diff options
Diffstat (limited to 'tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/TIM/DMA/readme.txt')
| -rw-r--r-- | tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/TIM/DMA/readme.txt | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/TIM/DMA/readme.txt b/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/TIM/DMA/readme.txt new file mode 100644 index 0000000..436b3fb --- /dev/null +++ b/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/TIM/DMA/readme.txt @@ -0,0 +1,95 @@ +/** + @page TIM_DMA TIM DMA example + + @verbatim + ******************** (C) COPYRIGHT 2011 STMicroelectronics ******************* + * @file TIM/DMA/readme.txt + * @author MCD Application Team + * @version V3.5.0 + * @date 08-April-2011 + * @brief Description of the TIM DMA 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 provides a description of how to use DMA with TIM1 Update request +to transfer Data from memory to TIM1 Capture Compare Register3. + +TIM1CLK = SystemCoreClock, Prescaler = 0, TIM1 counter clock = SystemCoreClock +SystemCoreClock is set to 72 MHz for Low-density, Medium-density, High-density +and Connectivity line devices. For Low-Density Value line, Medium-Density and +High-Density Value line devices, SystemCoreClock is set to 24 MHz. + +The objective is to configure TIM1 channel 3 to generate complementary PWM +signal with a frequency equal to 17.57 KHz: + - TIM1_Period = (SystemCoreClock / 17570) - 1 +and a variable duty cycle that is changed by the DMA after a specific number of +Update DMA request. + +The number of this repetitive requests is defined by the TIM1 Repetion counter, +each 3 Update Requests, the TIM1 Channel 3 Duty Cycle changes to the next new +value defined by the SRC_Buffer. + + +@par Directory contents + + - TIM/DMA/stm32f10x_conf.h Library Configuration file + - TIM/DMA/stm32f10x_it.c Interrupt handlers + - TIM/DMA/stm32f10x_it.h Interrupt handlers header file + - TIM/DMA/main.c Main program + - TIM/DMA/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, STM32100B-EVAL, STM3210C-EVAL, STM3210E-EVAL, STM32100E-EVAL and STM3210B-EVAL Set-up + - Connect the following pins to an oscilloscope to monitor the different + waveforms: + - TIM1 CH3 (PA.10) + - TIM1 CH3N (PB.15) + +@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> + */ |