hvpm_snesorless中定时器配置问题

// Timing sync for background loops// Timer period definitions found in device specific PeripheralHeaderIncludes.h
CpuTimer0Regs.PRD.all = mSec1; // A tasks
CpuTimer1Regs.PRD.all = mSec5; // B tasks
CpuTimer2Regs.PRD.all = mSec50; // C tasks

请教各位大神，为什么hvpm_sensorless中没有配置定时器程序，仅仅给了定时器计数值。。。是不是不需要啊？