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mbed library sources

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Superseded

This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.

Development branch of the mbed library sources. This library is kept in synch with the latest changes from the mbed SDK and it is not guaranteed to work.

If you are looking for a stable and tested release, please import one of the official mbed library releases:

Import librarymbed

The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.

Last commit 20 Feb 2019 by mbed official

targets/hal/TARGET_STM/TARGET_DISCO_F334C8/pwmout_api.c@440:8a0b45cd594f, 2014-12-16 (annotated)

Committer:
mbed_official
Date:
Tue Dec 16 08:15:08 2014 +0000
Revision:
440:8a0b45cd594f
Parent:
381:5460fc57b6e4 
Synchronized with git revision 67fbbf0b635d0c0d93fbe433306c537c2ad206aa



Full URL: https://github.com/mbedmicro/mbed/commit/67fbbf0b635d0c0d93fbe433306c537c2ad206aa/



Targets: nrf51 - updating app_timer.c from Norid'c SDKv7.1.0

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 381:5460fc57b6e4 1 /* mbed Microcontroller Library
mbed_official 381:5460fc57b6e4 2 *******************************************************************************
mbed_official 381:5460fc57b6e4 3 * Copyright (c) 2014, STMicroelectronics
mbed_official 381:5460fc57b6e4 4 * All rights reserved.
mbed_official 381:5460fc57b6e4 5 *
mbed_official 381:5460fc57b6e4 6 * Redistribution and use in source and binary forms, with or without
mbed_official 381:5460fc57b6e4 7 * modification, are permitted provided that the following conditions are met:
mbed_official 381:5460fc57b6e4 8 *
mbed_official 381:5460fc57b6e4 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 381:5460fc57b6e4 10 * this list of conditions and the following disclaimer.
mbed_official 381:5460fc57b6e4 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 381:5460fc57b6e4 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 381:5460fc57b6e4 13 * and/or other materials provided with the distribution.
mbed_official 381:5460fc57b6e4 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 381:5460fc57b6e4 15 * may be used to endorse or promote products derived from this software
mbed_official 381:5460fc57b6e4 16 * without specific prior written permission.
mbed_official 381:5460fc57b6e4 17 *
mbed_official 381:5460fc57b6e4 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 381:5460fc57b6e4 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 381:5460fc57b6e4 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 381:5460fc57b6e4 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 381:5460fc57b6e4 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 381:5460fc57b6e4 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 381:5460fc57b6e4 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 381:5460fc57b6e4 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 381:5460fc57b6e4 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 381:5460fc57b6e4 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 381:5460fc57b6e4 28 *******************************************************************************
mbed_official 381:5460fc57b6e4 29 */
mbed_official 381:5460fc57b6e4 30 #include "pwmout_api.h"
mbed_official 381:5460fc57b6e4 31
mbed_official 381:5460fc57b6e4 32 #if DEVICE_PWMOUT
mbed_official 381:5460fc57b6e4 33
mbed_official 381:5460fc57b6e4 34 #include "cmsis.h"
mbed_official 381:5460fc57b6e4 35 #include "pinmap.h"
mbed_official 381:5460fc57b6e4 36 #include "mbed_error.h"
mbed_official 381:5460fc57b6e4 37
