Default setup and screen display code for Ideaspark ESP8266-096OLED

Hey, I bought one of these off of Temu a while back and started playing with it, but the online code tutorials didn't work. The ESP8266 would connect to the web but I couldn't make the screen display anything.

After a lot of trial and error I was able to track down the listing and find the missing pieces, which were these steps:

1: Install CH340 driver
2: Install ESP8266 Board
3: Select board as NodeMcu 1.0(ESP-12E Module)
4: Install the U8g2 library by oliver
5: Set the board properties:
Upload Speed 921600
Flash Size: 4MB (FS-2MB OTA: ~1019kb)
(The other defaults were fine)

And then here is a sample code that will re-create the default screen display when flashed from the Arduino IDE:

<Arduino.h>
<Wire.h>
<U8g2lib.h>

U8G2_SSD1306_128X64_NONAME_F_SW_I2C
//u8g2(U8G2_R0,/'clock='/14,/'data='/12,U8X8_PIN_NONE); This is what was in the listing, but it didn't work. The next line corrects that.
u8g2(U8G2_R0,14,12,U8X8_PIN_NONE);

void setup(void) {
u8g2.begin();
}
void loop(void) {
u8g2.clearBuffer();
u8g2.setFont(u8g2_font_6x13_tf); //This sets the font
u8g2.drawStr(0,10,"Hello,ideaspark"); // (X pos, y pos, content)
u8g2.drawStr(0,26,"ESP8266");
u8g2.drawStr(0,36,"ESP8266 0.96");
u8g2.drawStr(0,46,"ESP8266 0.96 inch");
u8g2.drawStr(0,56,"ESP8266 0.96 SSD1306");
u8g2.sendBuffer();
delay(1000);
}

Hopefully that helps someone!

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lcentin,

void loop()
{
getNTPtime(10);
showTime(&timeinfo);
//delay(10);

long rssi = WiFi.RSSI();
if (rssi >= -55) {
u8g2.drawBox(102,7,4,1);
u8g2.drawBox(107,6,4,2);
u8g2.drawBox(112,4,4,4);
u8g2.drawBox(117,2,4,6);
u8g2.drawBox(122,0,4,8);
u8g2.sendBuffer();
} else if (rssi < -55 & rssi > -65) {
u8g2.drawBox(102,7,4,1);
u8g2.drawBox(107,6,4,2);
u8g2.drawBox(112,4,4,4);
u8g2.drawBox(117,2,4,6);
u8g2.drawFrame(122,0,4,8);
u8g2.sendBuffer();
} else if (rssi < -65 & rssi > -75) {
u8g2.drawBox(102,8,4,1);
u8g2.drawBox(107,6,4,2);
u8g2.drawBox(112,4,4,4);
u8g2.drawFrame(117,2,2,6);
u8g2.drawFrame(122,0,4,8);
u8g2.sendBuffer();
} else if (rssi < -75 & rssi > -85) {
u8g2.drawBox(102,8,4,1);
u8g2.drawBox(107,6,4,2);
u8g2.drawFrame(112,4,4,4);
u8g2.drawFrame(117,2,4,6);
u8g2.drawFrame(122,0,4,8);
u8g2.sendBuffer();
} else if (rssi < -85 & rssi > -96) {
u8g2.drawBox(102,8,4,1);
u8g2.drawFrame(107,6,4,2);
u8g2.drawFrame(112,4,4,4);
u8g2.drawFrame(117,2,4,6);
u8g2.drawFrame(122,0,4,8);
u8g2.sendBuffer();
} else {
u8g2.drawFrame(102,8,4,1);
u8g2.drawFrame(107,6,4,2);
u8g2.drawFrame(112,4,4,4);
u8g2.drawFrame(117,2,4,6);
u8g2.drawFrame(122,0,4,8);
u8g2.sendBuffer();
}

}

bool getNTPtime(int sec)
{
{
uint32_t start = millis();
do
{
time(&now);
localtime_r(&now, &timeinfo);
delay(10);
} while (((millis() - start) <= (1000 * sec)) && (timeinfo.tm_year < (2016 - 1900)));

if (timeinfo.tm_year <= (2016 - 1900)) 
    return false;

Serial.print("Time Now: ");  
Serial.println(now);

