TIM_frq
所属分类：处理器开发
开发工具：C/C++
文件大小：928KB
下载次数：164
上传日期：2011-08-25 14:36:19
上 传 者：
LIliyu
说明： 利用stm32 tim定时器的计数模式测信号频率
(Use stm32 tim, the count mode test signal frequency)
文件列表:
(计数模式测频)输入TIM\driver\ascii.h (25438, 2011-04-21)
(计数模式测频)输入TIM\driver\hz_zimo.h (19357, 2011-06-09)
(计数模式测频)输入TIM\driver\spfd5408_tang.c (19777, 2011-04-21)
(计数模式测频)输入TIM\driver\spfd5408_tang.h (4182, 2011-06-07)
(计数模式测频)输入TIM\driver\touch.c (5641, 2011-04-05)
(计数模式测频)输入TIM\driver\touch.h (1880, 2011-04-03)
(计数模式测频)输入TIM\INC\cortexm3_macro.s (10308, 2010-02-25)
(计数模式测频)输入TIM\INC\STM32F10xLIB.Opt (3139, 2010-02-25)
(计数模式测频)输入TIM\INC\STM32F10xLIB.Uv2 (6281, 2010-02-25)
(计数模式测频)输入TIM\INC\STM32F10xR.LIB (1759306, 2010-02-25)
(计数模式测频)输入TIM\INC\stm32f10x_adc.c (58563, 2010-02-25)
(计数模式测频)输入TIM\INC\stm32f10x_bkp.c (11170, 2010-02-25)
(计数模式测频)输入TIM\INC\stm32f10x_can.c (32049, 2010-02-25)
(计数模式测频)输入TIM\INC\stm32f10x_crc.c (4615, 2010-02-25)
(计数模式测频)输入TIM\INC\stm32f10x_dac.c (17175, 2010-02-25)
(计数模式测频)输入TIM\INC\stm32f10x_dbgmcu.c (5222, 2010-02-25)
(计数模式测频)输入TIM\INC\stm32f10x_dma.c (33291, 2010-02-25)
(计数模式测频)输入TIM\INC\stm32f10x_exti.c (8742, 2010-02-25)
(计数模式测频)输入TIM\INC\stm32f10x_flash.c (32684, 2010-02-25)
(计数模式测频)输入TIM\INC\stm32f10x_fsmc.c (41592, 2010-02-25)
(计数模式测频)输入TIM\INC\stm32f10x_gpio.c (22512, 2010-02-25)
(计数模式测频)输入TIM\INC\stm32f10x_i2c.c (46801, 2010-02-25)
(计数模式测频)输入TIM\INC\stm32f10x_it.c (29218, 2010-02-25)
(计数模式测频)输入TIM\INC\stm32f10x_iwdg.c (6431, 2010-02-25)
(计数模式测频)输入TIM\INC\stm32f10x_lib.c (9154, 2010-02-25)
(计数模式测频)输入TIM\INC\stm32f10x_nvic.c (28776, 2010-02-25)
(计数模式测频)输入TIM\INC\stm32f10x_pwr.c (11198, 2010-02-25)
(计数模式测频)输入TIM\INC\stm32f10x_rcc.c (43838, 2010-02-25)
(计数模式测频)输入TIM\INC\stm32f10x_rtc.c (12141, 2010-02-25)
(计数模式测频)输入TIM\INC\stm32f10x_sdio.c (39336, 2010-02-25)
(计数模式测频)输入TIM\INC\stm32f10x_spi.c (34808, 2010-02-25)
(计数模式测频)输入TIM\INC\stm32f10x_systick.c (6993, 2010-02-25)
(计数模式测频)输入TIM\INC\stm32f10x_tim.c (131091, 2010-02-25)
(计数模式测频)输入TIM\INC\stm32f10x_usart.c (43292, 2010-02-25)
(计数模式测频)输入TIM\INC\stm32f10x_wwdg.c (7716, 2010-02-25)
(计数模式测频)输入TIM\Project\Lst\STM3210E-EVAL.map (126440, 2011-08-14)
(计数模式测频)输入TIM\Project\Lst\stm32f10x_vector.lst (36602, 2011-08-14)
(计数模式测频)输入TIM\Project\main.c (6540, 2011-08-14)
(计数模式测频)输入TIM\Project\note.txt (1794, 2010-09-03)
(计数模式测频)输入TIM\Project\Obj\main.crf (158338, 2011-08-14)
... ...
测频率时
/* PLLCLK = 12MHz * 6 = 72 MHz */
RCC_PLLConfig(RCC_PLLSource_HSE_Div1, RCC_PLLMul_6);
时钟配置成 72M
采用测PWM输入模式 ：
72000000/65536 = 10***HZ;
最小只能测到 1100HZ ―――以上
1000HZ以下采用
计数模式;
TIM_ETRClockMode1Config(TIM1, TIM_ExtTRGPSC_OFF, TIM_ExtTRGPolarity_Inverted, 0);
外部时钟模式1、2只能触发 ETR管脚
TIM_TIxExternalClockConfig(TIM1,TIM_TS_TI2FP2,TIM_ICPolarity_Rising, 0);
//外部时钟可以选择 外部触发管脚
参考：http://wenku.baidu.com/view/d7ffd9e89***fcc22bcd10dda.html
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