mbed_official 381:5460fc57b6e4 38 // TIM2 cannot be used because already used by the us_ticker
mbed_official 381:5460fc57b6e4 39 static const PinMap PinMap_PWM[] = {
mbed_official 381:5460fc57b6e4 40 // {PA_0, PWM_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2)}, // TIM2_CH1
mbed_official 381:5460fc57b6e4 41 // {PA_1, PWM_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2)}, // TIM2_CH2
mbed_official 381:5460fc57b6e4 42 {PA_1, PWM_15, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF9_TIM15)}, // TIM15_CH1N
mbed_official 381:5460fc57b6e4 43 // {PA_2, PWM_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2)}, // TIM2_CH3
mbed_official 381:5460fc57b6e4 44 {PA_2, PWM_15, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF9_TIM15)}, // TIM15_CH1
mbed_official 381:5460fc57b6e4 45 // {PA_3, PWM_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2)}, // TIM2_CH4
mbed_official 381:5460fc57b6e4 46 {PA_3, PWM_15, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF9_TIM15)}, // TIM15_CH2
mbed_official 381:5460fc57b6e4 47 {PA_4, PWM_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM3)}, // TIM3_CH2
mbed_official 381:5460fc57b6e4 48 // {PA_5, PWM_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2)}, // TIM2_CH1
mbed_official 381:5460fc57b6e4 49 {PA_6, PWM_16, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM16)}, // TIM16_CH1
mbed_official 381:5460fc57b6e4 50 // {PA_6, PWM_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM3)}, // TIM3_CH1
mbed_official 381:5460fc57b6e4 51 {PA_7, PWM_17, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM17)}, // TIM17_CH1 - ARDUINO
mbed_official 381:5460fc57b6e4 52 // {PA_7, PWM_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM3)}, // TIM3_CH2 - ARDUINO
mbed_official 381:5460fc57b6e4 53 // {PA_7, PWM_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_TIM1)}, // TIM1_CH1N - ARDUINO
mbed_official 381:5460fc57b6e4 54 {PA_8, PWM_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_TIM1)}, // TIM1_CH1
mbed_official 381:5460fc57b6e4 55 {PA_9, PWM_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_TIM1)}, // TIM1_CH2
mbed_official 381:5460fc57b6e4 56 // {PA_9, PWM_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_TIM2)}, // TIM2_CH3
mbed_official 381:5460fc57b6e4 57 {PA_10, PWM_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_TIM1)}, // TIM1_CH3
mbed_official 381:5460fc57b6e4 58 // {PA_10, PWM_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_TIM2)}, // TIM2_CH4
mbed_official 381:5460fc57b6e4 59 // {PA_11, PWM_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_TIM1)}, // TIM1_CH1N
mbed_official 381:5460fc57b6e4 60 {PA_11, PWM_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF11_TIM1)}, // TIM1_CH4
mbed_official 381:5460fc57b6e4 61 {PA_12, PWM_16, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM16)}, // TIM16_CH1
mbed_official 381:5460fc57b6e4 62 // {PA_12, PWM_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_TIM1)}, // TIM1_CH2N
mbed_official 381:5460fc57b6e4 63 {PA_13, PWM_16, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM16)}, // TIM16_CH1N
mbed_official 381:5460fc57b6e4 64 // {PA_15, PWM_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2)}, // TIM2_CH1
mbed_official 381:5460fc57b6e4 65
mbed_official 381:5460fc57b6e4 66 {PB_0, PWM_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM3)}, // TIM3_CH3
mbed_official 381:5460fc57b6e4 67 // {PB_0, PWM_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_TIM1)}, // TIM1_CH2N
mbed_official 381:5460fc57b6e4 68 {PB_1, PWM_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM3)}, // TIM3_CH4