}
return true;
}

void showTime(tm *localTime)
{
//print to serial terminal
Serial.print(localTime->tm_mday);
Serial.print('/');
Serial.print(localTime->tm_mon + 1);
Serial.print('/');
Serial.print(localTime->tm_year - 100);
Serial.print('-');
Serial.print(localTime->tm_hour);
Serial.print(':');
Serial.print(localTime->tm_min);
Serial.print(':');
Serial.print(localTime->tm_sec);
Serial.print(" Day of Week ");
Serial.println(localTime->tm_wday);
Serial.println();

char time_output[20];
u8g2.setFont(u8g2_font_courB12_tf);
u8g2.drawStr(0,10,getDOW(localTime->tm_wday));
u8g2.setFont(u8g2_font_inr19_mn);
sprintf(time_output, "%02d:%02d:%02d", localTime->tm_hour, localTime->tm_min, localTime->tm_sec);
u8g2.drawStr(0,38,time_output);
u8g2.setFont(u8g2_font_courB10_tf);
sprintf(time_output, "%02d/%02d/%02d", localTime->tm_mday, localTime->tm_mon + 1, localTime->tm_year - 100 + 2000);
u8g2.drawStr(0,56,time_output);
u8g2.sendBuffer();
}

char * getDOW(uint8_t tm_wday)
{
switch(tm_wday)
{
case 1:
return "Monday";
break;
case 2:
return "Tuesday";
break;
case 3:
return "Wednesday";
break;
case 4:
return "Thursday";
break;
case 5:
return "Friday";
break;
case 6:
return "Saturday";
break;
case 7:
return "Sunday";
break;
default:
return "Error";
break;
}
}

lcentin,

/* >>> Credits <<<
From the original ideas by Bizarroland (thanks!!!) that posted the original code:
https://kbin.social/m/Arduino/t/779187/Default-setup-and-screen-display-code-for-Ideaspark-ESP8266-096OLED

And the link to useful tips & Info's (aka library fonts names, commands ...)
https://github.com/olikraus/u8g2/wiki

For the NTP clock part I used the ideas from Emmanuel Odunlade (thank you! Good project)
https://www.electronics-lab.com/project/network-clock-using-esp8266-oled-display/

For the WiFi strenght bar indicator I modified the positron79 code (thank you! Nice idea)
https://forum.arduino.cc/t/wifi-bars-for-uno-wifi-rev2-with-oled-display/866644/3
*/
<Arduino.h>
<Wire.h>
<U8g2lib.h>
<ESP8266WiFi.h>
<time.h>

U8G2_SSD1306_128X64_NONAME_F_SW_I2C
u8g2(U8G2_R0,14,12,U8X8_PIN_NONE);
const char* ssid = "YOUR-WIFI-SSID-HERE";
const char* password = "YOU-WIFI-PASSWORD-HERE";
const char* NTP_SERVER = "time.ien.it";
const char* TZ_INFO = "CET-1CEST-2,M3.5.0/02:00:00,M10.5.0/03:00:00";

tm timeinfo;
time_t now;
long unsigned lastNTPtime;
unsigned long lastEntryTime;

void setup(void) {
u8g2.begin();
Serial.begin(115200);
Serial.println("\n\nNTP Time Test\n");

WiFi.begin(ssid, password);
Serial.print("Connecting to network");
int counter = 0;
while (WiFi.status() != WL_CONNECTED)
{
delay(200);
if (++counter > 100)
ESP.restart();
Serial.print( "." );
}
Serial.println("\nWiFi connected\n\n");

configTime(0, 0, NTP_SERVER);

setenv("TZ", TZ_INFO, 1);

if (getNTPtime(10))
{
// wait up to 10sec to sync
}
else
{
Serial.println("Time not set");
ESP.restart();
}

showTime(&timeinfo);
lastNTPtime = time(&now);
lastEntryTime = millis();

}

lcentin,

Thank you Bizarroland! You gave me the right starting point to modify the original code!
Modifying other sources (thanks to the other contributors mentioned inside the code) I
created a NTP digital clock with WiFi strenght bar indicator.
Hope this helps someone..
Enjoy!
Luigi

Bizarroland,
Bizarroland avatar

Just a little extra:

https://github.com/olikraus/u8g2/wiki

This is the github that covers the various display options in the library.

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