shao ziyang / mbed-src-kl05

mbed library sources

Dependents:   frdm_kl05z_gpio_test

Fork of mbed-src by mbed official

targets/hal/TARGET_STM/TARGET_NUCLEO_F334R8/pwmout_api.c@237:f3da66175598, 2014-06-24 (annotated)

Committer:
mbed_official
Date:
Tue Jun 24 14:45:08 2014 +0100
Revision:
237:f3da66175598
Child:
250:a49055e7a707
Synchronized with git revision 8ef659bca81f12dfc896b5a7af7c2abbd1a1b8b7



Full URL: https://github.com/mbedmicro/mbed/commit/8ef659bca81f12dfc896b5a7af7c2abbd1a1b8b7/



[NUCLEO_F334R8] Add platform files

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 237:f3da66175598 1 /* mbed Microcontroller Library
mbed_official 237:f3da66175598 2 *******************************************************************************
mbed_official 237:f3da66175598 3 * Copyright (c) 2014, STMicroelectronics
mbed_official 237:f3da66175598 4 * All rights reserved.
mbed_official 237:f3da66175598 5 *
mbed_official 237:f3da66175598 6 * Redistribution and use in source and binary forms, with or without
mbed_official 237:f3da66175598 7 * modification, are permitted provided that the following conditions are met:
mbed_official 237:f3da66175598 8 *
mbed_official 237:f3da66175598 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 237:f3da66175598 10 * this list of conditions and the following disclaimer.
mbed_official 237:f3da66175598 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 237:f3da66175598 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 237:f3da66175598 13 * and/or other materials provided with the distribution.
mbed_official 237:f3da66175598 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 237:f3da66175598 15 * may be used to endorse or promote products derived from this software
mbed_official 237:f3da66175598 16 * without specific prior written permission.
mbed_official 237:f3da66175598 17 *
mbed_official 237:f3da66175598 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 237:f3da66175598 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 237:f3da66175598 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 237:f3da66175598 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 237:f3da66175598 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 237:f3da66175598 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 237:f3da66175598 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 237:f3da66175598 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 237:f3da66175598 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 237:f3da66175598 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 237:f3da66175598 28 *******************************************************************************
mbed_official 237:f3da66175598 29 */
mbed_official 237:f3da66175598 30 #include "pwmout_api.h"
mbed_official 237:f3da66175598 31
mbed_official 237:f3da66175598 32 #if DEVICE_PWMOUT
mbed_official 237:f3da66175598 33
mbed_official 237:f3da66175598 34 #include "cmsis.h"
mbed_official 237:f3da66175598 35 #include "pinmap.h"
mbed_official 237:f3da66175598 36 #include "error.h"
mbed_official 237:f3da66175598 37
mbed_official 237:f3da66175598 38 // TIM2 cannot be used because already used by the us_ticker
mbed_official 237:f3da66175598 39 static const PinMap PinMap_PWM[] = {
mbed_official 237:f3da66175598 40 // {PA_0, PWM_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2)}, // TIM2_CH1
mbed_official 237:f3da66175598 41 // {PA_1, PWM_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2)}, // TIM2_CH2
