Thomas Byrne / mbed-src-stm32f030k6

Important changes to repositories hosted on mbed.com

Mbed hosted mercurial repositories are deprecated and are due to be permanently deleted in July 2026.

To keep a copy of this software download the repository Zip archive or clone locally using Mercurial.

It is also possible to export all your personal repositories from the account settings page.

Fork of mbed-src by mbed official

targets/hal/TARGET_STM/TARGET_STM32F4/pwmout_api.c@511:532f83b66a7f, 2015-04-09 (annotated)

Committer:
mbed_official
Date:
Thu Apr 09 12:15:08 2015 +0100
Revision:
511:532f83b66a7f
Parent:
442:d916d321e60f
Child:
555:f8b0f61305ee
Synchronized with git revision 5a81e89daabb57e88c45a1c1979735071b85fa00



Full URL: https://github.com/mbedmicro/mbed/commit/5a81e89daabb57e88c45a1c1979735071b85fa00/



TARGET_STMF4 - reorg hal

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 340:28d1f895c6fe 1 /* mbed Microcontroller Library
mbed_official 340:28d1f895c6fe 2 *******************************************************************************
mbed_official 340:28d1f895c6fe 3 * Copyright (c) 2014, STMicroelectronics
mbed_official 340:28d1f895c6fe 4 * All rights reserved.
mbed_official 340:28d1f895c6fe 5 *
mbed_official 340:28d1f895c6fe 6 * Redistribution and use in source and binary forms, with or without
mbed_official 340:28d1f895c6fe 7 * modification, are permitted provided that the following conditions are met:
mbed_official 340:28d1f895c6fe 8 *
mbed_official 340:28d1f895c6fe 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 340:28d1f895c6fe 10 * this list of conditions and the following disclaimer.
mbed_official 340:28d1f895c6fe 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 340:28d1f895c6fe 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 340:28d1f895c6fe 13 * and/or other materials provided with the distribution.
mbed_official 340:28d1f895c6fe 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 340:28d1f895c6fe 15 * may be used to endorse or promote products derived from this software
mbed_official 340:28d1f895c6fe 16 * without specific prior written permission.
mbed_official 340:28d1f895c6fe 17 *
mbed_official 340:28d1f895c6fe 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 340:28d1f895c6fe 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 340:28d1f895c6fe 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 340:28d1f895c6fe 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 340:28d1f895c6fe 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 340:28d1f895c6fe 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 340:28d1f895c6fe 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 340:28d1f895c6fe 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 340:28d1f895c6fe 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 340:28d1f895c6fe 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 340:28d1f895c6fe 28 *******************************************************************************
mbed_official 340:28d1f895c6fe 29 */
mbed_official 340:28d1f895c6fe 30 #include "pwmout_api.h"
mbed_official 340:28d1f895c6fe 31
mbed_official 340:28d1f895c6fe 32 #if DEVICE_PWMOUT
mbed_official 340:28d1f895c6fe 33
mbed_official 340:28d1f895c6fe 34 #include "cmsis.h"
