Ken Todotani / mbed-src

mbed library sources

Fork of mbed-src by mbed official

targets/hal/TARGET_STM/TARGET_NUCLEO_F302R8/pwmout_api.c@250:a49055e7a707, 2014-07-08 (annotated)

Committer:
mbed_official
Date:
Tue Jul 08 11:15:08 2014 +0100
Revision:
250:a49055e7a707
Parent:
216:577900467c9e
Child:
251:de9a1e4ffd79
Synchronized with git revision 3197042b65f8d28e856e1a7812d45e2fbe80e3f1



Full URL: https://github.com/mbedmicro/mbed/commit/3197042b65f8d28e856e1a7812d45e2fbe80e3f1/



error.h -> mbed_error.h

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 125:23cc3068a9e4 1 /* mbed Microcontroller Library
mbed_official 125:23cc3068a9e4 2 *******************************************************************************
mbed_official 125:23cc3068a9e4 3 * Copyright (c) 2014, STMicroelectronics
mbed_official 125:23cc3068a9e4 4 * All rights reserved.
mbed_official 125:23cc3068a9e4 5 *
mbed_official 125:23cc3068a9e4 6 * Redistribution and use in source and binary forms, with or without
mbed_official 125:23cc3068a9e4 7 * modification, are permitted provided that the following conditions are met:
mbed_official 125:23cc3068a9e4 8 *
mbed_official 125:23cc3068a9e4 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 125:23cc3068a9e4 10 * this list of conditions and the following disclaimer.
mbed_official 125:23cc3068a9e4 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 125:23cc3068a9e4 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 125:23cc3068a9e4 13 * and/or other materials provided with the distribution.
mbed_official 125:23cc3068a9e4 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 125:23cc3068a9e4 15 * may be used to endorse or promote products derived from this software
mbed_official 125:23cc3068a9e4 16 * without specific prior written permission.
mbed_official 125:23cc3068a9e4 17 *
mbed_official 125:23cc3068a9e4 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 125:23cc3068a9e4 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 125:23cc3068a9e4 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 125:23cc3068a9e4 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 125:23cc3068a9e4 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 125:23cc3068a9e4 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 125:23cc3068a9e4 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 125:23cc3068a9e4 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 125:23cc3068a9e4 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 125:23cc3068a9e4 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 125:23cc3068a9e4 28 *******************************************************************************
mbed_official 125:23cc3068a9e4 29 */
mbed_official 125:23cc3068a9e4 30 #include "pwmout_api.h"
mbed_official 125:23cc3068a9e4 31
mbed_official 162:937d965048d3 32 #if DEVICE_PWMOUT
mbed_official 162:937d965048d3 33
mbed_official 125:23cc3068a9e4 34 #include "cmsis.h"
mbed_official 125:23cc3068a9e4 35 #include "pinmap.h"
mbed_official 250:a49055e7a707 36 #include "mbed_error.h"
mbed_official 125:23cc3068a9e4 37
mbed_official 125:23cc3068a9e4 38 // TIM2 cannot be used because already used by the us_ticker
mbed_official 125:23cc3068a9e4 39 static const PinMap PinMap_PWM[] = {
mbed_official 135:067cc8ba23da 40 // {PA_0, PWM_2, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM2_CH1
