ON Semiconductor / mbed-os

5.2.1 - Updated I2C files

Dependents:   mbed-TFT-example-NCS36510 mbed-Accelerometer-example-NCS36510 mbed-Accelerometer-example-NCS36510

targets/TARGET_STM/TARGET_STM32F2/pwmout_api.c@0:098463de4c5d, 2017-01-25 (annotated)

Committer:
group-onsemi
Date:
Wed Jan 25 20:34:15 2017 +0000
Revision:
0:098463de4c5d
Initial commit

Who changed what in which revision?

UserRevisionLine numberNew contents of line
group-onsemi 0:098463de4c5d 1 /* mbed Microcontroller Library
group-onsemi 0:098463de4c5d 2 *******************************************************************************
group-onsemi 0:098463de4c5d 3 * Copyright (c) 2016, STMicroelectronics
group-onsemi 0:098463de4c5d 4 * All rights reserved.
group-onsemi 0:098463de4c5d 5 *
group-onsemi 0:098463de4c5d 6 * Redistribution and use in source and binary forms, with or without
group-onsemi 0:098463de4c5d 7 * modification, are permitted provided that the following conditions are met:
group-onsemi 0:098463de4c5d 8 *
group-onsemi 0:098463de4c5d 9 * 1. Redistributions of source code must retain the above copyright notice,
group-onsemi 0:098463de4c5d 10 * this list of conditions and the following disclaimer.
group-onsemi 0:098463de4c5d 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
group-onsemi 0:098463de4c5d 12 * this list of conditions and the following disclaimer in the documentation
group-onsemi 0:098463de4c5d 13 * and/or other materials provided with the distribution.
group-onsemi 0:098463de4c5d 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
group-onsemi 0:098463de4c5d 15 * may be used to endorse or promote products derived from this software
group-onsemi 0:098463de4c5d 16 * without specific prior written permission.
group-onsemi 0:098463de4c5d 17 *
group-onsemi 0:098463de4c5d 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
group-onsemi 0:098463de4c5d 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
group-onsemi 0:098463de4c5d 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
group-onsemi 0:098463de4c5d 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
group-onsemi 0:098463de4c5d 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
group-onsemi 0:098463de4c5d 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
group-onsemi 0:098463de4c5d 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
group-onsemi 0:098463de4c5d 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
group-onsemi 0:098463de4c5d 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
group-onsemi 0:098463de4c5d 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
group-onsemi 0:098463de4c5d 28 *******************************************************************************
group-onsemi 0:098463de4c5d 29 */
group-onsemi 0:098463de4c5d 30 #include "pwmout_api.h"
group-onsemi 0:098463de4c5d 31
group-onsemi 0:098463de4c5d 32 #if DEVICE_PWMOUT
group-onsemi 0:098463de4c5d 33
group-onsemi 0:098463de4c5d 34 #include "cmsis.h"
group-onsemi 0:098463de4c5d 35 #include "pinmap.h"
group-onsemi 0:098463de4c5d 36 #include "mbed_error.h"
group-onsemi 0:098463de4c5d 37 #include "PeripheralPins.h"
group-onsemi 0:098463de4c5d 38
group-onsemi 0:098463de4c5d 39 static TIM_HandleTypeDef TimHandle;
group-onsemi 0:098463de4c5d 40
