Thierry CRESSON / seeedstudio-epaperV20

Come from standard seeed epaper, but adding SPI signal in construtor

Fork of seeedstudio-epaper by Nordic Pucks

EPD.h@0:6ac5ba1343bf, 2014-07-17 (annotated)

Committer:
sigveseb
Date:
Thu Jul 17 14:15:53 2014 +0000
Revision:
0:6ac5ba1343bf
Child:
1:2f62e2b80305
-

Who changed what in which revision?

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sigveseb 0:6ac5ba1343bf 1 // Copyright 2013 Pervasive Displays, Inc.
sigveseb 0:6ac5ba1343bf 2 //
sigveseb 0:6ac5ba1343bf 3 // Licensed under the Apache License, Version 2.0 (the "License");
sigveseb 0:6ac5ba1343bf 4 // you may not use this file except in compliance with the License.
sigveseb 0:6ac5ba1343bf 5 // You may obtain a copy of the License at:
sigveseb 0:6ac5ba1343bf 6 //
sigveseb 0:6ac5ba1343bf 7 // http://www.apache.org/licenses/LICENSE-2.0
sigveseb 0:6ac5ba1343bf 8 //
sigveseb 0:6ac5ba1343bf 9 // Unless required by applicable law or agreed to in writing,
sigveseb 0:6ac5ba1343bf 10 // software distributed under the License is distributed on an
sigveseb 0:6ac5ba1343bf 11 // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
sigveseb 0:6ac5ba1343bf 12 // express or implied. See the License for the specific language
sigveseb 0:6ac5ba1343bf 13 // governing permissions and limitations under the License.
sigveseb 0:6ac5ba1343bf 14
sigveseb 0:6ac5ba1343bf 15 #if !defined(EPD_H)
sigveseb 0:6ac5ba1343bf 16 #define EPD_H 1
sigveseb 0:6ac5ba1343bf 17
sigveseb 0:6ac5ba1343bf 18 #include <SPI.h>
sigveseb 0:6ac5ba1343bf 19 #include <mbed.h>
sigveseb 0:6ac5ba1343bf 20
sigveseb 0:6ac5ba1343bf 21
sigveseb 0:6ac5ba1343bf 22 // if more SRAM available (8 kBytes)
sigveseb 0:6ac5ba1343bf 23 #define EPD_ENABLE_EXTRA_SRAM 1
sigveseb 0:6ac5ba1343bf 24
sigveseb 0:6ac5ba1343bf 25 typedef enum {
sigveseb 0:6ac5ba1343bf 26 EPD_1_44, // 128 x 96
sigveseb 0:6ac5ba1343bf 27 EPD_2_0, // 200 x 96
sigveseb 0:6ac5ba1343bf 28 EPD_2_7 // 264 x 176
sigveseb 0:6ac5ba1343bf 29 } EPD_size;
sigveseb 0:6ac5ba1343bf 30
sigveseb 0:6ac5ba1343bf 31 typedef enum { // Image pixel -> Display pixel
sigveseb 0:6ac5ba1343bf 32 EPD_compensate, // B -> W, W -> B (Current Image)
sigveseb 0:6ac5ba1343bf 33 EPD_white, // B -> N, W -> W (Current Image)
sigveseb 0:6ac5ba1343bf 34 EPD_inverse, // B -> N, W -> B (New Image)
sigveseb 0:6ac5ba1343bf 35 EPD_normal // B -> B, W -> W (New Image)
sigveseb 0:6ac5ba1343bf 36 } EPD_stage;
sigveseb 0:6ac5ba1343bf 37
sigveseb 0:6ac5ba1343bf 38 typedef void EPD_reader(void *buffer, uint32_t address, uint16_t length);
sigveseb 0:6ac5ba1343bf 39
sigveseb 0:6ac5ba1343bf 40 class EPD_Class
sigveseb 0:6ac5ba1343bf 41 {
sigveseb 0:6ac5ba1343bf 42 public:
sigveseb 0:6ac5ba1343bf 43 uint16_t lines_per_display;
sigveseb 0:6ac5ba1343bf 44
sigveseb 0:6ac5ba1343bf 45 private:
sigveseb 0:6ac5ba1343bf 46
sigveseb 0:6ac5ba1343bf 47 DigitalOut EPD_Pin_EPD_CS;
sigveseb 0:6ac5ba1343bf 48 DigitalOut EPD_Pin_PANEL_ON;
sigveseb 0:6ac5ba1343bf 49 DigitalOut EPD_Pin_BORDER;
sigveseb 0:6ac5ba1343bf 50 DigitalOut EPD_Pin_DISCHARGE;
sigveseb 0:6ac5ba1343bf 51 PwmOut EPD_Pin_PWM;
sigveseb 0:6ac5ba1343bf 52 DigitalOut EPD_Pin_RESET;
sigveseb 0:6ac5ba1343bf 53 DigitalIn EPD_Pin_BUSY;
sigveseb 0:6ac5ba1343bf 54
sigveseb 0:6ac5ba1343bf 55 EPD_size size;
sigveseb 0:6ac5ba1343bf 56 uint16_t stage_time;
sigveseb 0:6ac5ba1343bf 57
