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comparison libs/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/TIM/ExtTrigger_Synchro/main.c @ 0:c59513fd84fb

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Initial commit of STM32 test code.
author Daniel O'Connor <darius@dons.net.au>
date Mon, 03 Oct 2011 21:19:15 +1030
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1 /**
2 ******************************************************************************
3 * @file TIM/ExtTrigger_Synchro/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>&copy; 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_ExtTrigger_Synchro
30 * @{
31 */
32
33 /* Private typedef -----------------------------------------------------------*/
34 /* Private define ------------------------------------------------------------*/
35 /* Private macro -------------------------------------------------------------*/
36 /* Private variables ---------------------------------------------------------*/
37 TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
38 TIM_ICInitTypeDef TIM_ICInitStructure;
39 TIM_OCInitTypeDef TIM_OCInitStructure;
40
41 /* Private function prototypes -----------------------------------------------*/
42 void RCC_Configuration(void);
43 void GPIO_Configuration(void);
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 /* Configure the GPIO ports */
65 GPIO_Configuration();
66
67 /* Timers synchronisation in cascade mode with an external trigger -----
68 1/TIM1 is configured as Master Timer:
69 - Toggle Mode is used
70 - The TIM1 Enable event is used as Trigger Output
71
72 2/TIM1 is configured as Slave Timer for an external Trigger connected
73 to TIM1 TI2 pin (TIM1 CH2 configured as input pin):
74 - The TIM1 TI2FP2 is used as Trigger Input
75 - Rising edge is used to start and stop the TIM1: Gated Mode.
76
77 3/TIM3 is slave for TIM1 and Master for TIM4,
78 - Toggle Mode is used
79 - The ITR1(TIM1) is used as input trigger
80 - Gated mode is used, so start and stop of slave counter
81 are controlled by the Master trigger output signal(TIM1 enable event).
82 - The TIM3 enable event is used as Trigger Output.
83
84 4/TIM4 is slave for TIM3,
85 - Toggle Mode is used
86 - The ITR2(TIM3) is used as input trigger
87 - Gated mode is used, so start and stop of slave counter
88 are controlled by the Master trigger output signal(TIM3 enable event).
89
90 * For Low-density, Medium-density, High-density and Connectivity line devices:
91 The TIMxCLK is fixed to 72 MHZ, the Prescaler is equal to 2 so the TIMx clock
92 counter is equal to 24 MHz.
93 The Three Timers are running at:
94 TIMx frequency = TIMx clock counter/ 2*(TIMx_Period + 1) = 162.1 KHz.
95
96 * For Low-Density Value line and Medium-Density Value line devices:
97 The TIMxCLK is fixed to 24 MHz, the Prescaler is equal to 2 so the TIMx clock
98 counter is equal to 8 MHz.
99 TIMx frequency = TIMx clock counter/ 2*(TIMx_Period + 1) = 54 KHz.
100
101 The starts and stops of the TIM1 counters are controlled by the
102 external trigger.
103 The TIM3 starts and stops are controlled by the TIM1, and the TIM4
104 starts and stops are controlled by the TIM3.
105 -------------------------------------------------------------------- */
106
107 /* Time base configuration */
108 TIM_TimeBaseStructure.TIM_Period = 73;
109 TIM_TimeBaseStructure.TIM_Prescaler = 2;
110 TIM_TimeBaseStructure.TIM_ClockDivision = 0;
111 TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
112
113 TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure);
114
115 TIM_TimeBaseStructure.TIM_Period = 73;
116 TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure);
117
118 TIM_TimeBaseStructure.TIM_Period = 73;
119 TIM_TimeBaseInit(TIM4, &TIM_TimeBaseStructure);
120
121 /* Master Configuration in Toggle Mode */
122 TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_Toggle;
123 TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
124 TIM_OCInitStructure.TIM_Pulse = 64;
125 TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
126
127 TIM_OC1Init(TIM1, &TIM_OCInitStructure);
128
129 /* TIM1 Input Capture Configuration */
130 TIM_ICInitStructure.TIM_Channel = TIM_Channel_2;
131 TIM_ICInitStructure.TIM_ICPolarity = TIM_ICPolarity_Rising;
132 TIM_ICInitStructure.TIM_ICSelection = TIM_ICSelection_DirectTI;
133 TIM_ICInitStructure.TIM_ICPrescaler = TIM_ICPSC_DIV1;
134 TIM_ICInitStructure.TIM_ICFilter = 0;
135
136 TIM_ICInit(TIM1, &TIM_ICInitStructure);
137
138 /* TIM1 Input trigger configuration: External Trigger connected to TI2 */
139 TIM_SelectInputTrigger(TIM1, TIM_TS_TI2FP2);
