In the previous guide (here), we took a look at keypad structure and how to initialize the keypad pins. In this guide, we shall develop the algorithm to read from keypad. In this guide, we shall cover the following: Read keypad function. Code...
READ MOREIn this two part guide, we shall see how to interface 4×4 Keypad with STM32F411RE-Nucleo and develop the algorithm required to read the keypad. In this guide, we shall cover the following: Key structure. Reading keypad. Keypad pinout...
READ MOREIn the past guides related to SPI, we worked only with single slave device. In this guide, we shall cover dealing with multiple slave devices. The slave devices in this case are: MPU9250. SSD1306 SPI OLED Monochrom display. In this guide, we...
READ MOREIn the previous guide (here), we took a look at ACS712 current sensor and how to measure DC current. In this guide we shall use this sensor to measure AC current. NOTE: This guide uses main voltages. Please handle with care In this guide, we...
READ MOREIn this guide, we shall interface ACS712 hall effect current sensor with STM32. In this guide, we shall cover the following: ACS712 Sensor. Connection. Driver Development. Code. Result. 1. ACS712 Sensor: The Allegro® ACS712 provides...
READ MOREIn the previous guide on OLED (here), we took a look at how to connect SSD1306 I2C OLED with STM32F4. In this guide, we shall use the SPI version of the display to display text and picture. In this guide, we shall cover the following: SSD1306...
READ MOREIn the previous guide (here), we took a look at the feature of internal RTC of STM32F4. In this guide, we shall develop the driver to read/write from/to RTC. In this guide, we shall cover the following: Initializing the RTC. Update RTC. Read from...
READ MOREIn this guide, we shall see how the internal RTC of STM32F4 is working and what features it holds and in part2, we shall configure the RTC and display the time and date on Liquid Crystal Display (LCD). In this guide, we will cover the following...
READ MOREIn this article, we will took at the RFID and how it does work and use RC522 to read RFID tag and display the tag ID on I2C LCD. In this article, we will cover the following: What is RFID. RC522 RFID module. Connection with STM32. Code. Demo. 1...
READ MOREIn the previous guide (here), we saw how to configure timer to work in encoder mode. In this guide, we shall take it step further and measure the rotational speed in RPM (Revolutions per Minutes). In this guide, we shall cover the following: How...
READ MOREThis guide shows how to interface the STM32F4 board with ST7789 TFT display.The ST7789 TFT module contains a display controller with the same name: ST7789. It’s a color display that uses SPI interface protocol and requires 3, 4 or 5 control pins...
READ MOREIn the previous guide (here), we saw how to configure the required peripherals. In this guide we shall see how to develop the algorithm required to decode the data. In this guide, we shall cover the following: Decoding algorithm. Code. Demo 8...
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