1 | /*********************************************************************
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2 | This is a library for our Monochrome OLEDs based on SSD1306 drivers
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3 |
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4 | Pick one up today in the adafruit shop!
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5 | ------> http://www.adafruit.com/category/63_98
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6 |
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7 | These displays use SPI to communicate, 4 or 5 pins are required to
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8 | interface
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9 |
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10 | Adafruit invests time and resources providing this open source code,
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11 | please support Adafruit and open-source hardware by purchasing
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12 | products from Adafruit!
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13 |
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14 | Written by Limor Fried/Ladyada for Adafruit Industries.
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15 | BSD license, check license.txt for more information
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16 | All text above, and the splash screen below must be included in any redistribution
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17 | *********************************************************************/
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18 |
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19 | #include <string.h>
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20 | #include <kernel.h>
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21 | #include <t_syslog.h>
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22 | #include <t_stdlib.h>
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23 | #include <target_syssvc.h>
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24 | #include <time.h>
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25 | #include "syssvc/serial.h"
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26 | #include "syssvc/syslog.h"
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27 | #include "adafruit_ssd1306.h"
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28 |
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29 | #define HIGH 1
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30 | #define LOW 0
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31 |
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32 | // the memory buffer for the LCD
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33 |
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34 | static uint8_t buffer[SSD1306_LCDHEIGHT * SSD1306_LCDWIDTH / 8] = {
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35 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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36 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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37 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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38 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80,
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39 | 0x80, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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40 | 0x00, 0x80, 0x80, 0xC0, 0xC0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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41 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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42 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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43 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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44 | 0x00, 0x00, 0x00, 0x00, 0x80, 0xC0, 0xE0, 0xF0, 0xF8, 0xFC, 0xF8, 0xE0, 0x00, 0x00, 0x00, 0x00,
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45 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x80, 0x80,
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46 | 0x80, 0x80, 0x00, 0x80, 0x80, 0x00, 0x00, 0x00, 0x00, 0x80, 0x80, 0x80, 0x80, 0x80, 0x00, 0xFF,
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47 | #if (SSD1306_LCDHEIGHT * SSD1306_LCDWIDTH > 96*16)
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48 | 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x80, 0x80, 0x80, 0x80, 0x00, 0x00, 0x80, 0x80, 0x00, 0x00,
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49 | 0x80, 0xFF, 0xFF, 0x80, 0x80, 0x00, 0x80, 0x80, 0x00, 0x80, 0x80, 0x80, 0x80, 0x00, 0x80, 0x80,
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50 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x80, 0x00, 0x00, 0x8C, 0x8E, 0x84, 0x00, 0x00, 0x80, 0xF8,
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51 | 0xF8, 0xF8, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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52 | 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xE0, 0xE0, 0xC0, 0x80,
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53 | 0x00, 0xE0, 0xFC, 0xFE, 0xFF, 0xFF, 0xFF, 0x7F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00,
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54 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFE, 0xFF, 0xC7, 0x01, 0x01,
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55 | 0x01, 0x01, 0x83, 0xFF, 0xFF, 0x00, 0x00, 0x7C, 0xFE, 0xC7, 0x01, 0x01, 0x01, 0x01, 0x83, 0xFF,
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56 | 0xFF, 0xFF, 0x00, 0x38, 0xFE, 0xC7, 0x83, 0x01, 0x01, 0x01, 0x83, 0xC7, 0xFF, 0xFF, 0x00, 0x00,
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57 | 0x01, 0xFF, 0xFF, 0x01, 0x01, 0x00, 0xFF, 0xFF, 0x07, 0x01, 0x01, 0x01, 0x00, 0x00, 0x7F, 0xFF,
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58 | 0x80, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0x7F, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x01, 0xFF,
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59 | 0xFF, 0xFF, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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60 | 0x03, 0x0F, 0x3F, 0x7F, 0x7F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xE7, 0xC7, 0xC7, 0x8F,
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61 | 0x8F, 0x9F, 0xBF, 0xFF, 0xFF, 0xC3, 0xC0, 0xF0, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFC, 0xFC, 0xFC,
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62 | 0xFC, 0xFC, 0xFC, 0xFC, 0xFC, 0xF8, 0xF8, 0xF0, 0xF0, 0xE0, 0xC0, 0x00, 0x01, 0x03, 0x03, 0x03,
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63 | 0x03, 0x03, 0x01, 0x03, 0x03, 0x00, 0x00, 0x00, 0x00, 0x01, 0x03, 0x03, 0x03, 0x03, 0x01, 0x01,
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64 | 0x03, 0x01, 0x00, 0x00, 0x00, 0x01, 0x03, 0x03, 0x03, 0x03, 0x01, 0x01, 0x03, 0x03, 0x00, 0x00,
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65 | 0x00, 0x03, 0x03, 0x00, 0x00, 0x00, 0x03, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01,
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66 | 0x03, 0x03, 0x03, 0x03, 0x03, 0x01, 0x00, 0x00, 0x00, 0x01, 0x03, 0x01, 0x00, 0x00, 0x00, 0x03,
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67 | 0x03, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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68 | #if (SSD1306_LCDHEIGHT == 64)
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69 | 0x00, 0x00, 0x00, 0x80, 0xC0, 0xE0, 0xF0, 0xF9, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x3F, 0x1F, 0x0F,
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70 | 0x87, 0xC7, 0xF7, 0xFF, 0xFF, 0x1F, 0x1F, 0x3D, 0xFC, 0xF8, 0xF8, 0xF8, 0xF8, 0x7C, 0x7D, 0xFF,
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71 | 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F, 0x3F, 0x0F, 0x07, 0x00, 0x30, 0x30, 0x00, 0x00,
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72 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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73 | 0x00, 0x00, 0x00, 0x00, 0xFE, 0xFE, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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74 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xE0, 0xC0, 0x00,
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75 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x30, 0x30, 0x00, 0x00, 0x00, 0x00,
