Flotsam / mbed-modifed

Modified version of the mbed library for use with the Nucleo boards.

Dependents:   EEPROMWrite Full-Project

Fork of mbed-src by mbed official

targets/hal/TARGET_STM/TARGET_STM32F0/pwmout_api.c@630:825f75ca301e, 2015-09-28 (annotated)

Committer:
mbed_official
Date:
Mon Sep 28 10:45:10 2015 +0100
Revision:
630:825f75ca301e
Parent:
469:fc4922e0c183 
Synchronized with git revision 54fbe4144faf309c37205a5d39fa665daa919f10



Full URL: https://github.com/mbedmicro/mbed/commit/54fbe4144faf309c37205a5d39fa665daa919f10/



NUCLEO_F031K6 : Add new target

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 469:fc4922e0c183 1 /* mbed Microcontroller Library
mbed_official 469:fc4922e0c183 2 *******************************************************************************
mbed_official 469:fc4922e0c183 3 * Copyright (c) 2014, STMicroelectronics
mbed_official 469:fc4922e0c183 4 * All rights reserved.
mbed_official 469:fc4922e0c183 5 *
mbed_official 469:fc4922e0c183 6 * Redistribution and use in source and binary forms, with or without
mbed_official 469:fc4922e0c183 7 * modification, are permitted provided that the following conditions are met:
mbed_official 469:fc4922e0c183 8 *
mbed_official 469:fc4922e0c183 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 469:fc4922e0c183 10 * this list of conditions and the following disclaimer.
mbed_official 469:fc4922e0c183 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 469:fc4922e0c183 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 469:fc4922e0c183 13 * and/or other materials provided with the distribution.
mbed_official 469:fc4922e0c183 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 469:fc4922e0c183 15 * may be used to endorse or promote products derived from this software
mbed_official 469:fc4922e0c183 16 * without specific prior written permission.
mbed_official 469:fc4922e0c183 17 *
mbed_official 469:fc4922e0c183 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 469:fc4922e0c183 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 469:fc4922e0c183 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 469:fc4922e0c183 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 469:fc4922e0c183 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 469:fc4922e0c183 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 469:fc4922e0c183 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 469:fc4922e0c183 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 469:fc4922e0c183 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 469:fc4922e0c183 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 469:fc4922e0c183 28 *******************************************************************************
mbed_official 469:fc4922e0c183 29 */
mbed_official 469:fc4922e0c183 30 #include "pwmout_api.h"
mbed_official 469:fc4922e0c183 31
mbed_official 469:fc4922e0c183 32 #if DEVICE_PWMOUT
mbed_official 469:fc4922e0c183 33
mbed_official 469:fc4922e0c183 34 #include "cmsis.h"
mbed_official 469:fc4922e0c183 35 #include "pinmap.h"
mbed_official 469:fc4922e0c183 36 #include "mbed_error.h"
mbed_official 469:fc4922e0c183 37 #include "PeripheralPins.h"
mbed_official 469:fc4922e0c183 38
mbed_official 469:fc4922e0c183 39 static TIM_HandleTypeDef TimHandle;
mbed_official 469:fc4922e0c183 40
mbed_official 630:825f75ca301e 41 void pwmout_init(pwmout_t* obj, PinName pin) {