mbed_official 381:5460fc57b6e4 69 // {PB_1, PWM_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_TIM1)}, // TIM1_CH3N
mbed_official 381:5460fc57b6e4 70 // {PB_3, PWM_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2)}, // TIM2_CH2 - ARDUINO --> USED BY TIMER
mbed_official 381:5460fc57b6e4 71 {PB_4, PWM_16, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM16)}, // TIM16_CH1 - ARDUINO
mbed_official 381:5460fc57b6e4 72 // {PB_4, PWM_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM3)}, // TIM3_CH1 - ARDUINO
mbed_official 381:5460fc57b6e4 73 // {PB_5, PWM_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM3)}, // TIM3_CH2
mbed_official 381:5460fc57b6e4 74 {PB_5, PWM_17, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_TIM17)}, // TIM17_CH1
mbed_official 381:5460fc57b6e4 75 {PB_6, PWM_16, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM16)}, // TIM16_CH1N - ARDUINO
mbed_official 381:5460fc57b6e4 76 // {PB_7, PWM_17, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM17)}, // TIM17_CH1N
mbed_official 381:5460fc57b6e4 77 {PB_7, PWM_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_TIM3)}, // TIM3_CH4
mbed_official 381:5460fc57b6e4 78 {PB_8, PWM_16, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM16)}, // TIM16_CH1
mbed_official 381:5460fc57b6e4 79 {PB_9, PWM_17, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM17)}, // TIM17_CH1
mbed_official 381:5460fc57b6e4 80 // {PB_10, PWM_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2)}, // TIM2_CH3 - ARDUINO --> USED BY TIMER
mbed_official 381:5460fc57b6e4 81 // {PB_11, PWM_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2)}, // TIM2_CH4
mbed_official 381:5460fc57b6e4 82 {PB_13, PWM_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_TIM1)}, // TIM1_CH1N
mbed_official 381:5460fc57b6e4 83 {PB_14, PWM_15, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM15)}, // TIM15_CH1
mbed_official 381:5460fc57b6e4 84 // {PB_14, PWM_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_TIM1)}, // TIM1_CH2N
mbed_official 381:5460fc57b6e4 85 {PB_15, PWM_15, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM15)}, // TIM15_CH2
mbed_official 381:5460fc57b6e4 86 // {PB_15, PWM_15, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM15)}, // TIM15_CH1N
mbed_official 381:5460fc57b6e4 87 // {PB_15, PWM_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_TIM1)}, // TIM1_CH3N
mbed_official 381:5460fc57b6e4 88
mbed_official 381:5460fc57b6e4 89 {PC_0, PWM_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM1)}, // TIM1_CH1
mbed_official 381:5460fc57b6e4 90 {PC_1, PWM_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM1)}, // TIM1_CH2
mbed_official 381:5460fc57b6e4 91 {PC_2, PWM_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM1)}, // TIM1_CH3
mbed_official 381:5460fc57b6e4 92 {PC_3, PWM_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM1)}, // TIM1_CH4
mbed_official 381:5460fc57b6e4 93 {PC_6, PWM_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM3)}, // TIM3_CH1
mbed_official 381:5460fc57b6e4 94 {PC_7, PWM_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM3)}, // TIM3_CH2 - ARDUINO
mbed_official 381:5460fc57b6e4 95 {PC_8, PWM_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM3)}, // TIM3_CH3
mbed_official 381:5460fc57b6e4 96 {PC_9, PWM_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM3)}, // TIM3_CH4
mbed_official 381:5460fc57b6e4 97 {PC_13, PWM_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_TIM1)}, // TIM1_CH1N
mbed_official 381:5460fc57b6e4 98