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76 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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77 | 0x00, 0xC0, 0xFE, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F, 0x7F, 0x3F, 0x1F,
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78 | 0x0F, 0x07, 0x1F, 0x7F, 0xFF, 0xFF, 0xF8, 0xF8, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFE, 0xF8, 0xE0,
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79 | 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFE, 0xFE, 0x00, 0x00,
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80 | 0x00, 0xFC, 0xFE, 0xFC, 0x0C, 0x06, 0x06, 0x0E, 0xFC, 0xF8, 0x00, 0x00, 0xF0, 0xF8, 0x1C, 0x0E,
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81 | 0x06, 0x06, 0x06, 0x0C, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0xFE, 0xFE, 0x00, 0x00, 0x00, 0x00, 0xFC,
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82 | 0xFE, 0xFC, 0x00, 0x18, 0x3C, 0x7E, 0x66, 0xE6, 0xCE, 0x84, 0x00, 0x00, 0x06, 0xFF, 0xFF, 0x06,
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83 | 0x06, 0xFC, 0xFE, 0xFC, 0x0C, 0x06, 0x06, 0x06, 0x00, 0x00, 0xFE, 0xFE, 0x00, 0x00, 0xC0, 0xF8,
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84 | 0xFC, 0x4E, 0x46, 0x46, 0x46, 0x4E, 0x7C, 0x78, 0x40, 0x18, 0x3C, 0x76, 0xE6, 0xCE, 0xCC, 0x80,
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85 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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86 | 0x00, 0x00, 0x00, 0x00, 0x01, 0x07, 0x0F, 0x1F, 0x1F, 0x3F, 0x3F, 0x3F, 0x3F, 0x1F, 0x0F, 0x03,
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87 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0F, 0x0F, 0x00, 0x00,
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88 | 0x00, 0x0F, 0x0F, 0x0F, 0x00, 0x00, 0x00, 0x00, 0x0F, 0x0F, 0x00, 0x00, 0x03, 0x07, 0x0E, 0x0C,
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89 | 0x18, 0x18, 0x0C, 0x06, 0x0F, 0x0F, 0x0F, 0x00, 0x00, 0x01, 0x0F, 0x0E, 0x0C, 0x18, 0x0C, 0x0F,
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90 | 0x07, 0x01, 0x00, 0x04, 0x0E, 0x0C, 0x18, 0x0C, 0x0F, 0x07, 0x00, 0x00, 0x00, 0x0F, 0x0F, 0x00,
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91 | 0x00, 0x0F, 0x0F, 0x0F, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0F, 0x0F, 0x00, 0x00, 0x00, 0x07,
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92 | 0x07, 0x0C, 0x0C, 0x18, 0x1C, 0x0C, 0x06, 0x06, 0x00, 0x04, 0x0E, 0x0C, 0x18, 0x0C, 0x0F, 0x07,
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93 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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94 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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95 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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96 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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97 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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98 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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99 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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100 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
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101 | #endif
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102 | #endif
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103 | };
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104 |
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105 | void lcd_fastSPIwrite(LCD_Handler_t *lcd, uint8_t d);
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106 | #define lcd_swap(a, b) { int16_t t = a; a = b; b = t; }
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107 |
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108 | // the most basic function, set a single pixel
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109 | void lcd_drawPixel(LCD_Handler_t *lcd, int16_t x, int16_t y, uint16_t color) {
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110 | if ((x < 0) || (x >= lcd->_width) || (y < 0) || (y >= lcd->_height))
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111 | return;
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112 |
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113 | // check rotation, move pixel around if necessary
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114 | switch (lcd->rotation) {
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115 | case 1:
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116 | lcd_swap(x, y);
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117 | x = lcd->_width - x - 1;
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118 | break;
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119 | case 2:
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120 | x = lcd->_width - x - 1;
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121 | y = lcd->_height - y - 1;
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122 | break;
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123 | case 3:
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124 | lcd_swap(x, y);
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125 | y = lcd->_height - y - 1;
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126 | break;
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127 | }
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128 |
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129 | // x is which column
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130 | switch (color)
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131 | {
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132 | case WHITE: buffer[x + (y / 8)*SSD1306_LCDWIDTH] |= (1 << (y & 7)); break;
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133 | case BLACK: buffer[x + (y / 8)*SSD1306_LCDWIDTH] &= ~(1 << (y & 7)); break;
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134 | case INVERSE: buffer[x + (y / 8)*SSD1306_LCDWIDTH] ^= (1 << (y & 7)); break;
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135 | }
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136 | }
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137 |
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138 | void lcd_init1(LCD_Handler_t *lcd, int8_t SID, int8_t SCLK, int8_t DC, int8_t RST, int8_t CS)
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139 | {
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140 | lcd->_width = SSD1306_LCDWIDTH;
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141 | lcd->_height = SSD1306_LCDHEIGHT;
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142 | gpio_init(&lcd->cs, CS);
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143 | gpio_init(&lcd->rst, RST);
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144 | gpio_init(&lcd->dc, DC);
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145 | gpio_init(&lcd->sclk, SCLK);
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146 | gpio_init(&lcd->sid, SID);
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147 | lcd->hwSPI = false;
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148 | }
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149 |
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150 | // constructor for hardware SPI - we indicate DataCommand, ChipSelect, Reset
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151 | void lcd_init2(LCD_Handler_t *lcd, int8_t DC, int8_t RST, int8_t CS)
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152 | {
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153 | lcd->_width = SSD1306_LCDWIDTH;
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154 | lcd->_height = SSD1306_LCDHEIGHT;
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155 | gpio_init(&lcd->dc, DC);
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156 | gpio_init(&lcd->rst, RST);
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157 | gpio_init(&lcd->cs, CS);
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158 | lcd->hwSPI = true;
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159 | }
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160 |
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161 | // initializer for I2C - we only indicate the reset pin!
