | 0:fedcef5319f5 | 14 | |
dreschpe | 0:fedcef5319f5 | 15 | |
dreschpe | 0:fedcef5319f5 | 16 | |
dreschpe | 0:fedcef5319f5 | 17 | #include <limits.h> |
dreschpe | 0:fedcef5319f5 | 18 | |
dreschpe | 0:fedcef5319f5 | 19 | #include "EPD.h" |
dreschpe | 0:fedcef5319f5 | 20 | #include "mbed.h" |
dreschpe | 0:fedcef5319f5 | 21 | #include "BurstSPI.h" |
dreschpe | 0:fedcef5319f5 | 22 | |
dreschpe | 0:fedcef5319f5 | 23 | |
dreschpe | 0:fedcef5319f5 | 24 | // delays - more consistent naming |
dreschpe | 0:fedcef5319f5 | 25 | #define Delay_ms(ms) wait_ms(ms) |
dreschpe | 0:fedcef5319f5 | 26 | #define Delay_us(us) wait_us(us) |
dreschpe | 0:fedcef5319f5 | 27 | |
dreschpe | 0:fedcef5319f5 | 28 | // inline arrays |
dreschpe | 0:fedcef5319f5 | 29 | #define ARRAY(type, ...) ((type[]){__VA_ARGS__}) |
dreschpe | 0:fedcef5319f5 | 30 | #define CU8(...) (ARRAY(const uint8_t, __VA_ARGS__)) |
dreschpe | 0:fedcef5319f5 | 31 | |
dreschpe | 0:fedcef5319f5 | 32 | #define LOW (0) |
dreschpe | 0:fedcef5319f5 | 33 | #define HIGH (1) |
dreschpe | 0:fedcef5319f5 | 34 | #define digitalWrite(pin, state) (pin) = (state) |
dreschpe | 0:fedcef5319f5 | 35 | #define digitalRead(pin) (pin) |
dreschpe | 0:fedcef5319f5 | 36 | |
dreschpe | 0:fedcef5319f5 | 37 | Timer _time; |
dreschpe | 0:fedcef5319f5 | 38 | #define millis() _time.read_ms() |
dreschpe | 0:fedcef5319f5 | 39 | #define millis_start() _time.start() |
dreschpe | 0:fedcef5319f5 | 40 | |
dreschpe | 0:fedcef5319f5 | 41 | |
dreschpe | 0:fedcef5319f5 | 42 | //static void PWM_start(int pin); |
dreschpe | 0:fedcef5319f5 | 43 | //static void PWM_stop(int pin); |
dreschpe | 0:fedcef5319f5 | 44 | |
dreschpe | 0:fedcef5319f5 | 45 | //static void SPI_put(uint8_t c); |
dreschpe | 0:fedcef5319f5 | 46 | //static void SPI_put_wait(uint8_t c, int busy_pin); |
dreschpe | 0:fedcef5319f5 | 47 | //static void SPI_send(uint8_t cs_pin, const uint8_t *buffer, uint16_t length); |
dreschpe | 0:fedcef5319f5 | 48 | |
dreschpe | 0:fedcef5319f5 | 49 | |
dreschpe | 0:fedcef5319f5 | 50 | EPD_Class::EPD_Class(EPD_size size, |
dreschpe | 0:fedcef5319f5 | 51 | PinName panel_on_pin, |
dreschpe | 0:fedcef5319f5 | 52 | PinName border_pin, |
dreschpe | 0:fedcef5319f5 | 53 | PinName discharge_pin, |
dreschpe | 0:fedcef5319f5 | 54 | PinName pwm_pin, |
dreschpe | 0:fedcef5319f5 | 55 | PinName reset_pin, |
dreschpe | 0:fedcef5319f5 | 56 | PinName busy_pin, |
dreschpe | 0:fedcef5319f5 | 57 | PinName chip_select_pin, |
dreschpe | 0:fedcef5319f5 | 58 | PinName mosi, |
dreschpe | 0:fedcef5319f5 | 59 | PinName miso, |
dreschpe | 0:fedcef5319f5 | 60 | PinName sck) : |
dreschpe | 0:fedcef5319f5 | 61 | EPD_Pin_PANEL_ON(panel_on_pin), |
dreschpe | 0:fedcef5319f5 | 62 | EPD_Pin_BORDER(border_pin), |
dreschpe | 0:fedcef5319f5 | 63 | EPD_Pin_DISCHARGE(discharge_pin), |
dreschpe | 0:fedcef5319f5 | 64 | EPD_Pin_PWM(pwm_pin), |
dreschpe | 0:fedcef5319f5 | 65 | EPD_Pin_RESET(reset_pin), |
dreschpe | 0:fedcef5319f5 | 66 | EPD_Pin_BUSY(busy_pin), |
dreschpe | 0:fedcef5319f5 | 67 | EPD_Pin_EPD_CS(chip_select_pin), |
dreschpe | 0:fedcef5319f5 | 68 | spi_(mosi,miso,sck) { |
dreschpe | 0:fedcef5319f5 | 69 | |
dreschpe | 0:fedcef5319f5 | 70 | this->size = size; |
dreschpe | 0:fedcef5319f5 | 71 | this->stage_time = 480; // milliseconds |
dreschpe | 0:fedcef5319f5 | 72 | this->lines_per_display = 96; |
dreschpe | 0:fedcef5319f5 | 73 | this->dots_per_line = 128; |
dreschpe | 0:fedcef5319f5 | 74 | this->bytes_per_line = 128 / 8; |
dreschpe | 0:fedcef5319f5 | 75 | this->bytes_per_scan = 96 / 4; |
dreschpe | 0:fedcef5319f5 | 76 | this->filler = false; |
dreschpe | 0:fedcef5319f5 | 77 | spi_.frequency(12000000); // 12 MHz SPI clock |
dreschpe | 0:fedcef5319f5 | 78 | |
dreschpe | 0:fedcef5319f5 | 79 | // display size dependant items |
dreschpe | 0:fedcef5319f5 | 80 | { |
dreschpe | 0:fedcef5319f5 | 81 | static uint8_t cs[] = {0x72, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0f, 0xff, 0x00}; |
dreschpe | 0:fedcef5319f5 | 82 | static uint8_t gs[] = {0x72, 0x03}; |
dreschpe | 0:fedcef5319f5 | 83 | this->channel_select = cs; |
dreschpe | 0:fedcef5319f5 | 84 | this->channel_select_length = sizeof(cs); |
dreschpe | 0:fedcef5319f5 | 85 | this->gate_source = gs; |
dreschpe | 0:fedcef5319f5 | 86 | this->gate_source_length = sizeof(gs); |
dreschpe | 0:fedcef5319f5 | 87 | } |
dreschpe | 0:fedcef5319f5 | 88 | |
dreschpe | 0:fedcef5319f5 | 89 | // set up size structure |
dreschpe | 0:fedcef5319f5 | 90 | switch (size) { |