mbed_official 135:067cc8ba23da 41 // {PA_1, PWM_2, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM2_CH2
mbed_official 125:23cc3068a9e4 42 {PA_1, PWM_15, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_9)}, // TIM15_CH1N
mbed_official 125:23cc3068a9e4 43 {PA_2, PWM_15, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_9)}, // TIM15_CH1
mbed_official 125:23cc3068a9e4 44 {PA_3, PWM_15, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_9)}, // TIM15_CH2
mbed_official 135:067cc8ba23da 45 // {PA_5, PWM_2, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM2_CH1
mbed_official 125:23cc3068a9e4 46 {PA_6, PWM_16, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM16_CH1
mbed_official 125:23cc3068a9e4 47 {PA_7, PWM_17, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM17_CH1
mbed_official 135:067cc8ba23da 48 // {PA_7, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_6)}, // TIM1_CH1N
mbed_official 125:23cc3068a9e4 49 {PA_8, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_6)}, // TIM1_CH1
mbed_official 125:23cc3068a9e4 50 {PA_9, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_6)}, // TIM1_CH2
mbed_official 135:067cc8ba23da 51 // {PA_9, PWM_2, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_10)}, // TIM2_CH3
mbed_official 125:23cc3068a9e4 52 {PA_10, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_6)}, // TIM1_CH3
mbed_official 135:067cc8ba23da 53 // {PA_10, PWM_2, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_10)}, // TIM2_CH4
mbed_official 125:23cc3068a9e4 54 {PA_11, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_11)}, // TIM1_CH4
mbed_official 135:067cc8ba23da 55 // {PA_11, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_6)}, // TIM1_CH1N
mbed_official 125:23cc3068a9e4 56 {PA_12, PWM_16, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM16_CH1
mbed_official 135:067cc8ba23da 57 // {PA_12, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_6)}, // TIM1_CH2N
mbed_official 125:23cc3068a9e4 58 {PA_13, PWM_16, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM16_CH1N
mbed_official 135:067cc8ba23da 59 // {PA_15, PWM_2, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM2_CH1
mbed_official 135:067cc8ba23da 60
mbed_official 125:23cc3068a9e4 61 {PB_0, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_6)}, // TIM1_CH2N
mbed_official 125:23cc3068a9e4 62 {PB_1, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_6)}, // TIM1_CH3N
mbed_official 135:067cc8ba23da 63 // {PB_3, PWM_2, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM2_CH2
mbed_official 125:23cc3068a9e4 64 {PB_4, PWM_16, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM16_CH1
mbed_official 125:23cc3068a9e4 65 {PB_5, PWM_17, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_10)}, // TIM17_CH1
mbed_official 125:23cc3068a9e4 66 {PB_6, PWM_16, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM16_CH1N
mbed_official 125:23cc3068a9e4 67 {PB_7, PWM_17, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM17_CH1N
mbed_official 125:23cc3068a9e4 68 {PB_8, PWM_16, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM16_CH1
mbed_official 125:23cc3068a9e4 69 {PB_9, PWM_17, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM17_CH1
mbed_official 135:067cc8ba23da 70 // {PB_10, PWM_2, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM2_CH3