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162 | void lcd_init3(LCD_Handler_t *lcd, int8_t reset)
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163 | {
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164 | lcd->_width = SSD1306_LCDWIDTH;
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165 | lcd->_height = SSD1306_LCDHEIGHT;
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166 | gpio_init(&lcd->sclk, NC);
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167 | gpio_init(&lcd->dc, NC);
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168 | gpio_init(&lcd->cs, NC);
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169 | gpio_init(&lcd->sid, NC);
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170 | gpio_init(&lcd->rst, reset);
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171 | }
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172 |
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173 | void lcd_begin(LCD_Handler_t *lcd, uint8_t vccstate, uint8_t i2caddr, bool_t reset) {
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174 | lcd->_vccstate = vccstate;
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175 | lcd->_i2caddr = i2caddr;
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176 |
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177 | // set pin directions
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178 | if (lcd->sid.pin != NC) {
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179 | gpio_dir(&lcd->dc, PIN_OUTPUT);
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180 | gpio_dir(&lcd->cs, PIN_OUTPUT);
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181 | if (!lcd->hwSPI) {
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182 | // set pins for software-SPI
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183 | gpio_dir(&lcd->sid, PIN_OUTPUT);
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184 | gpio_dir(&lcd->sclk, PIN_OUTPUT);
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185 | }
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186 | if (lcd->hwSPI) {
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187 | spi_format(&lcd->spi, 8, 0, 0);
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188 | spi_master_write(&lcd->spi, 8000000);
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189 | }
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190 | }
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191 | else
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192 | {
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193 | // I2C Init
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194 | //i2c_begin(&lcd->i2c);
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195 | #ifdef __SAM3X8E__
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196 | // Force 400 KHz I2C, rawr! (Uses pins 20, 21 for SDA, SCL)
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197 | TWI1->TWI_CWGR = 0;
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198 | TWI1->TWI_CWGR = ((VARIANT_MCK / (2 * 400000)) - 4) * 0x101;
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199 | #endif
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200 | }
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201 | if ((reset) && (lcd->rst.pin != NC)) {
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202 | // Setup reset pin direction (used by both SPI and I2C)
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203 | gpio_dir(&lcd->rst, PIN_OUTPUT);
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204 | gpio_write(&lcd->rst, HIGH);
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205 | // VDD (3.3V) goes high at start, lets just chill for a ms
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206 | dly_tsk(1 * 1000);
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207 | // bring reset low
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208 | gpio_write(&lcd->rst, LOW);
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209 | // wait 10ms
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210 | dly_tsk(10 * 1000);
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211 | // bring out of reset
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212 | gpio_write(&lcd->rst, HIGH);
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213 | // turn on VCC (9V?)