dreschpe | 0:fedcef5319f5 | 91 | default: |
dreschpe | 0:fedcef5319f5 | 92 | case EPD_1_44: // default so no change |
dreschpe | 0:fedcef5319f5 | 93 | break; |
dreschpe | 0:fedcef5319f5 | 94 | |
dreschpe | 0:fedcef5319f5 | 95 | case EPD_2_0: { |
dreschpe | 0:fedcef5319f5 | 96 | this->lines_per_display = 96; |
dreschpe | 0:fedcef5319f5 | 97 | this->dots_per_line = 200; |
dreschpe | 0:fedcef5319f5 | 98 | this->bytes_per_line = 200 / 8; |
dreschpe | 0:fedcef5319f5 | 99 | this->bytes_per_scan = 96 / 4; |
dreschpe | 0:fedcef5319f5 | 100 | this->filler = true; |
dreschpe | 0:fedcef5319f5 | 101 | static uint8_t cs[] = {0x72, 0x00, 0x00, 0x00, 0x00, 0x01, 0xff, 0xe0, 0x00}; |
dreschpe | 0:fedcef5319f5 | 102 | static uint8_t gs[] = {0x72, 0x03}; |
dreschpe | 0:fedcef5319f5 | 103 | this->channel_select = cs; |
dreschpe | 0:fedcef5319f5 | 104 | this->channel_select_length = sizeof(cs); |
dreschpe | 0:fedcef5319f5 | 105 | this->gate_source = gs; |
dreschpe | 0:fedcef5319f5 | 106 | this->gate_source_length = sizeof(gs); |
dreschpe | 0:fedcef5319f5 | 107 | break; |
dreschpe | 0:fedcef5319f5 | 108 | } |
dreschpe | 0:fedcef5319f5 | 109 | |
dreschpe | 0:fedcef5319f5 | 110 | case EPD_2_7: { |
dreschpe | 0:fedcef5319f5 | 111 | this->stage_time = 630; // milliseconds |
dreschpe | 0:fedcef5319f5 | 112 | this->lines_per_display = 176; |
dreschpe | 0:fedcef5319f5 | 113 | this->dots_per_line = 264; |
dreschpe | 0:fedcef5319f5 | 114 | this->bytes_per_line = 264 / 8; |
dreschpe | 0:fedcef5319f5 | 115 | this->bytes_per_scan = 176 / 4; |
dreschpe | 0:fedcef5319f5 | 116 | this->filler = true; |
dreschpe | 0:fedcef5319f5 | 117 | static uint8_t cs[] = {0x72, 0x00, 0x00, 0x00, 0x7f, 0xff, 0xfe, 0x00, 0x00}; |
dreschpe | 0:fedcef5319f5 | 118 | static uint8_t gs[] = {0x72, 0x00}; |
dreschpe | 0:fedcef5319f5 | 119 | this->channel_select = cs; |
dreschpe | 0:fedcef5319f5 | 120 | this->channel_select_length = sizeof(cs); |
dreschpe | 0:fedcef5319f5 | 121 | this->gate_source = gs; |
dreschpe | 0:fedcef5319f5 | 122 | this->gate_source_length = sizeof(gs); |
dreschpe | 0:fedcef5319f5 | 123 | break; |
dreschpe | 0:fedcef5319f5 | 124 | } |
dreschpe | 0:fedcef5319f5 | 125 | } |
dreschpe | 0:fedcef5319f5 | 126 | |
dreschpe | 0:fedcef5319f5 | 127 | this->factored_stage_time = this->stage_time; |
dreschpe | 0:fedcef5319f5 | 128 | } |
dreschpe | 0:fedcef5319f5 | 129 | |
dreschpe | 0:fedcef5319f5 | 130 | |
dreschpe | 0:fedcef5319f5 | 131 | void EPD_Class::begin() { |
dreschpe | 0:fedcef5319f5 | 132 | |
dreschpe | 0:fedcef5319f5 | 133 | // power up sequence |
dreschpe | 0:fedcef5319f5 | 134 | SPI_put(0x00); |
dreschpe | 0:fedcef5319f5 | 135 | |
dreschpe | 0:fedcef5319f5 | 136 | digitalWrite(this->EPD_Pin_RESET, LOW); |
dreschpe | 0:fedcef5319f5 | 137 | digitalWrite(this->EPD_Pin_PANEL_ON, LOW); |
dreschpe | 0:fedcef5319f5 | 138 | digitalWrite(this->EPD_Pin_DISCHARGE, LOW); |
dreschpe | 0:fedcef5319f5 | 139 | digitalWrite(this->EPD_Pin_BORDER, LOW); |
dreschpe | 0:fedcef5319f5 | 140 | digitalWrite(this->EPD_Pin_EPD_CS, LOW); |
dreschpe | 0:fedcef5319f5 | 141 | |
dreschpe | 0:fedcef5319f5 | 142 | //PWM_start(this->EPD_Pin_PWM); |
dreschpe | 0:fedcef5319f5 | 143 | EPD_Pin_PWM = 0.5; |
dreschpe | 0:fedcef5319f5 | 144 | Delay_ms(5); |
dreschpe | 0:fedcef5319f5 | 145 | digitalWrite(this->EPD_Pin_PANEL_ON, HIGH); |
dreschpe | 0:fedcef5319f5 | 146 | Delay_ms(10); |
dreschpe | 0:fedcef5319f5 | 147 | |
dreschpe | 0:fedcef5319f5 | 148 | digitalWrite(this->EPD_Pin_RESET, HIGH); |
dreschpe | 0:fedcef5319f5 | 149 | digitalWrite(this->EPD_Pin_BORDER, HIGH); |
dreschpe | 0:fedcef5319f5 | 150 | digitalWrite(this->EPD_Pin_EPD_CS, HIGH); |
dreschpe | 0:fedcef5319f5 | 151 | Delay_ms(5); |
dreschpe | 0:fedcef5319f5 | 152 | |
dreschpe | 0:fedcef5319f5 | 153 | digitalWrite(this->EPD_Pin_RESET, LOW); |
dreschpe | 0:fedcef5319f5 | 154 | Delay_ms(5); |
dreschpe | 0:fedcef5319f5 | 155 | |
dreschpe | 0:fedcef5319f5 | 156 | digitalWrite(this->EPD_Pin_RESET, HIGH); |
dreschpe | 0:fedcef5319f5 | 157 | Delay_ms(5); |
dreschpe | 0:fedcef5319f5 | 158 | |
dreschpe | 0:fedcef5319f5 | 159 | // wait for COG to become ready |
dreschpe | 0:fedcef5319f5 | 160 | while (HIGH == digitalRead(this->EPD_Pin_BUSY)) { |
dreschpe | 0:fedcef5319f5 | 161 | } |
dreschpe | 0:fedcef5319f5 | 162 | |
dreschpe | 0:fedcef5319f5 | 163 | // channel select |
dreschpe | 0:fedcef5319f5 | 164 | Delay_us(10); |
dreschpe | 0:fedcef5319f5 | 165 | SPI_send(this->EPD_Pin_EPD_CS, CU8(0x70, 0x01), 2); |
