Outline ![]()
Files ![]()
loading...
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
/**
******************************************************************************
* @file TIM/TIM_OCInactive/Src/main.c
* @author MCD Application Team
* @brief This example shows how to configure the Timer to generate four
* delayed signals.
******************************************************************************
* @attention
*
* Copyright (c) 2017 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "main.h"
/** @addtogroup STM32F4xx_HAL_Examples
* @{
*/
/** @addtogroup TIM_OCInactive
* @{
*/
/* Private typedef -----------------------------------------------------------*/
#define PULSE1_VALUE 10000 /* Capture Compare 1 Value */
#define PULSE2_VALUE 5000 /* Capture Compare 2 Value */
#define PULSE3_VALUE 2500 /* Capture Compare 3 Value */
#define PULSE4_VALUE 1250 /* Capture Compare 4 Value */
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Timer handler declaration */
TIM_HandleTypeDef TimHandle;
/* Timer Output Compare Configuration Structure declaration */
TIM_OC_InitTypeDef sConfig;
/* Counter Prescaler value */
uint32_t uwPrescalerValue = 0;
/* Private function prototypes -----------------------------------------------*/
static void SystemClock_Config(void);
static void Error_Handler(void);
/* Private functions ---------------------------------------------------------*/
/**
* @brief Main program.
* @param None
* @retval None
*/
int main(void)
{
GPIO_InitTypeDef GPIO_InitStruct;
/* STM32F4xx HAL library initialization:
- Configure the Flash prefetch
- Systick timer is configured by default as source of time base, but user
can eventually implement his proper time base source (a general purpose
timer for example or other time source), keeping in mind that Time base
duration should be kept 1ms since PPP_TIMEOUT_VALUEs are defined and
handled in milliseconds basis.
- Set NVIC Group Priority to 4
- Low Level Initialization
*/
HAL_Init();
/* Configure the system clock to 180 MHz */
SystemClock_Config();
/* Enable GPIO Clock */
__HAL_RCC_GPIOB_CLK_ENABLE();
/* Configure the GPIO pins: used to display the 4 wave forms */
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_PULLUP;
GPIO_InitStruct.Speed = GPIO_SPEED_FAST;
/* Configure PB.00 to display wave form of channel1 */
GPIO_InitStruct.Pin = GPIO_PIN_0;
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
/* Configure PB.01 to display wave form of channel2 */
GPIO_InitStruct.Pin = GPIO_PIN_1;
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
/* Configure PB.03 to display wave form of channel3 */
GPIO_InitStruct.Pin = GPIO_PIN_3;
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
/* Configure PB.05 to display wave form of channel4 */
GPIO_InitStruct.Pin = GPIO_PIN_5;
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
/* Compute the prescaler value to have TIMx counter clock equal to 10 kHz */
uwPrescalerValue = ((SystemCoreClock) / 10000) - 1;
/*##-1- Configure the TIM peripheral #######################################*/
/* Initialize TIMx peripheral as follow:
+ Prescaler = (SystemCoreClock)/10000 - 1;
+ Period = 65535
+ ClockDivision = 0
+ Counter direction = Up
*/
TimHandle.Instance = TIM1;
TimHandle.Init.Period = 65535;
TimHandle.Init.Prescaler = uwPrescalerValue;
TimHandle.Init.ClockDivision = 0;
TimHandle.Init.CounterMode = TIM_COUNTERMODE_UP;
TimHandle.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
if(HAL_TIM_OC_Init(&TimHandle) != HAL_OK)
{
/* Initialization Error */
Error_Handler();
}
/*##-2- Configure the Output Compare channels #########################################*/
/* Common configuration for all channels */
sConfig.OCMode = TIM_OCMODE_INACTIVE;
sConfig.OCPolarity = TIM_OCPOLARITY_HIGH;
/* Set the pulse (delay1) value for channel 1 */
sConfig.Pulse = PULSE1_VALUE;
if(HAL_TIM_OC_ConfigChannel(&TimHandle, &sConfig, TIM_CHANNEL_1) != HAL_OK)
{
/* Configuration Error */
Error_Handler();
}
/* Set the pulse (delay2) value for channel 2 */
sConfig.Pulse = PULSE2_VALUE;
if(HAL_TIM_OC_ConfigChannel(&TimHandle, &sConfig, TIM_CHANNEL_2) != HAL_OK)
{
/* Configuration Error */
Error_Handler();
}
/* Set the pulse (delay3) value for channel 3 */
sConfig.Pulse = PULSE3_VALUE;
if(HAL_TIM_OC_ConfigChannel(&TimHandle, &sConfig, TIM_CHANNEL_3) != HAL_OK)
{
/* Configuration Error */
Error_Handler();
}
/* Set the pulse (delay4) value for channel 4 */
sConfig.Pulse = PULSE4_VALUE;
