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diff --git a/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/DAC/TwoChannels_TriangleWave/readme.txt b/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/DAC/TwoChannels_TriangleWave/readme.txt new file mode 100644 index 0000000..fb3dd97 --- /dev/null +++ b/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/DAC/TwoChannels_TriangleWave/readme.txt @@ -0,0 +1,105 @@ +/** + @page DAC_TwoChannels_TriangleWave DAC two channels triangle wave example + + @verbatim + ******************** (C) COPYRIGHT 2011 STMicroelectronics ******************* + * @file DAC/TwoChannels_TriangleWave/readme.txt + * @author MCD Application Team + * @version V3.5.0 + * @date 08-April-2011 + * @brief Description of the DAC two channels triangle wave 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 describes how to use two DAC channels to generate two different +signals with triangle waves on each DAC Channel output. + +DAC channels conversion are configured to be triggered by TIM2 TRGO with triangle +wave generation. 12bit right data alignment is selected since we choose to access +both DAC_DHR12R1 and DAC_DHR12R2 registers. +A triangle amplitude of 2047 is selected for DAC channel1 and 1023 for DAC channel2. +Both DAC channels are then enabled. DAC Channel1 DHR12R1 and DAC channel2 DHR12R2 +registers are set to have a base output voltage of VREF/16 on each output. + +Once TIM2 is enabled, each TIM2 TRGO update event trigger both DAC channels start +of conversion. The triangle counter is incremented, added to the base value and +applied to the corresponding DAC channel output. The same calculation is repeated +on each trigger. +The triangle waves can be visualized by connecting both PA.04 and PA.05 pins to +an oscilloscope. + + +@par Directory contents + + - DAC/TwoChannels_TriangleWave/stm32f10x_conf.h Library Configuration file + - DAC/TwoChannels_TriangleWave/stm32f10x_it.c Interrupt handlers + - DAC/TwoChannels_TriangleWave/stm32f10x_it.h Header for stm32f10x_it.c + - DAC/TwoChannels_TriangleWave/main.c Main program + - DAC/TwoChannels_TriangleWave/system_stm32f10x.c STM32F10x system source file + +@par Hardware and Software environment + + - This example runs on STM32F10x Connectivity line, High-Density, XL-Density, + Medium-Density Value line, High-Density Value line and Low-Density Value + line Devices. + + - This example has been tested with STMicroelectronics STM32100B-EVAL + (Medium-Density Value line), STM3210C-EVAL (Connectivity line), STM32100E-EVAL + (High-Density Value line) and STM3210E-EVAL (High-Density and XL-Density) + evaluation boards and can be easily tailored to any other supported device + and development board. + + - STM32100B-EVAL Set-up + - Connect PA.04 and PA.05 pins to an oscilloscope + @note JP2 should be open + + - STM3210C-EVAL Set-up + - Only PA.04 can be monitored on an oscilloscope, PA.05 is used by other + module (Motor control connector) that prevents to have DAC channel output + on it. However, if you don't use Motor control connector, you can remove + the 0ohm resistor R84 and thus PA.05 can be used for DAC output. + @note Make shure that jumper JP15 is open. + + - STM3210E-EVAL Set-up + - Connect PA.04 and PA.05 pins to an oscilloscope + + - STM32100E-EVAL Set-up + - Connect PA.04 and PA.05 pins to an oscilloscope + +@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> + */ |