What LCD is used in the Pixl.js? Datasheet? OSHW?

Hi,
As a complement, I used the following code on the Pixl.js.
It allows to switch On/Off the display thus saving the few uA it consumes.
Unfortunatelly, I do not have an oscilloscope and can't measure the real reduction of power consumption, nor any short peak of power when switched on back from deep sleep.

It is a very quick C++ to espruino translation and still contains unused constants... I was about to add this to the standard ST7565 module, when I understood that, indeed, the Pixl.js is using an integrated version probably in C++.

The source github repo is mentionned in the comments.

// handle lcd on/off deep sleep
// extracted from 
// https://github.com/boseji/Rpi-ST7565-SPI-LCD/blob/master/lcdST7565.c#L729

/************************************************************************/
/* Commands    */
/************************************************************************/
/*
BLACK 1
WHITE 0
*/

var ST7565_LCD_CMD_DISPLAY_OFF = 0xAE;
var ST7565_LCD_CMD_DISPLAY_ON = 0xAF;
var ST7565_LCD_PARAM_BRIGHTNESS = 0x0;

/* Unused constants from github
ST7565_LCD_CMD_SET_DISP_START_LINE   0x40
ST7565_LCD_CMD_SET_PAGE  0xB0

ST7565_LCD_CMD_SET_COLUMN_UPPER   0x10
ST7565_LCD_CMD_SET_COLUMN_LOWER   0x00

ST7565_LCD_CMD_SET_ADC_NORMAL  0xA0
ST7565_LCD_CMD_SET_ADC_REVERSE 0xA1

ST7565_LCD_CMD_SET_DISP_NORMAL 0xA6
ST7565_LCD_CMD_SET_DISP_REVERSE   0xA7
*/

var ST7565_LCD_CMD_SET_ALLPTS_NORMAL = 0xA4;

var ST7565_LCD_CMD_SET_ALLPTS_ON = 0xA5;

/* Unused constants from github
ST7565_LCD_CMD_SET_BIAS_9   0xA2
ST7565_LCD_CMD_SET_BIAS_7   0xA3

ST7565_LCD_CMD_RMW    0xE0
ST7565_LCD_CMD_RMW_CLEAR 0xEE
*/

var ST7565_LCD_CMD_INTERNAL_RESET = 0xE2;

/* Unused constants from github
ST7565_LCD_CMD_SET_COM_NORMAL  0xC0
ST7565_LCD_CMD_SET_COM_REVERSE 0xC8
ST7565_LCD_CMD_SET_POWER_CONTROL  0x28
ST7565_LCD_CMD_SET_RESISTOR_RATIO 0x20
*/

var ST7565_LCD_CMD_SET_VOLUME_FIRST = 0x81;
var ST7565_LCD_CMD_SET_VOLUME_SECOND = 0x0;

var ST7565_LCD_CMD_SET_STATIC_OFF = 0xAC;

var ST7565_LCD_CMD_SET_STATIC_ON = 0xAD;

var ST7565_LCD_CMD_SET_STATIC_REG = 0x0;

/* Unused constants from github
ST7565_LCD_CMD_SET_BOOSTER_FIRST  0xF8
ST7565_LCD_CMD_SET_BOOSTER_234 0
ST7565_LCD_CMD_SET_BOOSTER_5   1
ST7565_LCD_CMD_SET_BOOSTER_6   3
ST7565_LCD_CMD_NOP    0xE3
ST7565_LCD_CMD_TEST   0xF0
*/

/**
 *  Function to control the Contrast and brightness ratio
 *  - This is generally a fixed value for a given LCD.
 */
function lcd_bright ( bValue ) {
  retcode = 0;
  retcode = Pixl.lcdw(ST7565_LCD_CMD_SET_VOLUME_FIRST);
  if(retcode !== 0) return retcode;
  return Pixl.lcdw(ST7565_LCD_CMD_SET_VOLUME_SECOND | (bValue & 0x3f));
}

/**
 * @brief Function to Put the LCD into Deep Sleep mode
 * 
 */
function lcd_sleep ( ){
  // * WORKS displays is wiped, so you have to g.flip() afterward
  Pixl.lcdw(ST7565_LCD_CMD_SET_STATIC_OFF);
  Pixl.lcdw(ST7565_LCD_CMD_DISPLAY_OFF);
  Pixl.lcdw(ST7565_LCD_CMD_SET_ALLPTS_ON);
}

/**
 * @brief Function to bring back the LCD from Deep Sleep mode
 * All display contents are cleared and need to reinitalize
 * 
 * WARNING SO FAR DISPLAY IS SET UPSIDE DOWN
 */
function lcd_wakeup ( ) {
  Pixl.lcdw(ST7565_LCD_CMD_INTERNAL_RESET);
  lcd_bright(ST7565_LCD_PARAM_BRIGHTNESS);
  Pixl.lcdw(ST7565_LCD_CMD_SET_ALLPTS_NORMAL);
  Pixl.lcdw(ST7565_LCD_CMD_DISPLAY_ON);
  Pixl.lcdw(ST7565_LCD_CMD_SET_STATIC_ON);
  Pixl.lcdw(ST7565_LCD_CMD_SET_STATIC_REG | 0x03);
}

/**
 * @brief Function to Put and wakup the LCD in Standby mode
 *   In this mode the display contents are not lost
 *   its only not visible
 * @param bWakeUp Used to decide that if we need to enter or exit standby
 *  0 - Enters into the Standby mode
 *  1 - Exits the Standby mode
 */
function lcd_standby ( bWakeUp ) {
  if (bWakeUp === 0) { /* Enter standby mode */
    Pixl.lcdw(ST7565_LCD_CMD_SET_STATIC_ON);
    Pixl.lcdw(ST7565_LCD_CMD_SET_STATIC_REG | 0x03);
    Pixl.lcdw(ST7565_LCD_CMD_DISPLAY_OFF);
    Pixl.lcdw(ST7565_LCD_CMD_SET_ALLPTS_ON);
  }
  else { /* Wake from standby */
    Pixl.lcdw(ST7565_LCD_CMD_SET_ALLPTS_NORMAL);
    Pixl.lcdw(ST7565_LCD_CMD_DISPLAY_ON);
  }
}

var lcdstatus = 0;

function lcdonoff() {
  lcd_standby(lcdstatus);
  if (lcdstatus === 0) lcdstatus = 1;
  else lcdstatus = 0;
}

setWatch(lcdonoff,BTN1,{edge:"rising", debounce:50, repeat:true});