Ken Todotani / mbed-src

mbed library sources

Fork of mbed-src by mbed official

targets/hal/TARGET_STM/TARGET_DISCO_F303VC/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:
241:ffe41b0c8126
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 157:90e3acc479a2 1 /* mbed Microcontroller Library
mbed_official 157:90e3acc479a2 2 *******************************************************************************
mbed_official 157:90e3acc479a2 3 * Copyright (c) 2014, STMicroelectronics
mbed_official 157:90e3acc479a2 4 * All rights reserved.
mbed_official 157:90e3acc479a2 5 *
mbed_official 157:90e3acc479a2 6 * Redistribution and use in source and binary forms, with or without
mbed_official 157:90e3acc479a2 7 * modification, are permitted provided that the following conditions are met:
mbed_official 157:90e3acc479a2 8 *
mbed_official 157:90e3acc479a2 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 157:90e3acc479a2 10 * this list of conditions and the following disclaimer.
mbed_official 157:90e3acc479a2 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 157:90e3acc479a2 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 157:90e3acc479a2 13 * and/or other materials provided with the distribution.
mbed_official 157:90e3acc479a2 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 157:90e3acc479a2 15 * may be used to endorse or promote products derived from this software
mbed_official 157:90e3acc479a2 16 * without specific prior written permission.
mbed_official 157:90e3acc479a2 17 *
mbed_official 157:90e3acc479a2 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 157:90e3acc479a2 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 157:90e3acc479a2 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 157:90e3acc479a2 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 157:90e3acc479a2 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 157:90e3acc479a2 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 157:90e3acc479a2 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 157:90e3acc479a2 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 157:90e3acc479a2 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 157:90e3acc479a2 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 157:90e3acc479a2 28 *******************************************************************************
mbed_official 157:90e3acc479a2 29 */
mbed_official 157:90e3acc479a2 30 #include "pwmout_api.h"
mbed_official 157:90e3acc479a2 31
mbed_official 241:ffe41b0c8126 32 #if DEVICE_PWMOUT
mbed_official 241:ffe41b0c8126 33
mbed_official 157:90e3acc479a2 34 #include "cmsis.h"
mbed_official 157:90e3acc479a2 35 #include "pinmap.h"
mbed_official 250:a49055e7a707 36 #include "mbed_error.h"
mbed_official 157:90e3acc479a2 37
mbed_official 157:90e3acc479a2 38 // TIM2 cannot be used because already used by the us_ticker
mbed_official 157:90e3acc479a2 39 static const PinMap PinMap_PWM[] = {
mbed_official 157:90e3acc479a2 40 // {PA_0, PWM_2, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM2_CH1
mbed_official 157:90e3acc479a2 41 // {PA_1, PWM_2, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM2_CH2
mbed_official 157:90e3acc479a2 42 {PA_1, PWM_15, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_9)}, // TIM15_CH1N
mbed_official 157:90e3acc479a2 43 {PA_2, PWM_15, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_9)}, // TIM15_CH1
mbed_official 157:90e3acc479a2 44 {PA_3, PWM_15, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_9)}, // TIM15_CH2
mbed_official 157:90e3acc479a2 45 // {PA_5, PWM_2, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM2_CH1
mbed_official 157:90e3acc479a2 46 {PA_6, PWM_16, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM16_CH1
mbed_official 157:90e3acc479a2 47 {PA_7, PWM_17, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM17_CH1
mbed_official 157:90e3acc479a2 48 // {PA_7, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_6)}, // TIM1_CH1N