mbed_official 469:fc4922e0c183 42 // Get the peripheral name from the pin and assign it to the object
mbed_official 469:fc4922e0c183 43 obj->pwm = (PWMName)pinmap_peripheral(pin, PinMap_PWM);
mbed_official 469:fc4922e0c183 44
mbed_official 469:fc4922e0c183 45 if (obj->pwm == (PWMName)NC) {
mbed_official 469:fc4922e0c183 46 error("PWM error: pinout mapping failed.");
mbed_official 469:fc4922e0c183 47 }
mbed_official 469:fc4922e0c183 48
mbed_official 469:fc4922e0c183 49 // Enable TIM clock
mbed_official 469:fc4922e0c183 50 #if defined(TIM1_BASE)
mbed_official 469:fc4922e0c183 51 if (obj->pwm == PWM_1) __TIM1_CLK_ENABLE();
mbed_official 469:fc4922e0c183 52 #endif
mbed_official 469:fc4922e0c183 53 #if defined(TIM2_BASE)
mbed_official 469:fc4922e0c183 54 if (obj->pwm == PWM_2) __TIM2_CLK_ENABLE();
mbed_official 469:fc4922e0c183 55 #endif
mbed_official 630:825f75ca301e 56 #if defined(TIM3_BASE)
mbed_official 469:fc4922e0c183 57 if (obj->pwm == PWM_3) __TIM3_CLK_ENABLE();
mbed_official 630:825f75ca301e 58 #endif
mbed_official 630:825f75ca301e 59 #if defined(TIM14_BASE)
mbed_official 469:fc4922e0c183 60 if (obj->pwm == PWM_14) __TIM14_CLK_ENABLE();
mbed_official 630:825f75ca301e 61 #endif
mbed_official 630:825f75ca301e 62 #if defined(TIM15_BASE)
mbed_official 469:fc4922e0c183 63 if (obj->pwm == PWM_15) __TIM15_CLK_ENABLE();
mbed_official 630:825f75ca301e 64 #endif
mbed_official 630:825f75ca301e 65 #if defined(TIM16_BASE)
mbed_official 469:fc4922e0c183 66 if (obj->pwm == PWM_16) __TIM16_CLK_ENABLE();
mbed_official 630:825f75ca301e 67 #endif
mbed_official 630:825f75ca301e 68 #if defined(TIM17_BASE)
mbed_official 469:fc4922e0c183 69 if (obj->pwm == PWM_17) __TIM17_CLK_ENABLE();
mbed_official 630:825f75ca301e 70 #endif
mbed_official 469:fc4922e0c183 71
mbed_official 469:fc4922e0c183 72 // Configure GPIO
mbed_official 469:fc4922e0c183 73 pinmap_pinout(pin, PinMap_PWM);
mbed_official 469:fc4922e0c183 74
mbed_official 469:fc4922e0c183 75 obj->pin = pin;
mbed_official 469:fc4922e0c183 76 obj->period = 0;
mbed_official 469:fc4922e0c183 77 obj->pulse = 0;
mbed_official 469:fc4922e0c183 78
mbed_official 469:fc4922e0c183 79 pwmout_period_us(obj, 20000); // 20 ms per default
mbed_official 469:fc4922e0c183 80 }
mbed_official 469:fc4922e0c183 81
mbed_official 630:825f75ca301e 82 void pwmout_free(pwmout_t* obj) {
mbed_official 469:fc4922e0c183 83 // Configure GPIO
mbed_official 469:fc4922e0c183 84 pin_function(obj->pin, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
mbed_official 469:fc4922e0c183 85 }
mbed_official 469:fc4922e0c183 86
mbed_official 630:825f75ca301e 87 void pwmout_write(pwmout_t* obj, float value) {
mbed_official 469:fc4922e0c183 88 TIM_OC_InitTypeDef sConfig;
mbed_official 469:fc4922e0c183 89 int channel = 0;
mbed_official 469:fc4922e0c183 90 int complementary_channel = 0;
mbed_official 469:fc4922e0c183 91
mbed_official 469:fc4922e0c183 92 TimHandle.Instance = (TIM_TypeDef *)(obj->pwm);
mbed_official 469:fc4922e0c183 93
mbed_official 469:fc4922e0c183 94 if (value < (float)0.0) {
mbed_official 469:fc4922e0c183 95 value = 0.0;
mbed_official 469:fc4922e0c183 96 } else if (value > (float)1.0) {
mbed_official 469:fc4922e0c183 97 value = 1.0;
mbed_official 469:fc4922e0c183 98 }
mbed_official 469:fc4922e0c183 99
mbed_official 469:fc4922e0c183 100 obj->pulse = (uint32_t)((float)obj->period * value);
mbed_official 469:fc4922e0c183 101
