Mcp23008 Microchip Avrlibrary
What is Mcp23008 Microchip Avrlibrary
The mcp23008_Microchip_Library is a software library designed for controlling the MCP23008 I/O Expander from Microchip. This device features an I2C interface and provides 8 additional GPIO pins that can be configured as input or output. The library simplifies interaction with the MCP23008 by offering straightforward functions for pin configuration, state reading, and value alteration, all optimized for the AVR64DD32 microcontroller.
Use cases
This library is particularly useful for embedded system applications where additional GPIO pins are required but are limited by the microcontroller’s own pin availability. Common use cases include controlling multiple LEDs, reading button states, or expanding sensor inputs in robotics, IoT projects, or any applications requiring significant GPIO resources.
How to use
To use the mcp23008_Microchip_Library, you need to create a new project in MPLAB X IDE, set it up for the AVR64DD32, and use the MPLAB Code Configurator to add an I2C driver. After generating the initial code, integrate the MCP23008 library files into your project. Include the header file in your main code and utilize the available functions to initialize the I/O expander, configure pin modes, and read/write GPIO states.
Key features
Key features of the library include the ability to set pin modes (input/output/input with pull-up), read pin states, set pin values high or low, and support for multiple MCP23008 devices on the I2C bus, all enabling flexible I/O management. The library streamlines communication over I2C, making it easy to manage additional GPIO without complex code.
Where to use
The library is applicable in any project utilizing the AVR64DD32 microcontroller where the MCP23008 is connected via I2C. It can be used in hobby electronics, professional prototyping, and production systems needing extra GPIOs. Ideal fields include home automation, robotics, and sensor integration in IoT applications.
Overview
What is Mcp23008 Microchip Avrlibrary
The mcp23008_Microchip_Library is a software library designed for controlling the MCP23008 I/O Expander from Microchip. This device features an I2C interface and provides 8 additional GPIO pins that can be configured as input or output. The library simplifies interaction with the MCP23008 by offering straightforward functions for pin configuration, state reading, and value alteration, all optimized for the AVR64DD32 microcontroller.
Use cases
This library is particularly useful for embedded system applications where additional GPIO pins are required but are limited by the microcontroller’s own pin availability. Common use cases include controlling multiple LEDs, reading button states, or expanding sensor inputs in robotics, IoT projects, or any applications requiring significant GPIO resources.
How to use
To use the mcp23008_Microchip_Library, you need to create a new project in MPLAB X IDE, set it up for the AVR64DD32, and use the MPLAB Code Configurator to add an I2C driver. After generating the initial code, integrate the MCP23008 library files into your project. Include the header file in your main code and utilize the available functions to initialize the I/O expander, configure pin modes, and read/write GPIO states.
Key features
Key features of the library include the ability to set pin modes (input/output/input with pull-up), read pin states, set pin values high or low, and support for multiple MCP23008 devices on the I2C bus, all enabling flexible I/O management. The library streamlines communication over I2C, making it easy to manage additional GPIO without complex code.
Where to use
The library is applicable in any project utilizing the AVR64DD32 microcontroller where the MCP23008 is connected via I2C. It can be used in hobby electronics, professional prototyping, and production systems needing extra GPIOs. Ideal fields include home automation, robotics, and sensor integration in IoT applications.
Content
#mcp23008_Microchip_Library
Esta biblioteca foi desenvolvida para funcionar com o MCP23008 da Microchip, um IO Expander com interface I2C. A biblioteca foi implementada utilizando o AVR64DD32 da Microchip como microcontrolador base.
⚠️ Nota: A biblioteca não foi testada com microcontroladores PIC.
Índice
O MCP23008 é um expansor de IO com interface I2C que oferece 8 pinos GPIO adicionais configuráveis como entrada ou saída. Esta biblioteca facilita o controle do dispositivo através de funções simples para configurar os pinos, ler estados e alterar valores.
Pagina_MCP23008
A biblioteca foi desenvolvida para uso com o AVR64DD32, utilizando sua interface I2C.
Características
- Configuração de pinos como entrada ou saída.
- Leitura e escrita dos pinos GPIO.
- Suporte para registrar endereços I2C de múltiplos MCP23008.
- Comunicação I2C simplificada.
Requisitos
- Microcontrolador AVR64DD32.
- Biblioteca I2C do MPLAB Code Configurator (MCC) compatível com o AVR64DD32.
- Compilador XC8 ou ambiente similar.
- MCP23008 conectado ao barramento I2C.
Instruções
- Inicie um novo projeto no MPLAB X IDE 6.20v e escolha as opções que mais se adequam ao seu projeto (Nome, microcontrolador, etc.)
- Após o projeto criado, inicie o MCC (MPLAB Code Configurator)
- Adicione um driver I2C_Host
- Clique em Generate
- Abra o Arquivo “main.c”
- Adicione o arquivo mcp23008_Microchip.h na pasta header e o .c na pasta source, junto ao “main.c”
- Adicione o #include “mcp23008_Microchip.h”
Uso
- void mcp23008Init(MCP23008 *mcp23008, uint8_t Addr) - Iniciar IOExpander. Addr = Endereço.
- void mcpSetPinMode(MCP23008 *mcp23008, uint8_t pin, PinDirection_ mode) - mode pode assumir os valores: OUTPUT, INPUT, INPUT_PULLUP
- void mcpSetPinHigh(MCP23008 *mcp23008, uint8_t pin) - Setar pino em 1
- void mcpSetPinLow(MCP23008 *mcp23008, uint8_t pin) - Setar pino em 0
- uint8_t mcpGetPinState(MCP23008 *mcp23008, uint8_t pin) - retorna o valor do pino (0 ou 1)