Introduction

LPC812 microboard, DS18B20 thermometer and 2.5 digits indicator. First it displays 64 bit serial number of the connected thermometer and then displays current temperature on a 2.5 digits indicator. LED blinks at constant speed (period is 1s).

Hardware

• 2.5 digits indicator board.
• LPC812 microboard (MCU clock is 12Mhz from internal oscillator).
• One LED.
• DS18B20 termomether.

Software

Used peripherals:

• GPIO.
• SPI0 (16-bit, speed is the same as MCU clock.
• Multi-Rate Timer (MRT) for millisesonds delay.

Project uses external libraries:

• LPCOpen 3.02 library for LPC8xx
• 2.5 digits indicator library
• 1-Wire library
• DS18B20 library

Links

More info at: http://wp.me/p31f2I-oH

Video: http://youtu.be/0Xp2Hgbzp0Y