mbed_official 237:f3da66175598 42 {PA_1, PWM_15, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF9_TIM15)}, // TIM15_CH1N
mbed_official 237:f3da66175598 43 // {PA_2, PWM_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2)}, // TIM2_CH3
mbed_official 237:f3da66175598 44 {PA_2, PWM_15, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF9_TIM15)}, // TIM15_CH1
mbed_official 237:f3da66175598 45 // {PA_3, PWM_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2)}, // TIM2_CH4
mbed_official 237:f3da66175598 46 {PA_3, PWM_15, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF9_TIM15)}, // TIM15_CH2
mbed_official 237:f3da66175598 47 {PA_4, PWM_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM3)}, // TIM3_CH2
mbed_official 237:f3da66175598 48 // {PA_5, PWM_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2)}, // TIM2_CH1
mbed_official 237:f3da66175598 49 {PA_6, PWM_16, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM16)}, // TIM16_CH1
mbed_official 237:f3da66175598 50 // {PA_6, PWM_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM3)}, // TIM3_CH1
mbed_official 237:f3da66175598 51 {PA_7, PWM_17, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM17)}, // TIM17_CH1 - ARDUINO
mbed_official 237:f3da66175598 52 // {PA_7, PWM_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM3)}, // TIM3_CH2 - ARDUINO
mbed_official 237:f3da66175598 53 // {PA_7, PWM_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_TIM1)}, // TIM1_CH1N - ARDUINO
mbed_official 237:f3da66175598 54 {PA_8, PWM_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_TIM1)}, // TIM1_CH1
mbed_official 237:f3da66175598 55 {PA_9, PWM_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_TIM1)}, // TIM1_CH2
mbed_official 237:f3da66175598 56 // {PA_9, PWM_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_TIM2)}, // TIM2_CH3
mbed_official 237:f3da66175598 57 {PA_10, PWM_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_TIM1)}, // TIM1_CH3
mbed_official 237:f3da66175598 58 // {PA_10, PWM_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_TIM2)}, // TIM2_CH4
mbed_official 237:f3da66175598 59 // {PA_11, PWM_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_TIM1)}, // TIM1_CH1N
mbed_official 237:f3da66175598 60 {PA_11, PWM_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF11_TIM1)}, // TIM1_CH4
mbed_official 237:f3da66175598 61 {PA_12, PWM_16, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM16)}, // TIM16_CH1
mbed_official 237:f3da66175598 62 // {PA_12, PWM_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_TIM1)}, // TIM1_CH2N
mbed_official 237:f3da66175598 63 {PA_13, PWM_16, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM16)}, // TIM16_CH1N
mbed_official 237:f3da66175598 64 // {PA_15, PWM_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2)}, // TIM2_CH1
mbed_official 237:f3da66175598 65
mbed_official 237:f3da66175598 66 {PB_0, PWM_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM3)}, // TIM3_CH3
mbed_official 237:f3da66175598 67 // {PB_0, PWM_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_TIM1)}, // TIM1_CH2N
mbed_official 237:f3da66175598 68 {PB_1, PWM_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM3)}, // TIM3_CH4
mbed_official 237:f3da66175598 69 // {PB_1, PWM_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_TIM1)}, // TIM1_CH3N
mbed_official 237:f3da66175598 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 237:f3da66175598 71 {PB_4, PWM_16, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM16)}, // TIM16_CH1 - ARDUINO