mbed_official 381:5460fc57b6e4 99 {PF_0, PWM_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_TIM1)}, // TIM1_CH3N
mbed_official 381:5460fc57b6e4 100 {NC, NC, 0}
mbed_official 381:5460fc57b6e4 101 };
mbed_official 381:5460fc57b6e4 102
mbed_official 381:5460fc57b6e4 103 static TIM_HandleTypeDef TimHandle;
mbed_official 381:5460fc57b6e4 104
mbed_official 381:5460fc57b6e4 105 void pwmout_init(pwmout_t* obj, PinName pin)
mbed_official 381:5460fc57b6e4 106 {
mbed_official 381:5460fc57b6e4 107 // Get the peripheral name from the pin and assign it to the object
mbed_official 381:5460fc57b6e4 108 obj->pwm = (PWMName)pinmap_peripheral(pin, PinMap_PWM);
mbed_official 381:5460fc57b6e4 109
mbed_official 381:5460fc57b6e4 110 if (obj->pwm == (PWMName)NC) {
mbed_official 381:5460fc57b6e4 111 error("PWM error: pinout mapping failed.");
mbed_official 381:5460fc57b6e4 112 }
mbed_official 381:5460fc57b6e4 113
mbed_official 381:5460fc57b6e4 114 // Enable TIM clock
mbed_official 381:5460fc57b6e4 115 if (obj->pwm == PWM_1) __TIM1_CLK_ENABLE();
mbed_official 381:5460fc57b6e4 116 if (obj->pwm == PWM_2) __TIM2_CLK_ENABLE();
mbed_official 381:5460fc57b6e4 117 if (obj->pwm == PWM_3) __TIM3_CLK_ENABLE();
mbed_official 381:5460fc57b6e4 118 if (obj->pwm == PWM_15) __TIM15_CLK_ENABLE();
mbed_official 381:5460fc57b6e4 119 if (obj->pwm == PWM_16) __TIM16_CLK_ENABLE();
mbed_official 381:5460fc57b6e4 120 if (obj->pwm == PWM_17) __TIM17_CLK_ENABLE();
mbed_official 381:5460fc57b6e4 121
mbed_official 381:5460fc57b6e4 122 // Configure GPIO
mbed_official 381:5460fc57b6e4 123 pinmap_pinout(pin, PinMap_PWM);
mbed_official 381:5460fc57b6e4 124
mbed_official 381:5460fc57b6e4 125 obj->pin = pin;
mbed_official 381:5460fc57b6e4 126 obj->period = 0;
mbed_official 381:5460fc57b6e4 127 obj->pulse = 0;
mbed_official 381:5460fc57b6e4 128
mbed_official 381:5460fc57b6e4 129 pwmout_period_us(obj, 20000); // 20 ms per default
mbed_official 381:5460fc57b6e4 130 }
mbed_official 381:5460fc57b6e4 131
mbed_official 381:5460fc57b6e4 132 void pwmout_free(pwmout_t* obj)
mbed_official 381:5460fc57b6e4 133 {
mbed_official 381:5460fc57b6e4 134 // Configure GPIO
mbed_official 381:5460fc57b6e4 135 pin_function(obj->pin, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
mbed_official 381:5460fc57b6e4 136 }
mbed_official 381:5460fc57b6e4 137
mbed_official 381:5460fc57b6e4 138 void pwmout_write(pwmout_t* obj, float value)
mbed_official 381:5460fc57b6e4 139 {
mbed_official 381:5460fc57b6e4 140 TIM_OC_InitTypeDef sConfig;
mbed_official 381:5460fc57b6e4 141 int channel = 0;
mbed_official 381:5460fc57b6e4 142 int complementary_channel = 0;
mbed_official 381:5460fc57b6e4 143
mbed_official 381:5460fc57b6e4 144 TimHandle.Instance = (TIM_TypeDef *)(obj->pwm);
mbed_official 381:5460fc57b6e4 145
mbed_official 381:5460fc57b6e4 146 if (value < (float)0.0) {
mbed_official 381:5460fc57b6e4 147 value = 0.0;
mbed_official 381:5460fc57b6e4 148 } else if (value > (float)1.0) {
mbed_official 381:5460fc57b6e4 149 value = 1.0;
mbed_official 381:5460fc57b6e4 150 }
mbed_official 381:5460fc57b6e4 151
mbed_official 381:5460fc57b6e4 152 obj->pulse = (uint32_t)((float)obj->period * value);
mbed_official 381:5460fc57b6e4 153
mbed_official 381:5460fc57b6e4 154 // Configure channels
mbed_official 381:5460fc57b6e4 155 sConfig.OCMode = TIM_OCMODE_PWM1;
mbed_official 381:5460fc57b6e4 156 sConfig.Pulse = obj->pulse;
mbed_official 381:5460fc57b6e4 157 sConfig.OCPolarity = TIM_OCPOLARITY_HIGH;
mbed_official 381:5460fc57b6e4 158 sConfig.OCNPolarity = TIM_OCNPOLARITY_HIGH;
mbed_official 381:5460fc57b6e4 159 sConfig.OCFastMode = TIM_OCFAST_DISABLE;
