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comparison libs/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/FLASH/Write_Protection/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 FLASH_Write_Protection FLASH Write Protection example | |
3 | |
4 @verbatim | |
5 ******************** (C) COPYRIGHT 2011 STMicroelectronics ******************* | |
6 * @file FLASH/Write_Protection/readme.txt | |
7 * @author MCD Application Team | |
8 * @version V3.5.0 | |
9 * @date 08-April-2011 | |
10 * @brief Description of the FLASH Write Protection 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 provides a description of how to enable and disable the write protection | |
24 for the STM32F10x FLASH: | |
25 | |
26 - Enable Write protection: | |
27 To enable the Write Protection, uncomment the line "#define WRITE_PROTECTION_ENABLE" | |
28 in main.c file. | |
29 To protect a set of pages, the user has to call the function FLASH_EraseOptionBytes | |
30 to erase all the option bytes then to call the function FLASH_EnableWriteProtection. | |
31 The parameter of the later function will define the number of pages to be protected | |
32 (The desired pages and already protected pages). | |
33 To load the new option byte values, a system Reset is necessary, for this, the | |
34 function NVIC_SystemReset() is used. | |
35 | |
36 - Disable Write protection: | |
37 To disable the Write Protection, uncomment the line "#define WRITE_PROTECTION_DISABLE" | |
38 in main.c file. | |
39 To disable the write protection of the STM32F10x Flash, an erase of the Option | |
40 Bytes is necessary by the function FLASH_EraseOptionBytes, then call the function | |
41 FLASH_EnableWriteProtection to protect the pags that are already protected. | |
42 To load the new option byte values, a system Reset is necessary, for this, the | |
43 function NVIC_SystemReset() is used. | |
44 | |
45 - Program the selected pages: | |
46 To program the desired pages (if the flash is not write protected) uncomment the line | |
47 "#define FLASH_PAGE_PROGRAM" in main.c file. | |
48 | |
49 If the desired pages are not write protected, an erase and a write operation are | |
50 performed. | |
51 | |
52 | |
53 @par Directory contents | |
54 | |
55 - FLASH/Write_Protection/stm32f10x_conf.h Library Configuration file | |
56 - FLASH/Write_Protection/stm32f10x_it.h Interrupt handlers header file | |
57 - FLASH/Write_Protection/stm32f10x_it.c Interrupt handlers | |
58 - FLASH/Write_Protection/main.c Main program | |
59 - FLASH/Write_Protection/system_stm32f10x.c STM32F10x system source file | |
60 | |
61 @par Hardware and Software environment | |
62 | |
63 - This example runs on STM32F10x Connectivity line, High-Density, Medium-Density, | |
64 High-Density Value line, XL-Density, Medium-Density Value line, Low-Density | |
65 and Low-Density Value line Devices. | |
66 | |
67 - This example has been tested with STMicroelectronics STM32100E-EVAL (High-Density | |
68 Value line), STM32100B-EVAL (Medium-Density Value line), STM3210C-EVAL | |
69 (Connectivity line), STM3210E-EVAL (High-Density and XL-Density) and STM3210B-EVAL | |
70 (Medium-Density) evaluation boards and can be easily tailored to any other | |
71 supported device and development board. | |
72 | |
73 | |
74 @par How to use it ? | |
75 | |
76 In order to make the program work, you must do the following : | |
77 - Copy all source files from this example folder to the template folder under | |
78 Project\STM32F10x_StdPeriph_Template | |
79 - Open your preferred toolchain | |
80 - Rebuild all files and load your image into target memory | |
81 - Run the example | |
82 | |
83 @note | |
84 - Low-density Value line devices are STM32F100xx microcontrollers where the | |
85 Flash memory density ranges between 16 and 32 Kbytes. | |
86 - Low-density devices are STM32F101xx, STM32F102xx and STM32F103xx | |
87 microcontrollers where the Flash memory density ranges between 16 and 32 Kbytes. | |
88 - Medium-density Value line devices are STM32F100xx microcontrollers where | |
89 the Flash memory density ranges between 64 and 128 Kbytes. | |
90 - Medium-density devices are STM32F101xx, STM32F102xx and STM32F103xx | |
91 microcontrollers where the Flash memory density ranges between 64 and 128 Kbytes. | |
92 - High-density Value line devices are STM32F100xx microcontrollers where | |
93 the Flash memory density ranges between 256 and 512 Kbytes. | |
94 - High-density devices are STM32F101xx and STM32F103xx microcontrollers where | |
95 the Flash memory density ranges between 256 and 512 Kbytes. | |
96 - XL-density devices are STM32F101xx and STM32F103xx microcontrollers where | |
97 the Flash memory density ranges between 512 and 1024 Kbytes. | |
98 - Connectivity line devices are STM32F105xx and STM32F107xx microcontrollers. | |
99 | |
100 * <h3><center>© COPYRIGHT 2011 STMicroelectronics</center></h3> | |
101 */ |