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214 | }
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215 |
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216 | // Init sequence
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217 | lcd_command(lcd, SSD1306_DISPLAYOFF); // 0xAE
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218 | lcd_command(lcd, SSD1306_SETDISPLAYCLOCKDIV); // 0xD5
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219 | lcd_command(lcd, 0x80); // the suggested ratio 0x80
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220 |
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221 | lcd_command(lcd, SSD1306_SETMULTIPLEX); // 0xA8
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222 | lcd_command(lcd, SSD1306_LCDHEIGHT - 1);
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223 |
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224 | lcd_command(lcd, SSD1306_SETDISPLAYOFFSET); // 0xD3
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225 | lcd_command(lcd, 0x0); // no offset
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226 | lcd_command(lcd, SSD1306_SETSTARTLINE | 0x0); // line #0
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227 | lcd_command(lcd, SSD1306_CHARGEPUMP); // 0x8D
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228 | if (vccstate == SSD1306_EXTERNALVCC)
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229 | {
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230 | lcd_command(lcd, 0x10);
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231 | }
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232 | else
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233 | {
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234 | lcd_command(lcd, 0x14);
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235 | }
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236 | lcd_command(lcd, SSD1306_MEMORYMODE); // 0x20
|
---|
237 | lcd_command(lcd, 0x00); // 0x0 act like ks0108
|
---|
238 | lcd_command(lcd, SSD1306_SEGREMAP | 0x1);
|
---|
239 | lcd_command(lcd, SSD1306_COMSCANDEC);
|
---|
240 |
|
---|
241 | #if defined SSD1306_128_32
|
---|
242 | lcd_command(lcd, SSD1306_SETCOMPINS); // 0xDA
|
---|
243 | lcd_command(lcd, 0x02);
|
---|
244 | lcd_command(lcd, SSD1306_SETCONTRAST); // 0x81
|
---|
245 | lcd_command(lcd, 0x8F);
|
---|
246 |
|
---|
247 | #elif defined SSD1306_128_64
|
---|
248 | lcd_command(lcd, SSD1306_SETCOMPINS); // 0xDA
|
---|
249 | lcd_command(lcd, 0x12);
|
---|
250 | lcd_command(lcd, SSD1306_SETCONTRAST); // 0x81
|
---|
251 | if (vccstate == SSD1306_EXTERNALVCC)
|
---|
252 | {
|
---|
253 | lcd_command(lcd, 0x9F);
|
---|
254 | }
|
---|
255 | else
|
---|
256 | {
|
---|
257 | lcd_command(lcd, 0xCF);
|
---|
258 | }
|
---|
259 |
|
---|
260 | #elif defined SSD1306_96_16
|
---|
261 | lcd_command(lcd, SSD1306_SETCOMPINS); // 0xDA
|
---|
262 | lcd_command(lcd, 0x2); //ada x12
|
---|
263 | lcd_command(lcd, SSD1306_SETCONTRAST); // 0x81
|
---|
264 | if (vccstate == SSD1306_EXTERNALVCC)
|
---|
265 | {
|
---|
266 | lcd_command(lcd, 0x10);
|
---|
267 | }
|
---|
268 | else
|
---|
269 | {
|
---|
270 | lcd_command(lcd, 0xAF);
|
---|
271 | }
|
---|
272 |
|
---|
273 | #endif
|
---|
274 |
|
---|
275 | lcd_command(lcd, SSD1306_SETPRECHARGE); // 0xd9
|
---|
276 | if (vccstate == SSD1306_EXTERNALVCC)
|
---|
277 | {
|
---|
278 | lcd_command(lcd, 0x22);
|
---|
279 | }
|
---|
280 | else
|
---|
281 | {
|
---|
282 | lcd_command(lcd, 0xF1);
|
---|
283 | }
|
---|
284 | lcd_command(lcd, SSD1306_SETVCOMDETECT); // 0xDB
|
---|
285 | lcd_command(lcd, 0x40);
|
---|
286 | lcd_command(lcd, SSD1306_DISPLAYALLON_RESUME); // 0xA4
|
---|
287 | lcd_command(lcd, SSD1306_NORMALDISPLAY); // 0xA6
|
---|
288 |
|
---|
289 | lcd_command(lcd, SSD1306_DEACTIVATE_SCROLL);
|
---|
290 |
|
---|
291 | lcd_command(lcd, SSD1306_DISPLAYON);//--turn on oled panel
|
---|
292 | }
|
---|
293 |
|
---|
294 |
|
---|
295 | void lcd_invertDisplay(LCD_Handler_t *lcd, uint8_t i) {
