Mark Roberts / ePD_2_7b_example

An example to display some text and graphics on a Waveshare 2.7" ePaper display tri-colour. From Kanjia 2.13" code.

Dependencies:   EPD_2R7b

main.cpp@0:fc1642aade4a, 2019-12-06 (annotated)

Committer:
mdroberts1243
Date:
Fri Dec 06 23:31:49 2019 +0000
Revision:
0:fc1642aade4a
First commit.  Adapted from Kanjia 2.13" example. May have an issue with an x offset (8 pixel border on Rotate 90 degrees mode)

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mdroberts1243 0:fc1642aade4a 1 /*
mdroberts1243 0:fc1642aade4a 2 * e-Paper control program
mdroberts1243 0:fc1642aade4a 3 * MODIFIED by Mark Roberts for the Waveshare 2.7inch Pi Hat
mdroberts1243 0:fc1642aade4a 4 * Tested on Nucleo L432KC with pins as defined below...
mdroberts1243 0:fc1642aade4a 5 * https://www.waveshare.com/wiki/2.7inch_e-Paper_HAT?spm=a2g0o.detail.1000023.17.1e014701V7d4HU&file=2.7inch_e-Paper_HAT
mdroberts1243 0:fc1642aade4a 6 *
mdroberts1243 0:fc1642aade4a 7 * Copyright (c) 2019 Kenji Arai / JH1PJL
mdroberts1243 0:fc1642aade4a 8 * http://www.page.sannet.ne.jp/kenjia/index.html
mdroberts1243 0:fc1642aade4a 9 * http://mbed.org/users/kenjiArai/
mdroberts1243 0:fc1642aade4a 10 * Created: April 27th, 2019
mdroberts1243 0:fc1642aade4a 11 * Revised: June 29th, 2019
mdroberts1243 0:fc1642aade4a 12 *
mdroberts1243 0:fc1642aade4a 13 * Tested on Nucleo-F446RE with mbed-os5.12.2
mdroberts1243 0:fc1642aade4a 14 *
mdroberts1243 0:fc1642aade4a 15 * Refrence software
mdroberts1243 0:fc1642aade4a 16 * https://github.com/waveshare/e-Paper
mdroberts1243 0:fc1642aade4a 17 * https://os.mbed.com/users/imachooon/code/epd1in54/
mdroberts1243 0:fc1642aade4a 18 * Thanks imamura-san
mdroberts1243 0:fc1642aade4a 19 *
mdroberts1243 0:fc1642aade4a 20 * Technical documents
mdroberts1243 0:fc1642aade4a 21 * https://www.waveshare.com/wiki/2.13inch_e-Paper_HAT_(B)
mdroberts1243 0:fc1642aade4a 22 *
mdroberts1243 0:fc1642aade4a 23 * Product
mdroberts1243 0:fc1642aade4a 24 * http://akizukidenshi.com/catalog/g/gP-13757/
mdroberts1243 0:fc1642aade4a 25 * https://www.waveshare.com/2.13inch-e-paper-hat-b.htm
mdroberts1243 0:fc1642aade4a 26 */
mdroberts1243 0:fc1642aade4a 27
mdroberts1243 0:fc1642aade4a 28 // Include --------------------------------------------------------------------
mdroberts1243 0:fc1642aade4a 29 #include "mbed.h"
mdroberts1243 0:fc1642aade4a 30 #include "epd2in7b.h"
mdroberts1243 0:fc1642aade4a 31 #include "epdpaint.h"
mdroberts1243 0:fc1642aade4a 32
mdroberts1243 0:fc1642aade4a 33 // Definition -----------------------------------------------------------------
mdroberts1243 0:fc1642aade4a 34 #define COLORED 0
mdroberts1243 0:fc1642aade4a 35 #define UNCOLORED 1
mdroberts1243 0:fc1642aade4a 36
mdroberts1243 0:fc1642aade4a 37 // Constructor ----------------------------------------------------------------