mbed_official 237:f3da66175598 72 // {PB_4, PWM_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM3)}, // TIM3_CH1 - ARDUINO
mbed_official 237:f3da66175598 73 // {PB_5, PWM_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM3)}, // TIM3_CH2
mbed_official 237:f3da66175598 74 {PB_5, PWM_17, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_TIM17)}, // TIM17_CH1
mbed_official 237:f3da66175598 75 {PB_6, PWM_16, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM16)}, // TIM16_CH1N - ARDUINO
mbed_official 237:f3da66175598 76 // {PB_7, PWM_17, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM17)}, // TIM17_CH1N
mbed_official 237:f3da66175598 77 {PB_7, PWM_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_TIM3)}, // TIM3_CH4
mbed_official 237:f3da66175598 78 {PB_8, PWM_16, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM16)}, // TIM16_CH1
mbed_official 237:f3da66175598 79 {PB_9, PWM_17, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM17)}, // TIM17_CH1
mbed_official 237:f3da66175598 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 237:f3da66175598 81 // {PB_11, PWM_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2)}, // TIM2_CH4
mbed_official 237:f3da66175598 82 {PB_13, PWM_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_TIM1)}, // TIM1_CH1N
mbed_official 237:f3da66175598 83 {PB_14, PWM_15, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM15)}, // TIM15_CH1
mbed_official 237:f3da66175598 84 // {PB_14, PWM_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_TIM1)}, // TIM1_CH2N
mbed_official 237:f3da66175598 85 {PB_15, PWM_15, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM15)}, // TIM15_CH2
mbed_official 237:f3da66175598 86 // {PB_15, PWM_15, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM15)}, // TIM15_CH1N
mbed_official 237:f3da66175598 87 // {PB_15, PWM_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_TIM1)}, // TIM1_CH3N
mbed_official 237:f3da66175598 88
mbed_official 237:f3da66175598 89 {PC_0, PWM_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM1)}, // TIM1_CH1
mbed_official 237:f3da66175598 90 {PC_1, PWM_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM1)}, // TIM1_CH2
mbed_official 237:f3da66175598 91 {PC_2, PWM_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM1)}, // TIM1_CH3
mbed_official 237:f3da66175598 92 {PC_3, PWM_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM1)}, // TIM1_CH4
mbed_official 237:f3da66175598 93 {PC_6, PWM_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM3)}, // TIM3_CH1
mbed_official 237:f3da66175598 94 {PC_7, PWM_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM3)}, // TIM3_CH2 - ARDUINO
mbed_official 237:f3da66175598 95 {PC_8, PWM_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM3)}, // TIM3_CH3
mbed_official 237:f3da66175598 96 {PC_9, PWM_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM3)}, // TIM3_CH4
mbed_official 237:f3da66175598 97 {PC_13, PWM_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_TIM1)}, // TIM1_CH1N
mbed_official 237:f3da66175598 98
mbed_official 237:f3da66175598 99 {PF_0, PWM_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_TIM1)}, // TIM1_CH3N
mbed_official 237:f3da66175598 100 {NC, NC, 0}
mbed_official 237:f3da66175598 101 };
mbed_official 237:f3da66175598 102
mbed_official 237:f3da66175598 103 static TIM_HandleTypeDef TimHandle;
mbed_official 237:f3da66175598 104