mbed_official 381:5460fc57b6e4 160 sConfig.OCIdleState = TIM_OCIDLESTATE_RESET;
mbed_official 381:5460fc57b6e4 161 sConfig.OCNIdleState = TIM_OCNIDLESTATE_RESET;
mbed_official 381:5460fc57b6e4 162
mbed_official 381:5460fc57b6e4 163 switch (obj->pin) {
mbed_official 381:5460fc57b6e4 164
mbed_official 381:5460fc57b6e4 165 // Channels 1
mbed_official 381:5460fc57b6e4 166 case PA_2:
mbed_official 381:5460fc57b6e4 167 case PA_6:
mbed_official 381:5460fc57b6e4 168 case PA_7:
mbed_official 381:5460fc57b6e4 169 case PA_8:
mbed_official 381:5460fc57b6e4 170 case PA_12:
mbed_official 381:5460fc57b6e4 171 case PB_4:
mbed_official 381:5460fc57b6e4 172 case PB_5:
mbed_official 381:5460fc57b6e4 173 case PB_8:
mbed_official 381:5460fc57b6e4 174 case PB_9:
mbed_official 381:5460fc57b6e4 175 case PB_14:
mbed_official 381:5460fc57b6e4 176 case PC_0:
mbed_official 381:5460fc57b6e4 177 case PC_6:
mbed_official 381:5460fc57b6e4 178 channel = TIM_CHANNEL_1;
mbed_official 381:5460fc57b6e4 179 break;
mbed_official 381:5460fc57b6e4 180
mbed_official 381:5460fc57b6e4 181 // Channels 1N
mbed_official 381:5460fc57b6e4 182 case PA_1:
mbed_official 381:5460fc57b6e4 183 case PA_13:
mbed_official 381:5460fc57b6e4 184 case PB_6:
mbed_official 381:5460fc57b6e4 185 case PB_13:
mbed_official 381:5460fc57b6e4 186 case PC_13:
mbed_official 381:5460fc57b6e4 187 channel = TIM_CHANNEL_1;
mbed_official 381:5460fc57b6e4 188 complementary_channel = 1;
mbed_official 381:5460fc57b6e4 189 break;
mbed_official 381:5460fc57b6e4 190
mbed_official 381:5460fc57b6e4 191 // Channels 2
mbed_official 381:5460fc57b6e4 192 case PA_3:
mbed_official 381:5460fc57b6e4 193 case PA_4:
mbed_official 381:5460fc57b6e4 194 case PA_9:
mbed_official 381:5460fc57b6e4 195 case PB_15:
mbed_official 381:5460fc57b6e4 196 case PC_1:
mbed_official 381:5460fc57b6e4 197 case PC_7:
mbed_official 381:5460fc57b6e4 198 channel = TIM_CHANNEL_2;
mbed_official 381:5460fc57b6e4 199 break;
mbed_official 381:5460fc57b6e4 200
mbed_official 381:5460fc57b6e4 201 // Channels 3
mbed_official 381:5460fc57b6e4 202 case PA_10:
mbed_official 381:5460fc57b6e4 203 case PB_0:
mbed_official 381:5460fc57b6e4 204 case PC_2:
mbed_official 381:5460fc57b6e4 205 case PC_8:
mbed_official 381:5460fc57b6e4 206 channel = TIM_CHANNEL_3;
mbed_official 381:5460fc57b6e4 207 break;
mbed_official 381:5460fc57b6e4 208
mbed_official 381:5460fc57b6e4 209 // Channels 3N
mbed_official 381:5460fc57b6e4 210 case PF_0:
mbed_official 381:5460fc57b6e4 211 channel = TIM_CHANNEL_3;
mbed_official 381:5460fc57b6e4 212 complementary_channel = 1;
mbed_official 381:5460fc57b6e4 213 break;
mbed_official 381:5460fc57b6e4 214
mbed_official 381:5460fc57b6e4 215 // Channels 4
mbed_official 381:5460fc57b6e4 216 case PA_11:
mbed_official 381:5460fc57b6e4 217 case PB_1:
mbed_official 381:5460fc57b6e4 218 case PB_7:
mbed_official 381:5460fc57b6e4 219 case PC_3:
mbed_official 381:5460fc57b6e4 220 case PC_9:
mbed_official 381:5460fc57b6e4 221 channel = TIM_CHANNEL_4;
mbed_official 381:5460fc57b6e4 222 break;
mbed_official 381:5460fc57b6e4 223
mbed_official 381:5460fc57b6e4 224 default:
mbed_official 381:5460fc57b6e4 225 return;
mbed_official 381:5460fc57b6e4 226 }
mbed_official 381:5460fc57b6e4 227
mbed_official 381:5460fc57b6e4 228 HAL_TIM_PWM_ConfigChannel(&TimHandle, &sConfig, channel);
mbed_official 381:5460fc57b6e4 229
mbed_official 381:5460fc57b6e4 230 if (complementary_channel) {
mbed_official 381:5460fc57b6e4 231 HAL_TIMEx_PWMN_Start(&TimHandle, channel);
mbed_official 381:5460fc57b6e4 232 } else {