group-onsemi 0:098463de4c5d 41 void pwmout_init(pwmout_t* obj, PinName pin)
group-onsemi 0:098463de4c5d 42 {
group-onsemi 0:098463de4c5d 43 // Get the peripheral name from the pin and assign it to the object
group-onsemi 0:098463de4c5d 44 obj->pwm = (PWMName)pinmap_peripheral(pin, PinMap_PWM);
group-onsemi 0:098463de4c5d 45 MBED_ASSERT(obj->pwm != (PWMName)NC);
group-onsemi 0:098463de4c5d 46
group-onsemi 0:098463de4c5d 47 // Get the functions (timer channel, (non)inverted) from the pin and assign it to the object
group-onsemi 0:098463de4c5d 48 uint32_t function = pinmap_function(pin, PinMap_PWM);
group-onsemi 0:098463de4c5d 49 MBED_ASSERT(function != (uint32_t)NC);
group-onsemi 0:098463de4c5d 50 obj->channel = STM_PIN_CHANNEL(function);
group-onsemi 0:098463de4c5d 51 obj->inverted = STM_PIN_INVERTED(function);
group-onsemi 0:098463de4c5d 52
group-onsemi 0:098463de4c5d 53 // Enable TIM clock
group-onsemi 0:098463de4c5d 54 #if defined(TIM1_BASE)
group-onsemi 0:098463de4c5d 55 if (obj->pwm == PWM_1) __HAL_RCC_TIM1_CLK_ENABLE();
group-onsemi 0:098463de4c5d 56 #endif
group-onsemi 0:098463de4c5d 57 #if defined(TIM2_BASE)
group-onsemi 0:098463de4c5d 58 if (obj->pwm == PWM_2) __HAL_RCC_TIM2_CLK_ENABLE();
group-onsemi 0:098463de4c5d 59 #endif
group-onsemi 0:098463de4c5d 60 #if defined(TIM3_BASE)
group-onsemi 0:098463de4c5d 61 if (obj->pwm == PWM_3) __HAL_RCC_TIM3_CLK_ENABLE();
group-onsemi 0:098463de4c5d 62 #endif
group-onsemi 0:098463de4c5d 63 #if defined(TIM4_BASE)
group-onsemi 0:098463de4c5d 64 if (obj->pwm == PWM_4) __HAL_RCC_TIM4_CLK_ENABLE();
group-onsemi 0:098463de4c5d 65 #endif
group-onsemi 0:098463de4c5d 66 #if defined(TIM5_BASE)
group-onsemi 0:098463de4c5d 67 if (obj->pwm == PWM_5) __HAL_RCC_TIM5_CLK_ENABLE();
group-onsemi 0:098463de4c5d 68 #endif
group-onsemi 0:098463de4c5d 69 #if defined(TIM8_BASE)
group-onsemi 0:098463de4c5d 70 if (obj->pwm == PWM_8) __HAL_RCC_TIM8_CLK_ENABLE();
group-onsemi 0:098463de4c5d 71 #endif
group-onsemi 0:098463de4c5d 72 #if defined(TIM9_BASE)
group-onsemi 0:098463de4c5d 73 if (obj->pwm == PWM_9) __HAL_RCC_TIM9_CLK_ENABLE();
group-onsemi 0:098463de4c5d 74 #endif
group-onsemi 0:098463de4c5d 75 #if defined(TIM10_BASE)
group-onsemi 0:098463de4c5d 76 if (obj->pwm == PWM_10) __HAL_RCC_TIM10_CLK_ENABLE();
group-onsemi 0:098463de4c5d 77 #endif
group-onsemi 0:098463de4c5d 78 #if defined(TIM11_BASE)
group-onsemi 0:098463de4c5d 79 if (obj->pwm == PWM_11) __HAL_RCC_TIM11_CLK_ENABLE();
group-onsemi 0:098463de4c5d 80 #endif
group-onsemi 0:098463de4c5d 81 #if defined(TIM12_BASE)
group-onsemi 0:098463de4c5d 82 if (obj->pwm == PWM_12) __HAL_RCC_TIM12_CLK_ENABLE();
group-onsemi 0:098463de4c5d 83 #endif
group-onsemi 0:098463de4c5d 84 #if defined(TIM13_BASE)
group-onsemi 0:098463de4c5d 85 if (obj->pwm == PWM_13) __HAL_RCC_TIM13_CLK_ENABLE();
group-onsemi 0:098463de4c5d 86 #endif
group-onsemi 0:098463de4c5d 87 #if defined(TIM14_BASE)
group-onsemi 0:098463de4c5d 88 if (obj->pwm == PWM_14) __HAL_RCC_TIM14_CLK_ENABLE();
group-onsemi 0:098463de4c5d 89 #endif
group-onsemi 0:098463de4c5d 90
group-onsemi 0:098463de4c5d 91 // Configure GPIO
group-onsemi 0:098463de4c5d 92 pinmap_pinout(pin, PinMap_PWM);
group-onsemi 0:098463de4c5d 93
group-onsemi 0:098463de4c5d 94 obj->pin = pin;