mdroberts1243 0:fc1642aade4a 38 // 3.3V, GND, DIN, , CLK, CS, DC, RST, BUSY, <- 2.13inch e-Paper pin
mdroberts1243 0:fc1642aade4a 39 // mosi, miso, sclk, cs, dc, rst, busy, pwr
mdroberts1243 0:fc1642aade4a 40 Epd epd = Epd( PB_5, NC, PB_3, PA_11, PA_0, PA_12, PA_1, NC); // modified for NUCLEO_L432KC
mdroberts1243 0:fc1642aade4a 41
mdroberts1243 0:fc1642aade4a 42 Serial pc(USBTX, USBRX);
mdroberts1243 0:fc1642aade4a 43 Timer t;
mdroberts1243 0:fc1642aade4a 44 static int timeSet = 0;
mdroberts1243 0:fc1642aade4a 45
mdroberts1243 0:fc1642aade4a 46 // RAM ------------------------------------------------------------------------
mdroberts1243 0:fc1642aade4a 47 uint8_t image[EPD_VERT*(EPD_HORIZ/8 + 1)];
mdroberts1243 0:fc1642aade4a 48
mdroberts1243 0:fc1642aade4a 49 // ROM / Constant data --------------------------------------------------------
mdroberts1243 0:fc1642aade4a 50
mdroberts1243 0:fc1642aade4a 51 // Function prototypes --------------------------------------------------------
mdroberts1243 0:fc1642aade4a 52 extern void time_enter_mode(void);
mdroberts1243 0:fc1642aade4a 53
mdroberts1243 0:fc1642aade4a 54 //------------------------------------------------------------------------------
mdroberts1243 0:fc1642aade4a 55 // Control Program
mdroberts1243 0:fc1642aade4a 56 //------------------------------------------------------------------------------
mdroberts1243 0:fc1642aade4a 57 int main()
mdroberts1243 0:fc1642aade4a 58 {
mdroberts1243 0:fc1642aade4a 59 time_t seconds;
mdroberts1243 0:fc1642aade4a 60 char buf[32];
mdroberts1243 0:fc1642aade4a 61
mdroberts1243 0:fc1642aade4a 62 t.reset();
mdroberts1243 0:fc1642aade4a 63 t.start();
mdroberts1243 0:fc1642aade4a 64 /*
mdroberts1243 0:fc1642aade4a 65 if (timeSet == 0) { // if time not set then go to time enter mode
mdroberts1243 0:fc1642aade4a 66 time_enter_mode();
mdroberts1243 0:fc1642aade4a 67 timeSet = 1;
mdroberts1243 0:fc1642aade4a 68 }
mdroberts1243 0:fc1642aade4a 69 */
mdroberts1243 0:fc1642aade4a 70 seconds = time(NULL); // read current time
mdroberts1243 0:fc1642aade4a 71 if (epd.Init() != 0) { // initialize e-Paper control program
mdroberts1243 0:fc1642aade4a 72 printf("e-Paper init failed");
mdroberts1243 0:fc1642aade4a 73 return -1;
mdroberts1243 0:fc1642aade4a 74 }
mdroberts1243 0:fc1642aade4a 75 epd.ClearFrame();
mdroberts1243 0:fc1642aade4a 76 printf("Clear Frame completed\r\n");
mdroberts1243 0:fc1642aade4a 77 ThisThread::sleep_for(200);
mdroberts1243 0:fc1642aade4a 78 Paint paint(image, EPD_HORIZ, EPD_VERT);
mdroberts1243 0:fc1642aade4a 79 paint.Clear(UNCOLORED);
mdroberts1243 0:fc1642aade4a 80 printf("Clear uncolored 1 complete\r\n");
mdroberts1243 0:fc1642aade4a 81
mdroberts1243 0:fc1642aade4a 82 paint.SetRotate(ROTATE_90);
mdroberts1243 0:fc1642aade4a 83 paint.DrawStringAt(0, 4, "12345678901234567890123456789",
mdroberts1243 0:fc1642aade4a 84 &Font8, COLORED);