mbed_official 340:28d1f895c6fe 35 #include "pinmap.h"
mbed_official 340:28d1f895c6fe 36 #include "mbed_error.h"
mbed_official 428:4ddf7f7eabbb 37 #include "PeripheralPins.h"
mbed_official 340:28d1f895c6fe 38
mbed_official 340:28d1f895c6fe 39 static TIM_HandleTypeDef TimHandle;
mbed_official 340:28d1f895c6fe 40
mbed_official 340:28d1f895c6fe 41 void pwmout_init(pwmout_t* obj, PinName pin)
mbed_official 340:28d1f895c6fe 42 {
mbed_official 340:28d1f895c6fe 43 // Get the peripheral name from the pin and assign it to the object
mbed_official 340:28d1f895c6fe 44 obj->pwm = (PWMName)pinmap_peripheral(pin, PinMap_PWM);
mbed_official 340:28d1f895c6fe 45
mbed_official 511:532f83b66a7f 46 // Get the functions (timer channel, (non)inverted) from the pin and assign it to the object
mbed_official 511:532f83b66a7f 47 uint32_t function = pinmap_function(pin, PinMap_PWM);
mbed_official 511:532f83b66a7f 48 MBED_ASSERT(function != (uint32_t)NC);
mbed_official 511:532f83b66a7f 49 obj->channel = STM_PIN_CHANNEL(function);
mbed_official 511:532f83b66a7f 50 obj->inverted = STM_PIN_INVERTED(function);
mbed_official 511:532f83b66a7f 51
mbed_official 340:28d1f895c6fe 52 if (obj->pwm == (PWMName)NC) {
mbed_official 340:28d1f895c6fe 53 error("PWM error: pinout mapping failed.");
mbed_official 340:28d1f895c6fe 54 }
mbed_official 340:28d1f895c6fe 55
mbed_official 340:28d1f895c6fe 56 // Enable TIM clock
mbed_official 340:28d1f895c6fe 57 if (obj->pwm == PWM_1) __TIM1_CLK_ENABLE();
mbed_official 340:28d1f895c6fe 58 if (obj->pwm == PWM_2) __TIM2_CLK_ENABLE();
mbed_official 340:28d1f895c6fe 59 if (obj->pwm == PWM_3) __TIM3_CLK_ENABLE();
mbed_official 340:28d1f895c6fe 60 if (obj->pwm == PWM_4) __TIM4_CLK_ENABLE();
mbed_official 511:532f83b66a7f 61 #if defined(TIM8_BASE)
mbed_official 511:532f83b66a7f 62 if (obj->pwm == PWM_8) __TIM8_CLK_ENABLE();
mbed_official 511:532f83b66a7f 63 #endif
mbed_official 340:28d1f895c6fe 64 if (obj->pwm == PWM_9) __TIM9_CLK_ENABLE();
mbed_official 340:28d1f895c6fe 65 if (obj->pwm == PWM_10) __TIM10_CLK_ENABLE();
mbed_official 340:28d1f895c6fe 66 if (obj->pwm == PWM_11) __TIM11_CLK_ENABLE();
mbed_official 511:532f83b66a7f 67 #if defined(TIM13_BASE)
mbed_official 511:532f83b66a7f 68 if (obj->pwm == PWM_13) __TIM13_CLK_ENABLE();
mbed_official 511:532f83b66a7f 69 #endif
mbed_official 511:532f83b66a7f 70 #if defined(TIM14_BASE)
mbed_official 511:532f83b66a7f 71 if (obj->pwm == PWM_14) __TIM14_CLK_ENABLE();
mbed_official 511:532f83b66a7f 72 #endif
mbed_official 340:28d1f895c6fe 73
mbed_official 340:28d1f895c6fe 74 // Configure GPIO
mbed_official 340:28d1f895c6fe 75 pinmap_pinout(pin, PinMap_PWM);
mbed_official 340:28d1f895c6fe 76
mbed_official 340:28d1f895c6fe 77 obj->pin = pin;
mbed_official 340:28d1f895c6fe 78 obj->period = 0;
mbed_official 340:28d1f895c6fe 79 obj->pulse = 0;
mbed_official 340:28d1f895c6fe 80
mbed_official 340:28d1f895c6fe 81 pwmout_period_us(obj, 20000); // 20 ms per default
mbed_official 340:28d1f895c6fe 82 }
mbed_official 340:28d1f895c6fe 83
mbed_official 340:28d1f895c6fe 84 void pwmout_free(pwmout_t* obj)
mbed_official 340:28d1f895c6fe 85 {
mbed_official 340:28d1f895c6fe 86 // Configure GPIO
mbed_official 340:28d1f895c6fe 87 pin_function(obj->pin, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