mbed_official 157:90e3acc479a2 49 {PA_8, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_6)}, // TIM1_CH1
mbed_official 157:90e3acc479a2 50 {PA_9, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_6)}, // TIM1_CH2
mbed_official 157:90e3acc479a2 51 // {PA_9, PWM_2, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_10)}, // TIM2_CH3
mbed_official 157:90e3acc479a2 52 {PA_10, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_6)}, // TIM1_CH3
mbed_official 157:90e3acc479a2 53 // {PA_10, PWM_2, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_10)}, // TIM2_CH4
mbed_official 157:90e3acc479a2 54 {PA_11, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_11)}, // TIM1_CH4
mbed_official 157:90e3acc479a2 55 // {PA_11, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_6)}, // TIM1_CH1N
mbed_official 157:90e3acc479a2 56 {PA_12, PWM_16, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM16_CH1
mbed_official 157:90e3acc479a2 57 // {PA_12, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_6)}, // TIM1_CH2N
mbed_official 157:90e3acc479a2 58 {PA_13, PWM_16, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM16_CH1N
mbed_official 157:90e3acc479a2 59 // {PA_15, PWM_2, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM2_CH1
mbed_official 157:90e3acc479a2 60
mbed_official 157:90e3acc479a2 61 {PB_0, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_6)}, // TIM1_CH2N
mbed_official 157:90e3acc479a2 62 {PB_1, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_6)}, // TIM1_CH3N
mbed_official 157:90e3acc479a2 63 // {PB_3, PWM_2, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM2_CH2
mbed_official 157:90e3acc479a2 64 {PB_4, PWM_16, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM16_CH1
mbed_official 157:90e3acc479a2 65 {PB_5, PWM_17, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_10)}, // TIM17_CH1
mbed_official 157:90e3acc479a2 66 {PB_6, PWM_16, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM16_CH1N
mbed_official 157:90e3acc479a2 67 {PB_7, PWM_17, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM17_CH1N
mbed_official 157:90e3acc479a2 68 {PB_8, PWM_16, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM16_CH1
mbed_official 157:90e3acc479a2 69 {PB_9, PWM_17, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM17_CH1
mbed_official 157:90e3acc479a2 70 // {PB_10, PWM_2, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM2_CH3
mbed_official 157:90e3acc479a2 71 // {PB_11, PWM_2, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM2_CH4
mbed_official 157:90e3acc479a2 72 {PB_13, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_6)}, // TIM1_CH1N
mbed_official 157:90e3acc479a2 73 {PB_14, PWM_15, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM15_CH1
mbed_official 157:90e3acc479a2 74 // {PB_14, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_6)}, // TIM1_CH2N
mbed_official 157:90e3acc479a2 75 {PB_15, PWM_15, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)}, // TIM15_CH2
mbed_official 157:90e3acc479a2 76 // {PB_15, PWM_15, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_2)}, // TIM15_CH1N
mbed_official 157:90e3acc479a2 77 // {PB_15, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_4)}, // TIM1_CH3N
mbed_official 157:90e3acc479a2 78
mbed_official 157:90e3acc479a2 79 {PC_0, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_2)}, // TIM1_CH1
mbed_official 157:90e3acc479a2 80 {PC_1, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_2)}, // TIM1_CH2
mbed_official 157:90e3acc479a2 81 {PC_2, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_2)}, // TIM1_CH3
mbed_official 157:90e3acc479a2 82 {PC_3, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_2)}, // TIM1_CH4
mbed_official 157:90e3acc479a2 83 {PC_13, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_4)}, // TIM1_CH1N
mbed_official 157:90e3acc479a2 84
