SSD1306 OLED display driver  1.5.0
This library is developed to control SSD1306/SSD1331 RGB i2c/spi OLED displays and spi PCD8544 LED display
oled_ssd1306.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 "oled_ssd1306.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 static const uint8_t PROGMEM s_oled128x64_initData[] =
34 {
35  SSD1306_DISPLAYOFF, // display off
36  SSD1306_MEMORYMODE, HORIZONTAL_ADDRESSING_MODE, // Page Addressing mode
37  SSD1306_COMSCANDEC, // Scan from 127 to 0 (Reverse scan)
38  SSD1306_SETSTARTLINE | 0x00, // First line to start scanning from
39  SSD1306_SETCONTRAST, 0x7F, // contast value to 0x7F according to datasheet
40  SSD1306_SEGREMAP | 0x01, // Use reverse mapping. 0x00 - is normal mapping
41  SSD1306_NORMALDISPLAY,
42  SSD1306_SETMULTIPLEX, 63, // Reset to default MUX. See datasheet
43  SSD1306_SETDISPLAYOFFSET, 0x00, // no offset
44  SSD1306_SETDISPLAYCLOCKDIV, 0x80,// set to default ratio/osc frequency
45  SSD1306_SETPRECHARGE, 0x22, // switch precharge to 0x22 // 0xF1
46  SSD1306_SETCOMPINS, 0x12, // set divide ratio
47  SSD1306_SETVCOMDETECT, 0x20, // vcom deselect to 0x20 // 0x40
48  SSD1306_CHARGEPUMP, 0x14, // Enable charge pump
49  SSD1306_DISPLAYALLON_RESUME,
50  SSD1306_DISPLAYON
51 };
52 
53 static const uint8_t PROGMEM s_oled128x32_initData[] =
54 {
55  SSD1306_DISPLAYOFF, // display off
56  SSD1306_SETDISPLAYCLOCKDIV, 0x80,
57  SSD1306_SETMULTIPLEX, 31,
58  SSD1306_SETDISPLAYOFFSET, 0x00, // --no offset
59  SSD1306_SETSTARTLINE,
60  SSD1306_CHARGEPUMP, 0x14, // 0x10
61  SSD1306_SEGREMAP | 0x01, // Reverse mapping
62  SSD1306_COMSCANDEC,
63  SSD1306_SETCOMPINS, 0x02,
64  SSD1306_SETCONTRAST, 0x7F, // contast value
65  SSD1306_SETPRECHARGE, 0x22, // 0x1F
66  SSD1306_SETVCOMDETECT, 0x40,
67  SSD1306_MEMORYMODE, HORIZONTAL_ADDRESSING_MODE,
68  SSD1306_DISPLAYALLON_RESUME,
69  SSD1306_NORMALDISPLAY,
70  SSD1306_DISPLAYON
71 };
72 
73 static void ssd1306_setBlock(uint8_t x, uint8_t y, uint8_t w)
74 {
76  ssd1306_sendByte(SSD1306_COLUMNADDR);
78  ssd1306_sendByte(w ? (x + w - 1) : (s_displayWidth - 1));
79  ssd1306_sendByte(SSD1306_PAGEADDR);
83  {
85  }
86  else
87  {
90  }
91 }
92 
93 static void ssd1306_nextPage(void)
94 {
95 }
96 
97 /*
98 // We do not need this function, since ssd1306 library works in Horizontal Addressing mode
99 static void ssd1306_setPos(uint8_t x, uint8_t y)
100 {
101  ssd1306_setBlock(0,0,s_displayWidth);
102  ssd1306_commandStart();
103  ssd1306_sendByte(SSD1306_SETPAGE | y);
104  ssd1306_sendByte((x>>4) | SSD1306_SETHIGHCOLUMN);
105  ssd1306_sendByte((x & 0x0f) | SSD1306_SETLOWCOLUMN);
106  ssd1306_endTransmission();
107 }
108 */
109 
111 // I2C SSD1306 128x64
113 
115 {
117 }
118 
119 
121 {
123  s_displayHeight = 64;
124  s_displayWidth = 128;
125  ssd1306_setRamBlock = ssd1306_setBlock;
126  ssd1306_nextRamPage = ssd1306_nextPage;
