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Code Issues Releases Wiki Activity

Cleaned up the SSD1306 code and added support for 128x32 sized displays

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Added defines to config.h and config-user.h.example to support this
This commit is contained in:
Peter Edwards
2018-05-05 09:25:58 +02:00
parent 1a7aa7bd2e
commit 9b12347dc9
3 changed files with 69 additions and 34 deletions
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config-user.h.example
+4
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@@ -15,6 +15,10 @@
// #define LCD_USE_SSD1306_OLED_MODULE
// #define LCD_I2C_ADDR 0x3C // I2C address for the OLED
// #define LCD_SSD1306_BIG_FONTS // define this for ... bigger fonts...
// choose one of these depending on your display
// #define LCD_SSD1306_128x64
// #define LCD_SSD1306_128x32
// #define LCD_USE_SSD131X_OLED_MODULE
// #define LCD_I2C_ADDR 0x3C // I2C address for the OLED
config.h
+6
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@@ -9,6 +9,12 @@
#error Ether no or multiple LCD types defined! Have you created your config-user.h file?
#endif
#if defined(LCD_USE_SSD1306_OLED_MODULE)
#if defined(LCD_SSD1306_128x64) + defined(LCD_SSD1306_128x32) != 1
#error When using the SSD1306 module, define EITHER: LCD_SSD1306_128x64 or LCD_SSD1306_128x32 depending on your module type
#endif
#endif
#if defined(TAPUINO_LANGUAGE_EN) + defined(TAPUINO_LANGUAGE_ES) + defined(TAPUINO_LANGUAGE_IT) + defined(TAPUINO_LANGUAGE_TR) + defined(TAPUINO_LANGUAGE_DE) != 1
#error Either no or multiple languages defined! Have you created your config-user.h file?
#endif
disp_oled_ssd1306.c
+57 -32
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@@ -22,38 +22,62 @@ void ssd1306_send_command_start(void);
void ssd1306_send_command(uint8_t command);
void ssd1306_send_data_start(void);
#define SSD1306_DISPLAYOFF 0xAE
#define SSD1306_SETDISPLAYCLOCKDIV 0xD5
#define SSD1306_SETMULTIPLEX 0xA8
#define SSD1306_SETDISPLAYOFFSET 0xD3
#define SSD1306_SETSTARTLINE 0x40
#define SSD1306_CHARGEPUMP 0x8D
#define SSD1306_MEMORYMODE 0x20
#define SSD1306_SEGREMAP 0xA0
#define SSD1306_COMSCANDEC 0xC8
#define SSD1306_SETCOMPINS 0xDA
#define SSD1306_SETCONTRAST 0x81
#define SSD1306_SETPRECHARGE 0xD9
#define SSD1306_SETVCOMDETECT 0xDB
#define SSD1306_DISPLAYALLON_RESUME 0xA4
#define SSD1306_NORMALDISPLAY 0xA6
#define SSD1306_DISPLAYON 0xAF
#define SSD1306_SETSTARTPAGE 0xB0
#define SSD1306_LOWCOLUMNADDR 0x00
#define SSD1306_HIGHCOLUMNADDR 0x10
// Init Sequence
const uint8_t ssd1306_init_sequence [] PROGMEM = {
0xAE, // Display OFF (sleep mode)
0xD5, // --set display clock divide ratio/oscillator frequency
0x80, // --set divide ratio
0xA8, 0x3F, // Set multiplex ratio (1 to 64)
0xD3, 0x00, // Set display offset. 00 = no offset
0x40, // --set start line address
0x8D, 0x14, // Set DC-DC enable
0x20, 0b00, // Set Memory Addressing Mode
SSD1306_DISPLAYOFF, // 0xAE Display OFF (sleep mode)
SSD1306_SETDISPLAYCLOCKDIV, 0x80, // 0xD5 Set display clock divide ratio/oscillator frequency
#if defined LCD_SSD1306_128x64
SSD1306_SETMULTIPLEX, 0x3F, // 0xA8 Set multiplex ratio (1 to 64)
#elif defined LCD_SSD1306_128x32
SSD1306_SETMULTIPLEX, 0x1F, // 0xA8 Set multiplex ratio (1 to 64)
#endif
SSD1306_SETDISPLAYOFFSET, 0x00, // 0xD3 Set display offset. 00 = no offset
SSD1306_SETSTARTLINE | 0x00, // 0x40 Set start line address
SSD1306_CHARGEPUMP, 0x14, // 0x8D Set DC-DC enable: internal VCC
SSD1306_MEMORYMODE, 0x10, // 0x20 Set Memory Addressing Mode
// 00=Horizontal Addressing Mode; 01=Vertical Addressing Mode;
// 10=Page Addressing Mode (RESET); 11=Invalid
0xA1, // Set Segment Re-map. A0=address mapped; A1=address 127 mapped.