dreschpe | 0:fedcef5319f5 | 166 | Delay_us(10); |
dreschpe | 0:fedcef5319f5 | 167 | SPI_send(this->EPD_Pin_EPD_CS, this->channel_select, this->channel_select_length); |
dreschpe | 0:fedcef5319f5 | 168 | |
dreschpe | 0:fedcef5319f5 | 169 | // DC/DC frequency |
dreschpe | 0:fedcef5319f5 | 170 | Delay_us(10); |
dreschpe | 0:fedcef5319f5 | 171 | SPI_send(this->EPD_Pin_EPD_CS, CU8(0x70, 0x06), 2); |
dreschpe | 0:fedcef5319f5 | 172 | Delay_us(10); |
dreschpe | 0:fedcef5319f5 | 173 | SPI_send(this->EPD_Pin_EPD_CS, CU8(0x72, 0xff), 2); |
dreschpe | 0:fedcef5319f5 | 174 | |
dreschpe | 0:fedcef5319f5 | 175 | // high power mode osc |
dreschpe | 0:fedcef5319f5 | 176 | Delay_us(10); |
dreschpe | 0:fedcef5319f5 | 177 | SPI_send(this->EPD_Pin_EPD_CS, CU8(0x70, 0x07), 2); |
dreschpe | 0:fedcef5319f5 | 178 | Delay_us(10); |
dreschpe | 0:fedcef5319f5 | 179 | SPI_send(this->EPD_Pin_EPD_CS, CU8(0x72, 0x9d), 2); |
dreschpe | 0:fedcef5319f5 | 180 | |
dreschpe | 0:fedcef5319f5 | 181 | |
dreschpe | 0:fedcef5319f5 | 182 | // disable ADC |
dreschpe | 0:fedcef5319f5 | 183 | Delay_us(10); |
dreschpe | 0:fedcef5319f5 | 184 | SPI_send(this->EPD_Pin_EPD_CS, CU8(0x70, 0x08), 2); |
dreschpe | 0:fedcef5319f5 | 185 | Delay_us(10); |
dreschpe | 0:fedcef5319f5 | 186 | SPI_send(this->EPD_Pin_EPD_CS, CU8(0x72, 0x00), 2); |
dreschpe | 0:fedcef5319f5 | 187 | |
dreschpe | 0:fedcef5319f5 | 188 | // Vcom level |
dreschpe | 0:fedcef5319f5 | 189 | Delay_us(10); |
dreschpe | 0:fedcef5319f5 | 190 | SPI_send(this->EPD_Pin_EPD_CS, CU8(0x70, 0x09), 2); |
dreschpe | 0:fedcef5319f5 | 191 | Delay_us(10); |
dreschpe | 0:fedcef5319f5 | 192 | SPI_send(this->EPD_Pin_EPD_CS, CU8(0x72, 0xd0, 0x00), 3); |
dreschpe | 0:fedcef5319f5 | 193 | |
dreschpe | 0:fedcef5319f5 | 194 | // gate and source voltage levels |
dreschpe | 0:fedcef5319f5 | 195 | Delay_us(10); |
dreschpe | 0:fedcef5319f5 | 196 | SPI_send(this->EPD_Pin_EPD_CS, CU8(0x70, 0x04), 2); |
dreschpe | 0:fedcef5319f5 | 197 | Delay_us(10); |
dreschpe | 0:fedcef5319f5 | 198 | SPI_send(this->EPD_Pin_EPD_CS, this->gate_source, this->gate_source_length); |
dreschpe | 0:fedcef5319f5 | 199 | |
dreschpe | 0:fedcef5319f5 | 200 | Delay_ms(5); //??? |
dreschpe | 0:fedcef5319f5 | 201 | |
dreschpe | 0:fedcef5319f5 | 202 | // driver latch on |
dreschpe | 0:fedcef5319f5 | 203 | Delay_us(10); |
dreschpe | 0:fedcef5319f5 | 204 | SPI_send(this->EPD_Pin_EPD_CS, CU8(0x70, 0x03), 2); |
dreschpe | 0:fedcef5319f5 | 205 | Delay_us(10); |
dreschpe | 0:fedcef5319f5 | 206 | SPI_send(this->EPD_Pin_EPD_CS, CU8(0x72, 0x01), 2); |
dreschpe | 0:fedcef5319f5 | 207 | |
dreschpe | 0:fedcef5319f5 | 208 | // driver latch off |
dreschpe | 0:fedcef5319f5 | 209 | Delay_us(10); |
dreschpe | 0:fedcef5319f5 | 210 | SPI_send(this->EPD_Pin_EPD_CS, CU8(0x70, 0x03), 2); |
dreschpe | 0:fedcef5319f5 | 211 | Delay_us(10); |
dreschpe | 0:fedcef5319f5 | 212 | SPI_send(this->EPD_Pin_EPD_CS, CU8(0x72, 0x00), 2); |
dreschpe | 0:fedcef5319f5 | 213 | |
dreschpe | 0:fedcef5319f5 | 214 | Delay_ms(5); |
dreschpe | 0:fedcef5319f5 | 215 | |
dreschpe | 0:fedcef5319f5 | 216 | // charge pump positive voltage on |
dreschpe | 0:fedcef5319f5 | 217 | Delay_us(10); |
dreschpe | 0:fedcef5319f5 | 218 | SPI_send(this->EPD_Pin_EPD_CS, CU8(0x70, 0x05), 2); |
dreschpe | 0:fedcef5319f5 | 219 | Delay_us(10); |
dreschpe | 0:fedcef5319f5 | 220 | SPI_send(this->EPD_Pin_EPD_CS, CU8(0x72, 0x01), 2); |
dreschpe | 0:fedcef5319f5 | 221 | |
dreschpe | 0:fedcef5319f5 | 222 | // final delay before PWM off |
dreschpe | 0:fedcef5319f5 | 223 | Delay_ms(30); |
dreschpe | 0:fedcef5319f5 | 224 | //PWM_stop(this->EPD_Pin_PWM); |
dreschpe | 0:fedcef5319f5 | 225 | EPD_Pin_PWM = 0.0; |
dreschpe | 0:fedcef5319f5 | 226 | |
dreschpe | 0:fedcef5319f5 | 227 | // charge pump negative voltage on |
dreschpe | 0:fedcef5319f5 | 228 | Delay_us(10); |
dreschpe | 0:fedcef5319f5 | 229 | SPI_send(this->EPD_Pin_EPD_CS, CU8(0x70, 0x05), 2); |
dreschpe | 0:fedcef5319f5 | 230 | Delay_us(10); |
dreschpe | 0:fedcef5319f5 | 231 | SPI_send(this->EPD_Pin_EPD_CS, CU8(0x72, 0x03), 2); |
dreschpe | 0:fedcef5319f5 | 232 | |
dreschpe | 0:fedcef5319f5 | 233 | Delay_ms(30); |
dreschpe | 0:fedcef5319f5 | 234 | |
dreschpe | 0:fedcef5319f5 | 235 | // Vcom driver on |
dreschpe | 0:fedcef5319f5 | 236 | Delay_us(10); |
dreschpe | 0:fedcef5319f5 | 237 | SPI_send(this->EPD_Pin_EPD_CS, CU8(0x70, 0x05), 2); |
dreschpe | 0:fedcef5319f5 | 238 | Delay_us(10); |
