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Code Issues Releases Activity

Incorporate edwinm's dim() method

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This commit is contained in:
Phillip Burgess
2014-02-08 19:28:49 -08:00
parent 9347d62332
commit ef6b74eafe
2 changed files with 26 additions and 2 deletions
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Adafruit_SSD1306.cpp
+22
View File
@@ -143,6 +143,7 @@ Adafruit_GFX(SSD1306_LCDWIDTH, SSD1306_LCDHEIGHT) {
void Adafruit_SSD1306::begin(uint8_t vccstate, uint8_t i2caddr) {
_vccstate = vccstate;
_i2caddr = i2caddr;
// set pin directions
@@ -357,6 +358,27 @@ void Adafruit_SSD1306::stopscroll(void){
ssd1306_command(SSD1306_DEACTIVATE_SCROLL);
}
// Dim the display
// dim = true: display is dimmed
// dim = false: display is normal
void Adafruit_SSD1306::dim(boolean dim) {
uint8_t contrast;
if (dim) {
contrast = 0; // Dimmed display
} else {
if (_vccstate == SSD1306_EXTERNALVCC) {
contrast = 0x9F;
} else {
contrast = 0xCF;
}
}
// the range of contrast to too small to be really useful
// it is useful to dim the display
ssd1306_command(SSD1306_SETCONTRAST);
ssd1306_command(contrast);
}
void Adafruit_SSD1306::ssd1306_data(uint8_t c) {
if (sid != -1)
{
Adafruit_SSD1306.h
+4 -2
View File
@@ -29,7 +29,7 @@ All text above, and the splash screen must be included in any redistribution
#define SSD1306_I2C_ADDRESS 0x3C // 011110+SA0+RW - 0x3C or 0x3D
// Address for 128x32 is 0x3C
// Address for 128x32 is 0x3D (default) or 0x3C (if SA0 is grounded)
// Address for 128x64 is 0x3D (default) or 0x3C (if SA0 is grounded)
/*=========================================================================
SSD1306 Displays
@@ -129,10 +129,12 @@ class Adafruit_SSD1306 : public Adafruit_GFX {
void startscrolldiagleft(uint8_t start, uint8_t stop);
void stopscroll(void);
void dim(uint8_t contrast);
void drawPixel(int16_t x, int16_t y, uint16_t color);
private:
int8_t _i2caddr, sid, sclk, dc, rst, cs;
int8_t _i2caddr, _vccstate, sid, sclk, dc, rst, cs;
void fastSPIwrite(uint8_t c);
void slowSPIwrite(uint8_t c);