mbed_official 237:f3da66175598 105 void pwmout_init(pwmout_t* obj, PinName pin)
mbed_official 237:f3da66175598 106 {
mbed_official 237:f3da66175598 107 // Get the peripheral name from the pin and assign it to the object
mbed_official 237:f3da66175598 108 obj->pwm = (PWMName)pinmap_peripheral(pin, PinMap_PWM);
mbed_official 237:f3da66175598 109
mbed_official 237:f3da66175598 110 if (obj->pwm == (PWMName)NC) {
mbed_official 237:f3da66175598 111 error("PWM error: pinout mapping failed.");
mbed_official 237:f3da66175598 112 }
mbed_official 237:f3da66175598 113
mbed_official 237:f3da66175598 114 // Enable TIM clock
mbed_official 237:f3da66175598 115 if (obj->pwm == PWM_1) __TIM1_CLK_ENABLE();
mbed_official 237:f3da66175598 116 if (obj->pwm == PWM_2) __TIM2_CLK_ENABLE();
mbed_official 237:f3da66175598 117 if (obj->pwm == PWM_3) __TIM3_CLK_ENABLE();
mbed_official 237:f3da66175598 118 if (obj->pwm == PWM_15) __TIM15_CLK_ENABLE();
mbed_official 237:f3da66175598 119 if (obj->pwm == PWM_16) __TIM16_CLK_ENABLE();
mbed_official 237:f3da66175598 120 if (obj->pwm == PWM_17) __TIM17_CLK_ENABLE();
mbed_official 237:f3da66175598 121
mbed_official 237:f3da66175598 122 // Configure GPIO
mbed_official 237:f3da66175598 123 pinmap_pinout(pin, PinMap_PWM);
mbed_official 237:f3da66175598 124
mbed_official 237:f3da66175598 125 obj->pin = pin;
mbed_official 237:f3da66175598 126 obj->period = 0;
mbed_official 237:f3da66175598 127 obj->pulse = 0;
mbed_official 237:f3da66175598 128
mbed_official 237:f3da66175598 129 pwmout_period_us(obj, 20000); // 20 ms per default
mbed_official 237:f3da66175598 130 }
mbed_official 237:f3da66175598 131
mbed_official 237:f3da66175598 132 void pwmout_free(pwmout_t* obj)
mbed_official 237:f3da66175598 133 {
mbed_official 237:f3da66175598 134 // Configure GPIO
mbed_official 237:f3da66175598 135 pin_function(obj->pin, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
mbed_official 237:f3da66175598 136 }
mbed_official 237:f3da66175598 137
mbed_official 237:f3da66175598 138 void pwmout_write(pwmout_t* obj, float value)
mbed_official 237:f3da66175598 139 {
mbed_official 237:f3da66175598 140 TIM_OC_InitTypeDef sConfig;
mbed_official 237:f3da66175598 141 int channel = 0;
mbed_official 237:f3da66175598 142 int complementary_channel = 0;
mbed_official 237:f3da66175598 143
mbed_official 237:f3da66175598 144 TimHandle.Instance = (TIM_TypeDef *)(obj->pwm);
mbed_official 237:f3da66175598 145
mbed_official 237:f3da66175598 146 if (value < (float)0.0) {
mbed_official 237:f3da66175598 147 value = 0.0;
mbed_official 237:f3da66175598 148 } else if (value > (float)1.0) {
mbed_official 237:f3da66175598 149 value = 1.0;
mbed_official 237:f3da66175598 150 }
mbed_official 237:f3da66175598 151
mbed_official 237:f3da66175598 152 obj->pulse = (uint32_t)((float)obj->period * value);
mbed_official 237:f3da66175598 153
mbed_official 237:f3da66175598 154 // Configure channels
mbed_official 237:f3da66175598 155 sConfig.OCMode = TIM_OCMODE_PWM1;
mbed_official 237:f3da66175598 156 sConfig.Pulse = obj->pulse;
mbed_official 237:f3da66175598 157 sConfig.OCPolarity = TIM_OCPOLARITY_HIGH;
mbed_official 237:f3da66175598 158 sConfig.OCNPolarity = TIM_OCNPOLARITY_HIGH;
mbed_official 237:f3da66175598 159 sConfig.OCFastMode = TIM_OCFAST_DISABLE;
mbed_official 237:f3da66175598 160 sConfig.OCIdleState = TIM_OCIDLESTATE_RESET;
mbed_official 237:f3da66175598 161 sConfig.OCNIdleState = TIM_OCNIDLESTATE_RESET;
mbed_official 237:f3da66175598 162