dreschpe | 0:fedcef5319f5 | 239 | SPI_send(this->EPD_Pin_EPD_CS, CU8(0x72, 0x0f), 2); |
dreschpe | 0:fedcef5319f5 | 240 | |
dreschpe | 0:fedcef5319f5 | 241 | Delay_ms(30); |
dreschpe | 0:fedcef5319f5 | 242 | |
dreschpe | 0:fedcef5319f5 | 243 | // output enable to disable |
dreschpe | 0:fedcef5319f5 | 244 | Delay_us(10); |
dreschpe | 0:fedcef5319f5 | 245 | SPI_send(this->EPD_Pin_EPD_CS, CU8(0x70, 0x02), 2); |
dreschpe | 0:fedcef5319f5 | 246 | Delay_us(10); |
dreschpe | 0:fedcef5319f5 | 247 | SPI_send(this->EPD_Pin_EPD_CS, CU8(0x72, 0x24), 2); |
dreschpe | 0:fedcef5319f5 | 248 | } |
dreschpe | 0:fedcef5319f5 | 249 | |
dreschpe | 0:fedcef5319f5 | 250 | |
dreschpe | 0:fedcef5319f5 | 251 | void EPD_Class::end() { |
dreschpe | 0:fedcef5319f5 | 252 | |
dreschpe | 0:fedcef5319f5 | 253 | this->frame_fixed(0x55, EPD_normal); // dummy frame |
dreschpe | 0:fedcef5319f5 | 254 | this->line(0x7fffu, 0, 0x55, false, EPD_normal); // dummy_line |
dreschpe | 0:fedcef5319f5 | 255 | |
dreschpe | 0:fedcef5319f5 | 256 | Delay_ms(25); |
dreschpe | 0:fedcef5319f5 | 257 | |
dreschpe | 0:fedcef5319f5 | 258 | digitalWrite(this->EPD_Pin_BORDER, LOW); |
dreschpe | 0:fedcef5319f5 | 259 | Delay_ms(30); |
dreschpe | 0:fedcef5319f5 | 260 | |
dreschpe | 0:fedcef5319f5 | 261 | digitalWrite(this->EPD_Pin_BORDER, HIGH); |
dreschpe | 0:fedcef5319f5 | 262 | |
dreschpe | 0:fedcef5319f5 | 263 | // latch reset turn on |
dreschpe | 0:fedcef5319f5 | 264 | Delay_us(10); |
dreschpe | 0:fedcef5319f5 | 265 | SPI_send(this->EPD_Pin_EPD_CS, CU8(0x70, 0x03), 2); |
dreschpe | 0:fedcef5319f5 | 266 | Delay_us(10); |
dreschpe | 0:fedcef5319f5 | 267 | SPI_send(this->EPD_Pin_EPD_CS, CU8(0x72, 0x01), 2); |
dreschpe | 0:fedcef5319f5 | 268 | |
dreschpe | 0:fedcef5319f5 | 269 | // output enable off |
dreschpe | 0:fedcef5319f5 | 270 | Delay_us(10); |
dreschpe | 0:fedcef5319f5 | 271 | SPI_send(this->EPD_Pin_EPD_CS, CU8(0x70, 0x02), 2); |
dreschpe | 0:fedcef5319f5 | 272 | Delay_us(10); |
dreschpe | 0:fedcef5319f5 | 273 | SPI_send(this->EPD_Pin_EPD_CS, CU8(0x72, 0x05), 2); |
dreschpe | 0:fedcef5319f5 | 274 | |
dreschpe | 0:fedcef5319f5 | 275 | // Vcom power off |
dreschpe | 0:fedcef5319f5 | 276 | Delay_us(10); |
dreschpe | 0:fedcef5319f5 | 277 | SPI_send(this->EPD_Pin_EPD_CS, CU8(0x70, 0x05), 2); |
dreschpe | 0:fedcef5319f5 | 278 | Delay_us(10); |
dreschpe | 0:fedcef5319f5 | 279 | SPI_send(this->EPD_Pin_EPD_CS, CU8(0x72, 0x0e), 2); |
dreschpe | 0:fedcef5319f5 | 280 | |
dreschpe | 0:fedcef5319f5 | 281 | // power off negative charge pump |
dreschpe | 0:fedcef5319f5 | 282 | Delay_us(10); |
dreschpe | 0:fedcef5319f5 | 283 | SPI_send(this->EPD_Pin_EPD_CS, CU8(0x70, 0x05), 2); |
dreschpe | 0:fedcef5319f5 | 284 | Delay_us(10); |
dreschpe | 0:fedcef5319f5 | 285 | SPI_send(this->EPD_Pin_EPD_CS, CU8(0x72, 0x02), 2); |
dreschpe | 0:fedcef5319f5 | 286 | |
dreschpe | 0:fedcef5319f5 | 287 | // discharge |
dreschpe | 0:fedcef5319f5 | 288 | Delay_us(10); |
dreschpe | 0:fedcef5319f5 | 289 | SPI_send(this->EPD_Pin_EPD_CS, CU8(0x70, 0x04), 2); |
dreschpe | 0:fedcef5319f5 | 290 | Delay_us(10); |
dreschpe | 0:fedcef5319f5 | 291 | SPI_send(this->EPD_Pin_EPD_CS, CU8(0x72, 0x0c), 2); |
dreschpe | 0:fedcef5319f5 | 292 | |
dreschpe | 0:fedcef5319f5 | 293 | Delay_ms(120); |
dreschpe | 0:fedcef5319f5 | 294 | |
dreschpe | 0:fedcef5319f5 | 295 | // all charge pumps off |
dreschpe | 0:fedcef5319f5 | 296 | Delay_us(10); |
dreschpe | 0:fedcef5319f5 | 297 | SPI_send(this->EPD_Pin_EPD_CS, CU8(0x70, 0x05), 2); |
dreschpe | 0:fedcef5319f5 | 298 | Delay_us(10); |
dreschpe | 0:fedcef5319f5 | 299 | SPI_send(this->EPD_Pin_EPD_CS, CU8(0x72, 0x00), 2); |
dreschpe | 0:fedcef5319f5 | 300 | |
dreschpe | 0:fedcef5319f5 | 301 | // turn of osc |
dreschpe | 0:fedcef5319f5 | 302 | Delay_us(10); |
dreschpe | 0:fedcef5319f5 | 303 | SPI_send(this->EPD_Pin_EPD_CS, CU8(0x70, 0x07), 2); |
dreschpe | 0:fedcef5319f5 | 304 | Delay_us(10); |
dreschpe | 0:fedcef5319f5 | 305 | SPI_send(this->EPD_Pin_EPD_CS, CU8(0x72, 0x0d), 2); |
dreschpe | 0:fedcef5319f5 | 306 | |
dreschpe | 0:fedcef5319f5 | 307 | // discharge internal - 1 |
dreschpe | 0:fedcef5319f5 | 308 | Delay_us(10); |
dreschpe | 0:fedcef5319f5 | 309 | SPI_send(this->EPD_Pin_EPD_CS, CU8(0x70, 0x04), 2); |
dreschpe | 0:fedcef5319f5 | 310 | Delay_us(10); |
dreschpe | 0:fedcef5319f5 | 311 | SPI_send(this->EPD_Pin_EPD_CS, CU8(0x72, 0x50), 2); |
dreschpe | 0:fedcef5319f5 | 312 | |
dreschpe | 0:fedcef5319f5 | 313 | Delay_ms(40); |
