void tim2_configuration(void)
{
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
TIM_DeInit(TIM2);
TIM_TimeBaseStructure.TIM_Period=2000; //ARR 的值
TIM_TimeBaseStructure.TIM_Prescaler=0;
TIM_TimeBaseStructure.TIM_ClockDivision=0; //时钟分频
TIM_TimeBaseStructure.TIM_CounterMode=TIM_CounterMode_Up; //向上计数模式
TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure);
TIM_PrescalerConfig(TIM2,0x8C9F,TIM_PSCReloadMode_Immediate);//时钟分频系数 36000，所以定时器时钟为 2K
/* Clear TIM2 update pending flag[清除TIM2溢出中断标志] */
TIM_ClearFlag(TIM2, TIM_FLAG_Update);
/* Enable TIM2 Update interrupt [TIM2溢出中断允许]*/
TIM_ITConfig(TIM2, TIM_IT_Update, ENABLE);
TIM_ARRPreloadConfig(TIM2, DISABLE);//禁 止 ARR 预装载缓冲器
TIM_Cmd(TIM2, ENABLE); //开启时钟
}
编译连接时总是有这种情况，，，，到底肿么了，两天了，苦恼中，3.5的库，比着别人的一句句抄都不行
还有倒数第二句为什么要禁止ARR预装载缓冲期，它不是自动往定时器里装值的吗
.\Output\Project.axf: Error: L6218E: Undefined symbol TIM_ARRPreloadConfig (referred from system_init.o).
.\Output\Project.axf: Error: L6218E: Undefined symbol TIM_ClearFlag (referred from system_init.o).
.\Output\Project.axf: Error: L6218E: Undefined symbol TIM_Cmd (referred from system_init.o).
.\Output\Project.axf: Error: L6218E: Undefined symbol TIM_DeInit (referred from system_init.o).
.\Output\Project.axf: Error: L6218E: Undefined symbol TIM_ITConfig (referred from system_init.o).
.\Output\Project.axf: Error: L6218E: Undefined symbol TIM_PrescalerConfig (referred from system_init.o).
.\Output\Project.axf: Error: L6218E: Undefined symbol TIM_TimeBaseInit (referred from system_init.o).
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发表于 2012-5-11 09:57:25
楼主
发表于 2012-5-11 10:52:06
