Introduction

This is the firmware for the remote controlled switch based on an EFM32TG210F16 paired to a SX1211.

Versions

Hello, world

Outputs "Hello, World" on the USART at 115200 baud once every 10 seconds.

Test transmitter

Outputs some 8 bytes of random data + checksum (for a total of 9 bytes) to the SX1211 to be sent at least 10 times per second.

Test receiver

Outputs received signal level on UART once every 5 seconds.

Turns LED on and off as instructed

Hardware

The main components are the following:

1. Microcontroller - EFM32TG210F16
2. Radio - SX1211

The EFM32TG210F16 is a Cortex-M3 microcontroller, with the following features:

• Flash: 16kB
• RAM: 4kB
• USART
• Low-Energy UART
• I2C
• GPIO
• Timer/Counter
• LESENSE
• Low-Energy Timer
• Real-time Counter
• Pulse Counter
• Watchdog Timer
• ADC
• Operational amplifier
• LCD Controller
• DAC
• Analog Comparator