sigveseb 0:6ac5ba1343bf 58 uint16_t factored_stage_time;
sigveseb 0:6ac5ba1343bf 59 uint16_t dots_per_line;
sigveseb 0:6ac5ba1343bf 60 uint16_t bytes_per_line;
sigveseb 0:6ac5ba1343bf 61 uint16_t bytes_per_scan;
sigveseb 0:6ac5ba1343bf 62 const uint8_t *gate_source;
sigveseb 0:6ac5ba1343bf 63 uint16_t gate_source_length;
sigveseb 0:6ac5ba1343bf 64 const uint8_t *channel_select;
sigveseb 0:6ac5ba1343bf 65 uint16_t channel_select_length;
sigveseb 0:6ac5ba1343bf 66
sigveseb 0:6ac5ba1343bf 67 bool filler;
sigveseb 0:6ac5ba1343bf 68
sigveseb 0:6ac5ba1343bf 69 public:
sigveseb 0:6ac5ba1343bf 70 unsigned char lineDta[33];
sigveseb 0:6ac5ba1343bf 71
sigveseb 0:6ac5ba1343bf 72 public:
sigveseb 0:6ac5ba1343bf 73 EPD_Class(PinName Pin_EPD_CS, PinName Pin_PANEL_ON, PinName Pin_BORDER, PinName Pin_DISCHARGE, PinName Pin_PWM, PinName Pin_RESET, PinName Pin_BUSY);
sigveseb 0:6ac5ba1343bf 74 // power up and power down the EPD panel
sigveseb 0:6ac5ba1343bf 75 void begin(EPD_size sz);
sigveseb 0:6ac5ba1343bf 76 void start();
sigveseb 0:6ac5ba1343bf 77 void end();
sigveseb 0:6ac5ba1343bf 78
sigveseb 0:6ac5ba1343bf 79 void setFactor(int temperature = 25) {
sigveseb 0:6ac5ba1343bf 80 this->factored_stage_time = this->stage_time * this->temperature_to_factor_10x(temperature) / 10;
sigveseb 0:6ac5ba1343bf 81 }
sigveseb 0:6ac5ba1343bf 82
sigveseb 0:6ac5ba1343bf 83 // clear display (anything -> white)
sigveseb 0:6ac5ba1343bf 84 void clear(int from_line = 0, int to_line = -1)
sigveseb 0:6ac5ba1343bf 85 {
sigveseb 0:6ac5ba1343bf 86 if(to_line == -1){
sigveseb 0:6ac5ba1343bf 87 to_line = this->lines_per_display;
sigveseb 0:6ac5ba1343bf 88 }
sigveseb 0:6ac5ba1343bf 89 this->frame_fixed_repeat(0xff, EPD_compensate, from_line, to_line);
sigveseb 0:6ac5ba1343bf 90 this->frame_fixed_repeat(0xff, EPD_white, from_line, to_line);
sigveseb 0:6ac5ba1343bf 91 this->frame_fixed_repeat(0xaa, EPD_inverse, from_line, to_line);
sigveseb 0:6ac5ba1343bf 92 this->frame_fixed_repeat(0xaa, EPD_normal, from_line, to_line);
sigveseb 0:6ac5ba1343bf 93 }
sigveseb 0:6ac5ba1343bf 94
sigveseb 0:6ac5ba1343bf 95 // assuming a clear (white) screen output an image (PROGMEM data)
sigveseb 0:6ac5ba1343bf 96 void image(const uint8_t *image, int from_line = 0, int to_line = -1)
sigveseb 0:6ac5ba1343bf 97 {
sigveseb 0:6ac5ba1343bf 98 if(to_line == -1){
sigveseb 0:6ac5ba1343bf 99 to_line = this->lines_per_display;
sigveseb 0:6ac5ba1343bf 100 }
sigveseb 0:6ac5ba1343bf 101 this->frame_fixed_repeat(0xaa, EPD_compensate, from_line, to_line);
sigveseb 0:6ac5ba1343bf 102 this->frame_fixed_repeat(0xaa, EPD_white, from_line, to_line);
sigveseb 0:6ac5ba1343bf 103 this->frame_data_repeat(image, EPD_inverse, from_line, to_line);
sigveseb 0:6ac5ba1343bf 104 this->frame_data_repeat(image, EPD_normal, from_line, to_line);
sigveseb 0:6ac5ba1343bf 105 }
sigveseb 0:6ac5ba1343bf 106
sigveseb 0:6ac5ba1343bf 107 #if defined(__AVR_ATmega32U4__) || defined(__AVR_ATmega328P__)
sigveseb 0:6ac5ba1343bf 108 void image_sd()
sigveseb 0:6ac5ba1343bf 109 {
sigveseb 0:6ac5ba1343bf 110 this->frame_fixed_repeat(0xaa, EPD_compensate);
sigveseb 0:6ac5ba1343bf 111 this->frame_fixed_repeat(0xaa, EPD_white);
sigveseb 0:6ac5ba1343bf 112 this->frame_data_repeat_sd(EPD_inverse);
sigveseb 0:6ac5ba1343bf 113 this->frame_data_repeat_sd(EPD_normal);
sigveseb 0:6ac5ba1343bf 114 }