mbed_official 469:fc4922e0c183 102 // Configure channels
mbed_official 469:fc4922e0c183 103 sConfig.OCMode = TIM_OCMODE_PWM1;
mbed_official 469:fc4922e0c183 104 sConfig.Pulse = obj->pulse;
mbed_official 469:fc4922e0c183 105 sConfig.OCPolarity = TIM_OCPOLARITY_HIGH;
mbed_official 469:fc4922e0c183 106 sConfig.OCNPolarity = TIM_OCNPOLARITY_HIGH;
mbed_official 469:fc4922e0c183 107 sConfig.OCFastMode = TIM_OCFAST_DISABLE;
mbed_official 469:fc4922e0c183 108 sConfig.OCIdleState = TIM_OCIDLESTATE_RESET;
mbed_official 469:fc4922e0c183 109 sConfig.OCNIdleState = TIM_OCNIDLESTATE_RESET;
mbed_official 469:fc4922e0c183 110
mbed_official 630:825f75ca301e 111 #if defined (TARGET_STM32F031K6)
mbed_official 630:825f75ca301e 112 switch (obj->pin) {
mbed_official 630:825f75ca301e 113 // Channels 1
mbed_official 630:825f75ca301e 114 case PA_4:
mbed_official 630:825f75ca301e 115 case PA_6:
mbed_official 630:825f75ca301e 116 case PA_8:
mbed_official 630:825f75ca301e 117 case PB_4:
mbed_official 630:825f75ca301e 118 channel = TIM_CHANNEL_1;
mbed_official 630:825f75ca301e 119 break;
mbed_official 630:825f75ca301e 120 // Channels 1N
mbed_official 630:825f75ca301e 121 case PB_6:
mbed_official 630:825f75ca301e 122 case PB_7:
mbed_official 630:825f75ca301e 123 channel = TIM_CHANNEL_1;
mbed_official 630:825f75ca301e 124 complementary_channel = 1;
mbed_official 630:825f75ca301e 125 break;
mbed_official 630:825f75ca301e 126 // Channels 2
mbed_official 630:825f75ca301e 127 case PA_7:
mbed_official 630:825f75ca301e 128 case PA_9:
mbed_official 630:825f75ca301e 129 case PB_5:
mbed_official 630:825f75ca301e 130 channel = TIM_CHANNEL_2;
mbed_official 630:825f75ca301e 131 break;
mbed_official 630:825f75ca301e 132 // Channels 3
mbed_official 630:825f75ca301e 133 case PA_10:
mbed_official 630:825f75ca301e 134 case PB_0:
mbed_official 630:825f75ca301e 135 channel = TIM_CHANNEL_3;
mbed_official 630:825f75ca301e 136 break;
mbed_official 630:825f75ca301e 137 // Channels 4
mbed_official 630:825f75ca301e 138 case PA_11:
mbed_official 630:825f75ca301e 139 case PB_1:
mbed_official 630:825f75ca301e 140 channel = TIM_CHANNEL_4;
mbed_official 630:825f75ca301e 141 break;
mbed_official 630:825f75ca301e 142 default:
mbed_official 630:825f75ca301e 143 return;
mbed_official 630:825f75ca301e 144 }
mbed_official 630:825f75ca301e 145 #elif defined (TARGET_STM32F030R8) || defined (TARGET_STM32F051R8)
mbed_official 469:fc4922e0c183 146 switch (obj->pin) {
mbed_official 469:fc4922e0c183 147 // Channels 1
mbed_official 469:fc4922e0c183 148 case PA_4:
mbed_official 469:fc4922e0c183 149 case PA_6:
mbed_official 469:fc4922e0c183 150 case PB_1:
mbed_official 469:fc4922e0c183 151 case PB_4:
mbed_official 469:fc4922e0c183 152 case PB_8:
mbed_official 469:fc4922e0c183 153 case PB_9:
mbed_official 469:fc4922e0c183 154 case PB_14:
mbed_official 469:fc4922e0c183 155 case PC_6:
mbed_official 469:fc4922e0c183 156 channel = TIM_CHANNEL_1;
mbed_official 469:fc4922e0c183 157 break;
mbed_official 469:fc4922e0c183 158 // Channels 1N
mbed_official 469:fc4922e0c183 159 case PB_6:
mbed_official 469:fc4922e0c183 160 case PB_7:
mbed_official 469:fc4922e0c183 161 channel = TIM_CHANNEL_1;
mbed_official 469:fc4922e0c183 162 complementary_channel = 1;
mbed_official 469:fc4922e0c183 163 break;
mbed_official 469:fc4922e0c183 164 // Channels 2
mbed_official 469:fc4922e0c183 165 case PA_7:
mbed_official 469:fc4922e0c183 166 case PB_5:
