Understanding the GPIO peripheral
Since we introduced the GPIO peripheral in Chapter 2, this section will reiterate the key points to remember regarding GPIOs.
Microcontroller pins are grouped into ports. For instance, a microcontroller might have ports named GPIOA, GPIOB, and GPIOC. See Figure 2.10 in Chapter 2. Each port is composed of individual pins, which are referred to by their port name, followed by their pin number. The following are examples of this naming convention:
- PA1 refers to port A, pin 1
- PD7 refers to port D, pin 7
This naming convention helps in identifying and configuring specific pins for various functions.
The STM32F411xC/E microcontroller series features six ports: PORTA, PORTB, PORTC, PORTD, PORTE, and PORTH. Each port is equipped with a comprehensive set of registers to manage configuration, data handling, and functionality.
These ports offer a variety of features designed for versatility and performance. The features offered include...