mbed_official 135:067cc8ba23da 71 // {PB_11, PWM_2, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM2_CH4
mbed_official 125:23cc3068a9e4 72 {PB_13, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_6)}, // TIM1_CH1N
mbed_official 125:23cc3068a9e4 73 {PB_14, PWM_15, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM15_CH1
mbed_official 135:067cc8ba23da 74 // {PB_14, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_6)}, // TIM1_CH2N
mbed_official 125:23cc3068a9e4 75 {PB_15, PWM_15, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM15_CH2
mbed_official 135:067cc8ba23da 76 // {PB_15, PWM_15, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_2)}, // TIM15_CH1N
mbed_official 135:067cc8ba23da 77 // {PB_15, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_4)}, // TIM1_CH3N
mbed_official 135:067cc8ba23da 78
mbed_official 125:23cc3068a9e4 79 {PC_0, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_2)}, // TIM1_CH1
mbed_official 125:23cc3068a9e4 80 {PC_1, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_2)}, // TIM1_CH2
mbed_official 125:23cc3068a9e4 81 {PC_2, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_2)}, // TIM1_CH3
mbed_official 125:23cc3068a9e4 82 {PC_3, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_2)}, // TIM1_CH4
mbed_official 125:23cc3068a9e4 83 {PC_13, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_4)}, // TIM1_CH1N
mbed_official 135:067cc8ba23da 84
mbed_official 125:23cc3068a9e4 85 {PF_0, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_6)}, // TIM1_CH3N
mbed_official 135:067cc8ba23da 86
mbed_official 125:23cc3068a9e4 87 {NC, NC, 0}
mbed_official 125:23cc3068a9e4 88 };
mbed_official 125:23cc3068a9e4 89
mbed_official 135:067cc8ba23da 90 void pwmout_init(pwmout_t* obj, PinName pin) {
mbed_official 125:23cc3068a9e4 91 // Get the peripheral name from the pin and assign it to the object
mbed_official 125:23cc3068a9e4 92 obj->pwm = (PWMName)pinmap_peripheral(pin, PinMap_PWM);
mbed_official 135:067cc8ba23da 93
mbed_official 125:23cc3068a9e4 94 if (obj->pwm == (PWMName)NC) {
mbed_official 125:23cc3068a9e4 95 error("PWM pinout mapping failed");
mbed_official 125:23cc3068a9e4 96 }
mbed_official 135:067cc8ba23da 97
mbed_official 125:23cc3068a9e4 98 // Enable TIM clock
mbed_official 125:23cc3068a9e4 99 if (obj->pwm == PWM_1) RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE);
mbed_official 125:23cc3068a9e4 100 if (obj->pwm == PWM_15) RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM15, ENABLE);
mbed_official 125:23cc3068a9e4 101 if (obj->pwm == PWM_16) RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM16, ENABLE);
mbed_official 125:23cc3068a9e4 102 if (obj->pwm == PWM_17) RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM17, ENABLE);
mbed_official 135:067cc8ba23da 103
mbed_official 125:23cc3068a9e4 104 // Configure GPIO
mbed_official 125:23cc3068a9e4 105 pinmap_pinout(pin, PinMap_PWM);
mbed_official 135:067cc8ba23da 106
mbed_official 125:23cc3068a9e4 107 obj->pin = pin;
mbed_official 125:23cc3068a9e4 108 obj->period = 0;
mbed_official 125:23cc3068a9e4 109 obj->pulse = 0;
mbed_official 135:067cc8ba23da 110
mbed_official 125:23cc3068a9e4 111 pwmout_period_us(obj, 20000); // 20 ms per default
mbed_official 125:23cc3068a9e4 112 }
mbed_official 125:23cc3068a9e4 113
