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comparison libs/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/TIM/TIM9_OCToggle/readme.txt @ 0:c59513fd84fb
Initial commit of STM32 test code.
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 /** | |
2 @page TIM9_OCToggle TIM9 OC Toggle example | |
3 | |
4 @verbatim | |
5 ******************** (C) COPYRIGHT 2011 STMicroelectronics ******************* | |
6 * @file TIM/TIM9_OCToggle/readme.txt | |
7 * @author MCD Application Team | |
8 * @version V3.5.0 | |
9 * @date 08-April-2011 | |
10 * @brief Description of the TIM9 OC Toggle example. | |
11 ****************************************************************************** | |
12 * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS | |
13 * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE | |
14 * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY | |
15 * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING | |
16 * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE | |
17 * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS. | |
18 ****************************************************************************** | |
19 @endverbatim | |
20 | |
21 @par Example Description | |
22 | |
23 This example shows how to configure the TIM9 peripheral to generate two different | |
24 signals with two different frequencies. | |
25 | |
26 The TIM9CLK frequency is set to SystemCoreClock (72 MHz), and we want to get TIM9 | |
27 counter clock at 24 MHz so the Prescaler is computed as following: | |
28 - Prescaler = (TIM9CLK / TIM9 counter clock) - 1 | |
29 | |
30 The TIM9 CCR1 register value is equal to 32768: | |
31 CC1 update rate = TIM9 counter clock / CCR1Val = 732.4 Hz, | |
32 so the TIM9 Channel 1 generates a periodic signal with a frequency equal to 366.2 Hz. | |
33 | |
34 The TIM9 CCR2 register is equal to 16384: | |
35 CC2 update rate = TIM9 counter clock / CCR2Val = 1464.8 | |
36 so the TIM9 channel 2 generates a periodic signal with a frequency equal to 732.4 Hz. | |
37 | |
38 | |
39 @par Directory contents | |
40 | |
41 - TIM/TIM9_OCToggle/stm32f10x_conf.h Library Configuration file | |
42 - TIM/TIM9_OCToggle/stm32f10x_it.c Interrupt handlers | |
43 - TIM/TIM9_OCToggle/stm32f10x_it.h Interrupt handlers header file | |
44 - TIM/TIM9_OCToggle/main.c Main program | |
45 - TIM/TIM9_OCToggle/system_stm32f10x.c STM32F10x system source file | |
46 | |
47 @par Hardware and Software environment | |
48 | |
49 - This example runs only on STM32F10x XL-Density Devices. | |
50 | |
51 - This example has been tested with STMicroelectronics STM3210E-EVAL (XL-Density) | |
52 evaluation board and can be easily tailored to any development board. | |
53 | |
54 - STM3210E-EVAL Set-up | |
55 - Connect the TIM9 pins to an oscilloscope to monitor the different waveforms: | |
56 - PA.02 (TIM9_CH1) | |
57 - PA.03 (TIM9_CH2) | |
58 | |
59 | |
60 @par How to use it ? | |
61 | |
62 In order to make the program work, you must do the following : | |
63 - Copy all source files from this example folder to the template folder under | |
64 Project\STM32F10x_StdPeriph_Template | |
65 - Open your preferred toolchain | |
66 - Rebuild all files and load your image into target memory | |
67 - Run the example | |
68 | |
69 @note | |
70 - Low-density Value line devices are STM32F100xx microcontrollers where the | |
71 Flash memory density ranges between 16 and 32 Kbytes. | |
72 - Low-density devices are STM32F101xx, STM32F102xx and STM32F103xx | |
73 microcontrollers where the Flash memory density ranges between 16 and 32 Kbytes. | |
74 - Medium-density Value line devices are STM32F100xx microcontrollers where | |
75 the Flash memory density ranges between 64 and 128 Kbytes. | |
76 - Medium-density devices are STM32F101xx, STM32F102xx and STM32F103xx | |
77 microcontrollers where the Flash memory density ranges between 64 and 128 Kbytes. | |
78 - High-density Value line devices are STM32F100xx microcontrollers where | |
79 the Flash memory density ranges between 256 and 512 Kbytes. | |
80 - High-density devices are STM32F101xx and STM32F103xx microcontrollers where | |
81 the Flash memory density ranges between 256 and 512 Kbytes. | |
82 - XL-density devices are STM32F101xx and STM32F103xx microcontrollers where | |
83 the Flash memory density ranges between 512 and 1024 Kbytes. | |
84 - Connectivity line devices are STM32F105xx and STM32F107xx microcontrollers. | |
85 | |
86 * <h3><center>© COPYRIGHT 2011 STMicroelectronics</center></h3> | |
87 */ |