Peripherals & Interfaces

Peripheral & Interface demos for the Efinix Sapphire SoC.

These demos cover a wide range of on-chip and external peripheral communication — from GPIO and UART to SPI Flash, I2C sensors, EEPROM, and Real-Time Clock modules.

The following guides provide step-by-step instructions for setting up and executing each demo:

Available Demos
🔌	APB3 Slave Demo	Demonstrates how the Sapphire SoC controls the APB3 slave to stop generating new random numbers and reads the last generated value.
🛤️	AXI4 Slave Demo	Performs a write and read test for the internal BRAM that is attached to an AXI interface.
📌	General Purpose I/O (GPIO) Demo	Demonstrates digital input and output control using the GPIO peripheral on the Sapphire SoC.
💾	SPI Flash Demo	Shows read, write, and erase operations on an external SPI Flash memory device.
📡	UART Echo Demo	Basic UART communication demo that echoes received characters back to the terminal.
🔔	UART Interrupt Demo	Demonstrates interrupt-driven UART reception using the PLIC on the Sapphire SoC.
🔗	I2C Master Demo	Shows I2C master mode communication — scanning the bus and performing read/write transactions.
🔗	I2C Slave Demo	Demonstrates I2C slave mode — responding to master read/write requests on the bus.
🗂️	I2C EEPROM Demo	Demonstrates non-volatile storage read and write operations using an I2C EEPROM device.
🕐	I2C Real-Time Clock (RTC) Demo	Shows time and date configuration, alarm setting, and real-time readback using the PCF8523 RTC.
🌡️	I2C Temperature Sensor Demo	Reads temperature data from the on-board EMC1413 sensor via I2C with configurable alert limits.

APB3 Slave Demo AXI4 Slave Demo GPIO Demo SPI Flash Demo UART Echo Demo UART Interrupt Demo I2C Master Demo I2C Slave Demo I2C Eeprom Demo I2C Real-Time Clock Demo I2C Temperature Sensor Demo