|
---|
296 | if (i) {
|
---|
297 | lcd_command(lcd, SSD1306_INVERTDISPLAY);
|
---|
298 | }
|
---|
299 | else {
|
---|
300 | lcd_command(lcd, SSD1306_NORMALDISPLAY);
|
---|
301 | }
|
---|
302 | }
|
---|
303 |
|
---|
304 | void lcd_command(LCD_Handler_t *lcd, uint8_t c) {
|
---|
305 | if (lcd->sid.pin != NC)
|
---|
306 | {
|
---|
307 | // SPI
|
---|
308 | gpio_write(&lcd->cs, HIGH);
|
---|
309 | gpio_write(&lcd->dc, LOW);
|
---|
310 | gpio_write(&lcd->cs, LOW);
|
---|
311 | lcd_fastSPIwrite(lcd, c);
|
---|
312 | gpio_write(&lcd->cs, HIGH);
|
---|
313 | }
|
---|
314 | else
|
---|
315 | {
|
---|
316 | // I2C
|
---|
317 | uint8_t data[2] = { 0x00/* Co = 0, D/C = 0*/, c };
|
---|
318 | i2c_write(&lcd->i2c, lcd->_i2caddr, data, sizeof(data), 1);
|
---|
319 | }
|
---|
320 | }
|
---|
321 |
|
---|
322 | // startscrollright
|
---|
323 | // Activate a right handed scroll for rows start through stop
|
---|
324 | // Hint, the display is 16 rows tall. To scroll the whole display, run:
|
---|
325 | // display.scrollright(0x00, 0x0F)
|
---|
326 | void lcd_startscrollright(LCD_Handler_t *lcd, uint8_t start, uint8_t stop) {
|
---|
327 | lcd_command(lcd, SSD1306_RIGHT_HORIZONTAL_SCROLL);
|
---|
328 | lcd_command(lcd, 0X00);
|
---|
329 | lcd_command(lcd, start);
|
---|
330 | lcd_command(lcd, 0X00);
|
---|
331 | lcd_command(lcd, stop);
|
---|
332 | lcd_command(lcd, 0X00);
|
---|
333 | lcd_command(lcd, 0XFF);
|
---|
334 | lcd_command(lcd, SSD1306_ACTIVATE_SCROLL);
|
---|
335 | }
|
---|
336 |
|
---|
337 | // startscrollleft
|
---|
338 | // Activate a right handed scroll for rows start through stop
|
---|
339 | // Hint, the display is 16 rows tall. To scroll the whole display, run:
|
---|
340 | // display.scrollright(0x00, 0x0F)
|
---|
341 | void lcd_startscrollleft(LCD_Handler_t *lcd, uint8_t start, uint8_t stop) {
|
---|
342 | lcd_command(lcd, SSD1306_LEFT_HORIZONTAL_SCROLL);
|
---|
343 | lcd_command(lcd, 0X00);
|
---|
344 | lcd_command(lcd, start);
|
---|
345 | lcd_command(lcd, 0X00);
|
---|
346 | lcd_command(lcd, stop);
|
---|
347 | lcd_command(lcd, 0X00);
|
---|
348 | lcd_command(lcd, 0XFF);
|
---|
349 | lcd_command(lcd, SSD1306_ACTIVATE_SCROLL);
|
---|
350 | }
|
---|
351 |
|
---|
352 | // startscrolldiagright
|
---|
353 | // Activate a diagonal scroll for rows start through stop
|
---|
354 | // Hint, the display is 16 rows tall. To scroll the whole display, run:
|
---|
355 | // display.scrollright(0x00, 0x0F)
|
---|
356 | void lcd_startscrolldiagright(LCD_Handler_t *lcd, uint8_t start, uint8_t stop) {
|
---|
357 | lcd_command(lcd, SSD1306_SET_VERTICAL_SCROLL_AREA);
|
---|
358 | lcd_command(lcd, 0X00);
|
---|
359 | lcd_command(lcd, SSD1306_LCDHEIGHT);
|
---|
360 | lcd_command(lcd, SSD1306_VERTICAL_AND_RIGHT_HORIZONTAL_SCROLL);
|
---|
361 | lcd_command(lcd, 0X00);
|
---|
362 | lcd_command(lcd, start);
|
---|
363 | lcd_command(lcd, 0X00);
|
---|
364 | lcd_command(lcd, stop);
|
---|
365 | lcd_command(lcd, 0X01);
|
---|
366 | lcd_command(lcd, SSD1306_ACTIVATE_SCROLL);
|
---|
367 | }
|
---|
368 |
|
---|
369 | // startscrolldiagleft
|
---|
370 | // Activate a diagonal scroll for rows start through stop
|
---|
371 | // Hint, the display is 16 rows tall. To scroll the whole display, run:
|
---|
372 | // display.scrollright(0x00, 0x0F)
|
---|
373 | void lcd_startscrolldiagleft(LCD_Handler_t *lcd, uint8_t start, uint8_t stop) {
|
---|
374 | lcd_command(lcd, SSD1306_SET_VERTICAL_SCROLL_AREA);
|
---|
375 | lcd_command(lcd, 0X00);
|
---|
376 | lcd_command(lcd, SSD1306_LCDHEIGHT);
|
---|
377 | lcd_command(lcd, SSD1306_VERTICAL_AND_LEFT_HORIZONTAL_SCROLL);
|
---|
378 | lcd_command(lcd, 0X00);
|
---|
379 | lcd_command(lcd, start);
|
---|
380 | lcd_command(lcd, 0X00);
|
---|
381 | lcd_command(lcd, stop);
|
---|
382 | lcd_command(lcd, 0X01);
|
---|
383 | lcd_command(lcd, SSD1306_ACTIVATE_SCROLL);
|
---|
384 | }
|
---|
385 |
|
---|
386 | void lcd_stopscroll(LCD_Handler_t *lcd) {
|
---|
387 | lcd_command(lcd, SSD1306_DEACTIVATE_SCROLL);
