Mercurial > ~darius > hgwebdir.cgi > stm32temp
comparison libs/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/DAC/OneChannelDMA_Escalator/main.c @ 0:c59513fd84fb
Initial commit of STM32 test code.
author | Daniel O'Connor <darius@dons.net.au> |
---|---|
date | Mon, 03 Oct 2011 21:19:15 +1030 |
parents | |
children |
comparison
equal
deleted
inserted
replaced
-1:000000000000 | 0:c59513fd84fb |
---|---|
1 /** | |
2 ****************************************************************************** | |
3 * @file DAC/OneChannelDMA_Escalator/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_OneChannelDMA_Escalator | |
30 * @{ | |
31 */ | |
32 | |
33 /* Private typedef -----------------------------------------------------------*/ | |
34 /* Private define ------------------------------------------------------------*/ | |
35 #define DAC_DHR8R1_Address 0x40007410 | |
36 | |
37 /* Init Structure definition */ | |
38 DAC_InitTypeDef DAC_InitStructure; | |
39 DMA_InitTypeDef DMA_InitStructure; | |
40 | |
41 /* Private macro -------------------------------------------------------------*/ | |
42 /* Private variables ---------------------------------------------------------*/ | |
43 const uint8_t Escalator8bit[6] = {0x0, 0x33, 0x66, 0x99, 0xCC, 0xFF}; | |
44 | |
45 /* Private function prototypes -----------------------------------------------*/ | |
46 void RCC_Configuration(void); | |
47 void GPIO_Configuration(void); | |
48 void Delay(__IO uint32_t nCount); | |
49 | |
50 /* Private functions ---------------------------------------------------------*/ | |
51 | |
52 /** | |
53 * @brief Main program. | |
54 * @param None | |
55 * @retval None | |
56 */ | |
57 int main(void) | |
58 { | |
59 /*!< At this stage the microcontroller clock setting is already configured, | |
60 this is done through SystemInit() function which is called from startup | |
61 file (startup_stm32f10x_xx.s) before to branch to application main. | |
62 To reconfigure the default setting of SystemInit() function, refer to | |
63 system_stm32f10x.c file | |
64 */ | |
65 | |
66 /* System Clocks Configuration */ | |
67 RCC_Configuration(); | |
68 | |
69 /* Once the DAC channel is enabled, the corresponding GPIO pin is automatically | |
70 connected to the DAC converter. In order to avoid parasitic consumption, | |
71 the GPIO pin should be configured in analog */ | |
72 GPIO_Configuration(); | |
73 | |
74 /* TIM6 Configuration */ | |
75 TIM_PrescalerConfig(TIM6, 0xF, TIM_PSCReloadMode_Update); | |
76 TIM_SetAutoreload(TIM6, 0xFF); | |
77 /* TIM6 TRGO selection */ | |
78 TIM_SelectOutputTrigger(TIM6, TIM_TRGOSource_Update); | |
79 | |
80 /* DAC channel1 Configuration */ | |
81 DAC_InitStructure.DAC_Trigger = DAC_Trigger_T6_TRGO; | |
82 DAC_InitStructure.DAC_WaveGeneration = DAC_WaveGeneration_None; | |
83 DAC_InitStructure.DAC_OutputBuffer = DAC_OutputBuffer_Disable; | |
84 DAC_Init(DAC_Channel_1, &DAC_InitStructure); | |
85 | |
86 #if !defined STM32F10X_LD_VL && !defined STM32F10X_MD_VL | |
87 /* DMA2 channel3 configuration */ | |
88 DMA_DeInit(DMA2_Channel3); | |
89 #else | |
90 /* DMA1 channel3 configuration */ | |
91 DMA_DeInit(DMA1_Channel3); | |
92 #endif | |
93 | |
94 DMA_InitStructure.DMA_PeripheralBaseAddr = DAC_DHR8R1_Address; | |
95 DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)&Escalator8bit; | |
96 DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralDST; | |
97 DMA_InitStructure.DMA_BufferSize = 6; | |
98 DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable; | |
99 DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable; | |
100 DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte; | |