mbed_official 340:28d1f895c6fe 88 }
mbed_official 340:28d1f895c6fe 89
mbed_official 340:28d1f895c6fe 90 void pwmout_write(pwmout_t* obj, float value)
mbed_official 340:28d1f895c6fe 91 {
mbed_official 340:28d1f895c6fe 92 TIM_OC_InitTypeDef sConfig;
mbed_official 340:28d1f895c6fe 93 int channel = 0;
mbed_official 340:28d1f895c6fe 94 int complementary_channel = 0;
mbed_official 340:28d1f895c6fe 95
mbed_official 340:28d1f895c6fe 96 TimHandle.Instance = (TIM_TypeDef *)(obj->pwm);
mbed_official 340:28d1f895c6fe 97
mbed_official 340:28d1f895c6fe 98 if (value < (float)0.0) {
mbed_official 340:28d1f895c6fe 99 value = 0.0;
mbed_official 340:28d1f895c6fe 100 } else if (value > (float)1.0) {
mbed_official 340:28d1f895c6fe 101 value = 1.0;
mbed_official 340:28d1f895c6fe 102 }
mbed_official 340:28d1f895c6fe 103
mbed_official 340:28d1f895c6fe 104 obj->pulse = (uint32_t)((float)obj->period * value);
mbed_official 340:28d1f895c6fe 105
mbed_official 340:28d1f895c6fe 106 // Configure channels
mbed_official 340:28d1f895c6fe 107 sConfig.OCMode = TIM_OCMODE_PWM1;
mbed_official 340:28d1f895c6fe 108 sConfig.Pulse = obj->pulse;
mbed_official 340:28d1f895c6fe 109 sConfig.OCPolarity = TIM_OCPOLARITY_HIGH;
mbed_official 340:28d1f895c6fe 110 sConfig.OCNPolarity = TIM_OCNPOLARITY_HIGH;
mbed_official 340:28d1f895c6fe 111 sConfig.OCFastMode = TIM_OCFAST_DISABLE;
mbed_official 340:28d1f895c6fe 112 sConfig.OCIdleState = TIM_OCIDLESTATE_RESET;
mbed_official 340:28d1f895c6fe 113 sConfig.OCNIdleState = TIM_OCNIDLESTATE_RESET;
mbed_official 340:28d1f895c6fe 114
mbed_official 511:532f83b66a7f 115 complementary_channel = obj->inverted;
mbed_official 511:532f83b66a7f 116 switch (obj->channel) {
mbed_official 340:28d1f895c6fe 117
mbed_official 511:532f83b66a7f 118 case 1:
mbed_official 340:28d1f895c6fe 119 channel = TIM_CHANNEL_1;
mbed_official 340:28d1f895c6fe 120 break;
mbed_official 340:28d1f895c6fe 121
mbed_official 511:532f83b66a7f 122 case 2:
mbed_official 340:28d1f895c6fe 123 channel = TIM_CHANNEL_2;
mbed_official 340:28d1f895c6fe 124 break;
mbed_official 340:28d1f895c6fe 125
mbed_official 511:532f83b66a7f 126 case 3:
mbed_official 340:28d1f895c6fe 127 channel = TIM_CHANNEL_3;
mbed_official 340:28d1f895c6fe 128 break;
mbed_official 340:28d1f895c6fe 129
mbed_official 511:532f83b66a7f 130 case 4:
mbed_official 340:28d1f895c6fe 131 channel = TIM_CHANNEL_4;
mbed_official 340:28d1f895c6fe 132 break;
mbed_official 340:28d1f895c6fe 133
mbed_official 340:28d1f895c6fe 134 default:
mbed_official 340:28d1f895c6fe 135 return;
mbed_official 340:28d1f895c6fe 136 }
mbed_official 340:28d1f895c6fe 137
mbed_official 340:28d1f895c6fe 138 HAL_TIM_PWM_ConfigChannel(&TimHandle, &sConfig, channel);
mbed_official 340:28d1f895c6fe 139 if (complementary_channel) {
mbed_official 340:28d1f895c6fe 140 HAL_TIMEx_PWMN_Start(&TimHandle, channel);
mbed_official 340:28d1f895c6fe 141 } else {
mbed_official 340:28d1f895c6fe 142 HAL_TIM_PWM_Start(&TimHandle, channel);
mbed_official 340:28d1f895c6fe 143 }
mbed_official 340:28d1f895c6fe 144 }
mbed_official 340:28d1f895c6fe 145
mbed_official 340:28d1f895c6fe 146 float pwmout_read(pwmout_t* obj)
mbed_official 340:28d1f895c6fe 147 {
mbed_official 340:28d1f895c6fe 148 float value = 0;
