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comparison libs/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/DAC/DualModeDMA_SineWave/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 DAC_DualModeDMA_SineWave DAC dual mode sine wave example | |
3 | |
4 @verbatim | |
5 ******************** (C) COPYRIGHT 2011 STMicroelectronics ******************* | |
6 * @file DAC/DualModeDMA_SineWave/readme.txt | |
7 * @author MCD Application Team | |
8 * @version V3.5.0 | |
9 * @date 08-April-2011 | |
10 * @brief Description of the DAC dual mode sine wave 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 describes how to use DAC dual channel mode with DMA to generate sine | |
24 waves on both DAC channels outputs. | |
25 | |
26 Both DAC channels conversions are configured to be triggered by TIM2 TRGO triggers | |
27 and without noise/triangle wave generation. 12bit right data alignment is selected | |
28 since we choose to access DAC_DHR12RD register. DMA2 channel4 is configured to | |
29 transfer continuously, word by word, a 32-word buffer to the dual DAC register | |
30 DAC_DHR12RD. | |
31 | |
32 The transferred 32buffer is made to have a sine wave generation on each DAC channel | |
33 output. Both DAC channels are then enabled. Only DAC channel2 DMA capability is enabled. | |
34 | |
35 Once TIM2 is enabled, each TIM2 TRGO update event generate a DMA request which | |
36 transfer data to the dual DAC register and DAC conversion is started. The sine | |
37 waves can be visualized by connecting both PA.04 and PA.05 pins to an oscilloscope. | |
38 | |
39 | |
40 @par Directory contents | |
41 | |
42 - DAC/DualModeDMA_SineWave/stm32f10x_conf.h Library Configuration file | |
43 - DAC/DualModeDMA_SineWave/stm32f10x_it.c Interrupt handlers | |
44 - DAC/DualModeDMA_SineWave/stm32f10x_it.h Header for stm32f10x_it.c | |
45 - DAC/DualModeDMA_SineWave/main.c Main program | |
46 - DAC/DualModeDMA_SineWave/system_stm32f10x.c STM32F10x system source file | |
47 | |
48 @par Hardware and Software environment | |
49 | |
50 - This example runs on STM32F10x Connectivity line, High-Density, High-Density | |
51 Value line, XL-Density, Medium-Density Value line and Low-Density Value line | |
52 Devices. | |
53 | |
54 - This example has been tested with STMicroelectronics STM32100E-EVAL | |
55 (High-Density Value line), STM32100B-EVAL (Medium-Density Value line), | |
56 STM3210C-EVAL (Connectivity line) and STM3210E-EVAL (High-Density and XL-Density) | |
57 evaluation boards and can be easily tailored to any other supported device | |
58 and development board. | |
59 | |
60 - STM32100E-EVAL Set-up | |
61 - Connect PA.04 and PA.05 pins to an oscilloscope | |
62 | |
63 - STM32100B-EVAL Set-up | |
64 - Connect PA.04 and PA.05 pins to an oscilloscope | |
65 | |
66 - STM3210C-EVAL Set-up | |
67 - Only PA.04 can be monitored on an oscilloscope, PA.05 is used by other | |
68 module (Motor control connector) that prevents to have DAC channel output | |
69 on it. However, if you don't use Motor control connector, you can remove | |
70 the 0ohm resistor R84 and thus PA.05 can be used for DAC output. | |
71 @note Make shure that jumper JP15 is open. | |
72 | |
73 - STM3210E-EVAL Set-up | |
74 - Connect PA.04 and PA.05 pins to an oscilloscope | |
75 | |
76 | |
77 @par How to use it ? | |
78 | |
79 In order to make the program work, you must do the following : | |
80 - Copy all source files from this example folder to the template folder under | |
81 Project\STM32F10x_StdPeriph_Template | |
82 - Open your preferred toolchain | |
83 - Rebuild all files and load your image into target memory | |
84 - Run the example | |
85 | |
86 @note | |
87 - Low-density Value line devices are STM32F100xx microcontrollers where the | |
88 Flash memory density ranges between 16 and 32 Kbytes. | |
89 - Low-density devices are STM32F101xx, STM32F102xx and STM32F103xx | |
90 microcontrollers where the Flash memory density ranges between 16 and 32 Kbytes. | |
91 - Medium-density Value line devices are STM32F100xx microcontrollers where | |
92 the Flash memory density ranges between 64 and 128 Kbytes. | |
93 - Medium-density devices are STM32F101xx, STM32F102xx and STM32F103xx | |
94 microcontrollers where the Flash memory density ranges between 64 and 128 Kbytes. | |
95 - High-density devices are STM32F101xx and STM32F103xx microcontrollers where | |
96 the Flash memory density ranges between 256 and 512 Kbytes. | |
97 - High-density Value line devices are STM32F100xx microcontrollers where | |
98 the Flash memory density ranges between 256 and 512 Kbytes. | |
99 - XL-density devices are STM32F101xx and STM32F103xx microcontrollers where | |
100 the Flash memory density ranges between 512 and 1024 Kbytes. | |
101 - Connectivity line devices are STM32F105xx and STM32F107xx microcontrollers. | |
102 | |
103 * <h3><center>© COPYRIGHT 2011 STMicroelectronics</center></h3> | |
104 */ |