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comparison libs/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/DAC/OneChannel_NoiseWave/main.c @ 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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-1:000000000000 | 0:c59513fd84fb |
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1 /** | |
2 ****************************************************************************** | |
3 * @file DAC/OneChannel_NoiseWave/main.c | |
4 * @author MCD Application Team | |
5 * @version V3.5.0 | |
6 * @date 08-April-2011 | |
7 * @brief Main program body. | |
8 ****************************************************************************** | |
9 * @attention | |
10 * | |
11 * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS | |
12 * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE | |
13 * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY | |
14 * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING | |
15 * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE | |
16 * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS. | |
17 * | |
18 * <h2><center>© COPYRIGHT 2011 STMicroelectronics</center></h2> | |
19 ****************************************************************************** | |
20 */ | |
21 | |
22 /* Includes ------------------------------------------------------------------*/ | |
23 #include "stm32f10x.h" | |
24 | |
25 /** @addtogroup STM32F10x_StdPeriph_Examples | |
26 * @{ | |
27 */ | |
28 | |
29 /** @addtogroup DAC_OneChannel_NoiseWave | |
30 * @{ | |
31 */ | |
32 | |
33 /* Private typedef -----------------------------------------------------------*/ | |
34 /* Private define ------------------------------------------------------------*/ | |
35 /* Init Structure definition */ | |
36 DAC_InitTypeDef DAC_InitStructure; | |
37 | |
38 /* Private macro -------------------------------------------------------------*/ | |
39 /* Private variables ---------------------------------------------------------*/ | |
40 /* Private function prototypes -----------------------------------------------*/ | |
41 void RCC_Configuration(void); | |
42 void GPIO_Configuration(void); | |
43 void Delay(__IO uint32_t nCount); | |
44 | |
45 /* Private functions ---------------------------------------------------------*/ | |
46 | |
47 /** | |
48 * @brief Main program. | |
49 * @param None | |
50 * @retval None | |
51 */ | |
52 int main(void) | |
53 { | |
54 /*!< At this stage the microcontroller clock setting is already configured, | |
55 this is done through SystemInit() function which is called from startup | |
56 file (startup_stm32f10x_xx.s) before to branch to application main. | |
57 To reconfigure the default setting of SystemInit() function, refer to | |
58 system_stm32f10x.c file | |
59 */ | |
60 | |
61 /* System Clocks Configuration */ | |
62 RCC_Configuration(); | |
63 | |
64 /* Once the DAC channel is enabled, the corresponding GPIO pin is automatically | |
65 connected to the DAC converter. In order to avoid parasitic consumption, | |
66 the GPIO pin should be configured in analog */ | |
67 GPIO_Configuration(); | |
68 | |
69 /* DAC channel1 Configuration */ | |
70 DAC_InitStructure.DAC_Trigger = DAC_Trigger_Software; | |
71 DAC_InitStructure.DAC_WaveGeneration = DAC_WaveGeneration_Noise; | |
72 DAC_InitStructure.DAC_LFSRUnmask_TriangleAmplitude = DAC_LFSRUnmask_Bits8_0; | |
73 DAC_InitStructure.DAC_OutputBuffer = DAC_OutputBuffer_Enable; | |
74 DAC_Init(DAC_Channel_1, &DAC_InitStructure); | |
75 | |
76 /* Enable DAC Channel1: Once the DAC channel1 is enabled, PA.04 is | |
77 automatically connected to the DAC converter. */ | |
78 DAC_Cmd(DAC_Channel_1, ENABLE); | |
79 | |
80 /* Set DAC Channel1 DHR12L register */ | |
81 DAC_SetChannel1Data(DAC_Align_12b_L, 0x7FF0); | |
82 | |
83 while (1) | |
84 { | |
85 /* Start DAC Channel1 conversion by software */ | |
86 DAC_SoftwareTriggerCmd(DAC_Channel_1, ENABLE); | |
87 } | |
88 } | |
89 | |
90 /** | |
91 * @brief Configures the different system clocks. | |
92 * @param None | |
93 * @retval None | |
94 */ | |
95 void RCC_Configuration(void) | |
96 { | |
97 /* Enable peripheral clocks ------------------------------------------------*/ | |
98 /* GPIOA Periph clock enable */ | |
99 RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE); | |
100 /* DAC Periph clock enable */ | |
101 RCC_APB1PeriphClockCmd(RCC_APB1Periph_DAC, ENABLE); | |
102 } | |
103 | |
104 /** | |
105 * @brief Configures the different GPIO ports. | |
106 * @param None | |
107 * @retval None | |
108 */ | |
109 void GPIO_Configuration(void) | |
110 { | |
111 GPIO_InitTypeDef GPIO_InitStructure; | |
112 | |
113 /* Once the DAC channel is enabled, the corresponding GPIO pin is automatically | |
114 connected to the DAC converter. In order to avoid parasitic consumption, | |
115 the GPIO pin should be configured in analog */ | |
116 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4; | |
117 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN; | |
118 GPIO_Init(GPIOA, &GPIO_InitStructure); | |
119 } | |
120 | |
121 /** | |
122 * @brief Inserts a delay time. | |
123 * @param nCount: specifies the delay time length. | |
124 * @retval None | |
125 */ | |
126 void Delay(__IO uint32_t nCount) | |
127 { | |
128 for(; nCount != 0; nCount--); | |
129 } | |
130 | |
131 #ifdef USE_FULL_ASSERT | |
132 | |
133 /** | |
134 * @brief Reports the name of the source file and the source line number | |
135 * where the assert_param error has occurred. | |
136 * @param file: pointer to the source file name | |
137 * @param line: assert_param error line source number | |
138 * @retval None | |
139 */ | |
140 void assert_failed(uint8_t* file, uint32_t line) | |
141 { | |
142 /* User can add his own implementation to report the file name and line number, | |
143 ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */ | |
144 | |
145 /* Infinite loop */ | |
146 while (1) | |
147 { | |
148 } | |
149 } | |
150 | |
151 #endif | |
152 | |
153 /** | |
154 * @} | |
155 */ | |
156 | |
157 /** | |
158 * @} | |
159 */ | |
160 | |
161 /******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/ |