In 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 MOREIn the previous guide (here), we discussed how to use the timer to generate accurate delay. In this guide, we shall look at another application for timer which is to generate PWM signal on two channels and fading two leds. In this guide, we will...
READ MOREIn this guide, we shall investigate how to use timer to generate precise delay in down to microseconds ( will use 1 second delay here for demonstrations purposes only). In this guide, we will cover the following: What is the timer and how it...
READ MOREIn the pervious two guides (part 1 & part 2 ) how to send a single character and string using UART. In this guide, we shall discuss how to receive a character from UART using interrupt handler and echo back the sent character and blink the...
READ MOREIn previous guide(part 1), we looked for how to send a single character. Now we will extend the usage of uart module to send a string contains “Hello from stm32f4” and a variable as “my variable is variable” In this guide...
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