dreschpe | 0:fedcef5319f5 | 314 | |
dreschpe | 0:fedcef5319f5 | 315 | // discharge internal - 2 |
dreschpe | 0:fedcef5319f5 | 316 | Delay_us(10); |
dreschpe | 0:fedcef5319f5 | 317 | SPI_send(this->EPD_Pin_EPD_CS, CU8(0x70, 0x04), 2); |
dreschpe | 0:fedcef5319f5 | 318 | Delay_us(10); |
dreschpe | 0:fedcef5319f5 | 319 | SPI_send(this->EPD_Pin_EPD_CS, CU8(0x72, 0xA0), 2); |
dreschpe | 0:fedcef5319f5 | 320 | |
dreschpe | 0:fedcef5319f5 | 321 | Delay_ms(40); |
dreschpe | 0:fedcef5319f5 | 322 | |
dreschpe | 0:fedcef5319f5 | 323 | // discharge internal - 3 |
dreschpe | 0:fedcef5319f5 | 324 | Delay_us(10); |
dreschpe | 0:fedcef5319f5 | 325 | SPI_send(this->EPD_Pin_EPD_CS, CU8(0x70, 0x04), 2); |
dreschpe | 0:fedcef5319f5 | 326 | Delay_us(10); |
dreschpe | 0:fedcef5319f5 | 327 | SPI_send(this->EPD_Pin_EPD_CS, CU8(0x72, 0x00), 2); |
dreschpe | 0:fedcef5319f5 | 328 | |
dreschpe | 0:fedcef5319f5 | 329 | // turn of power and all signals |
dreschpe | 0:fedcef5319f5 | 330 | digitalWrite(this->EPD_Pin_RESET, LOW); |
dreschpe | 0:fedcef5319f5 | 331 | digitalWrite(this->EPD_Pin_PANEL_ON, LOW); |
dreschpe | 0:fedcef5319f5 | 332 | digitalWrite(this->EPD_Pin_BORDER, LOW); |
dreschpe | 0:fedcef5319f5 | 333 | digitalWrite(this->EPD_Pin_EPD_CS, LOW); |
dreschpe | 0:fedcef5319f5 | 334 | |
dreschpe | 0:fedcef5319f5 | 335 | digitalWrite(this->EPD_Pin_DISCHARGE, HIGH); |
dreschpe | 0:fedcef5319f5 | 336 | |
dreschpe | 0:fedcef5319f5 | 337 | SPI_put(0x00); |
dreschpe | 0:fedcef5319f5 | 338 | |
dreschpe | 0:fedcef5319f5 | 339 | Delay_ms(150); |
dreschpe | 0:fedcef5319f5 | 340 | |
dreschpe | 0:fedcef5319f5 | 341 | digitalWrite(this->EPD_Pin_DISCHARGE, LOW); |
dreschpe | 0:fedcef5319f5 | 342 | } |
dreschpe | 0:fedcef5319f5 | 343 | |
dreschpe | 0:fedcef5319f5 | 344 | |
dreschpe | 0:fedcef5319f5 | 345 | // convert a temperature in Celcius to |
dreschpe | 0:fedcef5319f5 | 346 | // the scale factor for frame_*_repeat methods |
dreschpe | 0:fedcef5319f5 | 347 | int EPD_Class::temperature_to_factor_10x(int temperature) { |
dreschpe | 0:fedcef5319f5 | 348 | if (temperature <= -10) { |
dreschpe | 0:fedcef5319f5 | 349 | return 170; |
dreschpe | 0:fedcef5319f5 | 350 | } else if (temperature <= -5) { |
dreschpe | 0:fedcef5319f5 | 351 | return 120; |
dreschpe | 0:fedcef5319f5 | 352 | } else if (temperature <= 5) { |
dreschpe | 0:fedcef5319f5 | 353 | return 80; |
dreschpe | 0:fedcef5319f5 | 354 | } else if (temperature <= 10) { |
dreschpe | 0:fedcef5319f5 | 355 | return 40; |
dreschpe | 0:fedcef5319f5 | 356 | } else if (temperature <= 15) { |
dreschpe | 0:fedcef5319f5 | 357 | return 30; |
dreschpe | 0:fedcef5319f5 | 358 | } else if (temperature <= 20) { |
dreschpe | 0:fedcef5319f5 | 359 | return 20; |
dreschpe | 0:fedcef5319f5 | 360 | } else if (temperature <= 40) { |
dreschpe | 0:fedcef5319f5 | 361 | return 10; |
dreschpe | 0:fedcef5319f5 | 362 | } |
dreschpe | 0:fedcef5319f5 | 363 | return 7; |
dreschpe | 0:fedcef5319f5 | 364 | } |
dreschpe | 0:fedcef5319f5 | 365 | |
dreschpe | 0:fedcef5319f5 | 366 | |
dreschpe | 0:fedcef5319f5 | 367 | // One frame of data is the number of lines * rows. For example: |
dreschpe | 0:fedcef5319f5 | 368 | // The 1.44” frame of data is 96 lines * 128 dots. |
dreschpe | 0:fedcef5319f5 | 369 | // The 2” frame of data is 96 lines * 200 dots. |
dreschpe | 0:fedcef5319f5 | 370 | // The 2.7” frame of data is 176 lines * 264 dots. |
dreschpe | 0:fedcef5319f5 | 371 | |
dreschpe | 0:fedcef5319f5 | 372 | // the image is arranged by line which matches the display size |
dreschpe | 0:fedcef5319f5 | 373 | // so smallest would have 96 * 32 bytes |
dreschpe | 0:fedcef5319f5 | 374 | |
dreschpe | 0:fedcef5319f5 | 375 | void EPD_Class::frame_fixed(uint8_t fixed_value, EPD_stage stage) { |
dreschpe | 0:fedcef5319f5 | 376 | for (uint8_t line = 0; line < this->lines_per_display ; ++line) { |
dreschpe | 0:fedcef5319f5 | 377 | this->line(line, 0, fixed_value, false, stage); |
dreschpe | 0:fedcef5319f5 | 378 | } |
dreschpe | 0:fedcef5319f5 | 379 | } |
dreschpe | 0:fedcef5319f5 | 380 | |
dreschpe | 0:fedcef5319f5 | 381 | |
dreschpe | 0:fedcef5319f5 | 382 | void EPD_Class::frame_data(PROGMEM const uint8_t *image, EPD_stage stage){ |
dreschpe | 0:fedcef5319f5 | 383 | for (uint8_t line = 0; line < this->lines_per_display ; ++line) { |
dreschpe | 0:fedcef5319f5 | 384 | this->line(line, &image[line * this->bytes_per_line], 0, true, stage); |
dreschpe | 0:fedcef5319f5 | 385 | } |
dreschpe | 0:fedcef5319f5 | 386 | } |
