Michel2/Adafruit_SSD1306
1
0
Fork 0
mirror of https://github.com/adafruit/Adafruit_SSD1306.git synced 2026-07-27 20:05:50 +00:00
Code Issues Releases Activity

Fixed double writes; tested on 128x64 and 128x32 SPI displays

Browse Source
This commit is contained in:
Phillip Burgess
2014-01-15 20:46:57 -08:00
parent 3b9f481629
commit 9347d62332
2 changed files with 9 additions and 27 deletions
Download Patch File Download Diff File Expand all files Collapse all files
Adafruit_SSD1306.cpp
+7 -24
View File
@@ -383,9 +383,13 @@ void Adafruit_SSD1306::ssd1306_data(uint8_t c) {
}
void Adafruit_SSD1306::display(void) {
ssd1306_command(SSD1306_SETLOWCOLUMN | 0x0); // low col = 0
ssd1306_command(SSD1306_SETHIGHCOLUMN | 0x0); // hi col = 0
ssd1306_command(SSD1306_SETSTARTLINE | 0x0); // line #0
ssd1306_command(SSD1306_COLUMNADDR);
ssd1306_command(0); // Column start address (0 = reset)
ssd1306_command(127); // Column end address (127 = reset)
ssd1306_command(SSD1306_PAGEADDR);
ssd1306_command(0); // Page start address (0 = reset)
ssd1306_command((SSD1306_LCDHEIGHT == 64) ? 7 : 3); // Page end address
if (sid != -1)
{
@@ -398,13 +402,6 @@ void Adafruit_SSD1306::display(void) {
fastSPIwrite(buffer[i]);
//ssd1306_data(buffer[i]);
}
// i wonder why we have to do this (check datasheet)
if (SSD1306_LCDHEIGHT == 32) {
for (uint16_t i=0; i<(SSD1306_LCDWIDTH*SSD1306_LCDHEIGHT/8); i++) {
//ssd1306_data(0);
fastSPIwrite(0);
}
}
*csport |= cspinmask;
}
else
@@ -428,20 +425,6 @@ void Adafruit_SSD1306::display(void) {
i--;
Wire.endTransmission();
}
// i wonder why we have to do this (check datasheet)
if (SSD1306_LCDHEIGHT == 32) {
for (uint16_t i=0; i<(SSD1306_LCDWIDTH*SSD1306_LCDHEIGHT/8); i++) {
// send a bunch of data in one xmission
Wire.beginTransmission(_i2caddr);
Wire.write(0x40);
for (uint8_t x=0; x<16; x++) {
Wire.write((uint8_t)0x00);
i++;
}
i--;
Wire.endTransmission();
}
}
TWBR = twbrbackup;
}
}
Adafruit_SSD1306.h
+2 -3
View File
@@ -42,9 +42,6 @@ All text above, and the splash screen must be included in any redistribution
SSD1306_128_32 128x32 pixel display
You also need to set the LCDWIDTH and LCDHEIGHT defines to an
appropriate size
-----------------------------------------------------------------------*/
#define SSD1306_128_64
// #define SSD1306_128_32
@@ -90,6 +87,8 @@ All text above, and the splash screen must be included in any redistribution
#define SSD1306_SETSTARTLINE 0x40
#define SSD1306_MEMORYMODE 0x20
#define SSD1306_COLUMNADDR 0x21
#define SSD1306_PAGEADDR 0x22
#define SSD1306_COMSCANINC 0xC0
#define SSD1306_COMSCANDEC 0xC8