mbed_official 125:23cc3068a9e4 114 void pwmout_free(pwmout_t* obj) {
mbed_official 216:577900467c9e 115 // Configure GPIO
mbed_official 216:577900467c9e 116 pin_function(obj->pin, STM_PIN_DATA(GPIO_Mode_IN, 0, GPIO_PuPd_NOPULL, 0xFF));
mbed_official 125:23cc3068a9e4 117 }
mbed_official 125:23cc3068a9e4 118
mbed_official 125:23cc3068a9e4 119 void pwmout_write(pwmout_t* obj, float value) {
mbed_official 125:23cc3068a9e4 120 TIM_TypeDef *tim = (TIM_TypeDef *)(obj->pwm);
mbed_official 125:23cc3068a9e4 121 TIM_OCInitTypeDef TIM_OCInitStructure;
mbed_official 135:067cc8ba23da 122
mbed_official 125:23cc3068a9e4 123 if (value < (float)0.0) {
mbed_official 125:23cc3068a9e4 124 value = (float)0.0;
mbed_official 125:23cc3068a9e4 125 } else if (value > (float)1.0) {
mbed_official 125:23cc3068a9e4 126 value = (float)1.0;
mbed_official 125:23cc3068a9e4 127 }
mbed_official 135:067cc8ba23da 128
mbed_official 125:23cc3068a9e4 129 obj->pulse = (uint32_t)((float)obj->period * value);
mbed_official 125:23cc3068a9e4 130
mbed_official 135:067cc8ba23da 131 // Configure channels
mbed_official 125:23cc3068a9e4 132 TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
mbed_official 125:23cc3068a9e4 133 TIM_OCInitStructure.TIM_Pulse = obj->pulse;
mbed_official 125:23cc3068a9e4 134 TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
mbed_official 125:23cc3068a9e4 135 TIM_OCInitStructure.TIM_OCNPolarity = TIM_OCPolarity_High;
mbed_official 125:23cc3068a9e4 136 TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Reset;
mbed_official 125:23cc3068a9e4 137 TIM_OCInitStructure.TIM_OCNIdleState = TIM_OCNIdleState_Reset;
mbed_official 135:067cc8ba23da 138
mbed_official 125:23cc3068a9e4 139 switch (obj->pin) {
mbed_official 125:23cc3068a9e4 140 // Channels 1
mbed_official 135:067cc8ba23da 141 // case PA_0:
mbed_official 125:23cc3068a9e4 142 case PA_2:
mbed_official 135:067cc8ba23da 143 // case PA_5:
mbed_official 125:23cc3068a9e4 144 case PA_6:
mbed_official 125:23cc3068a9e4 145 case PA_7:
mbed_official 125:23cc3068a9e4 146 case PA_8:
mbed_official 125:23cc3068a9e4 147 case PA_12:
mbed_official 135:067cc8ba23da 148 // case PA_15:
mbed_official 125:23cc3068a9e4 149 case PB_4:
mbed_official 125:23cc3068a9e4 150 case PB_5:
mbed_official 125:23cc3068a9e4 151 case PB_8:
mbed_official 125:23cc3068a9e4 152 case PB_9:
mbed_official 125:23cc3068a9e4 153 case PB_14:
mbed_official 125:23cc3068a9e4 154 case PC_0:
mbed_official 125:23cc3068a9e4 155 TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
mbed_official 125:23cc3068a9e4 156 TIM_OC1PreloadConfig(tim, TIM_OCPreload_Enable);
mbed_official 125:23cc3068a9e4 157 TIM_OC1Init(tim, &TIM_OCInitStructure);
mbed_official 125:23cc3068a9e4 158 break;
mbed_official 125:23cc3068a9e4 159 // Channels 1N
mbed_official 125:23cc3068a9e4 160 case PA_1:
mbed_official 135:067cc8ba23da 161 // case PA_7:
mbed_official 135:067cc8ba23da 162 // case PA_11:
mbed_official 125:23cc3068a9e4 163 case PA_13:
mbed_official 125:23cc3068a9e4 164 case PB_6:
mbed_official 125:23cc3068a9e4 165 case PB_7:
mbed_official 125:23cc3068a9e4 166 case PB_13:
mbed_official 135:067cc8ba23da 167 // case PB_15:
mbed_official 125:23cc3068a9e4 168 case PC_13:
mbed_official 125:23cc3068a9e4 169 TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Enable;
mbed_official 125:23cc3068a9e4 170 TIM_OC1PreloadConfig(tim, TIM_OCPreload_Enable);