mbed_official 237:f3da66175598 163 switch (obj->pin) {
mbed_official 237:f3da66175598 164
mbed_official 237:f3da66175598 165 // Channels 1
mbed_official 237:f3da66175598 166 case PA_2:
mbed_official 237:f3da66175598 167 case PA_6:
mbed_official 237:f3da66175598 168 case PA_7:
mbed_official 237:f3da66175598 169 case PA_8:
mbed_official 237:f3da66175598 170 case PA_12:
mbed_official 237:f3da66175598 171 case PB_4:
mbed_official 237:f3da66175598 172 case PB_5:
mbed_official 237:f3da66175598 173 case PB_8:
mbed_official 237:f3da66175598 174 case PB_9:
mbed_official 237:f3da66175598 175 case PB_14:
mbed_official 237:f3da66175598 176 case PC_0:
mbed_official 237:f3da66175598 177 case PC_6:
mbed_official 237:f3da66175598 178 channel = TIM_CHANNEL_1;
mbed_official 237:f3da66175598 179 break;
mbed_official 237:f3da66175598 180
mbed_official 237:f3da66175598 181 // Channels 1N
mbed_official 237:f3da66175598 182 case PA_1:
mbed_official 237:f3da66175598 183 case PA_13:
mbed_official 237:f3da66175598 184 case PB_6:
mbed_official 237:f3da66175598 185 case PB_13:
mbed_official 237:f3da66175598 186 case PC_13:
mbed_official 237:f3da66175598 187 channel = TIM_CHANNEL_1;
mbed_official 237:f3da66175598 188 complementary_channel = 1;
mbed_official 237:f3da66175598 189 break;
mbed_official 237:f3da66175598 190
mbed_official 237:f3da66175598 191 // Channels 2
mbed_official 237:f3da66175598 192 case PA_3:
mbed_official 237:f3da66175598 193 case PA_4:
mbed_official 237:f3da66175598 194 case PA_9:
mbed_official 237:f3da66175598 195 case PB_15:
mbed_official 237:f3da66175598 196 case PC_1:
mbed_official 237:f3da66175598 197 case PC_7:
mbed_official 237:f3da66175598 198 channel = TIM_CHANNEL_2;
mbed_official 237:f3da66175598 199 break;
mbed_official 237:f3da66175598 200
mbed_official 237:f3da66175598 201 // Channels 3
mbed_official 237:f3da66175598 202 case PA_10:
mbed_official 237:f3da66175598 203 case PB_0:
mbed_official 237:f3da66175598 204 case PC_2:
mbed_official 237:f3da66175598 205 case PC_8:
mbed_official 237:f3da66175598 206 channel = TIM_CHANNEL_3;
mbed_official 237:f3da66175598 207 break;
mbed_official 237:f3da66175598 208
mbed_official 237:f3da66175598 209 // Channels 3N
mbed_official 237:f3da66175598 210 case PF_0:
mbed_official 237:f3da66175598 211 channel = TIM_CHANNEL_3;
mbed_official 237:f3da66175598 212 complementary_channel = 1;
mbed_official 237:f3da66175598 213 break;
mbed_official 237:f3da66175598 214
mbed_official 237:f3da66175598 215 // Channels 4
mbed_official 237:f3da66175598 216 case PA_11:
mbed_official 237:f3da66175598 217 case PB_1:
mbed_official 237:f3da66175598 218 case PB_7:
mbed_official 237:f3da66175598 219 case PC_3:
mbed_official 237:f3da66175598 220 case PC_9:
mbed_official 237:f3da66175598 221 channel = TIM_CHANNEL_4;
mbed_official 237:f3da66175598 222 break;
mbed_official 237:f3da66175598 223
mbed_official 237:f3da66175598 224 default:
mbed_official 237:f3da66175598 225 return;
mbed_official 237:f3da66175598 226 }
mbed_official 237:f3da66175598 227
mbed_official 237:f3da66175598 228 HAL_TIM_PWM_ConfigChannel(&TimHandle, &sConfig, channel);
mbed_official 237:f3da66175598 229
mbed_official 237:f3da66175598 230 if (complementary_channel) {
mbed_official 237:f3da66175598 231 HAL_TIMEx_PWMN_Start(&TimHandle, channel);
mbed_official 237:f3da66175598 232 } else {
mbed_official 237:f3da66175598 233 HAL_TIM_PWM_Start(&TimHandle, channel);
mbed_official 237:f3da66175598 234 }
mbed_official 237:f3da66175598 235 }
