Abstract: This paper analyzes the basic framework of device driver based on DeltaOS, designs and implements multi-channel driver of PMC-CAN. In connection with the characteristics of real-time and multitask in DeltaOS, based on watchdog timer, this paper effectively simplifies the design of periodic task polling in the multitask environments. It also designs a method of processing multi-channel interrupt to improve the efficiency of multi-channel data transmission and channel utilization. Based on dynamic scheduling table it proposes a scheduling method for the system of multi channels of CAN. It verifies the correctness of the CAN driver and effectiveness of multi-channel’s scheduling through experiments.

Key words: DeltaOS, task polling, watchdog timer, multi-channel scheduling, dynamic scheduling table

摘要： 分析了DeltaOS的设备驱动基本框架，设计实现了多通道PMC-CAN驱动程序。针对DeltaOS实时多任务的特点，基于看门狗定时器方法，有效简化了多任务环境下周期任务轮询程序的设计；设计了一种多通道中断处理的方法，提高了多通道数据传输效率及通道利用率；针对多个CAN通道的调度提出了一种基于动态调度表的调度方法；通过实验验证了CAN驱动的正确性及多通道调度的有效性。

关键词: DeltaOS, 任务轮询, 看门狗定时器, 多通道调度, 动态调度表