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comparison libs/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/TIM/OCActive/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 /** | |
2 ****************************************************************************** | |
3 * @file TIM/OCActive/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 TIM_OCActive | |
30 * @{ | |
31 */ | |
32 | |
33 /* Private typedef -----------------------------------------------------------*/ | |
34 /* Private define ------------------------------------------------------------*/ | |
35 /* Private macro -------------------------------------------------------------*/ | |
36 /* Private variables ---------------------------------------------------------*/ | |
37 TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure; | |
38 TIM_OCInitTypeDef TIM_OCInitStructure; | |
39 uint16_t CCR1_Val = 1000; | |
40 uint16_t CCR2_Val = 500; | |
41 uint16_t CCR3_Val = 250; | |
42 uint16_t CCR4_Val = 125; | |
43 uint16_t PrescalerValue = 0; | |
44 | |
45 /* Private function prototypes -----------------------------------------------*/ | |
46 void RCC_Configuration(void); | |
47 void GPIO_Configuration(void); | |
48 | |
49 /* Private functions ---------------------------------------------------------*/ | |
50 | |
51 /** | |
52 * @brief Main program | |
53 * @param None | |
54 * @retval None | |
55 */ | |
56 int main(void) | |
57 { | |
58 /*!< At this stage the microcontroller clock setting is already configured, | |
59 this is done through SystemInit() function which is called from startup | |
60 file (startup_stm32f10x_xx.s) before to branch to application main. | |
61 To reconfigure the default setting of SystemInit() function, refer to | |
62 system_stm32f10x.c file | |
63 */ | |
64 | |
65 /* System Clocks Configuration */ | |
66 RCC_Configuration(); | |
67 | |
68 /* Configure the GPIO ports */ | |
69 GPIO_Configuration(); | |
70 | |
71 /* --------------------------------------------------------------- | |
72 TIM3 Configuration: | |
73 TIM3CLK = SystemCoreClock / 2, | |
74 The objective is to get TIM3 counter clock at 1 KHz: | |
75 - Prescaler = (TIM3CLK / TIM3 counter clock) - 1 | |
76 And generate 4 signals with 4 different delays: | |
77 TIM3_CH1 delay = CCR1_Val/TIM3 counter clock = 1000 ms | |
78 TIM3_CH2 delay = CCR2_Val/TIM3 counter clock = 500 ms | |
79 TIM3_CH3 delay = CCR3_Val/TIM3 counter clock = 250 ms | |
80 TIM3_CH4 delay = CCR4_Val/TIM3 counter clock = 125 ms | |
81 | |
82 * SystemCoreClock is set to 72 MHz for Low-density, Medium-density, High-density | |
83 and Connectivity line devices and to 24 MHz for Low-Density Value line and | |
84 Medium-Density Value line devices | |
85 --------------------------------------------------------------- */ | |
86 /*Compute the prescaler value */ | |
87 PrescalerValue = (uint16_t) (SystemCoreClock / 2000) - 1; | |
88 /* Time base configuration */ | |
89 TIM_TimeBaseStructure.TIM_Period = 65535; | |
90 TIM_TimeBaseStructure.TIM_Prescaler = PrescalerValue; | |
91 TIM_TimeBaseStructure.TIM_ClockDivision = 0; | |
92 TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; | |
93 | |
94 TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure); | |
95 | |
96 /* Output Compare Active Mode configuration: Channel1 */ | |
97 TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_Active; | |
98 TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; | |
99 TIM_OCInitStructure.TIM_Pulse = CCR1_Val; | |
100 TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; | |
101 TIM_OC1Init(TIM3, &TIM_OCInitStructure); | |
102 | |
103 TIM_OC1PreloadConfig(TIM3, TIM_OCPreload_Disable); | |
104 | |
105 /* Output Compare Active Mode configuration: Channel2 */ | |
106 TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; | |
107 TIM_OCInitStructure.TIM_Pulse = CCR2_Val; | |
108 | |
109 TIM_OC2Init(TIM3, &TIM_OCInitStructure); | |
110 | |
111 TIM_OC2PreloadConfig(TIM3, TIM_OCPreload_Disable); | |
112 | |