mbed_official 469:fc4922e0c183 167 case PB_15:
mbed_official 469:fc4922e0c183 168 case PC_7:
mbed_official 469:fc4922e0c183 169 channel = TIM_CHANNEL_2;
mbed_official 469:fc4922e0c183 170 break;
mbed_official 469:fc4922e0c183 171 // Channels 3
mbed_official 469:fc4922e0c183 172 case PB_0:
mbed_official 469:fc4922e0c183 173 case PC_8:
mbed_official 469:fc4922e0c183 174 channel = TIM_CHANNEL_3;
mbed_official 469:fc4922e0c183 175 break;
mbed_official 469:fc4922e0c183 176 // Channels 4
mbed_official 469:fc4922e0c183 177 case PC_9:
mbed_official 469:fc4922e0c183 178 channel = TIM_CHANNEL_4;
mbed_official 469:fc4922e0c183 179 break;
mbed_official 469:fc4922e0c183 180 default:
mbed_official 469:fc4922e0c183 181 return;
mbed_official 469:fc4922e0c183 182 }
mbed_official 469:fc4922e0c183 183
mbed_official 469:fc4922e0c183 184 #else
mbed_official 469:fc4922e0c183 185 switch (obj->pin) {
mbed_official 469:fc4922e0c183 186 // Channels 1
mbed_official 469:fc4922e0c183 187 case PA_2:
mbed_official 469:fc4922e0c183 188 case PA_4:
mbed_official 469:fc4922e0c183 189 case PA_6:
mbed_official 469:fc4922e0c183 190 case PA_7:
mbed_official 469:fc4922e0c183 191 case PA_8:
mbed_official 469:fc4922e0c183 192 case PB_1:
mbed_official 469:fc4922e0c183 193 case PB_4:
mbed_official 469:fc4922e0c183 194 case PB_8:
mbed_official 469:fc4922e0c183 195 case PB_9:
mbed_official 469:fc4922e0c183 196 case PB_14:
mbed_official 469:fc4922e0c183 197 case PC_6:
mbed_official 469:fc4922e0c183 198 channel = TIM_CHANNEL_1;
mbed_official 469:fc4922e0c183 199 break;
mbed_official 469:fc4922e0c183 200 // Channels 1N
mbed_official 469:fc4922e0c183 201 case PA_1:
mbed_official 469:fc4922e0c183 202 case PB_6:
mbed_official 469:fc4922e0c183 203 case PB_7:
mbed_official 469:fc4922e0c183 204 case PB_13:
mbed_official 469:fc4922e0c183 205 channel = TIM_CHANNEL_1;
mbed_official 469:fc4922e0c183 206 complementary_channel = 1;
mbed_official 469:fc4922e0c183 207 break;
mbed_official 469:fc4922e0c183 208 // Channels 2
mbed_official 469:fc4922e0c183 209 case PA_3:
mbed_official 469:fc4922e0c183 210 case PA_9:
mbed_official 469:fc4922e0c183 211 case PB_5:
mbed_official 469:fc4922e0c183 212 case PB_15:
mbed_official 469:fc4922e0c183 213 case PC_7:
mbed_official 469:fc4922e0c183 214 channel = TIM_CHANNEL_2;
mbed_official 469:fc4922e0c183 215 break;
mbed_official 469:fc4922e0c183 216 // Channels 3
mbed_official 469:fc4922e0c183 217 case PA_10:
mbed_official 469:fc4922e0c183 218 case PB_0:
mbed_official 469:fc4922e0c183 219 case PC_8:
mbed_official 469:fc4922e0c183 220 channel = TIM_CHANNEL_3;
mbed_official 469:fc4922e0c183 221 break;
mbed_official 469:fc4922e0c183 222 // Channels 4
mbed_official 469:fc4922e0c183 223 case PA_11:
mbed_official 469:fc4922e0c183 224 case PC_9:
mbed_official 469:fc4922e0c183 225 channel = TIM_CHANNEL_4;
mbed_official 469:fc4922e0c183 226 break;
mbed_official 469:fc4922e0c183 227 default:
mbed_official 469:fc4922e0c183 228 return;
mbed_official 469:fc4922e0c183 229 }
mbed_official 469:fc4922e0c183 230
mbed_official 469:fc4922e0c183 231 #endif
mbed_official 469:fc4922e0c183 232
mbed_official 469:fc4922e0c183 233 HAL_TIM_PWM_ConfigChannel(&TimHandle, &sConfig, channel);
mbed_official 469:fc4922e0c183 234
mbed_official 469:fc4922e0c183 235 if (complementary_channel) {
mbed_official 469:fc4922e0c183 236 HAL_TIMEx_PWMN_Start(&TimHandle, channel);
mbed_official 469:fc4922e0c183 237 } else {