mbed_official 157:90e3acc479a2 85 {PF_0, PWM_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_6)}, // TIM1_CH3N
mbed_official 157:90e3acc479a2 86
mbed_official 157:90e3acc479a2 87 {NC, NC, 0}
mbed_official 157:90e3acc479a2 88 };
mbed_official 157:90e3acc479a2 89
mbed_official 227:7bd0639b8911 90 void pwmout_init(pwmout_t* obj, PinName pin) {
mbed_official 157:90e3acc479a2 91 // Get the peripheral name from the pin and assign it to the object
mbed_official 157:90e3acc479a2 92 obj->pwm = (PWMName)pinmap_peripheral(pin, PinMap_PWM);
mbed_official 227:7bd0639b8911 93 MBED_ASSERT(obj->pwm != (PWMName)NC);
mbed_official 157:90e3acc479a2 94
mbed_official 157:90e3acc479a2 95 // Enable TIM clock
mbed_official 157:90e3acc479a2 96 if (obj->pwm == PWM_1) RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE);
mbed_official 157:90e3acc479a2 97 if (obj->pwm == PWM_15) RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM15, ENABLE);
mbed_official 157:90e3acc479a2 98 if (obj->pwm == PWM_16) RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM16, ENABLE);
mbed_official 157:90e3acc479a2 99 if (obj->pwm == PWM_17) RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM17, ENABLE);
mbed_official 157:90e3acc479a2 100
mbed_official 157:90e3acc479a2 101 // Configure GPIO
mbed_official 157:90e3acc479a2 102 pinmap_pinout(pin, PinMap_PWM);
mbed_official 157:90e3acc479a2 103
mbed_official 157:90e3acc479a2 104 obj->pin = pin;
mbed_official 157:90e3acc479a2 105 obj->period = 0;
mbed_official 157:90e3acc479a2 106 obj->pulse = 0;
mbed_official 157:90e3acc479a2 107
mbed_official 157:90e3acc479a2 108 pwmout_period_us(obj, 20000); // 20 ms per default
mbed_official 157:90e3acc479a2 109 }
mbed_official 157:90e3acc479a2 110
mbed_official 157:90e3acc479a2 111 void pwmout_free(pwmout_t* obj) {
mbed_official 157:90e3acc479a2 112 TIM_TypeDef *tim = (TIM_TypeDef *)(obj->pwm);
mbed_official 157:90e3acc479a2 113 TIM_DeInit(tim);
mbed_official 157:90e3acc479a2 114 }
mbed_official 157:90e3acc479a2 115
mbed_official 157:90e3acc479a2 116 void pwmout_write(pwmout_t* obj, float value) {
mbed_official 157:90e3acc479a2 117 TIM_TypeDef *tim = (TIM_TypeDef *)(obj->pwm);
mbed_official 157:90e3acc479a2 118 TIM_OCInitTypeDef TIM_OCInitStructure;
mbed_official 157:90e3acc479a2 119
mbed_official 157:90e3acc479a2 120 if (value < (float)0.0) {
mbed_official 157:90e3acc479a2 121 value = (float)0.0;
mbed_official 157:90e3acc479a2 122 } else if (value > (float)1.0) {
mbed_official 157:90e3acc479a2 123 value = (float)1.0;
mbed_official 157:90e3acc479a2 124 }
mbed_official 157:90e3acc479a2 125
mbed_official 157:90e3acc479a2 126 obj->pulse = (uint32_t)((float)obj->period * value);
mbed_official 157:90e3acc479a2 127
mbed_official 227:7bd0639b8911 128 // Configure channels
mbed_official 157:90e3acc479a2 129 TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
mbed_official 157:90e3acc479a2 130 TIM_OCInitStructure.TIM_Pulse = obj->pulse;
mbed_official 157:90e3acc479a2 131 TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
mbed_official 157:90e3acc479a2 132 TIM_OCInitStructure.TIM_OCNPolarity = TIM_OCPolarity_High;
mbed_official 157:90e3acc479a2 133 TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Reset;
mbed_official 157:90e3acc479a2 134 TIM_OCInitStructure.TIM_OCNIdleState = TIM_OCNIdleState_Reset;
mbed_official 157:90e3acc479a2 135
mbed_official 157:90e3acc479a2 136 switch (obj->pin) {
mbed_official 157:90e3acc479a2 137 // Channels 1
mbed_official 157:90e3acc479a2 138 // case PA_0:
mbed_official 157:90e3acc479a2 139 case PA_2:
mbed_official 157:90e3acc479a2 140 // case PA_5:
mbed_official 157:90e3acc479a2 141 case PA_6:
mbed_official 157:90e3acc479a2 142 case PA_7:
mbed_official 157:90e3acc479a2 143 case PA_8:
mbed_official 157:90e3acc479a2 144 case PA_12:
mbed_official 157:90e3acc479a2 145 // case PA_15:
mbed_official 157:90e3acc479a2 146 case PB_4:
