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author | Trygve Laugstøl <trygvis@inamo.no> | 2017-01-25 22:24:18 +0100 |
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committer | Trygve Laugstøl <trygvis@inamo.no> | 2017-01-25 22:29:25 +0100 |
commit | 40e04e3772726829d66c12e69f24b03920d79c67 (patch) | |
tree | 636811bad956798c9d5d22de9e7ba8c799b8d791 /tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/TIM/PWM_Output/readme.txt | |
parent | 2fff65aed2477a503c72629d27e2a330d30c02d1 (diff) | |
download | stm32f103-playground-40e04e3772726829d66c12e69f24b03920d79c67.tar.gz stm32f103-playground-40e04e3772726829d66c12e69f24b03920d79c67.tar.bz2 stm32f103-playground-40e04e3772726829d66c12e69f24b03920d79c67.tar.xz stm32f103-playground-40e04e3772726829d66c12e69f24b03920d79c67.zip |
o Moving tinyprintf and stm libraries under thirdparty.
Diffstat (limited to 'tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/TIM/PWM_Output/readme.txt')
-rw-r--r-- | tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/TIM/PWM_Output/readme.txt | 115 |
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diff --git a/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/TIM/PWM_Output/readme.txt b/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/TIM/PWM_Output/readme.txt deleted file mode 100644 index 469aa30..0000000 --- a/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/TIM/PWM_Output/readme.txt +++ /dev/null @@ -1,115 +0,0 @@ -/** - @page TIM_PWM_Output TIM PWM Output example - - @verbatim - ******************** (C) COPYRIGHT 2011 STMicroelectronics ******************* - * @file TIM/PWM_Output/readme.txt - * @author MCD Application Team - * @version V3.5.0 - * @date 08-April-2011 - * @brief Description of the TIM PWM Output example. - ****************************************************************************** - * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS - * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE - * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY - * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING - * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE - * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS. - ****************************************************************************** - @endverbatim - -@par Example Description - -This example shows how to configure the TIM peripheral in PWM (Pulse Width Modulation) -mode. - -The TIM3CLK frequency is set to SystemCoreClock / 2 (Hz), to get TIM3 counter -clock at 24 MHz the Prescaler is computed as following: - - Prescaler = (TIM3CLK / TIM3 counter clock) - 1 -SystemCoreClock is set to 72 MHz for Low-density, Medium-density, High-density -and Connectivity line devices and to 24 MHz for Value line devices. - -The TIM3 is running at 36 KHz: TIM3 Frequency = TIM3 counter clock/(ARR + 1) - = 24 MHz / 666 = 36 KHz -The TIM3 CCR1 register value is equal to 500, so the TIM3 Channel 1 generates a -PWM signal with a frequency equal to 36 KHz and a duty cycle equal to 50%: -TIM3 Channel1 duty cycle = (TIM3_CCR1/ TIM3_ARR + 1)* 100 = 50% - -The TIM3 CCR2 register value is equal to 375, so the TIM3 Channel 2 generates a -PWM signal with a frequency equal to 36 KHz and a duty cycle equal to 37.5%: -TIM3 Channel2 duty cycle = (TIM3_CCR2/ TIM3_ARR + 1)* 100 = 37.5% - -The TIM3 CCR3 register value is equal to 250, so the TIM3 Channel 3 generates a -PWM signal with a frequency equal to 36 KHz and a duty cycle equal to 25%: -TIM3 Channel3 duty cycle = (TIM3_CCR3/ TIM3_ARR + 1)* 100 = 25% - -The TIM3 CCR4 register value is equal to 125, so the TIM3 Channel 4 generates a -PWM signal with a frequency equal to 36 KHz and a duty cycle equal to 12.5%: -TIM3 Channel4 duty cycle = (TIM3_CCR4/ TIM3_ARR + 1)* 100 = 12.5% - -The PWM waveform can be displayed using an oscilloscope. - -@par Directory contents - - - TIM/PWM_Output/stm32f10x_conf.h Library Configuration file - - TIM/PWM_Output/stm32f10x_it.c Interrupt handlers - - TIM/PWM_Output/stm32f10x_it.h Interrupt handlers header file - - TIM/PWM_Output/main.c Main program - - TIM/PWM_Output/system_stm32f10x.c STM32F10x system source file - -@par Hardware and Software environment - - - This example runs on STM32F10x Connectivity line, High-Density, High-Density - Value line, Medium-Density, XL-Density, Medium-Density Value line, Low-Density - and Low-Density Value line Devices. - - - This example has been tested with STMicroelectronics STM32100E-EVAL (High-Density - Value line), STM32100B-EVAL (Medium-Density Value line), STM3210C-EVAL (Connectivity line), - STM3210E-EVAL (High-Density and XL-Density) and STM3210B-EVAL (Medium-Density) - evaluation boards and can be easily tailored to any other supported device - and development board. - - - STM3210C-EVAL Set-up - - Connect the following pins(TIM3 full remapping pins) to an oscilloscope to monitor the different - waveforms: - - PC.06: (TIM3_CH1) - - PC.07: (TIM3_CH2) - - PC.08: (TIM3_CH3) - - PC.09: (TIM3_CH4) - - - STM32100B-EVAL, STM3210E-EVAL, STM32100E-EVAL and STM3210B-EVAL Set-up - - Connect the following pins to an oscilloscope to monitor the different - waveforms: - - PA.06: (TIM3_CH1) - - PA.07: (TIM3_CH2) - - PB.00: (TIM3_CH3) - - PB.01: (TIM3_CH4) - -@par How to use it ? - -In order to make the program work, you must do the following : - - Copy all source files from this example folder to the template folder under - Project\STM32F10x_StdPeriph_Template - - Open your preferred toolchain - - Rebuild all files and load your image into target memory - - Run the example - -@note - - Low-density Value line devices are STM32F100xx microcontrollers where the - Flash memory density ranges between 16 and 32 Kbytes. - - Low-density devices are STM32F101xx, STM32F102xx and STM32F103xx - microcontrollers where the Flash memory density ranges between 16 and 32 Kbytes. - - Medium-density Value line devices are STM32F100xx microcontrollers where - the Flash memory density ranges between 64 and 128 Kbytes. - - Medium-density devices are STM32F101xx, STM32F102xx and STM32F103xx - microcontrollers where the Flash memory density ranges between 64 and 128 Kbytes. - - High-density Value line devices are STM32F100xx microcontrollers where - the Flash memory density ranges between 256 and 512 Kbytes. - - High-density devices are STM32F101xx and STM32F103xx microcontrollers where - the Flash memory density ranges between 256 and 512 Kbytes. - - XL-density devices are STM32F101xx and STM32F103xx microcontrollers where - the Flash memory density ranges between 512 and 1024 Kbytes. - - Connectivity line devices are STM32F105xx and STM32F107xx microcontrollers. - - * <h3><center>© COPYRIGHT 2011 STMicroelectronics</center></h3> - */ |