Need to know the time - accurately for your next project?
The code below allows your PIC to log into a network timeserver and it (eventually) writes the time to a Dallas RTC (code not supplied).
The PIC checks the NET TIME every power-up and thereafter every 4 hours. If it doesn't make connection, it tries an alternate time server. If THAT doesn't work (after retries) it gives up and tries again 4 hours later. A Lantronix XPort handles the connection to the net.
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SSD1306 OLED (72x40) I2C display from scratch
Here is a simple code to get started with this 72x40 display.
flotulopex Yesterday, 23:34I also include the SSD1306 command and display's datasheets.
Since I use EXCEL to design characters, here's the sheet you may want...