mbed_official 157:90e3acc479a2 147 case PB_5:
mbed_official 157:90e3acc479a2 148 case PB_8:
mbed_official 157:90e3acc479a2 149 case PB_9:
mbed_official 157:90e3acc479a2 150 case PB_14:
mbed_official 157:90e3acc479a2 151 case PC_0:
mbed_official 157:90e3acc479a2 152 TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
mbed_official 157:90e3acc479a2 153 TIM_OC1PreloadConfig(tim, TIM_OCPreload_Enable);
mbed_official 157:90e3acc479a2 154 TIM_OC1Init(tim, &TIM_OCInitStructure);
mbed_official 157:90e3acc479a2 155 break;
mbed_official 157:90e3acc479a2 156 // Channels 1N
mbed_official 157:90e3acc479a2 157 case PA_1:
mbed_official 157:90e3acc479a2 158 // case PA_7:
mbed_official 157:90e3acc479a2 159 // case PA_11:
mbed_official 157:90e3acc479a2 160 case PA_13:
mbed_official 157:90e3acc479a2 161 case PB_6:
mbed_official 157:90e3acc479a2 162 case PB_7:
mbed_official 157:90e3acc479a2 163 case PB_13:
mbed_official 157:90e3acc479a2 164 // case PB_15:
mbed_official 157:90e3acc479a2 165 case PC_13:
mbed_official 157:90e3acc479a2 166 TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Enable;
mbed_official 157:90e3acc479a2 167 TIM_OC1PreloadConfig(tim, TIM_OCPreload_Enable);
mbed_official 157:90e3acc479a2 168 TIM_OC1Init(tim, &TIM_OCInitStructure);
mbed_official 157:90e3acc479a2 169 break;
mbed_official 157:90e3acc479a2 170 // Channels 2
mbed_official 157:90e3acc479a2 171 // case PA_1:
mbed_official 157:90e3acc479a2 172 case PA_3:
mbed_official 157:90e3acc479a2 173 case PA_9:
mbed_official 157:90e3acc479a2 174 // case PB_3:
mbed_official 157:90e3acc479a2 175 case PB_15:
mbed_official 157:90e3acc479a2 176 case PC_1:
mbed_official 157:90e3acc479a2 177 TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
mbed_official 157:90e3acc479a2 178 TIM_OC2PreloadConfig(tim, TIM_OCPreload_Enable);
mbed_official 157:90e3acc479a2 179 TIM_OC2Init(tim, &TIM_OCInitStructure);
mbed_official 157:90e3acc479a2 180 break;
mbed_official 157:90e3acc479a2 181 // Channels 2N
mbed_official 157:90e3acc479a2 182 // case PA_12:
mbed_official 157:90e3acc479a2 183 case PB_0:
mbed_official 157:90e3acc479a2 184 // case PB_14:
mbed_official 157:90e3acc479a2 185 TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Enable;
mbed_official 157:90e3acc479a2 186 TIM_OC2PreloadConfig(tim, TIM_OCPreload_Enable);
mbed_official 157:90e3acc479a2 187 TIM_OC2Init(tim, &TIM_OCInitStructure);
mbed_official 157:90e3acc479a2 188 break;
mbed_official 157:90e3acc479a2 189 // Channels 3
mbed_official 157:90e3acc479a2 190 // case PA_9:
mbed_official 157:90e3acc479a2 191 case PA_10:
mbed_official 157:90e3acc479a2 192 // case PB_10:
mbed_official 157:90e3acc479a2 193 case PC_2:
mbed_official 157:90e3acc479a2 194 TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
mbed_official 157:90e3acc479a2 195 TIM_OC3PreloadConfig(tim, TIM_OCPreload_Enable);
mbed_official 157:90e3acc479a2 196 TIM_OC3Init(tim, &TIM_OCInitStructure);
mbed_official 157:90e3acc479a2 197 break;
mbed_official 157:90e3acc479a2 198 // Channels 3N
mbed_official 157:90e3acc479a2 199 case PB_1:
mbed_official 157:90e3acc479a2 200 case PF_0:
mbed_official 157:90e3acc479a2 201 // case PB_15:
mbed_official 157:90e3acc479a2 202 TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Enable;
mbed_official 157:90e3acc479a2 203 TIM_OC3PreloadConfig(tim, TIM_OCPreload_Enable);
mbed_official 157:90e3acc479a2 204 TIM_OC3Init(tim, &TIM_OCInitStructure);
mbed_official 157:90e3acc479a2 205 break;
mbed_official 157:90e3acc479a2 206 // Channels 4
mbed_official 157:90e3acc479a2 207 // case PA_10:
mbed_official 157:90e3acc479a2 208 case PA_11:
mbed_official 157:90e3acc479a2 209 // case PB_11:
mbed_official 157:90e3acc479a2 210 case PC_3:
mbed_official 157:90e3acc479a2 211 TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
mbed_official 157:90e3acc479a2 212 TIM_OC4PreloadConfig(tim, TIM_OCPreload_Enable);
mbed_official 157:90e3acc479a2 213 TIM_OC4Init(tim, &TIM_OCInitStructure);