mbed_official 237:f3da66175598 236
mbed_official 237:f3da66175598 237 float pwmout_read(pwmout_t* obj)
mbed_official 237:f3da66175598 238 {
mbed_official 237:f3da66175598 239 float value = 0;
mbed_official 237:f3da66175598 240 if (obj->period > 0) {
mbed_official 237:f3da66175598 241 value = (float)(obj->pulse) / (float)(obj->period);
mbed_official 237:f3da66175598 242 }
mbed_official 237:f3da66175598 243 return ((value > (float)1.0) ? (float)(1.0) : (value));
mbed_official 237:f3da66175598 244 }
mbed_official 237:f3da66175598 245
mbed_official 237:f3da66175598 246 void pwmout_period(pwmout_t* obj, float seconds)
mbed_official 237:f3da66175598 247 {
mbed_official 237:f3da66175598 248 pwmout_period_us(obj, seconds * 1000000.0f);
mbed_official 237:f3da66175598 249 }
mbed_official 237:f3da66175598 250
mbed_official 237:f3da66175598 251 void pwmout_period_ms(pwmout_t* obj, int ms)
mbed_official 237:f3da66175598 252 {
mbed_official 237:f3da66175598 253 pwmout_period_us(obj, ms * 1000);
mbed_official 237:f3da66175598 254 }
mbed_official 237:f3da66175598 255
mbed_official 237:f3da66175598 256 void pwmout_period_us(pwmout_t* obj, int us)
mbed_official 237:f3da66175598 257 {
mbed_official 237:f3da66175598 258 TimHandle.Instance = (TIM_TypeDef *)(obj->pwm);
mbed_official 237:f3da66175598 259
mbed_official 237:f3da66175598 260 float dc = pwmout_read(obj);
mbed_official 237:f3da66175598 261
mbed_official 237:f3da66175598 262 __HAL_TIM_DISABLE(&TimHandle);
mbed_official 237:f3da66175598 263
mbed_official 237:f3da66175598 264 // Update the SystemCoreClock variable
mbed_official 237:f3da66175598 265 SystemCoreClockUpdate();
mbed_official 237:f3da66175598 266
mbed_official 237:f3da66175598 267 TimHandle.Init.Period = us - 1;
mbed_official 237:f3da66175598 268 TimHandle.Init.Prescaler = (uint16_t)(SystemCoreClock / 1000000) - 1; // 1 µs tick
mbed_official 237:f3da66175598 269 TimHandle.Init.ClockDivision = 0;
mbed_official 237:f3da66175598 270 TimHandle.Init.CounterMode = TIM_COUNTERMODE_UP;
mbed_official 237:f3da66175598 271 HAL_TIM_PWM_Init(&TimHandle);
mbed_official 237:f3da66175598 272
mbed_official 237:f3da66175598 273 // Set duty cycle again
mbed_official 237:f3da66175598 274 pwmout_write(obj, dc);
mbed_official 237:f3da66175598 275
mbed_official 237:f3da66175598 276 // Save for future use
mbed_official 237:f3da66175598 277 obj->period = us;
mbed_official 237:f3da66175598 278
mbed_official 237:f3da66175598 279 __HAL_TIM_ENABLE(&TimHandle);
mbed_official 237:f3da66175598 280 }
mbed_official 237:f3da66175598 281
mbed_official 237:f3da66175598 282 void pwmout_pulsewidth(pwmout_t* obj, float seconds)
mbed_official 237:f3da66175598 283 {
mbed_official 237:f3da66175598 284 pwmout_pulsewidth_us(obj, seconds * 1000000.0f);
mbed_official 237:f3da66175598 285 }
mbed_official 237:f3da66175598 286
mbed_official 237:f3da66175598 287 void pwmout_pulsewidth_ms(pwmout_t* obj, int ms)
mbed_official 237:f3da66175598 288 {
mbed_official 237:f3da66175598 289 pwmout_pulsewidth_us(obj, ms * 1000);
mbed_official 237:f3da66175598 290 }
mbed_official 237:f3da66175598 291
mbed_official 237:f3da66175598 292 void pwmout_pulsewidth_us(pwmout_t* obj, int us)
mbed_official 237:f3da66175598 293 {
mbed_official 237:f3da66175598 294 float value = (float)us / (float)obj->period;
mbed_official 237:f3da66175598 295 pwmout_write(obj, value);
mbed_official 237:f3da66175598 296 }
mbed_official 237:f3da66175598 297
mbed_official 237:f3da66175598 298 #endif