101 DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte; | |
102 DMA_InitStructure.DMA_Mode = DMA_Mode_Circular; | |
103 DMA_InitStructure.DMA_Priority = DMA_Priority_High; | |
104 DMA_InitStructure.DMA_M2M = DMA_M2M_Disable; | |
105 | |
106 #if !defined STM32F10X_LD_VL && !defined STM32F10X_MD_VL | |
107 DMA_Init(DMA2_Channel3, &DMA_InitStructure); | |
108 /* Enable DMA2 Channel3 */ | |
109 DMA_Cmd(DMA2_Channel3, ENABLE); | |
110 #else | |
111 DMA_Init(DMA1_Channel3, &DMA_InitStructure); | |
112 /* Enable DMA1 Channel3 */ | |
113 DMA_Cmd(DMA1_Channel3, ENABLE); | |
114 #endif | |
115 | |
116 /* Enable DAC Channel1: Once the DAC channel1 is enabled, PA.04 is | |
117 automatically connected to the DAC converter. */ | |
118 DAC_Cmd(DAC_Channel_1, ENABLE); | |
119 | |
120 /* Enable DMA for DAC Channel1 */ | |
121 DAC_DMACmd(DAC_Channel_1, ENABLE); | |
122 | |
123 /* TIM6 enable counter */ | |
124 TIM_Cmd(TIM6, ENABLE); | |
125 | |
126 while (1) | |
127 { | |
128 } | |
129 } | |
130 | |
131 | |
132 /** | |
133 * @brief Configures the different system clocks. | |
134 * @param None | |
135 * @retval None | |
136 */ | |
137 void RCC_Configuration(void) | |
138 { | |
139 /* Enable peripheral clocks ------------------------------------------------*/ | |
140 #if !defined STM32F10X_LD_VL && !defined STM32F10X_MD_VL | |
141 /* DMA2 clock enable */ | |
142 RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA2, ENABLE); | |
143 #else | |
144 /* DMA1 clock enable */ | |
145 RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE); | |
146 #endif | |
147 /* GPIOA Periph clock enable */ | |
148 RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE); | |
149 /* DAC Periph clock enable */ | |
150 RCC_APB1PeriphClockCmd(RCC_APB1Periph_DAC, ENABLE); | |
151 /* TIM6 Periph clock enable */ | |
152 RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM6, ENABLE); | |
153 } | |
154 | |
155 /** | |
156 * @brief Configures the different GPIO ports. | |
157 * @param None | |
158 * @retval None | |
159 */ | |
160 void GPIO_Configuration(void) | |
161 { | |
162 GPIO_InitTypeDef GPIO_InitStructure; | |
163 | |
164 /* Once the DAC channel is enabled, the corresponding GPIO pin is automatically | |
165 connected to the DAC converter. In order to avoid parasitic consumption, | |
166 the GPIO pin should be configured in analog */ | |
167 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4; | |
168 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN; | |
169 GPIO_Init(GPIOA, &GPIO_InitStructure); | |
170 } | |
171 | |
172 /** | |
173 * @brief Inserts a delay time. | |
174 * @param nCount: specifies the delay time length. | |
175 * @retval None | |
176 */ | |
177 void Delay(__IO uint32_t nCount) | |
178 { | |
179 for(; nCount != 0; nCount--); | |
180 } | |
181 | |
182 #ifdef USE_FULL_ASSERT | |
183 | |
184 /** | |
185 * @brief Reports the name of the source file and the source line number | |
186 * where the assert_param error has occurred. | |
187 * @param file: pointer to the source file name | |
188 * @param line: assert_param error line source number | |
189 * @retval None | |
190 */ | |
191 void assert_failed(uint8_t* file, uint32_t line) | |
192 { | |
193 /* User can add his own implementation to report the file name and line number, | |
194 ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */ | |
195 | |
196 /* Infinite loop */ | |
197 while (1) | |
198 { | |
199 } | |
200 } | |
201 | |
202 #endif | |
203 | |
204 /** | |
205 * @} | |
206 */ | |
207 | |
208 /** | |
209 * @} | |
210 */ | |
211 | |
212 /******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/ |