poephond
/
ESP32C3-BASELINE
forked from Agent725/ESP32C3
1
0
Fork 0
Code Pull Requests Activity

added delay to ensure OLED is initialized upon cold boot

This commit is contained in:
Agent725 2025-11-08 19:55:00 +01:00
parent ef76c8f579
commit 5e1a34c9d7
1 changed files with 41 additions and 38 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

79
codingExamples/screensaver.js
View File

@ -2,45 +2,48 @@
* SCREENSAVER: bounces a nice little text over the screen * SCREENSAVER: bounces a nice little text over the screen
*/ */
// offsets must be defined for correct display on screen! // for some reason the OLED screen needs this timeout
const Xoffset = 8; setTimeout(function() {
const Yoffset = 8; // offsets must be defined for correct display on screen!
const Xoffset = 8;
const Yoffset = 8;
// define the function first, before using it below // define the function first, before using it below
function displayText(textString, x,y) { function displayText(textString, x, y) {
// write some text // write some text
scrn.drawString(textString, Xoffset + x, Yoffset + y); scrn.drawString(textString, Xoffset + x, Yoffset + y);
// write to the screen // write to the screen
scrn.flip(); scrn.flip();
// clear a bit of the screen in preparation before next update // clear a bit of the screen in preparation before next update
scrn.clearRect(Xoffset + x, Yoffset + y, Xoffset + x + 30, Yoffset + y + 8); scrn.clearRect(Xoffset + x, Yoffset + y, Xoffset + x + 30, Yoffset + y + 8);
} }
// MAIN FUNCTION: bounce text and flash LED (D8) // MAIN: flash LED (D8)
let on = false; let on = false;
let x = 0; let x = 0;
let y = 0; let y = 0;
let ix = 1; let ix = 1;
let iy = 1; let iy = 1;
const txt = 'HELLO'; const txt = 'HELLO';
function main() { function go() {
setInterval(function() { setInterval(function() {
on = !on; on = !on;
digitalWrite("D8",on); digitalWrite("D8",on);
y += iy; y += iy;
x += ix; x += ix;
if (x > (72-(txt.length*8))) ix = -ix; if (x > (72-(txt.length*8))) ix = -ix;
if (y > 34) iy = -iy; if (y > 34) iy = -iy;
if (x < 1) ix = -ix; if (x < 1) ix = -ix;
if (y < 1) iy = -iy; if (y < 1) iy = -iy;
displayText(txt,x,y); displayText(txt, x, y);
}, 100); }, 100);
} }
// //
// required modules/libraries (in Espruino must be included at the end due to needing functions) // required modules/libraries (in Espruino must be included at the end due to needing functions)
// //
I2C1.setup({scl:"D6",sda:"D5"}); // I2C setup I2C1.setup({scl:"D6",sda:"D5"}); // I2C setup
// initialize the screen and its dimensions (null can be replaced by a callback) // initialize the screen and its dimensions (null can be replaced by a callback)
const scrn = require("SSD1306").connect(I2C1, main, { width:72, height:48 }); // for 72x48 LCD const scrn = require("SSD1306").connect(I2C1, main, { width:72, height:48 }); // for 72x48 LCD
}, 5000);