group-onsemi 0:098463de4c5d 95 obj->period = 0;
group-onsemi 0:098463de4c5d 96 obj->pulse = 0;
group-onsemi 0:098463de4c5d 97
group-onsemi 0:098463de4c5d 98 pwmout_period_us(obj, 20000); // 20 ms per default
group-onsemi 0:098463de4c5d 99 }
group-onsemi 0:098463de4c5d 100
group-onsemi 0:098463de4c5d 101 void pwmout_free(pwmout_t* obj)
group-onsemi 0:098463de4c5d 102 {
group-onsemi 0:098463de4c5d 103 // Configure GPIO
group-onsemi 0:098463de4c5d 104 pin_function(obj->pin, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
group-onsemi 0:098463de4c5d 105 }
group-onsemi 0:098463de4c5d 106
group-onsemi 0:098463de4c5d 107 void pwmout_write(pwmout_t* obj, float value)
group-onsemi 0:098463de4c5d 108 {
group-onsemi 0:098463de4c5d 109 TIM_OC_InitTypeDef sConfig;
group-onsemi 0:098463de4c5d 110 int channel = 0;
group-onsemi 0:098463de4c5d 111
group-onsemi 0:098463de4c5d 112 TimHandle.Instance = (TIM_TypeDef *)(obj->pwm);
group-onsemi 0:098463de4c5d 113
group-onsemi 0:098463de4c5d 114 if (value < (float)0.0) {
group-onsemi 0:098463de4c5d 115 value = 0.0;
group-onsemi 0:098463de4c5d 116 } else if (value > (float)1.0) {
group-onsemi 0:098463de4c5d 117 value = 1.0;
group-onsemi 0:098463de4c5d 118 }
group-onsemi 0:098463de4c5d 119
group-onsemi 0:098463de4c5d 120 obj->pulse = (uint32_t)((float)obj->period * value);
group-onsemi 0:098463de4c5d 121
group-onsemi 0:098463de4c5d 122 // Configure channels
group-onsemi 0:098463de4c5d 123 sConfig.OCMode = TIM_OCMODE_PWM1;
group-onsemi 0:098463de4c5d 124 sConfig.Pulse = obj->pulse;
group-onsemi 0:098463de4c5d 125 sConfig.OCPolarity = TIM_OCPOLARITY_HIGH;
group-onsemi 0:098463de4c5d 126 sConfig.OCNPolarity = TIM_OCNPOLARITY_HIGH;
group-onsemi 0:098463de4c5d 127 sConfig.OCFastMode = TIM_OCFAST_DISABLE;
group-onsemi 0:098463de4c5d 128 sConfig.OCIdleState = TIM_OCIDLESTATE_RESET;
group-onsemi 0:098463de4c5d 129 sConfig.OCNIdleState = TIM_OCNIDLESTATE_RESET;
group-onsemi 0:098463de4c5d 130
group-onsemi 0:098463de4c5d 131 switch (obj->channel) {
group-onsemi 0:098463de4c5d 132 case 1:
group-onsemi 0:098463de4c5d 133 channel = TIM_CHANNEL_1;
group-onsemi 0:098463de4c5d 134 break;
group-onsemi 0:098463de4c5d 135 case 2:
group-onsemi 0:098463de4c5d 136 channel = TIM_CHANNEL_2;
group-onsemi 0:098463de4c5d 137 break;
group-onsemi 0:098463de4c5d 138 case 3:
group-onsemi 0:098463de4c5d 139 channel = TIM_CHANNEL_3;
group-onsemi 0:098463de4c5d 140 break;
group-onsemi 0:098463de4c5d 141 case 4:
group-onsemi 0:098463de4c5d 142 channel = TIM_CHANNEL_4;
group-onsemi 0:098463de4c5d 143 break;
group-onsemi 0:098463de4c5d 144 default:
group-onsemi 0:098463de4c5d 145 return;
group-onsemi 0:098463de4c5d 146 }
group-onsemi 0:098463de4c5d 147
group-onsemi 0:098463de4c5d 148 if (HAL_TIM_PWM_ConfigChannel(&TimHandle, &sConfig, channel) != HAL_OK) {
group-onsemi 0:098463de4c5d 149 error("Cannot initialize PWM\n");
group-onsemi 0:098463de4c5d 150 }
group-onsemi 0:098463de4c5d 151
group-onsemi 0:098463de4c5d 152 if (obj->inverted) {
group-onsemi 0:098463de4c5d 153 HAL_TIMEx_PWMN_Start(&TimHandle, channel);
group-onsemi 0:098463de4c5d 154 } else {
group-onsemi 0:098463de4c5d 155 HAL_TIM_PWM_Start(&TimHandle, channel);
group-onsemi 0:098463de4c5d 156 }
group-onsemi 0:098463de4c5d 157 }