dreschpe | 0:fedcef5319f5 | 387 | |
dreschpe | 0:fedcef5319f5 | 388 | |
dreschpe | 0:fedcef5319f5 | 389 | #if defined(EPD_ENABLE_EXTRA_SRAM) |
dreschpe | 0:fedcef5319f5 | 390 | void EPD_Class::frame_sram(const uint8_t *image, EPD_stage stage){ |
dreschpe | 0:fedcef5319f5 | 391 | for (uint8_t line = 0; line < this->lines_per_display ; ++line) { |
dreschpe | 0:fedcef5319f5 | 392 | this->line(line, &image[line * this->bytes_per_line], 0, false, stage); |
dreschpe | 0:fedcef5319f5 | 393 | } |
dreschpe | 0:fedcef5319f5 | 394 | } |
dreschpe | 0:fedcef5319f5 | 395 | #endif |
dreschpe | 0:fedcef5319f5 | 396 | |
dreschpe | 0:fedcef5319f5 | 397 | |
dreschpe | 0:fedcef5319f5 | 398 | void EPD_Class::frame_cb(uint32_t address, EPD_reader *reader, EPD_stage stage) { |
dreschpe | 0:fedcef5319f5 | 399 | static uint8_t buffer[264 / 8]; |
dreschpe | 0:fedcef5319f5 | 400 | for (uint8_t line = 0; line < this->lines_per_display; ++line) { |
dreschpe | 0:fedcef5319f5 | 401 | reader(buffer, address + line * this->bytes_per_line, this->bytes_per_line); |
dreschpe | 0:fedcef5319f5 | 402 | this->line(line, buffer, 0, false, stage); |
dreschpe | 0:fedcef5319f5 | 403 | } |
dreschpe | 0:fedcef5319f5 | 404 | } |
dreschpe | 0:fedcef5319f5 | 405 | |
dreschpe | 0:fedcef5319f5 | 406 | void EPD_Class::frame_fixed_repeat(uint8_t fixed_value, EPD_stage stage) { |
dreschpe | 0:fedcef5319f5 | 407 | long stage_time = this->factored_stage_time; |
dreschpe | 0:fedcef5319f5 | 408 | |
dreschpe | 0:fedcef5319f5 | 409 | do { |
dreschpe | 0:fedcef5319f5 | 410 | millis_start(); |
dreschpe | 0:fedcef5319f5 | 411 | unsigned long t_start = millis(); |
dreschpe | 0:fedcef5319f5 | 412 | this->frame_fixed(fixed_value, stage); |
dreschpe | 0:fedcef5319f5 | 413 | unsigned long t_end = millis(); |
dreschpe | 0:fedcef5319f5 | 414 | if (t_end > t_start) { |
dreschpe | 0:fedcef5319f5 | 415 | stage_time -= t_end - t_start; |
dreschpe | 0:fedcef5319f5 | 416 | } else { |
dreschpe | 0:fedcef5319f5 | 417 | stage_time -= t_start - t_end + 1 + ULONG_MAX; |
dreschpe | 0:fedcef5319f5 | 418 | } |
dreschpe | 0:fedcef5319f5 | 419 | } while (stage_time > 0); |
dreschpe | 0:fedcef5319f5 | 420 | } |
dreschpe | 0:fedcef5319f5 | 421 | |
dreschpe | 0:fedcef5319f5 | 422 | |
dreschpe | 0:fedcef5319f5 | 423 | void EPD_Class::frame_data_repeat(PROGMEM const uint8_t *image, EPD_stage stage) { |
dreschpe | 0:fedcef5319f5 | 424 | long stage_time = this->factored_stage_time; |
dreschpe | 0:fedcef5319f5 | 425 | do { |
dreschpe | 0:fedcef5319f5 | 426 | millis_start(); |
dreschpe | 0:fedcef5319f5 | 427 | unsigned long t_start = millis(); |
dreschpe | 0:fedcef5319f5 | 428 | this->frame_data(image, stage); |
dreschpe | 0:fedcef5319f5 | 429 | unsigned long t_end = millis(); |
dreschpe | 0:fedcef5319f5 | 430 | if (t_end > t_start) { |
dreschpe | 0:fedcef5319f5 | 431 | stage_time -= t_end - t_start; |
dreschpe | 0:fedcef5319f5 | 432 | } else { |
dreschpe | 0:fedcef5319f5 | 433 | stage_time -= t_start - t_end + 1 + ULONG_MAX; |
dreschpe | 0:fedcef5319f5 | 434 | } |
dreschpe | 0:fedcef5319f5 | 435 | } while (stage_time > 0); |
dreschpe | 0:fedcef5319f5 | 436 | } |
dreschpe | 0:fedcef5319f5 | 437 | |
dreschpe | 0:fedcef5319f5 | 438 | |
dreschpe | 0:fedcef5319f5 | 439 | #if defined(EPD_ENABLE_EXTRA_SRAM) |
dreschpe | 0:fedcef5319f5 | 440 | void EPD_Class::frame_sram_repeat(const uint8_t *image, EPD_stage stage) { |
dreschpe | 0:fedcef5319f5 | 441 | long stage_time = this->factored_stage_time; |
dreschpe | 0:fedcef5319f5 | 442 | do { |
dreschpe | 0:fedcef5319f5 | 443 | millis_start(); |
dreschpe | 0:fedcef5319f5 | 444 | unsigned long t_start = millis(); |
dreschpe | 0:fedcef5319f5 | 445 | this->frame_sram(image, stage); |
dreschpe | 0:fedcef5319f5 | 446 | unsigned long t_end = millis(); |
dreschpe | 0:fedcef5319f5 | 447 | if (t_end > t_start) { |
dreschpe | 0:fedcef5319f5 | 448 | stage_time -= t_end - t_start; |
dreschpe | 0:fedcef5319f5 | 449 | } else { |
dreschpe | 0:fedcef5319f5 | 450 | stage_time -= t_start - t_end + 1 + ULONG_MAX; |
dreschpe | 0:fedcef5319f5 | 451 | } |
dreschpe | 0:fedcef5319f5 | 452 | } while (stage_time > 0); |
dreschpe | 0:fedcef5319f5 | 453 | } |
dreschpe | 0:fedcef5319f5 | 454 | #endif |
dreschpe | 0:fedcef5319f5 | 455 | |
dreschpe | 0:fedcef5319f5 | 456 | |
dreschpe | 0:fedcef5319f5 | 457 | void EPD_Class::frame_cb_repeat(uint32_t address, EPD_reader *reader, EPD_stage stage) { |
dreschpe | 0:fedcef5319f5 | 458 | long stage_time = this->factored_stage_time; |
