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annotate libs/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/DAC/DualModeDMA_SineWave/readme.txt @ 0:c59513fd84fb
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author | Daniel O'Connor <darius@dons.net.au> |
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date | Mon, 03 Oct 2011 21:19:15 +1030 |
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1 /** |
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2 @page DAC_DualModeDMA_SineWave DAC dual mode sine wave example |
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3 |
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4 @verbatim |
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5 ******************** (C) COPYRIGHT 2011 STMicroelectronics ******************* |
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6 * @file DAC/DualModeDMA_SineWave/readme.txt |
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7 * @author MCD Application Team |
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8 * @version V3.5.0 |
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9 * @date 08-April-2011 |
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10 * @brief Description of the DAC dual mode sine wave example. |
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11 ****************************************************************************** |
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12 * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS |
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13 * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE |
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14 * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY |
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15 * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING |
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16 * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE |
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17 * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS. |
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18 ****************************************************************************** |
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19 @endverbatim |
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20 |
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21 @par Example Description |
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22 |
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23 This example describes how to use DAC dual channel mode with DMA to generate sine |
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24 waves on both DAC channels outputs. |
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25 |
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26 Both DAC channels conversions are configured to be triggered by TIM2 TRGO triggers |
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27 and without noise/triangle wave generation. 12bit right data alignment is selected |
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28 since we choose to access DAC_DHR12RD register. DMA2 channel4 is configured to |
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29 transfer continuously, word by word, a 32-word buffer to the dual DAC register |
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30 DAC_DHR12RD. |
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31 |
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32 The transferred 32buffer is made to have a sine wave generation on each DAC channel |
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33 output. Both DAC channels are then enabled. Only DAC channel2 DMA capability is enabled. |
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34 |
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35 Once TIM2 is enabled, each TIM2 TRGO update event generate a DMA request which |
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36 transfer data to the dual DAC register and DAC conversion is started. The sine |
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37 waves can be visualized by connecting both PA.04 and PA.05 pins to an oscilloscope. |
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38 |
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39 |
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40 @par Directory contents |
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41 |
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42 - DAC/DualModeDMA_SineWave/stm32f10x_conf.h Library Configuration file |
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43 - DAC/DualModeDMA_SineWave/stm32f10x_it.c Interrupt handlers |
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44 - DAC/DualModeDMA_SineWave/stm32f10x_it.h Header for stm32f10x_it.c |
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45 - DAC/DualModeDMA_SineWave/main.c Main program |
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46 - DAC/DualModeDMA_SineWave/system_stm32f10x.c STM32F10x system source file |
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47 |
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48 @par Hardware and Software environment |
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49 |
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50 - This example runs on STM32F10x Connectivity line, High-Density, High-Density |
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51 Value line, XL-Density, Medium-Density Value line and Low-Density Value line |
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52 Devices. |
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53 |
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54 - This example has been tested with STMicroelectronics STM32100E-EVAL |
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55 (High-Density Value line), STM32100B-EVAL (Medium-Density Value line), |
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56 STM3210C-EVAL (Connectivity line) and STM3210E-EVAL (High-Density and XL-Density) |
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57 evaluation boards and can be easily tailored to any other supported device |
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58 and development board. |
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59 |
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60 - STM32100E-EVAL Set-up |
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61 - Connect PA.04 and PA.05 pins to an oscilloscope |
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62 |
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63 - STM32100B-EVAL Set-up |
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64 - Connect PA.04 and PA.05 pins to an oscilloscope |
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65 |
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66 - STM3210C-EVAL Set-up |
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67 - Only PA.04 can be monitored on an oscilloscope, PA.05 is used by other |
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68 module (Motor control connector) that prevents to have DAC channel output |
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69 on it. However, if you don't use Motor control connector, you can remove |
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70 the 0ohm resistor R84 and thus PA.05 can be used for DAC output. |
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71 @note Make shure that jumper JP15 is open. |
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72 |
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73 - STM3210E-EVAL Set-up |
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74 - Connect PA.04 and PA.05 pins to an oscilloscope |
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75 |
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76 |
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77 @par How to use it ? |
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78 |
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79 In order to make the program work, you must do the following : |
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80 - Copy all source files from this example folder to the template folder under |
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81 Project\STM32F10x_StdPeriph_Template |
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82 - Open your preferred toolchain |
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83 - Rebuild all files and load your image into target memory |
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84 - Run the example |
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85 |
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86 @note |
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87 - Low-density Value line devices are STM32F100xx microcontrollers where the |
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88 Flash memory density ranges between 16 and 32 Kbytes. |
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89 - Low-density devices are STM32F101xx, STM32F102xx and STM32F103xx |
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90 microcontrollers where the Flash memory density ranges between 16 and 32 Kbytes. |
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91 - Medium-density Value line devices are STM32F100xx microcontrollers where |
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92 the Flash memory density ranges between 64 and 128 Kbytes. |
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93 - Medium-density devices are STM32F101xx, STM32F102xx and STM32F103xx |
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94 microcontrollers where the Flash memory density ranges between 64 and 128 Kbytes. |
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95 - High-density devices are STM32F101xx and STM32F103xx microcontrollers where |
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96 the Flash memory density ranges between 256 and 512 Kbytes. |
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97 - High-density Value line devices are STM32F100xx microcontrollers where |
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98 the Flash memory density ranges between 256 and 512 Kbytes. |
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99 - XL-density devices are STM32F101xx and STM32F103xx microcontrollers where |
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100 the Flash memory density ranges between 512 and 1024 Kbytes. |
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101 - Connectivity line devices are STM32F105xx and STM32F107xx microcontrollers. |
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102 |
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103 * <h3><center>© COPYRIGHT 2011 STMicroelectronics</center></h3> |
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104 */ |