mbed_official 469:fc4922e0c183 238 HAL_TIM_PWM_Start(&TimHandle, channel);
mbed_official 469:fc4922e0c183 239 }
mbed_official 469:fc4922e0c183 240 }
mbed_official 469:fc4922e0c183 241
mbed_official 630:825f75ca301e 242 float pwmout_read(pwmout_t* obj) {
mbed_official 469:fc4922e0c183 243 float value = 0;
mbed_official 469:fc4922e0c183 244 if (obj->period > 0) {
mbed_official 469:fc4922e0c183 245 value = (float)(obj->pulse) / (float)(obj->period);
mbed_official 469:fc4922e0c183 246 }
mbed_official 469:fc4922e0c183 247 return ((value > (float)1.0) ? (float)(1.0) : (value));
mbed_official 469:fc4922e0c183 248 }
mbed_official 469:fc4922e0c183 249
mbed_official 630:825f75ca301e 250 void pwmout_period(pwmout_t* obj, float seconds) {
mbed_official 469:fc4922e0c183 251 pwmout_period_us(obj, seconds * 1000000.0f);
mbed_official 469:fc4922e0c183 252 }
mbed_official 469:fc4922e0c183 253
mbed_official 630:825f75ca301e 254 void pwmout_period_ms(pwmout_t* obj, int ms) {
mbed_official 469:fc4922e0c183 255 pwmout_period_us(obj, ms * 1000);
mbed_official 469:fc4922e0c183 256 }
mbed_official 469:fc4922e0c183 257
mbed_official 630:825f75ca301e 258 void pwmout_period_us(pwmout_t* obj, int us) {
mbed_official 469:fc4922e0c183 259 TimHandle.Instance = (TIM_TypeDef *)(obj->pwm);
mbed_official 469:fc4922e0c183 260
mbed_official 469:fc4922e0c183 261 float dc = pwmout_read(obj);
mbed_official 469:fc4922e0c183 262
mbed_official 469:fc4922e0c183 263 __HAL_TIM_DISABLE(&TimHandle);
mbed_official 469:fc4922e0c183 264
mbed_official 469:fc4922e0c183 265 // Update the SystemCoreClock variable
mbed_official 469:fc4922e0c183 266 SystemCoreClockUpdate();
mbed_official 469:fc4922e0c183 267
mbed_official 469:fc4922e0c183 268 TimHandle.Init.Period = us - 1;
mbed_official 469:fc4922e0c183 269 TimHandle.Init.Prescaler = (uint16_t)(SystemCoreClock / 1000000) - 1; // 1 µs tick
mbed_official 469:fc4922e0c183 270 TimHandle.Init.ClockDivision = 0;
mbed_official 469:fc4922e0c183 271 TimHandle.Init.CounterMode = TIM_COUNTERMODE_UP;
mbed_official 469:fc4922e0c183 272 HAL_TIM_PWM_Init(&TimHandle);
mbed_official 469:fc4922e0c183 273
mbed_official 469:fc4922e0c183 274 // Set duty cycle again
mbed_official 469:fc4922e0c183 275 pwmout_write(obj, dc);
mbed_official 469:fc4922e0c183 276
mbed_official 469:fc4922e0c183 277 // Save for future use
mbed_official 469:fc4922e0c183 278 obj->period = us;
mbed_official 469:fc4922e0c183 279
mbed_official 469:fc4922e0c183 280 __HAL_TIM_ENABLE(&TimHandle);
mbed_official 469:fc4922e0c183 281 }
mbed_official 469:fc4922e0c183 282
mbed_official 630:825f75ca301e 283 void pwmout_pulsewidth(pwmout_t* obj, float seconds) {
mbed_official 469:fc4922e0c183 284 pwmout_pulsewidth_us(obj, seconds * 1000000.0f);
mbed_official 469:fc4922e0c183 285 }
mbed_official 469:fc4922e0c183 286
mbed_official 630:825f75ca301e 287 void pwmout_pulsewidth_ms(pwmout_t* obj, int ms) {
mbed_official 469:fc4922e0c183 288 pwmout_pulsewidth_us(obj, ms * 1000);
mbed_official 469:fc4922e0c183 289 }
mbed_official 469:fc4922e0c183 290
mbed_official 630:825f75ca301e 291 void pwmout_pulsewidth_us(pwmout_t* obj, int us) {
mbed_official 469:fc4922e0c183 292 float value = (float)us / (float)obj->period;
mbed_official 469:fc4922e0c183 293 pwmout_write(obj, value);
mbed_official 469:fc4922e0c183 294 }
mbed_official 469:fc4922e0c183 295
mbed_official 469:fc4922e0c183 296 #endif