0xC8, // Set COM Output Scan Direction
SSD1306_SEGREMAP | 0x01, // 0xA0 Set Segment Re-map. A0=address mapped; A1=address 127 mapped.
SSD1306_COMSCANDEC, // 0xC8 Set COM Output Scan Direction - descending
#if defined LCD_SSD1306_128x64
#ifdef LCD_SSD1306_BIG_FONTS
0xDA, 0x02, // Set com pins hardware configuration
SSD1306_SETCOMPINS, 0x02, // 0xDA Set com pins hardware configuration
#else
0xDA, 0x12, // Set com pins hardware configuration
SSD1306_SETCOMPINS, 0x12, // 0xDA Set com pins hardware configuration
#endif
#elif defined LCD_SSD1306_128x32
SSD1306_SETCOMPINS, 0x02, // 0xDA Set com pins hardware configuration
#endif
0x81, 0x3F, // Set contrast control register
0xD9, 0x22, // Set pre-charge period
0xDB, // --set vcomh
0x20, // 0x20,0.77xVcc
0xA4, // Output RAM to Display
// 0xA4=Output follows RAM content; 0xA5,Output ignores RAM content
0xA6, // Set display mode. A6=Normal; A7=Inverse
0xB0, // Set Page Start Address for Page Addressing Mode, 0-7
0x00, // ---set low column address
0x10, // ---set high column address
0xAF // Display ON in normal mode
SSD1306_SETCONTRAST, 0x3F, // 0x81 Set contrast control register
SSD1306_SETPRECHARGE, 0x22, // 0xD9 Set pre-charge period
SSD1306_SETVCOMDETECT, 0x20, // 0xDB Set vcomh 0x20,0.77xVcc
SSD1306_DISPLAYALLON_RESUME, // 0xA4 Output RAM to Display 0xA4=Output follows RAM content; 0xA5,Output ignores RAM content
SSD1306_NORMALDISPLAY, // 0xA6 Set display mode. A6=Normal; A7=Inverse
SSD1306_SETSTARTPAGE | 0x00, // Set Page Start Address for Page Addressing Mode, 0-7
SSD1306_LOWCOLUMNADDR, // ---set low column address
SSD1306_HIGHCOLUMNADDR, // ---set high column address
SSD1306_DISPLAYON // 0xAF Display ON in normal mode
};
@@ -100,17 +124,18 @@ void write_raw(uint8_t value, uint8_t cursor) {
uint8_t i, v, col;
uint8_t c = value - 32;
col = _col << 3; // convert to pixel
col = _col << 3; // convert to pixel: character column * 8
ssd1306_send_command_start();
i2c_write(0xb0 + _row);
i2c_write((col & 0x0f) | 0x00);
i2c_write(((col & 0xf0) >> 4) | 0x10);
i2c_write(SSD1306_SETSTARTPAGE + _row);
i2c_write((col & 0x0f) | SSD1306_LOWCOLUMNADDR);
i2c_write(((col & 0xf0) >> 4) | SSD1306_HIGHCOLUMNADDR);
ssd1306_send_data_start();
// write 1 column of the character per iteration
for (i = 0; i < 8; i++)
{
v = pgm_read_byte(&font8x8[c * 8 + i]);
// add underline for cursor
// add underline for cursor: last pixel in the column
if (cursor) v |= 0x80;
i2c_write(v);
}
@@ -164,9 +189,9 @@ void ssd1306_fillscreen(uint8_t fill) {
for (m = 0; m < 8; m++)
{
ssd1306_send_command_start();
i2c_write(0xb0 + m); // page0 - page7
i2c_write(0x00); // low column start address
i2c_write(0x10); // high column start address
i2c_write(SSD1306_SETSTARTPAGE + m); // page0 - page7
i2c_write(SSD1306_LOWCOLUMNADDR); // low column start address
i2c_write(SSD1306_HIGHCOLUMNADDR); // high column start address
ssd1306_send_data_start();
for (n = 0; n < 128; n++)
{