group-onsemi 0:098463de4c5d 158
group-onsemi 0:098463de4c5d 159 float pwmout_read(pwmout_t* obj)
group-onsemi 0:098463de4c5d 160 {
group-onsemi 0:098463de4c5d 161 float value = 0;
group-onsemi 0:098463de4c5d 162 if (obj->period > 0) {
group-onsemi 0:098463de4c5d 163 value = (float)(obj->pulse) / (float)(obj->period);
group-onsemi 0:098463de4c5d 164 }
group-onsemi 0:098463de4c5d 165 return ((value > (float)1.0) ? (float)(1.0) : (value));
group-onsemi 0:098463de4c5d 166 }
group-onsemi 0:098463de4c5d 167
group-onsemi 0:098463de4c5d 168 void pwmout_period(pwmout_t* obj, float seconds)
group-onsemi 0:098463de4c5d 169 {
group-onsemi 0:098463de4c5d 170 pwmout_period_us(obj, seconds * 1000000.0f);
group-onsemi 0:098463de4c5d 171 }
group-onsemi 0:098463de4c5d 172
group-onsemi 0:098463de4c5d 173 void pwmout_period_ms(pwmout_t* obj, int ms)
group-onsemi 0:098463de4c5d 174 {
group-onsemi 0:098463de4c5d 175 pwmout_period_us(obj, ms * 1000);
group-onsemi 0:098463de4c5d 176 }
group-onsemi 0:098463de4c5d 177
group-onsemi 0:098463de4c5d 178 void pwmout_period_us(pwmout_t* obj, int us)
group-onsemi 0:098463de4c5d 179 {
group-onsemi 0:098463de4c5d 180 TimHandle.Instance = (TIM_TypeDef *)(obj->pwm);
group-onsemi 0:098463de4c5d 181 RCC_ClkInitTypeDef RCC_ClkInitStruct;
group-onsemi 0:098463de4c5d 182 uint32_t PclkFreq;
group-onsemi 0:098463de4c5d 183 uint32_t APBxCLKDivider;
group-onsemi 0:098463de4c5d 184 float dc = pwmout_read(obj);
group-onsemi 0:098463de4c5d 185
group-onsemi 0:098463de4c5d 186 __HAL_TIM_DISABLE(&TimHandle);
group-onsemi 0:098463de4c5d 187
group-onsemi 0:098463de4c5d 188 // Get clock configuration
group-onsemi 0:098463de4c5d 189 // Note: PclkFreq contains here the Latency (not used after)
group-onsemi 0:098463de4c5d 190 HAL_RCC_GetClockConfig(&RCC_ClkInitStruct, &PclkFreq);
group-onsemi 0:098463de4c5d 191
group-onsemi 0:098463de4c5d 192 // Get the PCLK and APBCLK divider related to the timer
group-onsemi 0:098463de4c5d 193 switch (obj->pwm) {
group-onsemi 0:098463de4c5d 194
group-onsemi 0:098463de4c5d 195 // APB1 clock
group-onsemi 0:098463de4c5d 196 #if defined(TIM2_BASE)
group-onsemi 0:098463de4c5d 197 case PWM_2:
group-onsemi 0:098463de4c5d 198 #endif
group-onsemi 0:098463de4c5d 199 #if defined(TIM3_BASE)
group-onsemi 0:098463de4c5d 200 case PWM_3:
group-onsemi 0:098463de4c5d 201 #endif
group-onsemi 0:098463de4c5d 202 #if defined(TIM4_BASE)
group-onsemi 0:098463de4c5d 203 case PWM_4:
group-onsemi 0:098463de4c5d 204 #endif
group-onsemi 0:098463de4c5d 205 #if defined(TIM5_BASE)
group-onsemi 0:098463de4c5d 206 case PWM_5:
group-onsemi 0:098463de4c5d 207 #endif
group-onsemi 0:098463de4c5d 208 #if defined(TIM12_BASE)
group-onsemi 0:098463de4c5d 209 case PWM_12:
group-onsemi 0:098463de4c5d 210 #endif
group-onsemi 0:098463de4c5d 211 #if defined(TIM13_BASE)
group-onsemi 0:098463de4c5d 212 case PWM_13:
group-onsemi 0:098463de4c5d 213 #endif
group-onsemi 0:098463de4c5d 214 #if defined(TIM14_BASE)
group-onsemi 0:098463de4c5d 215 case PWM_14:
group-onsemi 0:098463de4c5d 216 #endif
group-onsemi 0:098463de4c5d 217 PclkFreq = HAL_RCC_GetPCLK1Freq();
group-onsemi 0:098463de4c5d 218 APBxCLKDivider = RCC_ClkInitStruct.APB1CLKDivider;
group-onsemi 0:098463de4c5d 219 break;
group-onsemi 0:098463de4c5d 220