mbed_official 125:23cc3068a9e4 171 TIM_OC1Init(tim, &TIM_OCInitStructure);
mbed_official 125:23cc3068a9e4 172 break;
mbed_official 125:23cc3068a9e4 173 // Channels 2
mbed_official 135:067cc8ba23da 174 // case PA_1:
mbed_official 125:23cc3068a9e4 175 case PA_3:
mbed_official 125:23cc3068a9e4 176 case PA_9:
mbed_official 135:067cc8ba23da 177 // case PB_3:
mbed_official 125:23cc3068a9e4 178 case PB_15:
mbed_official 125:23cc3068a9e4 179 case PC_1:
mbed_official 125:23cc3068a9e4 180 TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
mbed_official 125:23cc3068a9e4 181 TIM_OC2PreloadConfig(tim, TIM_OCPreload_Enable);
mbed_official 125:23cc3068a9e4 182 TIM_OC2Init(tim, &TIM_OCInitStructure);
mbed_official 125:23cc3068a9e4 183 break;
mbed_official 125:23cc3068a9e4 184 // Channels 2N
mbed_official 135:067cc8ba23da 185 // case PA_12:
mbed_official 125:23cc3068a9e4 186 case PB_0:
mbed_official 135:067cc8ba23da 187 // case PB_14:
mbed_official 125:23cc3068a9e4 188 TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Enable;
mbed_official 125:23cc3068a9e4 189 TIM_OC2PreloadConfig(tim, TIM_OCPreload_Enable);
mbed_official 125:23cc3068a9e4 190 TIM_OC2Init(tim, &TIM_OCInitStructure);
mbed_official 125:23cc3068a9e4 191 break;
mbed_official 125:23cc3068a9e4 192 // Channels 3
mbed_official 135:067cc8ba23da 193 // case PA_9:
mbed_official 125:23cc3068a9e4 194 case PA_10:
mbed_official 135:067cc8ba23da 195 // case PB_10:
mbed_official 125:23cc3068a9e4 196 case PC_2:
mbed_official 125:23cc3068a9e4 197 TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
mbed_official 125:23cc3068a9e4 198 TIM_OC3PreloadConfig(tim, TIM_OCPreload_Enable);
mbed_official 125:23cc3068a9e4 199 TIM_OC3Init(tim, &TIM_OCInitStructure);
mbed_official 125:23cc3068a9e4 200 break;
mbed_official 125:23cc3068a9e4 201 // Channels 3N
mbed_official 125:23cc3068a9e4 202 case PB_1:
mbed_official 125:23cc3068a9e4 203 case PF_0:
mbed_official 135:067cc8ba23da 204 // case PB_15:
mbed_official 125:23cc3068a9e4 205 TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Enable;
mbed_official 125:23cc3068a9e4 206 TIM_OC3PreloadConfig(tim, TIM_OCPreload_Enable);
mbed_official 125:23cc3068a9e4 207 TIM_OC3Init(tim, &TIM_OCInitStructure);
mbed_official 125:23cc3068a9e4 208 break;
mbed_official 125:23cc3068a9e4 209 // Channels 4
mbed_official 135:067cc8ba23da 210 // case PA_10:
mbed_official 125:23cc3068a9e4 211 case PA_11:
mbed_official 135:067cc8ba23da 212 // case PB_11:
mbed_official 125:23cc3068a9e4 213 case PC_3:
mbed_official 125:23cc3068a9e4 214 TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
mbed_official 125:23cc3068a9e4 215 TIM_OC4PreloadConfig(tim, TIM_OCPreload_Enable);
mbed_official 125:23cc3068a9e4 216 TIM_OC4Init(tim, &TIM_OCInitStructure);
mbed_official 125:23cc3068a9e4 217 break;
mbed_official 125:23cc3068a9e4 218 default:
mbed_official 125:23cc3068a9e4 219 return;
mbed_official 135:067cc8ba23da 220 }
mbed_official 125:23cc3068a9e4 221 }
mbed_official 125:23cc3068a9e4 222
mbed_official 125:23cc3068a9e4 223 float pwmout_read(pwmout_t* obj) {
mbed_official 125:23cc3068a9e4 224 float value = 0;
mbed_official 125:23cc3068a9e4 225 if (obj->period > 0) {
mbed_official 125:23cc3068a9e4 226 value = (float)(obj->pulse) / (float)(obj->period);
mbed_official 125:23cc3068a9e4 227 }