if(HAL_TIM_OC_ConfigChannel(&TimHandle, &sConfig, TIM_CHANNEL_4) != HAL_OK)
{
/* Configuration Error */
Error_Handler();
}
/*##-3- Set GPIO Pins PB.00, PB.01, PB.03 and PB.05 as reference ###################*/
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_0, GPIO_PIN_SET);
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_1, GPIO_PIN_SET);
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_3, GPIO_PIN_SET);
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_5, GPIO_PIN_SET);
/*##-4- Start signals generation #######################################*/
/* Start channel 1 in Output compare mode */
if(HAL_TIM_OC_Start_IT(&TimHandle, TIM_CHANNEL_1) != HAL_OK)
{
/* Starting Error */
Error_Handler();
}
/* Start channel 2 in Output compare mode */
if(HAL_TIM_OC_Start_IT(&TimHandle, TIM_CHANNEL_2) != HAL_OK)
{
/* Starting Error */
Error_Handler();
}
/* Start channel 3 in Output compare mode */
if(HAL_TIM_OC_Start_IT(&TimHandle, TIM_CHANNEL_3) != HAL_OK)
{
/* Starting Error */
Error_Handler();
}
/* Start channel 4 in Output compare mode */
if(HAL_TIM_OC_Start_IT(&TimHandle, TIM_CHANNEL_4) != HAL_OK)
{
/* Starting Error */
Error_Handler();
}
while (1)
{
}
}
/**
* @brief Output Compare callback in non blocking mode
* @param htim : TIM OC handle
* @retval None
*/
void HAL_TIM_OC_DelayElapsedCallback(TIM_HandleTypeDef *htim)
{
if(htim->Channel == HAL_TIM_ACTIVE_CHANNEL_1)
{
/* Reset GPIO Pin PB.00 after 1s */
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_0, GPIO_PIN_RESET);
}
else if(htim->Channel == HAL_TIM_ACTIVE_CHANNEL_2)
{
/* Reset GPIO Pin PB.01 after 500ms */
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_1, GPIO_PIN_RESET);
}
else if(htim->Channel == HAL_TIM_ACTIVE_CHANNEL_3)
{
/* Reset GPIO Pin PB.03 after 250ms */
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_3, GPIO_PIN_RESET);
}
else
{
/* Reset GPIO Pin PB.05 after 125ms */
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_5, GPIO_PIN_RESET);
}
}
/**
* @brief This function is executed in case of error occurrence.
* @param None
* @retval None
*/
static void Error_Handler(void)
{
while (1)
{
}
}
/**
* @brief System Clock Configuration
* The system Clock is configured as follow :
* System Clock source = PLL (HSE)
* SYSCLK(Hz) = 180000000
* HCLK(Hz) = 180000000
* AHB Prescaler = 1
* APB1 Prescaler = 4
* APB2 Prescaler = 2
* HSE Frequency(Hz) = 8000000
* PLL_M = 8
* PLL_N = 360
* PLL_P = 2
* PLL_Q = 7
* VDD(V) = 3.3
* Main regulator output voltage = Scale1 mode
* Flash Latency(WS) = 5
* @param None
* @retval None
*/
static void SystemClock_Config(void)
{
RCC_ClkInitTypeDef RCC_ClkInitStruct;
RCC_OscInitTypeDef RCC_OscInitStruct;
HAL_StatusTypeDef ret = HAL_OK;
/* Enable Power Control clock */
__HAL_RCC_PWR_CLK_ENABLE();
/* The voltage scaling allows optimizing the power consumption when the device is
clocked below the maximum system frequency, to update the voltage scaling value
regarding system frequency refer to product datasheet. */
__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
/* Enable HSE Oscillator and activate PLL with HSE as source */
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
RCC_OscInitStruct.HSEState = RCC_HSE_ON;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
RCC_OscInitStruct.PLL.PLLM = 8;
RCC_OscInitStruct.PLL.PLLN = 360;
RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
RCC_OscInitStruct.PLL.PLLQ = 7;
RCC_OscInitStruct.PLL.PLLR = 2;
ret = HAL_RCC_OscConfig(&RCC_OscInitStruct);
if(ret != HAL_OK)
{
while(1) { ; }
}
/* Activate the OverDrive to reach the 180 MHz Frequency */
ret = HAL_PWREx_EnableOverDrive();
if(ret != HAL_OK)
{
while(1) { ; }
}
/* Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2 clocks dividers */
RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2);
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;
ret = HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5);
if(ret != HAL_OK)
{
while(1) { ; }
}
}
#ifdef USE_FULL_ASSERT
/**
* @brief Reports the name of the source file and the source line number
* where the assert_param error has occurred.
* @param file: pointer to the source file name
* @param line: assert_param error line source number
* @retval None
*/
void assert_failed(uint8_t *file, uint32_t line)
{
/* User can add his own implementation to report the file name and line number,
ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
/* Infinite loop */
while (1)
{
}
}
#endif
/**
* @}
*/
/**
* @}
*/