sigveseb 0:6ac5ba1343bf 115 #endif
sigveseb 0:6ac5ba1343bf 116 // change from old image to new image (PROGMEM data)
sigveseb 0:6ac5ba1343bf 117 /*
sigveseb 0:6ac5ba1343bf 118 void image(const uint8_t *old_image, const uint8_t *new_image)
sigveseb 0:6ac5ba1343bf 119 {
sigveseb 0:6ac5ba1343bf 120 this->frame_data_repeat(old_image, EPD_compensate);
sigveseb 0:6ac5ba1343bf 121 this->frame_data_repeat(old_image, EPD_white);
sigveseb 0:6ac5ba1343bf 122 this->frame_data_repeat(new_image, EPD_inverse);
sigveseb 0:6ac5ba1343bf 123 this->frame_data_repeat(new_image, EPD_normal);
sigveseb 0:6ac5ba1343bf 124 }
sigveseb 0:6ac5ba1343bf 125 */
sigveseb 0:6ac5ba1343bf 126
sigveseb 0:6ac5ba1343bf 127
sigveseb 0:6ac5ba1343bf 128 // Low level API calls
sigveseb 0:6ac5ba1343bf 129 // ===================
sigveseb 0:6ac5ba1343bf 130
sigveseb 0:6ac5ba1343bf 131 // single frame refresh
sigveseb 0:6ac5ba1343bf 132 void frame_fixed(uint8_t fixed_value, EPD_stage stage, int from_line, int to_line);
sigveseb 0:6ac5ba1343bf 133 void frame_data(const uint8_t *new_image, EPD_stage stage, int from_line, int to_line);
sigveseb 0:6ac5ba1343bf 134 #if defined(__AVR_ATmega32U4__) || defined(__AVR_ATmega328P__)
sigveseb 0:6ac5ba1343bf 135 void frame_data_sd(EPD_stage stage);
sigveseb 0:6ac5ba1343bf 136 #endif
sigveseb 0:6ac5ba1343bf 137
sigveseb 0:6ac5ba1343bf 138 #if defined(EPD_ENABLE_EXTRA_SRAM)
sigveseb 0:6ac5ba1343bf 139 void frame_sram(const uint8_t *new_image, EPD_stage stage);
sigveseb 0:6ac5ba1343bf 140 #endif
sigveseb 0:6ac5ba1343bf 141 void frame_cb(uint32_t address, EPD_reader *reader, EPD_stage stage);
sigveseb 0:6ac5ba1343bf 142
sigveseb 0:6ac5ba1343bf 143 // stage_time frame refresh
sigveseb 0:6ac5ba1343bf 144 void frame_fixed_repeat(uint8_t fixed_value, EPD_stage stage, int from_line, int to_line);
sigveseb 0:6ac5ba1343bf 145 void frame_data_repeat(const uint8_t *new_image, EPD_stage stage, int from_line, int to_line);
sigveseb 0:6ac5ba1343bf 146 #if defined(__AVR_ATmega32U4__) || defined(__AVR_ATmega328P__)
sigveseb 0:6ac5ba1343bf 147 void frame_data_repeat_sd(EPD_stage stage);
sigveseb 0:6ac5ba1343bf 148 #endif
sigveseb 0:6ac5ba1343bf 149
sigveseb 0:6ac5ba1343bf 150 #if defined(EPD_ENABLE_EXTRA_SRAM)
sigveseb 0:6ac5ba1343bf 151 void frame_sram_repeat(const uint8_t *new_image, EPD_stage stage);
sigveseb 0:6ac5ba1343bf 152 #endif
sigveseb 0:6ac5ba1343bf 153 void frame_cb_repeat(uint32_t address, EPD_reader *reader, EPD_stage stage);
sigveseb 0:6ac5ba1343bf 154
sigveseb 0:6ac5ba1343bf 155 // convert temperature to compensation factor
sigveseb 0:6ac5ba1343bf 156 int temperature_to_factor_10x(int temperature);
sigveseb 0:6ac5ba1343bf 157
sigveseb 0:6ac5ba1343bf 158 // single line display - very low-level
sigveseb 0:6ac5ba1343bf 159 // also has to handle AVR progmem
sigveseb 0:6ac5ba1343bf 160 void line(uint16_t line, const uint8_t *data, uint8_t fixed_value, bool read_progmem, EPD_stage stage);
sigveseb 0:6ac5ba1343bf 161 #if defined(__AVR_ATmega32U4__) || defined(__AVR_ATmega328P__)
sigveseb 0:6ac5ba1343bf 162 void line_sd(uint16_t line, const uint8_t *data, uint8_t fixed_value, bool read_progmem, EPD_stage stage);
sigveseb 0:6ac5ba1343bf 163 #endif
sigveseb 0:6ac5ba1343bf 164 };
sigveseb 0:6ac5ba1343bf 165
sigveseb 0:6ac5ba1343bf 166 extern EPD_Class EPD;
sigveseb 0:6ac5ba1343bf 167
sigveseb 0:6ac5ba1343bf 168 #endif