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annotate libs/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/DAC/TwoChannels_TriangleWave/readme.txt @ 8:58d76cf522ff

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Split out code into separate files.
author Daniel O'Connor <darius@dons.net.au>
date Sat, 04 Feb 2012 13:29:31 +1030
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1 /**
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2 @page DAC_TwoChannels_TriangleWave DAC two channels triangle 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/TwoChannels_TriangleWave/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 two channels triangle 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 two DAC channels to generate two different
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24 signals with triangle waves on each DAC Channel output.
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25
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26 DAC channels conversion are configured to be triggered by TIM2 TRGO with triangle
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27 wave generation. 12bit right data alignment is selected since we choose to access
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28 both DAC_DHR12R1 and DAC_DHR12R2 registers.
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29 A triangle amplitude of 2047 is selected for DAC channel1 and 1023 for DAC channel2.
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30 Both DAC channels are then enabled. DAC Channel1 DHR12R1 and DAC channel2 DHR12R2
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31 registers are set to have a base output voltage of VREF/16 on each output.
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32
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33 Once TIM2 is enabled, each TIM2 TRGO update event trigger both DAC channels start
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34 of conversion. The triangle counter is incremented, added to the base value and
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35 applied to the corresponding DAC channel output. The same calculation is repeated
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36 on each trigger.
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37 The triangle waves can be visualized by connecting both PA.04 and PA.05 pins to
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38 an oscilloscope.
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39
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40
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41 @par Directory contents
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42
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43 - DAC/TwoChannels_TriangleWave/stm32f10x_conf.h Library Configuration file
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44 - DAC/TwoChannels_TriangleWave/stm32f10x_it.c Interrupt handlers
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45 - DAC/TwoChannels_TriangleWave/stm32f10x_it.h Header for stm32f10x_it.c
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46 - DAC/TwoChannels_TriangleWave/main.c Main program
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47 - DAC/TwoChannels_TriangleWave/system_stm32f10x.c STM32F10x system source file
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48
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49 @par Hardware and Software environment
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50
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51 - This example runs on STM32F10x Connectivity line, High-Density, XL-Density,
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52 Medium-Density Value line, High-Density Value line and Low-Density Value
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53 line Devices.
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54
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55 - This example has been tested with STMicroelectronics STM32100B-EVAL
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56 (Medium-Density Value line), STM3210C-EVAL (Connectivity line), STM32100E-EVAL
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57 (High-Density Value line) and STM3210E-EVAL (High-Density and XL-Density)
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58 evaluation boards and can be easily tailored to any other supported device
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59 and development board.
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60
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61 - STM32100B-EVAL Set-up
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62 - Connect PA.04 and PA.05 pins to an oscilloscope
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63 @note JP2 should be open
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64
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65 - STM3210C-EVAL Set-up
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66 - Only PA.04 can be monitored on an oscilloscope, PA.05 is used by other
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67 module (Motor control connector) that prevents to have DAC channel output
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68 on it. However, if you don't use Motor control connector, you can remove
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69 the 0ohm resistor R84 and thus PA.05 can be used for DAC output.
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70 @note Make shure that jumper JP15 is open.
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71
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72 - STM3210E-EVAL Set-up
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73 - Connect PA.04 and PA.05 pins to an oscilloscope
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74
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75 - STM32100E-EVAL Set-up
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76 - Connect PA.04 and PA.05 pins to an oscilloscope
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77
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78 @par How to use it ?
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79
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80 In order to make the program work, you must do the following :
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81 - Copy all source files from this example folder to the template folder under
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82 Project\STM32F10x_StdPeriph_Template
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83 - Open your preferred toolchain
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84 - Rebuild all files and load your image into target memory
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85 - Run the example
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86
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87 @note
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88 - Low-density Value line devices are STM32F100xx microcontrollers where the
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89 Flash memory density ranges between 16 and 32 Kbytes.
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90 - Low-density devices are STM32F101xx, STM32F102xx and STM32F103xx
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91 microcontrollers where the Flash memory density ranges between 16 and 32 Kbytes.
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92 - Medium-density Value line devices are STM32F100xx microcontrollers where
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93 the Flash memory density ranges between 64 and 128 Kbytes.
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94 - Medium-density devices are STM32F101xx, STM32F102xx and STM32F103xx
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95 microcontrollers where the Flash memory density ranges between 64 and 128 Kbytes.
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96 - High-density Value line devices are STM32F100xx microcontrollers where
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97 the Flash memory density ranges between 256 and 512 Kbytes.
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98 - High-density devices are STM32F101xx and STM32F103xx microcontrollers where
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99 the Flash memory density ranges between 256 and 512 Kbytes.
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100 - XL-density devices are STM32F101xx and STM32F103xx microcontrollers where
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101 the Flash memory density ranges between 512 and 1024 Kbytes.
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102 - Connectivity line devices are STM32F105xx and STM32F107xx microcontrollers.
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103
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104 * <h3><center>&copy; COPYRIGHT 2011 STMicroelectronics</center></h3>
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105 */