140 TIM_SelectSlaveMode(TIM1, TIM_SlaveMode_Gated);
141
142 /* Select the Master Slave Mode */
143 TIM_SelectMasterSlaveMode(TIM1, TIM_MasterSlaveMode_Enable);
144
145 /* Master Mode selection: TIM1 */
146 TIM_SelectOutputTrigger(TIM1, TIM_TRGOSource_Enable);
147
148 /* Slaves Configuration: Toggle Mode */
149 TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_Toggle;
150 TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
151
152 TIM_OC1Init(TIM3, &TIM_OCInitStructure);
153
154 TIM_OC1Init(TIM4, &TIM_OCInitStructure);
155
156 /* Slave Mode selection: TIM3 */
157 TIM_SelectInputTrigger(TIM3, TIM_TS_ITR0);
158 TIM_SelectSlaveMode(TIM3, TIM_SlaveMode_Gated);
159
160 /* Select the Master Slave Mode */
161 TIM_SelectMasterSlaveMode(TIM3, TIM_MasterSlaveMode_Enable);
162
163 /* Master Mode selection: TIM3 */
164 TIM_SelectOutputTrigger(TIM3, TIM_TRGOSource_Enable);
165
166 /* Slave Mode selection: TIM4 */
167 TIM_SelectInputTrigger(TIM4, TIM_TS_ITR2);
168 TIM_SelectSlaveMode(TIM4, TIM_SlaveMode_Gated);
169
170 /* TIM1 Main Output Enable */
171 TIM_CtrlPWMOutputs(TIM1, ENABLE);
172
173 /* TIM enable counter */
174 TIM_Cmd(TIM1, ENABLE);
175 TIM_Cmd(TIM3, ENABLE);
176 TIM_Cmd(TIM4, ENABLE);
177
178 while (1)
179 {}
180 }
181
182 /**
183 * @brief Configures the different system clocks.
184 * @param None
185 * @retval None
186 */
187 void RCC_Configuration(void)
188 {
189 /* TIM1, TIM3 and TIM4 clock enable */
190 RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3 |
191 RCC_APB1Periph_TIM4, ENABLE);
192
193 /* TIM1, GPIOA, GPIOE, GPIOC and GPIOB clocks enable */
194 RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1 | RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB |
195 RCC_APB2Periph_GPIOE | RCC_APB2Periph_GPIOC | RCC_APB2Periph_AFIO, ENABLE);
196 }
197
198 /**
199 * @brief Configure the GPIO Pins.
200 * @param None
201 * @retval None
202 */
203 void GPIO_Configuration(void)
204 {
205 GPIO_InitTypeDef GPIO_InitStructure;
206 #ifdef STM32F10X_CL
207 /* GPIOE Configuration: Channel 1 as alternate function push-pull */
208 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
209 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
210 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
211
212 GPIO_Init(GPIOE, &GPIO_InitStructure);
213
214 /* GPIOE Configuration: Channel 2 as Input floating */
215 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11;
216 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
217
218 GPIO_Init(GPIOE, &GPIO_InitStructure);
219
220 /* TIM1 Full remapping pins */
221 GPIO_PinRemapConfig(GPIO_FullRemap_TIM1, ENABLE);
222
223 /*GPIOB Configuration: TIM3 channel1, 2, 3 and 4 */
224 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;
225 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
226 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
227
228 GPIO_Init(GPIOC, &GPIO_InitStructure);
229
230 GPIO_PinRemapConfig(GPIO_FullRemap_TIM3, ENABLE);
231
232 /* GPIOB Configuration: PB.06(TIM4 CH1) as alternate function push-pull */
233 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;
234
235 GPIO_Init(GPIOB, &GPIO_InitStructure);
236
237 #else
238 /* GPIOA Configuration: PA.08(TIM1 CH1) and PA.06(TIM3 CH1) as alternate function push-pull */
239 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8 | GPIO_Pin_6;
240 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
241 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
242
243 GPIO_Init(GPIOA, &GPIO_InitStructure);
244
245 /* GPIOB Configuration: PB.06(TIM4 CH1) as alternate function push-pull */
246 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;
247
248 GPIO_Init(GPIOB, &GPIO_InitStructure);
249
250 /* GPIOA Configuration: PA.09(TIM1 CH2) */
251 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
252 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
253
254 GPIO_Init(GPIOA, &GPIO_InitStructure);
255
256 #endif
257
258 }
259
260 #ifdef USE_FULL_ASSERT
261
262 /**
263 * @brief Reports the name of the source file and the source line number
264 * where the assert_param error has occurred.
265 * @param file: pointer to the source file name
266 * @param line: assert_param error line source number
267 * @retval None
268 */
269 void assert_failed(uint8_t* file, uint32_t line)
270 {
271 /* User can add his own implementation to report the file name and line number,
272 ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
273
274 while (1)
275 {}
276 }
277
278 #endif
279
280 /**
281 * @}
282 */
283
284 /**
285 * @}
286 */
287
288 /******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/