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diff --git a/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/TIM/TimeBase/readme.txt b/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/TIM/TimeBase/readme.txt new file mode 100644 index 0000000..f893802 --- /dev/null +++ b/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/TIM/TimeBase/readme.txt @@ -0,0 +1,110 @@ +/** + @page TIM_TimeBase TIM Time Base example + + @verbatim + ******************** (C) COPYRIGHT 2011 STMicroelectronics ******************* + * @file TIM/TimeBase/readme.txt + * @author MCD Application Team + * @version V3.5.0 + * @date 08-April-2011 + * @brief Description of the TIM Time Base 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 Output Compare Timing +mode with the corresponding Interrupt requests for each channel in order to generate +4 different time bases. + +The TIM2CLK frequency is set to SystemCoreClock / 2 (Hz), to get TIM2 counter +clock at 6 MHz so the Prescaler is computed as following: + - Prescaler = (TIM2CLK / TIM2 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 Low-Density Value line, +Medium-Density Value line and High-Density devices. + +The TIM2 CC1 register value is equal to 40961, +CC1 update rate = TIM2 counter clock / CCR1_Val = 146.48 Hz, +so the TIM2 Channel 1 generates an interrupt each 6.8ms + +The TIM2 CC2 register is equal to 27309, +CC2 update rate = TIM2 counter clock / CCR2_Val = 219.7 Hz +so the TIM2 Channel 2 generates an interrupt each 4.55ms + +The TIM2 CC3 register is equal to 13654, +CC3 update rate = TIM2 counter clock / CCR3_Val = 439.4Hz +so the TIM2 Channel 3 generates an interrupt each 2.27ms + +The TIM2 CC4 register is equal to 6826, +CC4 update rate = TIM2 counter clock / CCR4_Val = 878.9 Hz +so the TIM2 Channel 4 generates an interrupt each 1.13ms. + +When the counter value reaches the Output compare registers values, the Output +Compare interrupts are generated and, in the handler routine, 4 pins(PC.06, PC.07, +PC.08 and PC.09) are toggled with the following frequencies: + +- PC.06: 73.24Hz (CC1) +- PC.07: 109.8Hz (CC2) +- PC.08: 219.7Hz (CC3) +- PC.09: 439.4Hz (CC4) + +@par Directory contents + + - TIM/TimeBase/stm32f10x_conf.h Library Configuration file + - TIM/TimeBase/stm32f10x_it.c Interrupt handlers + - TIM/TimeBase/stm32f10x_it.h Interrupt handlers header file + - TIM/TimeBase/main.c Main program + - TIM/TimeBase/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. + + - STM32100E-EVAL, STM3210E-EVAL, STM32100E-EVAL, STM3210B-EVAL and STM3210C-EVAL Set-up + - Connect an oscilloscope on PC.06, PC.07, PC.08 and PC.09 to show the + different Time Base signals. + +@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> + */ |