mbed_official 157:90e3acc479a2 214 break;
mbed_official 157:90e3acc479a2 215 default:
mbed_official 157:90e3acc479a2 216 return;
mbed_official 227:7bd0639b8911 217 }
mbed_official 157:90e3acc479a2 218 }
mbed_official 157:90e3acc479a2 219
mbed_official 157:90e3acc479a2 220 float pwmout_read(pwmout_t* obj) {
mbed_official 157:90e3acc479a2 221 float value = 0;
mbed_official 157:90e3acc479a2 222 if (obj->period > 0) {
mbed_official 157:90e3acc479a2 223 value = (float)(obj->pulse) / (float)(obj->period);
mbed_official 157:90e3acc479a2 224 }
mbed_official 157:90e3acc479a2 225 return ((value > (float)1.0) ? ((float)1.0) : (value));
mbed_official 157:90e3acc479a2 226 }
mbed_official 157:90e3acc479a2 227
mbed_official 157:90e3acc479a2 228 void pwmout_period(pwmout_t* obj, float seconds) {
mbed_official 157:90e3acc479a2 229 pwmout_period_us(obj, seconds * 1000000.0f);
mbed_official 157:90e3acc479a2 230 }
mbed_official 157:90e3acc479a2 231
mbed_official 157:90e3acc479a2 232 void pwmout_period_ms(pwmout_t* obj, int ms) {
mbed_official 157:90e3acc479a2 233 pwmout_period_us(obj, ms * 1000);
mbed_official 157:90e3acc479a2 234 }
mbed_official 157:90e3acc479a2 235
mbed_official 157:90e3acc479a2 236 void pwmout_period_us(pwmout_t* obj, int us) {
mbed_official 157:90e3acc479a2 237 TIM_TypeDef *tim = (TIM_TypeDef *)(obj->pwm);
mbed_official 157:90e3acc479a2 238 TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
mbed_official 157:90e3acc479a2 239 float dc = pwmout_read(obj);
mbed_official 157:90e3acc479a2 240
mbed_official 227:7bd0639b8911 241 TIM_Cmd(tim, DISABLE);
mbed_official 157:90e3acc479a2 242
mbed_official 157:90e3acc479a2 243 obj->period = us;
mbed_official 157:90e3acc479a2 244
mbed_official 157:90e3acc479a2 245 TIM_TimeBaseStructInit(&TIM_TimeBaseStructure);
mbed_official 157:90e3acc479a2 246 TIM_TimeBaseStructure.TIM_Period = obj->period - 1;
mbed_official 157:90e3acc479a2 247 TIM_TimeBaseStructure.TIM_Prescaler = (uint16_t)(SystemCoreClock / 1000000) - 1; // 1 µs tick
mbed_official 157:90e3acc479a2 248 TIM_TimeBaseStructure.TIM_ClockDivision = 0;
mbed_official 157:90e3acc479a2 249 TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
mbed_official 157:90e3acc479a2 250 TIM_TimeBaseInit(tim, &TIM_TimeBaseStructure);
mbed_official 157:90e3acc479a2 251
mbed_official 157:90e3acc479a2 252 // Set duty cycle again
mbed_official 157:90e3acc479a2 253 pwmout_write(obj, dc);
mbed_official 157:90e3acc479a2 254
mbed_official 157:90e3acc479a2 255 TIM_ARRPreloadConfig(tim, ENABLE);
mbed_official 157:90e3acc479a2 256
mbed_official 157:90e3acc479a2 257 // Warning: Main Output must be enabled on TIM1, TIM8, TIM5, TIM6 and TIM17
mbed_official 157:90e3acc479a2 258 if ((obj->pwm == PWM_1) || (obj->pwm == PWM_15) || (obj->pwm == PWM_16) || (obj->pwm == PWM_17)) {
mbed_official 157:90e3acc479a2 259 TIM_CtrlPWMOutputs(tim, ENABLE);
mbed_official 157:90e3acc479a2 260 }
mbed_official 157:90e3acc479a2 261
mbed_official 157:90e3acc479a2 262 TIM_Cmd(tim, ENABLE);
mbed_official 157:90e3acc479a2 263 }
mbed_official 157:90e3acc479a2 264
mbed_official 157:90e3acc479a2 265 void pwmout_pulsewidth(pwmout_t* obj, float seconds) {
mbed_official 157:90e3acc479a2 266 pwmout_pulsewidth_us(obj, seconds * 1000000.0f);
mbed_official 157:90e3acc479a2 267 }
mbed_official 157:90e3acc479a2 268
mbed_official 157:90e3acc479a2 269 void pwmout_pulsewidth_ms(pwmout_t* obj, int ms) {
mbed_official 157:90e3acc479a2 270 pwmout_pulsewidth_us(obj, ms * 1000);
mbed_official 157:90e3acc479a2 271 }
mbed_official 157:90e3acc479a2 272
mbed_official 157:90e3acc479a2 273 void pwmout_pulsewidth_us(pwmout_t* obj, int us) {
mbed_official 157:90e3acc479a2 274 float value = (float)us / (float)obj->period;
mbed_official 157:90e3acc479a2 275 pwmout_write(obj, value);
mbed_official 157:90e3acc479a2 276 }
mbed_official 241:ffe41b0c8126 277
mbed_official 241:ffe41b0c8126 278 #endif