Description: This example shows how to set up the TIM, and use it to measure the frequency and duty cycle of an external input signal. TIM2 clock set to 72MHz and the prescaler is set to 0, TIM2 is counter clock can be expressed as: TIM2 is counter clock = TIMxCLK/(prescaler. Ppls1) = 72 MHz, the minimum measurable frequency value of 1100 Hz. Set TIM2 PWM input mode (PWM Input Mode), the external signal as an input connected to the the TIM2 Channel 2. TIM2 counter interrupt signal to measure frequency and duty cycle. Calculate the frequency and duty cycle of the signal in TIM2_IRQHandler as follows: variable " Frequency" on the grounds of the external signal frequency by the following formula: Frequency = TIM2 is counter clock/TIM2_CCR2 unit Hz variable Duty_Cycle " on the grounds of the following formula to get external duty cycle: Duty_Cycle = (TIM2_CCR1* 100)/(TIM2_CCR2) in
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File list (Check if you may need any files):
example6_TIM\App\bsp.c
............\...\bsp.h
............\...\main.c
............\...\stm32f10x_conf.h
............\...\stm32f10x_it.c
............\...\stm32f10x_it.h
............\FWLib\inc\cortexm3_macro.h
............\.....\...\stm32f10x_adc.h
............\.....\...\stm32f10x_bkp.h
............\.....\...\stm32f10x_can.h
............\.....\...\stm32f10x_dma.h
............\.....\...\stm32f10x_exti.h
............\.....\...\stm32f10x_flash.h
............\.....\...\stm32f10x_gpio.h
............\.....\...\stm32f10x_i2c.h
............\.....\...\stm32f10x_iwdg.h
............\.....\...\stm32f10x_lib.h
............\.....\...\stm32f10x_map.h
............\.....\...\stm32f10x_nvic.h
............\.....\...\stm32f10x_pwr.h
............\.....\...\stm32f10x_rcc.h
............\.....\...\stm32f10x_rtc.h
............\.....\...\stm32f10x_spi.h
............\.....\...\stm32f10x_systick.h
............\.....\...\stm32f10x_tim.h
............\.....\...\stm32f10x_tim1.h
............\.....\...\stm32f10x_type.h
............\.....\...\stm32f10x_usart.h
............\.....\...\stm32f10x_wwdg.h
............\.....\src\stm32f10x_adc.c
............\.....\...\stm32f10x_bkp.c
............\.....\...\stm32f10x_can.c
............\.....\...\stm32f10x_dma.c
............\.....\...\stm32f10x_exti.c
............\.....\...\stm32f10x_flash.c
............\.....\...\stm32f10x_gpio.c
............\.....\...\stm32f10x_i2c.c
............\.....\...\stm32f10x_iwdg.c
............\.....\...\stm32f10x_lib.c
............\.....\...\stm32f10x_nvic.c
............\.....\...\stm32f10x_pwr.c
............\.....\...\stm32f10x_rcc.c
............\.....\...\stm32f10x_rtc.c
............\.....\...\stm32f10x_spi.c
............\.....\...\stm32f10x_systick.c
............\.....\...\stm32f10x_tim.c
............\.....\...\stm32f10x_tim1.c
............\.....\...\stm32f10x_usart.c
............\.....\...\stm32f10x_wwdg.c
............\project\cortexm3_macro.s
............\.......\Debug\Exe\example6_TIM.out
............\.......\.....\Obj\bsp.o
............\.......\.....\...\cortexm3_macro.o
............\.......\.....\...\example6_TIM.pbd
............\.......\.....\...\main.o
............\.......\.....\...\stm32f10x_flash.o
............\.......\.....\...\stm32f10x_gpio.o
............\.......\.....\...\stm32f10x_it.o
............\.......\.....\...\stm32f10x_lib.o
............\.......\.....\...\stm32f10x_nvic.o
............\.......\.....\...\stm32f10x_rcc.o
............\.......\.....\...\stm32f10x_tim.o
............\.......\.....\...\stm32f10x_vector.o
............\.......\example6_TIM.dep
............\.......\example6_TIM.ewd
............\.......\example6_TIM.ewp
............\.......\example6_TIM.eww
............\.......\lnkarm_flash.xcl
............\.......\lnkarm_ram.xcl
............\.......\settings\example6_TIM.cspy.bat
............\.......\........\example6_TIM.dbgdt
............\.......\........\example6_TIM.dni
............\.......\........\example6_TIM.wsdt
............\.......\........\example6_TIM_Debug.jlink
............\.......\stm32f10x_flash.icf
............\.......\stm32f10x_ram.icf
............\.......\stm32f10x_vector.c
............\.......\Debug\Exe
............\.......\.....\List
............\.......\.....\Obj
............\FWLib\inc
............\.....\src
............\project\Debug
............\.......\settings
............\App
............\FWLib
............\project
example6_TIM
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