128  for( uint8_t i=0; i<sizeof(s_oled128x64_initData); i++)
129  {
130  ssd1306_sendCommand(pgm_read_byte(&s_oled128x64_initData[i]));
131  }
132 }
133 
135 {
136  ssd1306_i2cInit();
138 }
139 
140 void ssd1306_128x64_i2c_initEx(int8_t scl, int8_t sda, int8_t sa)
141 {
142  ssd1306_i2cInitEx(scl, sda, sa);
144 }
145 
147 // SPI SSD1306 128x64
149 
150 void ssd1306_128x64_spi_init(int8_t rstPin, int8_t cesPin, int8_t dcPin)
151 {
152  if (rstPin >=0)
153  {
154  pinMode(rstPin, OUTPUT);
155  digitalWrite(rstPin, HIGH);
156  /* Wait at least 1ms after VCC is up for LCD */
157  delay(1);
158  /* Perform reset operation of LCD display */
159  digitalWrite(rstPin, LOW);
160  delay(10);
161  digitalWrite(rstPin, HIGH);
162  }
163  ssd1306_spiInit(cesPin, dcPin);
165 }
166 
168 // I2C SSD1306 128x32
170 
172 {
174  s_displayHeight = 32;
175  s_displayWidth = 128;
176  ssd1306_setRamBlock = ssd1306_setBlock;
177  ssd1306_nextRamPage = ssd1306_nextPage;
179  for( uint8_t i=0; i < sizeof(s_oled128x32_initData); i++)
180  {
181  ssd1306_sendCommand(pgm_read_byte(&s_oled128x32_initData[i]));
182  }
183 }
184 
185 
187 {
188  ssd1306_i2cInit();
190 }
uint8_t ssd1306_dcQuickSwitch
void ssd1306_i2cInit(void)
void ssd1306_128x32_init(void)
Inits 128x32 OLED display (based on ssd1306 controller).
Definition: oled_ssd1306.c:171
void ssd1306_128x64_spi_init(int8_t rstPin, int8_t cesPin, int8_t dcPin)
Inits 128x64 OLED display over spi (based on SSD1306 controller).
Definition: oled_ssd1306.c:150
uint8_t s_displayWidth
void(* ssd1306_dataStart)(void)
void ssd1306_spiDataMode(uint8_t mode)
Definition: ssd1306_spi.c:65
void ssd1306_128x64_init()
Inits 128x64 OLED display (based on SSD1306 controller).
Definition: oled_ssd1306.c:120
void ssd1306_128x64_i2c_initEx(int8_t scl, int8_t sda, int8_t sa)
Inits 128x64 OLED display over i2c (based on SSD1306 controller).
Definition: oled_ssd1306.c:140
void ssd1306_spiInit(int8_t cesPin, int8_t dcPin)
Definition: ssd1306_spi.c:39
void(* ssd1306_endTransmission)(void)
uint8_t g_lcd_type
void ssd1306_128x32_i2c_init(void)
Inits 128x32 OLED display over i2c (based on SSD1306 controller).
Definition: oled_ssd1306.c:186
void ssd1306_128x64_i2c_init(void)
Inits 128x64 OLED display over i2c (based on SSD1306 controller).
Definition: oled_ssd1306.c:134
void ssd1306_i2cInitEx(int8_t scl, int8_t sda, int8_t sa)
void(* ssd1306_sendByte)(uint8_t data)
void ssd1306_sendCommand(uint8_t command)
void(* ssd1306_commandStart)(void)
void(* ssd1306_setRamBlock)(uint8_t x, uint8_t y, uint8_t w)
Definition: lcd_common.c:29
uint8_t s_displayHeight
void(* ssd1306_nextRamPage)(void)
Definition: lcd_common.c:30
void ssd1306_init(void) __attribute__((deprecated))
Inits 128x64 OLED display over i2c (based on SSD1306 controller).
Definition: oled_ssd1306.c:114
void(* ssd1306_sendPixels)(uint8_t data)
Definition: lcd_common.c:31