mbed_official 381:5460fc57b6e4 233 HAL_TIM_PWM_Start(&TimHandle, channel);
mbed_official 381:5460fc57b6e4 234 }
mbed_official 381:5460fc57b6e4 235 }
mbed_official 381:5460fc57b6e4 236
mbed_official 381:5460fc57b6e4 237 float pwmout_read(pwmout_t* obj)
mbed_official 381:5460fc57b6e4 238 {
mbed_official 381:5460fc57b6e4 239 float value = 0;
mbed_official 381:5460fc57b6e4 240 if (obj->period > 0) {
mbed_official 381:5460fc57b6e4 241 value = (float)(obj->pulse) / (float)(obj->period);
mbed_official 381:5460fc57b6e4 242 }
mbed_official 381:5460fc57b6e4 243 return ((value > (float)1.0) ? (float)(1.0) : (value));
mbed_official 381:5460fc57b6e4 244 }
mbed_official 381:5460fc57b6e4 245
mbed_official 381:5460fc57b6e4 246 void pwmout_period(pwmout_t* obj, float seconds)
mbed_official 381:5460fc57b6e4 247 {
mbed_official 381:5460fc57b6e4 248 pwmout_period_us(obj, seconds * 1000000.0f);
mbed_official 381:5460fc57b6e4 249 }
mbed_official 381:5460fc57b6e4 250
mbed_official 381:5460fc57b6e4 251 void pwmout_period_ms(pwmout_t* obj, int ms)
mbed_official 381:5460fc57b6e4 252 {
mbed_official 381:5460fc57b6e4 253 pwmout_period_us(obj, ms * 1000);
mbed_official 381:5460fc57b6e4 254 }
mbed_official 381:5460fc57b6e4 255
mbed_official 381:5460fc57b6e4 256 void pwmout_period_us(pwmout_t* obj, int us)
mbed_official 381:5460fc57b6e4 257 {
mbed_official 381:5460fc57b6e4 258 TimHandle.Instance = (TIM_TypeDef *)(obj->pwm);
mbed_official 381:5460fc57b6e4 259
mbed_official 381:5460fc57b6e4 260 float dc = pwmout_read(obj);
mbed_official 381:5460fc57b6e4 261
mbed_official 381:5460fc57b6e4 262 __HAL_TIM_DISABLE(&TimHandle);
mbed_official 381:5460fc57b6e4 263
mbed_official 381:5460fc57b6e4 264 // Update the SystemCoreClock variable
mbed_official 381:5460fc57b6e4 265 SystemCoreClockUpdate();
mbed_official 381:5460fc57b6e4 266
mbed_official 381:5460fc57b6e4 267 TimHandle.Init.Period = us - 1;
mbed_official 381:5460fc57b6e4 268 TimHandle.Init.Prescaler = (uint16_t)(SystemCoreClock / 1000000) - 1; // 1 µs tick
mbed_official 381:5460fc57b6e4 269 TimHandle.Init.ClockDivision = 0;
mbed_official 381:5460fc57b6e4 270 TimHandle.Init.CounterMode = TIM_COUNTERMODE_UP;
mbed_official 381:5460fc57b6e4 271 HAL_TIM_PWM_Init(&TimHandle);
mbed_official 381:5460fc57b6e4 272
mbed_official 381:5460fc57b6e4 273 // Set duty cycle again
mbed_official 381:5460fc57b6e4 274 pwmout_write(obj, dc);
mbed_official 381:5460fc57b6e4 275
mbed_official 381:5460fc57b6e4 276 // Save for future use
mbed_official 381:5460fc57b6e4 277 obj->period = us;
mbed_official 381:5460fc57b6e4 278
mbed_official 381:5460fc57b6e4 279 __HAL_TIM_ENABLE(&TimHandle);
mbed_official 381:5460fc57b6e4 280 }
mbed_official 381:5460fc57b6e4 281
mbed_official 381:5460fc57b6e4 282 void pwmout_pulsewidth(pwmout_t* obj, float seconds)
mbed_official 381:5460fc57b6e4 283 {
mbed_official 381:5460fc57b6e4 284 pwmout_pulsewidth_us(obj, seconds * 1000000.0f);
mbed_official 381:5460fc57b6e4 285 }
mbed_official 381:5460fc57b6e4 286
mbed_official 381:5460fc57b6e4 287 void pwmout_pulsewidth_ms(pwmout_t* obj, int ms)
mbed_official 381:5460fc57b6e4 288 {
mbed_official 381:5460fc57b6e4 289 pwmout_pulsewidth_us(obj, ms * 1000);
mbed_official 381:5460fc57b6e4 290 }
mbed_official 381:5460fc57b6e4 291
mbed_official 381:5460fc57b6e4 292 void pwmout_pulsewidth_us(pwmout_t* obj, int us)
mbed_official 381:5460fc57b6e4 293 {
mbed_official 381:5460fc57b6e4 294 float value = (float)us / (float)obj->period;
mbed_official 381:5460fc57b6e4 295 pwmout_write(obj, value);
mbed_official 381:5460fc57b6e4 296 }
mbed_official 381:5460fc57b6e4 297
mbed_official 381:5460fc57b6e4 298 #endif