mbed_official 125:23cc3068a9e4 228 return ((value > (float)1.0) ? ((float)1.0) : (value));
mbed_official 125:23cc3068a9e4 229 }
mbed_official 125:23cc3068a9e4 230
mbed_official 125:23cc3068a9e4 231 void pwmout_period(pwmout_t* obj, float seconds) {
mbed_official 125:23cc3068a9e4 232 pwmout_period_us(obj, seconds * 1000000.0f);
mbed_official 125:23cc3068a9e4 233 }
mbed_official 125:23cc3068a9e4 234
mbed_official 125:23cc3068a9e4 235 void pwmout_period_ms(pwmout_t* obj, int ms) {
mbed_official 125:23cc3068a9e4 236 pwmout_period_us(obj, ms * 1000);
mbed_official 125:23cc3068a9e4 237 }
mbed_official 125:23cc3068a9e4 238
mbed_official 125:23cc3068a9e4 239 void pwmout_period_us(pwmout_t* obj, int us) {
mbed_official 125:23cc3068a9e4 240 TIM_TypeDef *tim = (TIM_TypeDef *)(obj->pwm);
mbed_official 125:23cc3068a9e4 241 TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
mbed_official 125:23cc3068a9e4 242 float dc = pwmout_read(obj);
mbed_official 125:23cc3068a9e4 243
mbed_official 135:067cc8ba23da 244 TIM_Cmd(tim, DISABLE);
mbed_official 135:067cc8ba23da 245
mbed_official 125:23cc3068a9e4 246 obj->period = us;
mbed_official 135:067cc8ba23da 247
mbed_official 125:23cc3068a9e4 248 TIM_TimeBaseStructInit(&TIM_TimeBaseStructure);
mbed_official 125:23cc3068a9e4 249 TIM_TimeBaseStructure.TIM_Period = obj->period - 1;
mbed_official 125:23cc3068a9e4 250 TIM_TimeBaseStructure.TIM_Prescaler = (uint16_t)(SystemCoreClock / 1000000) - 1; // 1 µs tick
mbed_official 125:23cc3068a9e4 251 TIM_TimeBaseStructure.TIM_ClockDivision = 0;
mbed_official 125:23cc3068a9e4 252 TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
mbed_official 125:23cc3068a9e4 253 TIM_TimeBaseInit(tim, &TIM_TimeBaseStructure);
mbed_official 125:23cc3068a9e4 254
mbed_official 125:23cc3068a9e4 255 // Set duty cycle again
mbed_official 125:23cc3068a9e4 256 pwmout_write(obj, dc);
mbed_official 135:067cc8ba23da 257
mbed_official 125:23cc3068a9e4 258 TIM_ARRPreloadConfig(tim, ENABLE);
mbed_official 135:067cc8ba23da 259
mbed_official 125:23cc3068a9e4 260 // Warning: Main Output must be enabled on TIM1, TIM8, TIM5, TIM6 and TIM17
mbed_official 125:23cc3068a9e4 261 if ((obj->pwm == PWM_1) || (obj->pwm == PWM_15) || (obj->pwm == PWM_16) || (obj->pwm == PWM_17)) {
mbed_official 125:23cc3068a9e4 262 TIM_CtrlPWMOutputs(tim, ENABLE);
mbed_official 125:23cc3068a9e4 263 }
mbed_official 135:067cc8ba23da 264
mbed_official 125:23cc3068a9e4 265 TIM_Cmd(tim, ENABLE);
mbed_official 125:23cc3068a9e4 266 }
mbed_official 125:23cc3068a9e4 267
mbed_official 125:23cc3068a9e4 268 void pwmout_pulsewidth(pwmout_t* obj, float seconds) {
mbed_official 125:23cc3068a9e4 269 pwmout_pulsewidth_us(obj, seconds * 1000000.0f);
mbed_official 125:23cc3068a9e4 270 }
mbed_official 125:23cc3068a9e4 271
mbed_official 125:23cc3068a9e4 272 void pwmout_pulsewidth_ms(pwmout_t* obj, int ms) {
mbed_official 125:23cc3068a9e4 273 pwmout_pulsewidth_us(obj, ms * 1000);
mbed_official 125:23cc3068a9e4 274 }
mbed_official 125:23cc3068a9e4 275
mbed_official 125:23cc3068a9e4 276 void pwmout_pulsewidth_us(pwmout_t* obj, int us) {
mbed_official 125:23cc3068a9e4 277 float value = (float)us / (float)obj->period;
mbed_official 125:23cc3068a9e4 278 pwmout_write(obj, value);
mbed_official 125:23cc3068a9e4 279 }
mbed_official 162:937d965048d3 280
mbed_official 162:937d965048d3 281 #endif