|
---|
388 | }
|
---|
389 |
|
---|
390 | // Dim the display
|
---|
391 | // dim = true: display is dimmed
|
---|
392 | // dim = false: display is normal
|
---|
393 | void lcd_dim(LCD_Handler_t *lcd, bool_t dim) {
|
---|
394 | uint8_t contrast;
|
---|
395 |
|
---|
396 | if (dim) {
|
---|
397 | contrast = 0; // Dimmed display
|
---|
398 | }
|
---|
399 | else {
|
---|
400 | if (lcd->_vccstate == SSD1306_EXTERNALVCC) {
|
---|
401 | contrast = 0x9F;
|
---|
402 | }
|
---|
403 | else {
|
---|
404 | contrast = 0xCF;
|
---|
405 | }
|
---|
406 | }
|
---|
407 | // the range of contrast to too small to be really useful
|
---|
408 | // it is useful to dim the display
|
---|
409 | lcd_command(lcd, SSD1306_SETCONTRAST);
|
---|
410 | lcd_command(lcd, contrast);
|
---|
411 | }
|
---|
412 |
|
---|
413 | void lcd_display(LCD_Handler_t *lcd) {
|
---|
414 | lcd_command(lcd, SSD1306_COLUMNADDR);
|
---|
415 | lcd_command(lcd, 0); // Column start address (0 = reset)
|
---|
416 | lcd_command(lcd, SSD1306_LCDWIDTH - 1); // Column end address (127 = reset)
|
---|
417 |
|
---|
418 | lcd_command(lcd, SSD1306_PAGEADDR);
|
---|
419 | lcd_command(lcd, 0); // Page start address (0 = reset)
|
---|
420 | #if SSD1306_LCDHEIGHT == 64
|
---|
421 | lcd_command(lcd, 7); // Page end address
|
---|
422 | #endif
|
---|
423 | #if SSD1306_LCDHEIGHT == 32
|
---|
424 | lcd_command(lcd, 3); // Page end address
|
---|
425 | #endif
|
---|
426 | #if SSD1306_LCDHEIGHT == 16
|
---|
427 | lcd_command(lcd, 1); // Page end address
|
---|
428 | #endif
|
---|
429 |
|
---|
430 | if (lcd->sid.pin != NC)
|
---|
431 | {
|
---|
432 | // SPI
|
---|
433 | gpio_write(&lcd->cs, HIGH);
|
---|
434 | gpio_write(&lcd->dc, HIGH);
|
---|
435 | gpio_write(&lcd->cs, LOW);
|
---|
436 |
|
---|
437 | for (uint16_t i = 0; i < (SSD1306_LCDWIDTH*SSD1306_LCDHEIGHT / 8); i++) {
|
---|
438 | lcd_fastSPIwrite(lcd, buffer[i]);
|
---|
439 | }
|
---|
440 | gpio_write(&lcd->cs, HIGH);
|
---|
441 | }
|
---|
442 | else
|
---|
443 | {
|
---|
444 | // save I2C bitrate
|
---|
445 | #ifdef TWBR
|
---|
446 | uint8_t twbrbackup = TWBR;
|
---|
447 | TWBR = 12; // upgrade to 400KHz!
|
---|
448 | #endif
|
---|
449 | //Serial.println(TWBR, DEC);
|
---|
450 | //Serial.println(TWSR & 0x3, DEC);
|
---|
451 |
|
---|
452 | // I2C
|
---|
453 | uint8_t data[17] = { 0x40, };
|
---|
454 | for (uint16_t i = 0; i < (SSD1306_LCDWIDTH*SSD1306_LCDHEIGHT / 8); i+=16) {
|
---|
455 | // send a bunch of data in one xmission
|
---|
456 | memcpy(&data[1], &buffer[i], 16);
|
---|
457 | i2c_write(&lcd->i2c, lcd->_i2caddr, data, sizeof(data), 1);
|
---|
458 | }
|
---|
459 | #ifdef TWBR
|
---|
460 | TWBR = twbrbackup;
|
---|
461 | #endif
|
---|
462 | }
|
---|
463 | }
|
---|
464 |
|
---|
465 | // clear everything
|
---|
466 | void lcd_clearDisplay(LCD_Handler_t *lcd) {
|
---|
467 | memset(buffer, 0, (SSD1306_LCDWIDTH*SSD1306_LCDHEIGHT / 8));
|
---|
468 | }
|
---|
469 |
|
---|
470 | void lcd_fastSPIwrite(LCD_Handler_t *lcd, uint8_t d)
|
---|
471 | {
|
---|
472 | if (lcd->hwSPI) {
|
---|
473 | spi_master_write(&lcd->spi, d);
|
---|
474 | }
|
---|
475 | else {
|
---|
476 | for (uint8_t bit = 0x80; bit; bit >>= 1) {
|
---|
477 | gpio_write(&lcd->sclk, LOW);
|
---|
478 | if (d & bit) gpio_write(&lcd->sid, HIGH);
|
---|
479 | else gpio_write(&lcd->sid, LOW);
|
---|
480 | gpio_write(&lcd->sclk, HIGH);
|
---|
481 | }
|
---|
482 | }
|
---|
483 | }
|
---|
484 |
|
---|
485 | void lcd_drawFastHLine(LCD_Handler_t *lcd, int16_t x, int16_t y, int16_t w, uint16_t color) {
|
---|
486 | bool_t bSwap = false;
|
---|
487 | switch (lcd->rotation) {
|
---|
488 | case 0:
|
---|
489 | // 0 degree rotation, do nothing
|
---|
490 | break;
|
---|
491 | case 1:
|
---|
492 | // 90 degree rotation, swap x & y for rotation, then invert x
|
---|
493 | bSwap = true;
|
---|
494 | lcd_swap(x, y);
|
---|
495 | x = lcd->_width - x - 1;
|
---|
496 | break;
|
---|
497 | case 2:
|
---|
498 | // 180 degree rotation, invert x and y - then shift y around for height.
