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annotate libs/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/TIM/TIM1_Synchro/readme.txt @ 8:58d76cf522ff

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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 TIM_TIM1_Synchro TIM1 Synchro 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 TIM/TIM1_Synchro/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 TIM TIM1 Synchro 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 shows how to synchronize TIM1 and Timers (TIM3 and TIM4) in parallel mode.
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24
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25 Timers synchronisation in parallel mode:
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26
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27 1/ TIM1 is configured as Master Timer:
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28 - PWM Mode is used
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29 - The TIM1 Update event is used as Trigger Output
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30
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31 2/ TIM3 and TIM4 are slaves for TIM1,
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32 - PWM Mode is used
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33 - The ITR0(TIM1) is used as input trigger for both slaves
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34 - Gated mode is used, so starts and stops of slaves counters
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35 are controlled by the Master trigger output signal(update event).
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36
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37 o For Low-density, Medium-density, High-density and Connectivity line devices:
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38 The TIMxCLK is fixed to 72 MHz, Prescaler = 0 so the TIM1 counter clock is 72 MHz.
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39
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40 The Master Timer TIM1 is running at:
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41 TIM1 frequency = TIM1 counter clock / (TIM1_Period + 1) = 281.250 KHz
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42 and the duty cycle is equal to: TIM1_CCR1/(TIM1_ARR + 1) = 50%
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43
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44 The TIM3 is running at:
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45 (TIM1 frequency)/ ((TIM3 period +1)* (Repetition_Counter+1)) = 18.750 KHz and
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46 a duty cycle equal to TIM3_CCR1/(TIM3_ARR + 1) = 33.3%
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47
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48 The TIM4 is running at:
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49 (TIM1 frequency)/ ((TIM4 period +1)* (Repetition_Counter+1)) = 28.125 KHz and
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50 a duty cycle equal to TIM4_CCR1/(TIM4_ARR + 1) = 50%
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51
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52 o For Value line devices:
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53 The TIMxCLK is fixed to 24 MHz, Prescaler = 0 so the TIM1 counter clock is 24 MHz.
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54 TIM1 frequency = 93.75 KHz
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55 TIM3 frequency = 6.25 KHz
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56 TIM4 frequency = 9.375 KHz
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57
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58 @par Directory contents
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59
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60 - TIM/TIM1_Synchro/stm32f10x_conf.h Library Configuration file
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61 - TIM/TIM1_Synchro/stm32f10x_it.c Interrupt handlers
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62 - TIM/TIM1_Synchro/stm32f10x_it.h Interrupt handlers header file
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63 - TIM/TIM1_Synchro/main.c Main program
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64 - TIM/TIM1_Synchro/system_stm32f10x.c STM32F10x system source file
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65
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66 @par Hardware and Software environment
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67
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68 - This example runs on STM32F10x Connectivity line, High-Density, High-Density
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69 Value line, Medium-Density, XL-Density, Medium-Density Value line, Low-Density
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70 and Low-Density Value line Devices.
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71
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72 - This example has been tested with STMicroelectronics STM32100E-EVAL (High-Density
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73 Value line), STM32100B-EVAL (Medium-Density Value line), STM3210C-EVAL (Connectivity line),
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74 STM3210E-EVAL (High-Density and XL-Density) and STM3210B-EVAL (Medium-Density)
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75 evaluation boards and can be easily tailored to any other supported device
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76 and development board.
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77
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78
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79 - STM3210C-EVAL Set-up
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80 - Connect the following pins to an oscilloscope to monitor the different waveforms:
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81 - TIM1 CH1 (PE.08) Remapped pin
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82 - TIM3 CH1 (PC.06) Remapped pin
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83 - TIM4 CH1 (PB.06)
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84
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85 - STM32100B-EVAL, STM3210E-EVAL, STM32100E-EVAL and STM3210B-EVAL Set-up
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86 - Connect the following pins to an oscilloscope to monitor the different waveforms:
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87 - TIM1 CH1 (PA.08)
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88 - TIM3 CH1 (PA.06)
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89 - TIM4 CH1 (PB.06)
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90
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91 @par How to use it ?
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92
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93 In order to make the program work, you must do the following :
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94 - Copy all source files from this example folder to the template folder under
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95 Project\STM32F10x_StdPeriph_Template
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96 - Open your preferred toolchain
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97 - Rebuild all files and load your image into target memory
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98 - Run the example
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99
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100 @note
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101 - Low-density Value line devices are STM32F100xx microcontrollers where the
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102 Flash memory density ranges between 16 and 32 Kbytes.
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103 - Low-density devices are STM32F101xx, STM32F102xx and STM32F103xx
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104 microcontrollers where the Flash memory density ranges between 16 and 32 Kbytes.
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105 - Medium-density Value line devices are STM32F100xx microcontrollers where
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106 the Flash memory density ranges between 64 and 128 Kbytes.
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107 - Medium-density devices are STM32F101xx, STM32F102xx and STM32F103xx
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108 microcontrollers where the Flash memory density ranges between 64 and 128 Kbytes.
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109 - High-density Value line devices are STM32F100xx microcontrollers where
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110 the Flash memory density ranges between 256 and 512 Kbytes.
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111 - High-density devices are STM32F101xx and STM32F103xx microcontrollers where
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112 the Flash memory density ranges between 256 and 512 Kbytes.
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113 - XL-density devices are STM32F101xx and STM32F103xx microcontrollers where
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114 the Flash memory density ranges between 512 and 1024 Kbytes.
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115 - Connectivity line devices are STM32F105xx and STM32F107xx microcontrollers.
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116
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117 * <h3><center>&copy; COPYRIGHT 2011 STMicroelectronics</center></h3>
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118 */