There is One Wire driver. It use UART. This source is for Atmel AT91SAM7Sxxx processors. There is driver for DS18S20 temperature sensor. It use One Wire driver for communication. I test this source in IAR Compiler for ARM 5.40.

iar IAR Systems即将发布支持ARM EABI开放标准的IAR Embedded Workbench(r) Version 5 for ARM(r)，这是对公司的旗舰产品—编译器和调试器的重大升级，使之成为第一个独立支持最新的ARM Cortex(tm)-M1处理器的开发。 Cortex(tm)-M1是第一个特别为field-programmable gate arrays(s)而设计的ARM处理器。 -iar IAR Systems will soon release suppor