In the pervious guide, we took a look at how to send data over SPI (from here). In this guide, we shall use SPI to drive a lcd and display some variables on it. In this guide, we will need the following topics: SPI configuration : here Encoder...
READ MOREIn the previous guide(here), we looked at the operation principle of how ultrasonic works and we used very crude code to measure the distance. In this guide, we shall use external GPIO interrupt and timer 2 of the STM32F4 to measure the distance...
READ MOREIn the previous guide (here), we discussed how to send a single character using SPI in polling mode. This method will decrease the CPU performance since the CPU has to wait for each time before sending the character. In this guide, we shall...
READ MOREIn this guide, we shall discuss what is SPI and how transmit single byte over SPI. In this guide, we will cover the following: What is SPI SPI pin setup SPI initialize SPI transmite function Result 1. What is SPI SPI, which stands for Serial...
READ MOREIn this guide, we shall use registers to change the core frequency from default 16MHz to 100MHz (maximum for F411RE). We shall use both keil uVision and STM32CubeIDE to change the core frequency to 100MHz. 1. Open CubMX After you select your MCU...
READ MOREIn pervious guides, we took look how to send string using DMA (here), and how to receive characters using interrupt(here). In this guide, we shall use DMA to receive 5 characters and echo back the received character using DMA also. In this guide...
READ MOREIn previous guides, we looked at TIM2 of STM32 to generate delay, interrupts, PWM and how to use PWM to fade LED and control servo motors. In this guide, we shall cover how to use TIM2 of STM32 to read shaft encoder. We will cover the following...
READ MOREIn this guide, we shall discuss what is I2C and how to make an i2c bus scanner to scan the slave devices that connected to the i2c1 bus of STM32F411 In this guide we will cover the following: What is I2C I2C setup for stm32f4 I2C bus scanner code...
READ MOREIn the pervious part (from here), we took a look how to send string in UART using polling mode. In polling mode, we forced the cpu to send the string character by character using software. In this guide, we shall use DMA (Direct Memory Access) to...
READ MOREIn pervious PWM guide (here), discussed how to use TIM2 of STM32F411 to generate 2 PWM signals to fade 2 LEDs. In this guide, we shall use PWM signal to control a servo motor (SG90). In this guide, we shall cover the following What is servo motor...
READ MOREIn pervious two guides we took look at how to use systick timer to blink an led without using delay (here) and how to use interrupt to blink multiple led (here). In this guide, we shall use systick timer to handle multiple periodic tasks. Task 1...
READ MOREIn previous two guides, we discussed how to use timer to generate delay (here) and how to generate PWM signal (here). In this guide, we shall look how to configure TIM2 to generate an interrupt every second and toggle an led every second. In this...
READ MOREAll Rights Reserved