dreschpe | 0:fedcef5319f5 | 459 | do { |
dreschpe | 0:fedcef5319f5 | 460 | millis_start(); |
dreschpe | 0:fedcef5319f5 | 461 | unsigned long t_start = millis(); |
dreschpe | 0:fedcef5319f5 | 462 | this->frame_cb(address, reader, stage); |
dreschpe | 0:fedcef5319f5 | 463 | unsigned long t_end = millis(); |
dreschpe | 0:fedcef5319f5 | 464 | if (t_end > t_start) { |
dreschpe | 0:fedcef5319f5 | 465 | stage_time -= t_end - t_start; |
dreschpe | 0:fedcef5319f5 | 466 | } else { |
dreschpe | 0:fedcef5319f5 | 467 | stage_time -= t_start - t_end + 1 + ULONG_MAX; |
dreschpe | 0:fedcef5319f5 | 468 | } |
dreschpe | 0:fedcef5319f5 | 469 | } while (stage_time > 0); |
dreschpe | 0:fedcef5319f5 | 470 | } |
dreschpe | 0:fedcef5319f5 | 471 | |
dreschpe | 0:fedcef5319f5 | 472 | |
dreschpe | 0:fedcef5319f5 | 473 | void EPD_Class::line(uint16_t line, const uint8_t *data, uint8_t fixed_value, bool read_progmem, EPD_stage stage) { |
dreschpe | 0:fedcef5319f5 | 474 | // charge pump voltage levels |
dreschpe | 0:fedcef5319f5 | 475 | |
dreschpe | 0:fedcef5319f5 | 476 | Delay_us(10); |
dreschpe | 0:fedcef5319f5 | 477 | SPI_send(this->EPD_Pin_EPD_CS, CU8(0x70, 0x04), 2); |
dreschpe | 0:fedcef5319f5 | 478 | Delay_us(10); |
dreschpe | 0:fedcef5319f5 | 479 | SPI_send(this->EPD_Pin_EPD_CS, this->gate_source, this->gate_source_length); |
dreschpe | 0:fedcef5319f5 | 480 | |
dreschpe | 0:fedcef5319f5 | 481 | // send data |
dreschpe | 0:fedcef5319f5 | 482 | Delay_us(10); |
dreschpe | 0:fedcef5319f5 | 483 | SPI_send(this->EPD_Pin_EPD_CS, CU8(0x70, 0x0a), 2); |
dreschpe | 0:fedcef5319f5 | 484 | Delay_us(10); |
dreschpe | 0:fedcef5319f5 | 485 | |
dreschpe | 0:fedcef5319f5 | 486 | // CS low |
dreschpe | 0:fedcef5319f5 | 487 | digitalWrite(this->EPD_Pin_EPD_CS, LOW); |
dreschpe | 0:fedcef5319f5 | 488 | SPI_put_wait(0x72, this->EPD_Pin_BUSY); |
dreschpe | 0:fedcef5319f5 | 489 | |
dreschpe | 0:fedcef5319f5 | 490 | // even pixels |
dreschpe | 0:fedcef5319f5 | 491 | for (uint16_t b = this->bytes_per_line; b > 0; --b) { |
dreschpe | 0:fedcef5319f5 | 492 | if (0 != data) { |
dreschpe | 0:fedcef5319f5 | 493 | |
dreschpe | 0:fedcef5319f5 | 494 | uint8_t pixels = data[b - 1] & 0xaa; |
dreschpe | 0:fedcef5319f5 | 495 | |
dreschpe | 0:fedcef5319f5 | 496 | switch(stage) { |
dreschpe | 0:fedcef5319f5 | 497 | case EPD_compensate: // B -> W, W -> B (Current Image) |
dreschpe | 0:fedcef5319f5 | 498 | pixels = 0xaa | ((pixels ^ 0xaa) >> 1); |
dreschpe | 0:fedcef5319f5 | 499 | break; |
dreschpe | 0:fedcef5319f5 | 500 | case EPD_white: // B -> N, W -> W (Current Image) |
dreschpe | 0:fedcef5319f5 | 501 | pixels = 0x55 + ((pixels ^ 0xaa) >> 1); |
dreschpe | 0:fedcef5319f5 | 502 | break; |
dreschpe | 0:fedcef5319f5 | 503 | case EPD_inverse: // B -> N, W -> B (New Image) |
dreschpe | 0:fedcef5319f5 | 504 | pixels = 0x55 | (pixels ^ 0xaa); |
dreschpe | 0:fedcef5319f5 | 505 | break; |
dreschpe | 0:fedcef5319f5 | 506 | case EPD_normal: // B -> B, W -> W (New Image) |
dreschpe | 0:fedcef5319f5 | 507 | pixels = 0xaa | (pixels >> 1); |
dreschpe | 0:fedcef5319f5 | 508 | break; |
dreschpe | 0:fedcef5319f5 | 509 | } |
dreschpe | 0:fedcef5319f5 | 510 | SPI_put_wait(pixels, this->EPD_Pin_BUSY); |
dreschpe | 0:fedcef5319f5 | 511 | } else { |
dreschpe | 0:fedcef5319f5 | 512 | SPI_put_wait(fixed_value, this->EPD_Pin_BUSY); |
dreschpe | 0:fedcef5319f5 | 513 | } } |
dreschpe | 0:fedcef5319f5 | 514 | |
dreschpe | 0:fedcef5319f5 | 515 | // scan line |
dreschpe | 0:fedcef5319f5 | 516 | for (uint16_t b = 0; b < this->bytes_per_scan; ++b) { |
dreschpe | 0:fedcef5319f5 | 517 | if (line / 4 == b) { |
dreschpe | 0:fedcef5319f5 | 518 | SPI_put_wait(0xc0 >> (2 * (line & 0x03)), this->EPD_Pin_BUSY); |
dreschpe | 0:fedcef5319f5 | 519 | } else { |
dreschpe | 0:fedcef5319f5 | 520 | SPI_put_wait(0x00, this->EPD_Pin_BUSY); |
dreschpe | 0:fedcef5319f5 | 521 | } |
dreschpe | 0:fedcef5319f5 | 522 | } |
dreschpe | 0:fedcef5319f5 | 523 | |
dreschpe | 0:fedcef5319f5 | 524 | // odd pixels |
dreschpe | 0:fedcef5319f5 | 525 | for (uint16_t b = 0; b < this->bytes_per_line; ++b) { |
dreschpe | 0:fedcef5319f5 | 526 | if (0 != data) { |
dreschpe | 0:fedcef5319f5 | 527 | |
dreschpe | 0:fedcef5319f5 | 528 | uint8_t pixels = data[b] & 0x55; |
dreschpe | 0:fedcef5319f5 | 529 | |
dreschpe | 0:fedcef5319f5 | 530 | switch(stage) { |
dreschpe | 0:fedcef5319f5 | 531 | case EPD_compensate: // B -> W, W -> B (Current Image) |