mbed_official 340:28d1f895c6fe 149 if (obj->period > 0) {
mbed_official 340:28d1f895c6fe 150 value = (float)(obj->pulse) / (float)(obj->period);
mbed_official 340:28d1f895c6fe 151 }
mbed_official 340:28d1f895c6fe 152 return ((value > (float)1.0) ? (float)(1.0) : (value));
mbed_official 340:28d1f895c6fe 153 }
mbed_official 340:28d1f895c6fe 154
mbed_official 340:28d1f895c6fe 155 void pwmout_period(pwmout_t* obj, float seconds)
mbed_official 340:28d1f895c6fe 156 {
mbed_official 340:28d1f895c6fe 157 pwmout_period_us(obj, seconds * 1000000.0f);
mbed_official 340:28d1f895c6fe 158 }
mbed_official 340:28d1f895c6fe 159
mbed_official 340:28d1f895c6fe 160 void pwmout_period_ms(pwmout_t* obj, int ms)
mbed_official 340:28d1f895c6fe 161 {
mbed_official 340:28d1f895c6fe 162 pwmout_period_us(obj, ms * 1000);
mbed_official 340:28d1f895c6fe 163 }
mbed_official 340:28d1f895c6fe 164
mbed_official 340:28d1f895c6fe 165 void pwmout_period_us(pwmout_t* obj, int us)
mbed_official 340:28d1f895c6fe 166 {
mbed_official 340:28d1f895c6fe 167 TimHandle.Instance = (TIM_TypeDef *)(obj->pwm);
mbed_official 340:28d1f895c6fe 168
mbed_official 340:28d1f895c6fe 169 float dc = pwmout_read(obj);
mbed_official 340:28d1f895c6fe 170
mbed_official 340:28d1f895c6fe 171 __HAL_TIM_DISABLE(&TimHandle);
mbed_official 340:28d1f895c6fe 172
mbed_official 340:28d1f895c6fe 173 // Update the SystemCoreClock variable
mbed_official 340:28d1f895c6fe 174 SystemCoreClockUpdate();
mbed_official 340:28d1f895c6fe 175
mbed_official 340:28d1f895c6fe 176 TimHandle.Init.Period = us - 1;
mbed_official 340:28d1f895c6fe 177 TimHandle.Init.Prescaler = (uint16_t)(SystemCoreClock / 1000000) - 1; // 1 µs tick
mbed_official 340:28d1f895c6fe 178 TimHandle.Init.ClockDivision = 0;
mbed_official 340:28d1f895c6fe 179 TimHandle.Init.CounterMode = TIM_COUNTERMODE_UP;
mbed_official 340:28d1f895c6fe 180 HAL_TIM_PWM_Init(&TimHandle);
mbed_official 340:28d1f895c6fe 181
mbed_official 340:28d1f895c6fe 182 // Set duty cycle again
mbed_official 340:28d1f895c6fe 183 pwmout_write(obj, dc);
mbed_official 340:28d1f895c6fe 184
mbed_official 340:28d1f895c6fe 185 // Save for future use
mbed_official 340:28d1f895c6fe 186 obj->period = us;
mbed_official 340:28d1f895c6fe 187
mbed_official 340:28d1f895c6fe 188 __HAL_TIM_ENABLE(&TimHandle);
mbed_official 340:28d1f895c6fe 189 }
mbed_official 340:28d1f895c6fe 190
mbed_official 340:28d1f895c6fe 191 void pwmout_pulsewidth(pwmout_t* obj, float seconds)
mbed_official 340:28d1f895c6fe 192 {
mbed_official 340:28d1f895c6fe 193 pwmout_pulsewidth_us(obj, seconds * 1000000.0f);
mbed_official 340:28d1f895c6fe 194 }
mbed_official 340:28d1f895c6fe 195
mbed_official 340:28d1f895c6fe 196 void pwmout_pulsewidth_ms(pwmout_t* obj, int ms)
mbed_official 340:28d1f895c6fe 197 {
mbed_official 340:28d1f895c6fe 198 pwmout_pulsewidth_us(obj, ms * 1000);
mbed_official 340:28d1f895c6fe 199 }
mbed_official 340:28d1f895c6fe 200
mbed_official 340:28d1f895c6fe 201 void pwmout_pulsewidth_us(pwmout_t* obj, int us)
mbed_official 340:28d1f895c6fe 202 {
mbed_official 340:28d1f895c6fe 203 float value = (float)us / (float)obj->period;
mbed_official 340:28d1f895c6fe 204 pwmout_write(obj, value);
mbed_official 340:28d1f895c6fe 205 }
mbed_official 340:28d1f895c6fe 206
mbed_official 340:28d1f895c6fe 207 #endif