group-onsemi 0:098463de4c5d 221 // APB2 clock
group-onsemi 0:098463de4c5d 222 #if defined(TIM1_BASE)
group-onsemi 0:098463de4c5d 223 case PWM_1:
group-onsemi 0:098463de4c5d 224 #endif
group-onsemi 0:098463de4c5d 225 #if defined(TIM8_BASE)
group-onsemi 0:098463de4c5d 226 case PWM_8:
group-onsemi 0:098463de4c5d 227 #endif
group-onsemi 0:098463de4c5d 228 #if defined(TIM9_BASE)
group-onsemi 0:098463de4c5d 229 case PWM_9:
group-onsemi 0:098463de4c5d 230 #endif
group-onsemi 0:098463de4c5d 231 #if defined(TIM10_BASE)
group-onsemi 0:098463de4c5d 232 case PWM_10:
group-onsemi 0:098463de4c5d 233 #endif
group-onsemi 0:098463de4c5d 234 #if defined(TIM11_BASE)
group-onsemi 0:098463de4c5d 235 case PWM_11:
group-onsemi 0:098463de4c5d 236 #endif
group-onsemi 0:098463de4c5d 237 PclkFreq = HAL_RCC_GetPCLK2Freq();
group-onsemi 0:098463de4c5d 238 APBxCLKDivider = RCC_ClkInitStruct.APB2CLKDivider;
group-onsemi 0:098463de4c5d 239 break;
group-onsemi 0:098463de4c5d 240 default:
group-onsemi 0:098463de4c5d 241 return;
group-onsemi 0:098463de4c5d 242 }
group-onsemi 0:098463de4c5d 243
group-onsemi 0:098463de4c5d 244 TimHandle.Init.Period = us - 1;
group-onsemi 0:098463de4c5d 245 // TIMxCLK = PCLKx when the APB prescaler = 1 else TIMxCLK = 2 * PCLKx
group-onsemi 0:098463de4c5d 246 if (APBxCLKDivider == RCC_HCLK_DIV1)
group-onsemi 0:098463de4c5d 247 TimHandle.Init.Prescaler = (uint16_t)((PclkFreq) / 1000000) - 1; // 1 us tick
group-onsemi 0:098463de4c5d 248 else
group-onsemi 0:098463de4c5d 249 TimHandle.Init.Prescaler = (uint16_t)((PclkFreq * 2) / 1000000) - 1; // 1 us tick
group-onsemi 0:098463de4c5d 250 TimHandle.Init.ClockDivision = 0;
group-onsemi 0:098463de4c5d 251 TimHandle.Init.CounterMode = TIM_COUNTERMODE_UP;
group-onsemi 0:098463de4c5d 252
group-onsemi 0:098463de4c5d 253 if (HAL_TIM_PWM_Init(&TimHandle) != HAL_OK) {
group-onsemi 0:098463de4c5d 254 error("Cannot initialize PWM\n");
group-onsemi 0:098463de4c5d 255 }
group-onsemi 0:098463de4c5d 256
group-onsemi 0:098463de4c5d 257 // Set duty cycle again
group-onsemi 0:098463de4c5d 258 pwmout_write(obj, dc);
group-onsemi 0:098463de4c5d 259
group-onsemi 0:098463de4c5d 260 // Save for future use
group-onsemi 0:098463de4c5d 261 obj->period = us;
group-onsemi 0:098463de4c5d 262
group-onsemi 0:098463de4c5d 263 __HAL_TIM_ENABLE(&TimHandle);
group-onsemi 0:098463de4c5d 264 }
group-onsemi 0:098463de4c5d 265
group-onsemi 0:098463de4c5d 266 void pwmout_pulsewidth(pwmout_t* obj, float seconds)
group-onsemi 0:098463de4c5d 267 {
group-onsemi 0:098463de4c5d 268 pwmout_pulsewidth_us(obj, seconds * 1000000.0f);
group-onsemi 0:098463de4c5d 269 }
group-onsemi 0:098463de4c5d 270
group-onsemi 0:098463de4c5d 271 void pwmout_pulsewidth_ms(pwmout_t* obj, int ms)
group-onsemi 0:098463de4c5d 272 {
group-onsemi 0:098463de4c5d 273 pwmout_pulsewidth_us(obj, ms * 1000);
group-onsemi 0:098463de4c5d 274 }
group-onsemi 0:098463de4c5d 275
group-onsemi 0:098463de4c5d 276 void pwmout_pulsewidth_us(pwmout_t* obj, int us)
group-onsemi 0:098463de4c5d 277 {
group-onsemi 0:098463de4c5d 278 float value = (float)us / (float)obj->period;
group-onsemi 0:098463de4c5d 279 pwmout_write(obj, value);
group-onsemi 0:098463de4c5d 280 }
group-onsemi 0:098463de4c5d 281
group-onsemi 0:098463de4c5d 282 #endif