mdroberts1243 0:fc1642aade4a 85 paint.DrawStringAt(0, 16, "12345678901234567890123456789",
mdroberts1243 0:fc1642aade4a 86 &Font12, COLORED);
mdroberts1243 0:fc1642aade4a 87 paint.DrawStringAt(0, 32, "12345678901234567890123",
mdroberts1243 0:fc1642aade4a 88 &Font16, COLORED);
mdroberts1243 0:fc1642aade4a 89 paint.DrawStringAt(0, 54, "123456789012345678",
mdroberts1243 0:fc1642aade4a 90 &Font20, COLORED);
mdroberts1243 0:fc1642aade4a 91 paint.DrawStringAt(0, 80, "123456789012345",
mdroberts1243 0:fc1642aade4a 92 &Font24, COLORED);
mdroberts1243 0:fc1642aade4a 93 paint.DrawStringAt(0, 110, "Waveshare 2.7 e-Paper WBR",
mdroberts1243 0:fc1642aade4a 94 &Font12, COLORED);
mdroberts1243 0:fc1642aade4a 95 paint.DrawStringAt(0, 124, " tested on Nucleo-L432KC",
mdroberts1243 0:fc1642aade4a 96 &Font12, COLORED);
mdroberts1243 0:fc1642aade4a 97 paint.DrawStringAt(0, 138, " by mdroberts1243 ",
mdroberts1243 0:fc1642aade4a 98 &Font12, COLORED);
mdroberts1243 0:fc1642aade4a 99 strftime(buf, 30, "'%y-%m-%d %H:%M", localtime(&seconds));
mdroberts1243 0:fc1642aade4a 100 paint.DrawStringAt(0, 160, buf, &Font16, COLORED);
mdroberts1243 0:fc1642aade4a 101 printf("Text paint buffer rendered\r\n");
mdroberts1243 0:fc1642aade4a 102
mdroberts1243 0:fc1642aade4a 103 epd.SetPartialWindowBlack(paint.GetImage(), 0, 8,
mdroberts1243 0:fc1642aade4a 104 paint.GetWidth(), paint.GetHeight());
mdroberts1243 0:fc1642aade4a 105 printf("SetPartialWindowBlack\r\n");
mdroberts1243 0:fc1642aade4a 106
mdroberts1243 0:fc1642aade4a 107 paint.Clear(UNCOLORED);
mdroberts1243 0:fc1642aade4a 108 printf("Clear uncolored 2 complete\r\n");
mdroberts1243 0:fc1642aade4a 109 paint.SetRotate(ROTATE_90);
mdroberts1243 0:fc1642aade4a 110 paint.DrawFilledRectangle(0, 150, 250, 156, COLORED);
mdroberts1243 0:fc1642aade4a 111 printf("Filled rectangle\r\n");
mdroberts1243 0:fc1642aade4a 112 paint.DrawFilledCircle(244, 150, 18, COLORED);
mdroberts1243 0:fc1642aade4a 113 printf("Filled circle\r\n");
mdroberts1243 0:fc1642aade4a 114 epd.SetPartialWindowRed(paint.GetImage(), 0, 8,
mdroberts1243 0:fc1642aade4a 115 paint.GetWidth(), paint.GetHeight());
mdroberts1243 0:fc1642aade4a 116 printf("SetPartialWindowRed\r\n");
mdroberts1243 0:fc1642aade4a 117
mdroberts1243 0:fc1642aade4a 118 epd.DisplayFrame();
mdroberts1243 0:fc1642aade4a 119 printf("DisplayFrame\r\n");
mdroberts1243 0:fc1642aade4a 120
mdroberts1243 0:fc1642aade4a 121 epd.Sleep();
mdroberts1243 0:fc1642aade4a 122
mdroberts1243 0:fc1642aade4a 123 strftime(buf, 30, " %B %d,'%y, %H:%M:%S", localtime(&seconds));
mdroberts1243 0:fc1642aade4a 124 pc.puts(buf);
mdroberts1243 0:fc1642aade4a 125 pc.printf(" Display + Refresh time = %5.1f Sec\r\n", t.read());
mdroberts1243 0:fc1642aade4a 126 ThisThread::sleep_for((1000 * 60 * 1) - t.read_ms()); // sleep 1 minute
mdroberts1243 0:fc1642aade4a 127 system_reset(); // restart
mdroberts1243 0:fc1642aade4a 128 }