SSD1306 OLED display driver  1.4.0
This library is developed to control SSD1306 i2c/spi OLED display
ssd1306_128x64.c
1 /*
2  MIT License
3 
4  Copyright (c) 2017-2018, Alexey Dynda
5 
6  Permission is hereby granted, free of charge, to any person obtaining a copy
7  of this software and associated documentation files (the "Software"), to deal
8  in the Software without restriction, including without limitation the rights
9  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10  copies of the Software, and to permit persons to whom the Software is
11  furnished to do so, subject to the following conditions:
12 
13  The above copyright notice and this permission notice shall be included in all
14  copies or substantial portions of the Software.
15 
16  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
22  SOFTWARE.
23 */
24 
25 #include "ssd1306_128x64.h"
26 #include "lcd_common.h"
27 #include "ssd1306_commands.h"
28 #include "intf/ssd1306_interface.h"
29 #include "i2c/ssd1306_i2c.h"
30 #include "spi/ssd1306_spi.h"
31 #include "hal/io.h"
32 
33 #include <stdlib.h>
34 
35 static const uint8_t PROGMEM s_oled128x64_initData[] =
36 {
37  SSD1306_DISPLAYOFF, // display off
38  SSD1306_MEMORYMODE, HORIZONTAL_ADDRESSING_MODE, // Page Addressing mode
39  SSD1306_COMSCANDEC, // Scan from 127 to 0 (Reverse scan)
40  SSD1306_SETSTARTLINE | 0x00, // First line to start scanning from
41  SSD1306_SETCONTRAST, 0x7F, // contast value to 0x7F according to datasheet
42  SSD1306_SEGREMAP | 0x01, // Use reverse mapping. 0x00 - is normal mapping
43  SSD1306_NORMALDISPLAY,
44  SSD1306_SETMULTIPLEX, 63, // Reset to default MUX. See datasheet
45  SSD1306_SETDISPLAYOFFSET, 0x00, // no offset
46  SSD1306_SETDISPLAYCLOCKDIV, 0x80,// set to default ratio/osc frequency
47  SSD1306_SETPRECHARGE, 0x22, // switch precharge to 0x22 // 0xF1
48  SSD1306_SETCOMPINS, 0x12, // set divide ratio
49  SSD1306_SETVCOMDETECT, 0x20, // vcom deselect to 0x20 // 0x40
50  SSD1306_CHARGEPUMP, 0x14, // Enable charge pump
51  SSD1306_DISPLAYALLON_RESUME,
52  SSD1306_DISPLAYON
53 };
54 
55 static void ssd1306_setBlock(uint8_t x, uint8_t y, uint8_t w)
56 {
58  ssd1306_sendByte(SSD1306_COLUMNADDR);
60  ssd1306_sendByte(w ? (x + w - 1) : (s_displayWidth - 1));
61  ssd1306_sendByte(SSD1306_PAGEADDR);
65 }
66 
67 static void ssd1306_nextPage()
68 {
69 }
70 
71 /*
72 // We do not need this function, since ssd1306 library works in Horizontal Addressing mode
73 static void ssd1306_setPos(uint8_t x, uint8_t y)
74 {
75  ssd1306_setBlock(0,0,s_displayWidth);
76  ssd1306_commandStart();
77  ssd1306_sendByte(SSD1306_SETPAGE | y);
78  ssd1306_sendByte((x>>4) | SSD1306_SETHIGHCOLUMN);
79  ssd1306_sendByte((x & 0x0f) | SSD1306_SETLOWCOLUMN);
80  ssd1306_endTransmission();
81 }
82 */
83 
85 {
87 }
88 
89 
91 {
93  s_displayHeight = 64;
94  s_displayWidth = 128;
95  ssd1306_setRamBlock = ssd1306_setBlock;
96  ssd1306_nextRamPage = ssd1306_nextPage;
97  // ssd1306 library doesn't use setRamPos intended for Page Addressing mode
98  ssd1306_setRamPos = NULL; //ssd1306_setPos;
99  for( uint8_t i=0; i<sizeof(s_oled128x64_initData); i++)
100  {
101  ssd1306_sendCommand(pgm_read_byte(&s_oled128x64_initData[i]));
102  }
103 }
104 
106 {
107  ssd1306_i2cInit();
109 }
110 
111 void ssd1306_128x64_spi_init(int8_t rstPin, int8_t cesPin, int8_t dcPin)
112 {
113  if (rstPin >=0)
114  {
115  pinMode(rstPin, OUTPUT);
116  digitalWrite(rstPin, HIGH);
117  /* Wait at least 1ms after VCC is up for LCD */
118  delay(1);
119  /* Perform reset operation of LCD display */
120  digitalWrite(rstPin, LOW);
121  delay(10);
122  digitalWrite(rstPin, HIGH);
123  }
124  ssd1306_spiInit(cesPin, dcPin);
126 }
void ssd1306_128x64_spi_init(int8_t rstPin, int8_t cesPin, int8_t dcPin)
Inits 128x64 OLED display over spi (based on SSD1306 controller).
void(* ssd1306_sendByte)(uint8_t data)
void(* ssd1306_endTransmission)()
void(* ssd1306_nextRamPage)()
void ssd1306_128x64_init()
Inits 128x64 OLED display (based on SSD1306 controller).
void ssd1306_128x64_i2c_init()
Inits 128x64 OLED display over i2c (based on SSD1306 controller).
void ssd1306_sendCommand(uint8_t command)
void ssd1306_init()
Inits 128x64 OLED display over i2c (based on SSD1306 controller).
void ssd1306_i2cInit()
void(* ssd1306_commandStart)()
uint8_t g_lcd_type
Definition: ssd1306.c:38
uint8_t s_displayHeight
Definition: ssd1306.c:36
void(* ssd1306_setRamBlock)(uint8_t x, uint8_t y, uint8_t w)
void(* ssd1306_setRamPos)(uint8_t x, uint8_t y)
void ssd1306_spiInit(int8_t cesPin, int8_t dcPin)
Definition: ssd1306_spi.cpp:37
uint8_t s_displayWidth
Definition: ssd1306.c:37