The clock-hands are also x+61 pixels to the right side: SSD1306_GotoXY(68, 45) Write the seconds in the middle, one bitmap left and draw the same right (x+61).
Below we put the font definition also in file fonts.c FontDef_t Font_12x18 = This array we put in file fonts.c for all the characters we need and it must be in the correct order like the asci table.
Because we don’t use them, we have to fill up with zero. We only need number characters but it is necessary to start with the space symbol and the 15 characters that follow, will go untill character zero. STM32 reads the font from upperside of 16 bits, 18 times in our example. I want to create fonts 12 pixels wide and 18 high. Start IDE File New STM32 Project Follow the datasheet from the OLED driver Solomon SSD1306 page 15 and 20Ĭonfiguration For the OLED we need SCL = PC0Īdd in core Inc the files fonts.h and ssd1306.h and Bitmaps.hĪdd in core Src the files fonts.c and ssd1306.c Note: every module works on 3.3V (not 5V like the Arduino UNO) Put the Arduino click SHIELD on the NUCLEO-L476RG and the OLED on the left side of the Arduino click SHIELD. The jumpers J1, J2 and J3 must be on the I2C position. Preparation We will use the I2C bus for OLED W.
STM32CubeIDE 1.6.1 or later free (after registration). STM32 NUCLEO-L476RG from ST availaible in the Elektorshop 24.95 € The purpose is to make custom instrument display.Īlso to create a tool in calc (linux) or exel (MS-windows) which can transfer from pixel to hexcode.
#Stm32 real time clock how to#
In this project we learn in detail how to use the RTC (real-time clock) from the STM32L476, create fonts, bitmap and use the oled W click from MIKROE as display.
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