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Added uView.end() to power off the display.

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In uView.begin() don't send commands that default to desired values.
This commit is contained in:
Scott Allen
2014-07-31 16:43:25 -04:00
parent 499594d9de
commit a32fd2c499
2 changed files with 33 additions and 10 deletions
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42
MicroView.cpp
View File

@@ -128,7 +128,7 @@ void MicroView::begin() {
// Enable 3.3V power to the display
pinMode(OLEDPWR, OUTPUT);
digitalWrite(OLEDPWR,HIGH);
digitalWrite(OLEDPWR, HIGH);
// Give some time for power to stabilise
delay(10);
@@ -150,19 +150,19 @@ void MicroView::begin() {
delay(10);
// Init sequence for 64x48 OLED module
command(DISPLAYOFF); // 0xAE
command(SETDISPLAYCLOCKDIV, 0x80); // 0xD5 / the suggested ratio 0x80
// command(DISPLAYOFF); // 0xAE
// command(SETDISPLAYCLOCKDIV, 0x80); // 0xD5 / the suggested ratio 0x80
command(SETMULTIPLEX, 0x2F); // 0xA8
command(SETDISPLAYOFFSET, 0x0); // 0xD3 / no offset
command(SETSTARTLINE | 0x0); // line #0
command(CHARGEPUMP, 0x14); // enable charge pump
command(NORMALDISPLAY); // 0xA6
command(DISPLAYALLONRESUME); // 0xA4
// command(SETDISPLAYOFFSET, 0x0); // 0xD3 / no offset
// command(SETSTARTLINE | 0x0); // 0x40 / line #0
command(CHARGEPUMP, 0x14); // 0x8D / enable charge pump
// command(NORMALDISPLAY); // 0xA6
// command(DISPLAYALLONRESUME); // 0xA4
command(SEGREMAP | 0x1);
command(COMSCANDEC);
command(SETCOMPINS, 0x12); // 0xDA
// command(SETCOMPINS, 0x12); // 0xDA
command(SETCONTRAST, 0x8F); // 0x81
command(SETPRECHARGE, 0xF1); // 0xd9
command(SETPRECHARGE, 0xF1); // 0xD9
command(SETVCOMDESELECT, 0x40); // 0xDB
command(DISPLAYON); //--turn on oled panel
@@ -171,6 +171,23 @@ void MicroView::begin() {
Serial.begin(115200);
}
/** \brief Power off the OLED display.
Reset display control signals and
prepare the SSD1306 controller for power off,
then power off the 3.3V regulator.
*/
void MicroView::end() {
DCLOW; // Just in case
command(DISPLAYOFF);
command(CHARGEPUMP, 0x10); // Disable the charge pump
delay(150); // Wait for charge pump off
RESETLOW;
SSLOW;
MVSPI.end(); // Disable SPI mode
digitalWrite(OLEDPWR, LOW); // Power off the 3.3V regulator
}
/** \brief Send 1 command byte.
Send 1 command byte via SPI to SSD1306 controller.
@@ -1652,6 +1669,11 @@ size_t MicroView::write(uint8_t c) {
/** \brief End SPI. */
void MVSPIClass::end() {
SPCR &= ~_BV(SPE);
// SCK and MOSI should already be low but set them again, to be sure.
digitalWrite(SCK, LOW);
digitalWrite(MOSI, LOW);
pinMode(SCK, OUTPUT);
pinMode(MOSI, OUTPUT);
}
/** \brief Set up SPI for transmitting