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Initial commit of STM32 test code.
author Daniel O'Connor <darius@dons.net.au>
date Mon, 03 Oct 2011 21:19:15 +1030
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1 /**
2 @page WWDG_Reset WWDG Reset example
3
4 @verbatim
5 ******************** (C) COPYRIGHT 2011 STMicroelectronics *******************
6 * @file WWDG/WWDG_Reset/readme.txt
7 * @author MCD Application Team
8 * @version V3.5.0
9 * @date 08-April-2011
10 * @brief Description of the WWDG Reset 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 update at regular period the WWDG counter and how to
24 simulate a software fault generating an MCU WWDG reset on expiry of a programmed
25 time period.
26
27 The WWDG timeout is set to 65.53ms and the refresh window is set to 80.
28 The WWDG counter is refreshed each 50ms in the main program infinite loop to
29 prevent a WWDG reset.
30 LED2 is also toggled each 50ms indicating that the program is running.
31
32 An EXTI Line is connected to a GPIO pin, and configured to generate an interrupt
33 on the rising edge of the signal.
34
35 The EXTI Line is used to simulate a software failure: once the EXTI Line event
36 occurs, by pressing the Key push-button, the corresponding interrupt is served.
37 In the ISR, a write to invalid address generates a Hardfault exception containing
38 an infinite loop and preventing to return to main program (the WWDG counter is
39 not refreshed).
40 As a result, when the WWDG counter falls to 63, the WWDG reset occurs.
41 If the WWDG reset is generated, after the system resumes from reset, LED1 turns on.
42
43 If the EXTI Line event does not occur, the WWDG counter is indefinitely refreshed
44 in the main program infinite loop, and there is no WWDG reset.
45
46 In this example the system clock is set to 24 MHz on Value line devices and to
47 72 MHz on other devices.
48
49
50 @par Directory contents
51
52 - WWDG/WWDG_Reset/stm32f10x_conf.h Library Configuration file
53 - WWDG/WWDG_Reset/stm32f10x_it.c Interrupt handlers
54 - WWDG/WWDG_Reset/stm32f10x_it.h Header for stm32f10x_it.c
55 - WWDG/WWDG_Reset/main.c Main program
56 - WWDG/WWDG_Reset/system_stm32f10x.c STM32F10x system source file
57
58 @par Hardware and Software environment
59
60 - This example runs on STM32F10x Connectivity line, High-Density, High-Density
61 Value line, Medium-Density, XL-Density, Medium-Density Value line, Low-Density
62 and Low-Density Value line Devices.
63
64 - This example has been tested with STMicroelectronics STM32100E-EVAL (High-Density
65 Value line), STM32100B-EVAL (Medium-Density Value line), STM3210C-EVAL (Connectivity line),
66 STM3210E-EVAL (High-Density and XL-Density)and STM3210B-EVAL (Medium-Density)
67 evaluation boards and can be easily tailored to any other supported device
68 and development board.
69 To select the STMicroelectronics evaluation board used to run the example,
70 uncomment the corresponding line in stm32_eval.h file (under Utilities\STM32_EVAL)
71
72 - STM32100E-EVAL Set-up
73 - Use LD1 and LD2 leds connected respectively to PF.06 and PF.07 pins
74 - Use the KEY push button connected to PG.08 pin (EXTI Line8).
75
76 - STM32100B-EVAL Set-up
77 - Use LD1 and LD2 leds connected respectively to PC.06 and PC.07 pins
78 - Use the KEY push button connected to PB.09 pin (EXTI Line9).
79
80 - STM3210C-EVAL Set-up
81 - Use LD1 and LD2 connected respectively to PD.07 and PD.13 pins
82 - Use the Key push-button connected to pin PB.09 (EXTI Line9).
83
84 - STM3210E-EVAL Set-up
85 - Use LD1 and LD2 leds connected respectively to PF.06 and PF.07 pins
86 - Use the KEY push button connected to PG.08 pin (EXTI Line8).
87
88 - STM3210B-EVAL Set-up
89 - Use LD1 and LD2 leds connected respectively to PC.06 and PC.07 pins
90 - Use the KEY push button connected to PB.09 pin (EXTI Line9).
91
92 @par How to use it ?
93
94 In order to make the program work, you must do the following :
95 - Copy all source files from this example folder to the template folder under
96 Project\STM32F10x_StdPeriph_Template
97 - Open your preferred toolchain
98 - Rebuild all files and load your image into target memory
99 - Run the example
100
101 @note
102 - Low-density Value line devices are STM32F100xx microcontrollers where the
103 Flash memory density ranges between 16 and 32 Kbytes.
104 - Low-density devices are STM32F101xx, STM32F102xx and STM32F103xx
105 microcontrollers where the Flash memory density ranges between 16 and 32 Kbytes.
106 - Medium-density Value line devices are STM32F100xx microcontrollers where
107 the Flash memory density ranges between 64 and 128 Kbytes.
108 - Medium-density devices are STM32F101xx, STM32F102xx and STM32F103xx
109 microcontrollers where the Flash memory density ranges between 64 and 128 Kbytes.
110 - High-density Value line devices are STM32F100xx microcontrollers where
111 the Flash memory density ranges between 256 and 512 Kbytes.
112 - High-density devices are STM32F101xx and STM32F103xx microcontrollers where
113 the Flash memory density ranges between 256 and 512 Kbytes.
114 - XL-density devices are STM32F101xx and STM32F103xx microcontrollers where
115 the Flash memory density ranges between 512 and 1024 Kbytes.
116 - Connectivity line devices are STM32F105xx and STM32F107xx microcontrollers.
117
118 * <h3><center>&copy; COPYRIGHT 2011 STMicroelectronics</center></h3>
119 */