113 /* Output Compare Active Mode configuration: Channel3 */ | |
114 TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; | |
115 TIM_OCInitStructure.TIM_Pulse = CCR3_Val; | |
116 | |
117 TIM_OC3Init(TIM3, &TIM_OCInitStructure); | |
118 | |
119 TIM_OC3PreloadConfig(TIM3, TIM_OCPreload_Disable); | |
120 | |
121 /* Output Compare Active Mode configuration: Channel4 */ | |
122 TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; | |
123 TIM_OCInitStructure.TIM_Pulse = CCR4_Val; | |
124 | |
125 TIM_OC4Init(TIM3, &TIM_OCInitStructure); | |
126 | |
127 TIM_OC4PreloadConfig(TIM3, TIM_OCPreload_Disable); | |
128 | |
129 TIM_ARRPreloadConfig(TIM3, ENABLE); | |
130 | |
131 #ifdef STM32F10X_CL | |
132 /* Set PD.07 pin */ | |
133 GPIO_SetBits(GPIOD, GPIO_Pin_7); | |
134 #else | |
135 /* Set PC.06 pin */ | |
136 GPIO_SetBits(GPIOC, GPIO_Pin_6); | |
137 #endif | |
138 | |
139 /* TIM3 enable counter */ | |
140 TIM_Cmd(TIM3, ENABLE); | |
141 | |
142 while (1) | |
143 {} | |
144 } | |
145 | |
146 /** | |
147 * @brief Configures the different system clocks. | |
148 * @param None | |
149 * @retval None | |
150 */ | |
151 void RCC_Configuration(void) | |
152 { | |
153 /* PCLK1 = HCLK/4 */ | |
154 RCC_PCLK1Config(RCC_HCLK_Div4); | |
155 | |
156 /* TIM3 clock enable */ | |
157 RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE); | |
158 | |
159 /* GPIOA and GPIOC clock enable */ | |
160 RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOD | RCC_APB2Periph_GPIOB | | |
161 RCC_APB2Periph_GPIOC | RCC_APB2Periph_AFIO, ENABLE); | |
162 } | |
163 | |
164 /** | |
165 * @brief Configure the TIM3 and the GPIOE Pins. | |
166 * @param None | |
167 * @retval None | |
168 */ | |
169 void GPIO_Configuration(void) | |
170 { | |
171 GPIO_InitTypeDef GPIO_InitStructure; | |
172 | |
173 #ifdef STM32F10X_CL | |
174 /*GPIOB Configuration: TIM3 channel1, 2, 3 and 4 */ | |
175 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7 | GPIO_Pin_8 | GPIO_Pin_9; | |
176 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; | |
177 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; | |
178 | |
179 GPIO_Init(GPIOC, &GPIO_InitStructure); | |
180 | |
181 GPIO_PinRemapConfig(GPIO_FullRemap_TIM3, ENABLE); | |
182 | |
183 /* GPIOD Configuration: Pin7 an Output push-pull */ | |
184 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7; | |
185 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; | |
186 | |
187 GPIO_Init(GPIOD, &GPIO_InitStructure); | |
188 #else | |
189 /* GPIOA Configuration:TIM3 Channel1, 2, 3 and 4 as alternate function push-pull */ | |
190 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7; | |
191 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; | |
192 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; | |
193 | |
194 GPIO_Init(GPIOA, &GPIO_InitStructure); | |
195 | |
196 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1; | |
197 GPIO_Init(GPIOB, &GPIO_InitStructure); | |
198 | |
199 /* GPIOC Configuration: Pin6 an Output push-pull */ | |
200 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6; | |
201 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; | |
202 | |
203 GPIO_Init(GPIOC, &GPIO_InitStructure); | |
204 #endif | |
205 } | |
206 | |
207 #ifdef USE_FULL_ASSERT | |
208 | |
209 /** | |
210 * @brief Reports the name of the source file and the source line number | |
211 * where the assert_param error has occurred. | |
212 * @param file: pointer to the source file name | |
213 * @param line: assert_param error line source number | |
214 * @retval None | |
215 */ | |
216 void assert_failed(uint8_t* file, uint32_t line) | |
217 { | |
218 /* User can add his own implementation to report the file name and line number, | |
219 ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */ | |
220 | |
221 while (1) | |
222 {} | |
223 } | |
224 | |
225 #endif | |
226 | |
227 /** | |
228 * @} | |
229 */ | |
230 | |
231 /** | |
232 * @} | |
233 */ | |
234 | |
235 /******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/ |