|
---|
499 | x = lcd->_width - x - 1;
|
---|
500 | y = lcd->_height - y - 1;
|
---|
501 | x -= (w - 1);
|
---|
502 | break;
|
---|
503 | case 3:
|
---|
504 | // 270 degree rotation, swap x & y for rotation, then invert y and adjust y for w (not to become h)
|
---|
505 | bSwap = true;
|
---|
506 | lcd_swap(x, y);
|
---|
507 | y = lcd->_height - y - 1;
|
---|
508 | y -= (w - 1);
|
---|
509 | break;
|
---|
510 | }
|
---|
511 |
|
---|
512 | if (bSwap) {
|
---|
513 | lcd_drawFastVLineInternal(lcd, x, y, w, color);
|
---|
514 | }
|
---|
515 | else {
|
---|
516 | lcd_drawFastHLineInternal(lcd, x, y, w, color);
|
---|
517 | }
|
---|
518 | }
|
---|
519 |
|
---|
520 | void lcd_drawFastHLineInternal(LCD_Handler_t *lcd, int16_t x, int16_t y, int16_t w, uint16_t color) {
|
---|
521 | // Do bounds/limit checks
|
---|
522 | if (y < 0 || y >= lcd->_height) { return; }
|
---|
523 |
|
---|
524 | // make sure we don't try to draw below 0
|
---|
525 | if (x < 0) {
|
---|
526 | w += x;
|
---|
527 | x = 0;
|
---|
528 | }
|
---|
529 |
|
---|
530 | // make sure we don't go off the edge of the display
|
---|
531 | if ((x + w) > lcd->_width) {
|
---|
532 | w = (lcd->_width - x);
|
---|
533 | }
|
---|
534 |
|
---|
535 | // if our width is now negative, punt
|
---|
536 | if (w <= 0) { return; }
|
---|
537 |
|
---|
538 | // set up the pointer for movement through the buffer
|
---|
539 | register uint8_t *pBuf = buffer;
|
---|
540 | // adjust the buffer pointer for the current row
|
---|
541 | pBuf += ((y / 8) * SSD1306_LCDWIDTH);
|
---|
542 | // and offset x columns in
|
---|
543 | pBuf += x;
|
---|
544 |
|
---|
545 | register uint8_t mask = 1 << (y & 7);
|
---|
546 |
|
---|
547 | switch (color)
|
---|
548 | {
|
---|
549 | case WHITE: while (w--) { *pBuf++ |= mask; }; break;
|
---|
550 | case BLACK: mask = ~mask; while (w--) { *pBuf++ &= mask; }; break;
|
---|
551 | case INVERSE: while (w--) { *pBuf++ ^= mask; }; break;
|
---|
552 | }
|
---|
553 | }
|
---|
554 |
|
---|
555 | void lcd_drawFastVLine(LCD_Handler_t *lcd, int16_t x, int16_t y, int16_t h, uint16_t color) {
|
---|
556 | bool_t bSwap = false;
|
---|
557 | switch (lcd->rotation) {
|
---|
558 | case 0:
|
---|
559 | break;
|
---|
560 | case 1:
|
---|
561 | // 90 degree rotation, swap x & y for rotation, then invert x and adjust x for h (now to become w)
|
---|
562 | bSwap = true;
|
---|
563 | lcd_swap(x, y);
|
---|
564 | x = lcd->_width - x - 1;
|
---|
565 | x -= (h - 1);
|
---|
566 | break;
|
---|
567 | case 2:
|
---|
568 | // 180 degree rotation, invert x and y - then shift y around for height.
