SAM4SD32 Driver Documentation

Overview

This documentation set is organized by driver/service quickstarts and selected advanced use cases for SAM4SD32 on SAM4S-EK2.

• What Is ASF (Advanced Software Framework)?

GPIO (General-Purpose Input/Output)

PIO (Parallel Input/Output)

• Quick Start Guide for the SAM PIO driver
• Advanced use case - Interrupt driven edge detection
• API: Peripheral Parallel Input/Output (PIO) Controller

IOPORT (Input/Output Port Service)

• Quick start guide for the common IOPORT service
• Advanced use case doing port access
• API: Common IOPORT API

Delay Routines

• API (Common Delay Service): Busy-Wait Delay Routines
• Key routines: delay_s(), delay_ms(), delay_us()
• SAM low-level cycle helpers: cpu_delay_ms(), cpu_delay_us()

Timer/Counter

Timer/Counter (TC, Timer Counter)

• Quick Start Guide for the TC driver
• Timer Counter Capture Waveform Example
• API: SAM3/4S/4L/4E/4N/4CM/4C/G Timer Counter (TC) Driver

PWM (Pulse Width Modulation)

• Quickstart guide for SAM PWM module
• Use case #1
• API: Pulse Width Modulation (PWM)

Serial Interfaces

USART (Universal Synchronous/Asynchronous Receiver/Transmitter)

USART Low-Level Driver (sam/drivers/usart)

• Quick start guide for the SAM USART module
• USART receive character and echo back
• USART receive character and echo back via interrupts
• API: Universal Synchronous Asynchronous Receiver

USART High-Level Serial Service (common/services/serial)

• Quick start guide for Serial Interface service
• Advanced use case - Send a packet of serial data
• API: Serial Interface (Serial)

USART STDIO Integration (common/utils/stdio/stdio_serial)

• Quick Start Guide for USART STDIO Integration
• API: Standard serial I/O (stdio)

TWI (Two-Wire Interface, I2C)

• Quickstart guide for Common service TWI
• API (SAM TWI driver): Two-Wire Interface (TWI)
• API (Common TWI service): Two Wire-interface(TWI)

SPI (Serial Peripheral Interface)

• Quickstart guide for SAM SPI driver
• API: Serial Peripheral Interface (SPI)

ADC (Analog-to-Digital Converter)

• Quickstart guide for SAM ADC driver
• Advanced use cases
• API: Analog-to-digital Converter (ADC)

APIs

• PIO API: Peripheral Parallel Input/Output (PIO) Controller
• IOPORT API: Common IOPORT API
• Timer/Counter API: SAM3/4S/4L/4E/4N/4CM/4C/G Timer Counter (TC) Driver
• PWM API: Pulse Width Modulation (PWM)
• USART API (Low-Level Driver): Universal Synchronous Asynchronous Receiver
• USART API (High-Level Serial Service): Serial Interface (Serial)
• USART STDIO API: Standard serial I/O (stdio)
• TWI API (SAM driver): Two-Wire Interface (TWI)
• TWI API (Common service): Two Wire-interface(TWI)
• SPI API: Serial Peripheral Interface (SPI)
• ADC API: Analog-to-digital Converter (ADC)
• Delay API: Busy-Wait Delay Routines