In 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...
READ MOREIn this guide, we shall discuss how to use the UART module on STM32F4xx specifically, STM32F411RE Nucleo. In this guide we will cover the following: What is UART How to configure the UART on STM32F4xx Code Demo 1. What is UART To transfer data...
READ MOREIn the previous ADC guides (part 1, part 2, and part 3), we talked about how to configure the ADC to read a single channel in three different modes, polling, continuous with polling and interrupt. Those can be valid for simple application like...
READ MOREIn previous guide (here) we discussed how to handle Systick timer interrupt and blink a single led using interrupt generated by systick and millis function. In this guid, we will take it even further by blinking multiple leds (3 leds) in...
READ MOREIn previous two guides (Understanding GPIOs and Understanding the Systick Timer) we explained how to use GPIOs in both input mode and output mode and how to use SysTick timer to generate delay. Delay is a function thats block the cpu for certain...
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