实现依靠dsplink在ARM和dsp之间传输数据-can convey the data between ARM and dsp base on dsplink

实现PID算法的仿真。在CCS3.3 simulator配置情况下，仿真了浮点PID和定点PID，仿真结果很好。希望能帮助大家理解和学些PID算法。-PID algorithm simulation in ccs3.3 base on DSP2812 simulator configuration. Test the float PID and unsined int 16 data PID.