dreschpe | 0:fedcef5319f5 | 532 | pixels = 0xaa | (pixels ^ 0x55); |
dreschpe | 0:fedcef5319f5 | 533 | break; |
dreschpe | 0:fedcef5319f5 | 534 | case EPD_white: // B -> N, W -> W (Current Image) |
dreschpe | 0:fedcef5319f5 | 535 | pixels = 0x55 + (pixels ^ 0x55); |
dreschpe | 0:fedcef5319f5 | 536 | break; |
dreschpe | 0:fedcef5319f5 | 537 | case EPD_inverse: // B -> N, W -> B (New Image) |
dreschpe | 0:fedcef5319f5 | 538 | pixels = 0x55 | ((pixels ^ 0x55) << 1); |
dreschpe | 0:fedcef5319f5 | 539 | break; |
dreschpe | 0:fedcef5319f5 | 540 | case EPD_normal: // B -> B, W -> W (New Image) |
dreschpe | 0:fedcef5319f5 | 541 | pixels = 0xaa | pixels; |
dreschpe | 0:fedcef5319f5 | 542 | break; |
dreschpe | 0:fedcef5319f5 | 543 | } |
dreschpe | 0:fedcef5319f5 | 544 | uint8_t p1 = (pixels >> 6) & 0x03; |
dreschpe | 0:fedcef5319f5 | 545 | uint8_t p2 = (pixels >> 4) & 0x03; |
dreschpe | 0:fedcef5319f5 | 546 | uint8_t p3 = (pixels >> 2) & 0x03; |
dreschpe | 0:fedcef5319f5 | 547 | uint8_t p4 = (pixels >> 0) & 0x03; |
dreschpe | 0:fedcef5319f5 | 548 | pixels = (p1 << 0) | (p2 << 2) | (p3 << 4) | (p4 << 6); |
dreschpe | 0:fedcef5319f5 | 549 | SPI_put_wait(pixels, this->EPD_Pin_BUSY); |
dreschpe | 0:fedcef5319f5 | 550 | } else { |
dreschpe | 0:fedcef5319f5 | 551 | SPI_put_wait(fixed_value, this->EPD_Pin_BUSY); |
dreschpe | 0:fedcef5319f5 | 552 | } |
dreschpe | 0:fedcef5319f5 | 553 | } |
dreschpe | 0:fedcef5319f5 | 554 | |
dreschpe | 0:fedcef5319f5 | 555 | if (this->filler) { |
dreschpe | 0:fedcef5319f5 | 556 | SPI_put_wait(0x00, this->EPD_Pin_BUSY); |
dreschpe | 0:fedcef5319f5 | 557 | } |
dreschpe | 0:fedcef5319f5 | 558 | |
dreschpe | 0:fedcef5319f5 | 559 | // CS high |
dreschpe | 0:fedcef5319f5 | 560 | digitalWrite(this->EPD_Pin_EPD_CS, HIGH); |
dreschpe | 0:fedcef5319f5 | 561 | |
dreschpe | 0:fedcef5319f5 | 562 | // output data to panel |
dreschpe | 0:fedcef5319f5 | 563 | Delay_us(10); |
dreschpe | 0:fedcef5319f5 | 564 | SPI_send(this->EPD_Pin_EPD_CS, CU8(0x70, 0x02), 2); |
dreschpe | 0:fedcef5319f5 | 565 | Delay_us(10); |
dreschpe | 0:fedcef5319f5 | 566 | SPI_send(this->EPD_Pin_EPD_CS, CU8(0x72, 0x2f), 2); |
dreschpe | 0:fedcef5319f5 | 567 | } |
dreschpe | 0:fedcef5319f5 | 568 | |
dreschpe | 0:fedcef5319f5 | 569 | |
dreschpe | 0:fedcef5319f5 | 570 | void EPD_Class::SPI_put(uint8_t c) { |
dreschpe | 0:fedcef5319f5 | 571 | |
dreschpe | 0:fedcef5319f5 | 572 | spi_.write(c); |
dreschpe | 0:fedcef5319f5 | 573 | //spi_.fastWrite(c); |
dreschpe | 0:fedcef5319f5 | 574 | |
dreschpe | 0:fedcef5319f5 | 575 | |
dreschpe | 0:fedcef5319f5 | 576 | } |
dreschpe | 0:fedcef5319f5 | 577 | |
dreschpe | 0:fedcef5319f5 | 578 | |
dreschpe | 0:fedcef5319f5 | 579 | |
dreschpe | 0:fedcef5319f5 | 580 | void EPD_Class::SPI_put_wait(uint8_t c, DigitalIn busy_pin) { |
dreschpe | 0:fedcef5319f5 | 581 | |
dreschpe | 0:fedcef5319f5 | 582 | SPI_put(c); |
dreschpe | 0:fedcef5319f5 | 583 | |
dreschpe | 0:fedcef5319f5 | 584 | // wait for COG ready |
dreschpe | 0:fedcef5319f5 | 585 | while (HIGH == digitalRead(busy_pin)) { |
dreschpe | 0:fedcef5319f5 | 586 | } |
dreschpe | 0:fedcef5319f5 | 587 | } |
dreschpe | 0:fedcef5319f5 | 588 | |
dreschpe | 0:fedcef5319f5 | 589 | |
dreschpe | 0:fedcef5319f5 | 590 | void EPD_Class::SPI_send(DigitalOut cs_pin, const uint8_t *buffer, uint16_t length) { |
dreschpe | 0:fedcef5319f5 | 591 | |
dreschpe | 0:fedcef5319f5 | 592 | // CS low |
dreschpe | 0:fedcef5319f5 | 593 | digitalWrite(cs_pin, LOW); |
dreschpe | 0:fedcef5319f5 | 594 | |
dreschpe | 0:fedcef5319f5 | 595 | // send all data |
dreschpe | 0:fedcef5319f5 | 596 | for (uint16_t i = 0; i < length; ++i) { |
dreschpe | 0:fedcef5319f5 | 597 | spi_.fastWrite(*buffer++); |
dreschpe | 0:fedcef5319f5 | 598 | spi_.clearRX(); |
dreschpe | 0:fedcef5319f5 | 599 | } |
dreschpe | 0:fedcef5319f5 | 600 | |
dreschpe | 0:fedcef5319f5 | 601 | // CS high |
dreschpe | 0:fedcef5319f5 | 602 | digitalWrite(cs_pin, HIGH); |
dreschpe | 0:fedcef5319f5 | 603 | } |
dreschpe | 0:fedcef5319f5 | 604 | |
dreschpe | 0:fedcef5319f5 | 605 | |
dreschpe | 0:fedcef5319f5 | 606 | //static void PWM_start(int pin) { |
dreschpe | 0:fedcef5319f5 | 607 | // analogWrite(pin, 128); // 50% duty cycle |
dreschpe | 0:fedcef5319f5 | 608 | //} |
dreschpe | 0:fedcef5319f5 | 609 | |
dreschpe | 0:fedcef5319f5 | 610 | |
dreschpe | 0:fedcef5319f5 | 611 | //static void PWM_stop(int pin) { |
dreschpe | 0:fedcef5319f5 | 612 | // analogWrite(pin, 0); |
dreschpe | 0:fedcef5319f5 | 613 | //} |