|
---|
569 | x = lcd->_width - x - 1;
|
---|
570 | y = lcd->_height - y - 1;
|
---|
571 | y -= (h - 1);
|
---|
572 | break;
|
---|
573 | case 3:
|
---|
574 | // 270 degree rotation, swap x & y for rotation, then invert y
|
---|
575 | bSwap = true;
|
---|
576 | lcd_swap(x, y);
|
---|
577 | y = lcd->_height - y - 1;
|
---|
578 | break;
|
---|
579 | }
|
---|
580 |
|
---|
581 | if (bSwap) {
|
---|
582 | lcd_drawFastHLineInternal(lcd, x, y, h, color);
|
---|
583 | }
|
---|
584 | else {
|
---|
585 | lcd_drawFastVLineInternal(lcd, x, y, h, color);
|
---|
586 | }
|
---|
587 | }
|
---|
588 |
|
---|
589 |
|
---|
590 | void lcd_drawFastVLineInternal(LCD_Handler_t *lcd, int16_t x, int16_t __y, int16_t __h, uint16_t color) {
|
---|
591 |
|
---|
592 | // do nothing if we're off the left or right side of the screen
|
---|
593 | if (x < 0 || x >= lcd->_width) { return; }
|
---|
594 |
|
---|
595 | // make sure we don't try to draw below 0
|
---|
596 | if (__y < 0) {
|
---|
597 | // __y is negative, this will subtract enough from __h to account for __y being 0
|
---|
598 | __h += __y;
|
---|
599 | __y = 0;
|
---|
600 |
|
---|
601 | }
|
---|
602 |
|
---|
603 | // make sure we don't go past the height of the display
|
---|
604 | if ((__y + __h) > lcd->_height) {
|
---|
605 | __h = (lcd->_height - __y);
|
---|
606 | }
|
---|
607 |
|
---|
608 | // if our height is now negative, punt
|
---|
609 | if (__h <= 0) {
|
---|
610 | return;
|
---|
611 | }
|
---|
612 |
|
---|
613 | // this display doesn't need ints for coordinates, use local byte registers for faster juggling
|
---|
614 | register uint8_t y = __y;
|
---|
615 | register uint8_t h = __h;
|
---|
616 |
|
---|
617 |
|
---|
618 | // set up the pointer for fast movement through the buffer
|
---|
619 | register uint8_t *pBuf = buffer;
|
---|
620 | // adjust the buffer pointer for the current row
|
---|
621 | pBuf += ((y / 8) * SSD1306_LCDWIDTH);
|
---|
622 | // and offset x columns in
|
---|
623 | pBuf += x;
|
---|
624 |
|
---|
625 | // do the first partial byte, if necessary - this requires some masking
|
---|
626 | register uint8_t mod = (y & 7);
|
---|
627 | if (mod) {
|
---|
628 | // mask off the high n bits we want to set
|
---|
629 | mod = 8 - mod;
|
---|
630 |
|
---|
631 | // note - lookup table results in a nearly 10% performance improvement in fill* functions
|
---|
632 | // register uint8_t mask = ~(0xFF >> (mod));
|
---|
633 | static uint8_t premask[8] = { 0x00, 0x80, 0xC0, 0xE0, 0xF0, 0xF8, 0xFC, 0xFE };
|
---|
634 | register uint8_t mask = premask[mod];
|
---|
635 |
|
---|
636 | // adjust the mask if we're not going to reach the end of this byte
|
---|
637 | if (h < mod) {
|
---|
638 | mask &= (0XFF >> (mod - h));
|
---|
639 | }
|
---|
640 |
|
---|
641 | switch (color)
|
---|
642 | {
|
---|
643 | case WHITE: *pBuf |= mask; break;
|
---|
644 | case BLACK: *pBuf &= ~mask; break;
|
---|
645 | case INVERSE: *pBuf ^= mask; break;
|
---|
646 | }
|
---|
647 |
|
---|
648 | // fast exit if we're done here!
|
---|
649 | if (h < mod) { return; }
|
---|
650 |
|
---|
651 | h -= mod;
|
---|
652 |
|
---|
653 | pBuf += SSD1306_LCDWIDTH;
|
---|
654 | }
|
---|
655 |
|
---|
656 | // write solid bytes while we can - effectively doing 8 rows at a time
|
---|
657 | if (h >= 8) {
|
---|
658 | if (color == INVERSE) { // separate copy of the code so we don't impact performance of the black/white write version with an extra comparison per loop
|
---|
659 | do {
|
---|
660 | *pBuf = ~(*pBuf);
|
---|
661 |
|
---|
662 | // adjust the buffer forward 8 rows worth of data
|
---|
663 | pBuf += SSD1306_LCDWIDTH;
|
---|
664 |
|
---|
665 | // adjust h & y (there's got to be a faster way for me to do this, but this should still help a fair bit for now)
|
---|
666 | h -= 8;
|
---|
667 | } while (h >= 8);
|
---|
668 | }
|
---|
669 | else {
|
---|
670 | // store a local value to work with
|
---|
671 | register uint8_t val = (color == WHITE) ? 255 : 0;
|
---|
672 |
|
---|
673 | do {
|
---|
674 | // write our value in
|
---|
675 | *pBuf = val;
|
---|
676 |
|
---|
677 | // adjust the buffer forward 8 rows worth of data
|
---|
678 | pBuf += SSD1306_LCDWIDTH;
|
---|
679 |
|
---|
680 | // adjust h & y (there's got to be a faster way for me to do this, but this should still help a fair bit for now)
|
---|
681 | h -= 8;
|
---|
682 | } while (h >= 8);
|
---|
683 | }
|
---|
684 | }
|
---|
685 |
|
---|
686 | // now do the final partial byte, if necessary
|
---|
687 | if (h) {
|
---|
688 | mod = h & 7;
|
---|
689 | // this time we want to mask the low bits of the byte, vs the high bits we did above
|
---|
690 | // register uint8_t mask = (1 << mod) - 1;
|
---|
691 | // note - lookup table results in a nearly 10% performance improvement in fill* functions
|
---|
692 | static uint8_t postmask[8] = { 0x00, 0x01, 0x03, 0x07, 0x0F, 0x1F, 0x3F, 0x7F };
|
---|
693 | register uint8_t mask = postmask[mod];
|
---|
694 | switch (color)
|
---|
695 | {
|
---|
696 | case WHITE: *pBuf |= mask; break;
|
---|
697 | case BLACK: *pBuf &= ~mask; break;
|
---|
698 | case INVERSE: *pBuf ^= mask; break;
|
---|
699 | }
|
---|
700 | }
|
---|
701 | }
|
---|