ON Semiconductor / mbed-os

5.2.1 - Updated I2C files

Dependents:   mbed-TFT-example-NCS36510 mbed-Accelerometer-example-NCS36510 mbed-Accelerometer-example-NCS36510

targets/TARGET_STM/TARGET_STM32F3/pwmout_api.c@1:f30bdcd2b33b, 2017-02-27 (annotated)

Committer:
jacobjohnson
Date:
Mon Feb 27 17:45:05 2017 +0000
Revision:
1:f30bdcd2b33b
Parent:
0:098463de4c5d 
changed the inputscale from 1 to 7 in analogin_api.c.  This will need to be changed later, and accessed from the main level, but for now this allows the  adc to read a value from 0 to 3.7V, instead of just up to 1V.;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
group-onsemi 0:098463de4c5d 1 /* mbed Microcontroller Library
group-onsemi 0:098463de4c5d 2 *******************************************************************************
group-onsemi 0:098463de4c5d 3 * Copyright (c) 2015, STMicroelectronics
group-onsemi 0:098463de4c5d 4 * All rights reserved.
group-onsemi 0:098463de4c5d 5 *
group-onsemi 0:098463de4c5d 6 * Redistribution and use in source and binary forms, with or without
group-onsemi 0:098463de4c5d 7 * modification, are permitted provided that the following conditions are met:
group-onsemi 0:098463de4c5d 8 *
group-onsemi 0:098463de4c5d 9 * 1. Redistributions of source code must retain the above copyright notice,
group-onsemi 0:098463de4c5d 10 * this list of conditions and the following disclaimer.
group-onsemi 0:098463de4c5d 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
group-onsemi 0:098463de4c5d 12 * this list of conditions and the following disclaimer in the documentation
group-onsemi 0:098463de4c5d 13 * and/or other materials provided with the distribution.
group-onsemi 0:098463de4c5d 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
group-onsemi 0:098463de4c5d 15 * may be used to endorse or promote products derived from this software
group-onsemi 0:098463de4c5d 16 * without specific prior written permission.
group-onsemi 0:098463de4c5d 17 *
group-onsemi 0:098463de4c5d 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
group-onsemi 0:098463de4c5d 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
group-onsemi 0:098463de4c5d 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
group-onsemi 0:098463de4c5d 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
group-onsemi 0:098463de4c5d 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
group-onsemi 0:098463de4c5d 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
group-onsemi 0:098463de4c5d 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
group-onsemi 0:098463de4c5d 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
group-onsemi 0:098463de4c5d 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
group-onsemi 0:098463de4c5d 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
group-onsemi 0:098463de4c5d 28 *******************************************************************************
group-onsemi 0:098463de4c5d 29 */
group-onsemi 0:098463de4c5d 30 #include "pwmout_api.h"
group-onsemi 0:098463de4c5d 31
group-onsemi 0:098463de4c5d 32 #if DEVICE_PWMOUT
group-onsemi 0:098463de4c5d 33
group-onsemi 0:098463de4c5d 34 #include "cmsis.h"
group-onsemi 0:098463de4c5d 35 #include "pinmap.h"
group-onsemi 0:098463de4c5d 36 #include "mbed_error.h"
group-onsemi 0:098463de4c5d 37 #include "PeripheralPins.h"
group-onsemi 0:098463de4c5d 38
group-onsemi 0:098463de4c5d 39 static TIM_HandleTypeDef TimHandle;
group-onsemi 0:098463de4c5d 40
group-onsemi 0:098463de4c5d 41 void pwmout_init(pwmout_t* obj, PinName pin)
group-onsemi 0:098463de4c5d 42 {
group-onsemi 0:098463de4c5d 43 // Get the peripheral name from the pin and assign it to the object
group-onsemi 0:098463de4c5d 44 obj->pwm = (PWMName)pinmap_peripheral(pin, PinMap_PWM);
group-onsemi 0:098463de4c5d 45 MBED_ASSERT(obj->pwm != (PWMName)NC);
group-onsemi 0:098463de4c5d 46
group-onsemi 0:098463de4c5d 47 // Get the pin function and assign the used channel to the object
group-onsemi 0:098463de4c5d 48 uint32_t function = pinmap_function(pin, PinMap_PWM);
group-onsemi 0:098463de4c5d 49 MBED_ASSERT(function != (uint32_t)NC);
group-onsemi 0:098463de4c5d 50 obj->channel = STM_PIN_CHANNEL(function);
group-onsemi 0:098463de4c5d 51 obj->inverted = STM_PIN_INVERTED(function);
group-onsemi 0:098463de4c5d 52
group-onsemi 0:098463de4c5d 53 #if defined(TIM1_BASE)
group-onsemi 0:098463de4c5d 54 if (obj->pwm == PWM_1) __HAL_RCC_TIM1_CLK_ENABLE();
group-onsemi 0:098463de4c5d 55 #endif
group-onsemi 0:098463de4c5d 56 #if defined(TIM2_BASE)
group-onsemi 0:098463de4c5d 57 if (obj->pwm == PWM_2) __HAL_RCC_TIM2_CLK_ENABLE();
group-onsemi 0:098463de4c5d 58 #endif
group-onsemi 0:098463de4c5d 59 #if defined(TIM3_BASE)
group-onsemi 0:098463de4c5d 60 if (obj->pwm == PWM_3) __HAL_RCC_TIM3_CLK_ENABLE();
group-onsemi 0:098463de4c5d 61 #endif
group-onsemi 0:098463de4c5d 62 #if defined(TIM4_BASE)
group-onsemi 0:098463de4c5d 63 if (obj->pwm == PWM_4) __HAL_RCC_TIM4_CLK_ENABLE();
group-onsemi 0:098463de4c5d 64 #endif
group-onsemi 0:098463de4c5d 65 #if defined(TIM5_BASE)
group-onsemi 0:098463de4c5d 66 if (obj->pwm == PWM_5) __HAL_RCC_TIM5_CLK_ENABLE();
group-onsemi 0:098463de4c5d 67 #endif
group-onsemi 0:098463de4c5d 68 #if defined(TIM8_BASE)
group-onsemi 0:098463de4c5d 69 if (obj->pwm == PWM_8) __HAL_RCC_TIM8_CLK_ENABLE();
group-onsemi 0:098463de4c5d 70 #endif
group-onsemi 0:098463de4c5d 71 #if defined(TIM9_BASE)
group-onsemi 0:098463de4c5d 72 if (obj->pwm == PWM_9) __HAL_RCC_TIM9_CLK_ENABLE();
group-onsemi 0:098463de4c5d 73 #endif
group-onsemi 0:098463de4c5d 74 #if defined(TIM10_BASE)
group-onsemi 0:098463de4c5d 75 if (obj->pwm == PWM_10) __HAL_RCC_TIM10_CLK_ENABLE();
group-onsemi 0:098463de4c5d 76 #endif
group-onsemi 0:098463de4c5d 77 #if defined(TIM11_BASE)
group-onsemi 0:098463de4c5d 78 if (obj->pwm == PWM_11) __HAL_RCC_TIM11_CLK_ENABLE();
group-onsemi 0:098463de4c5d 79 #endif
group-onsemi 0:098463de4c5d 80 #if defined(TIM12_BASE)
group-onsemi 0:098463de4c5d 81 if (obj->pwm == PWM_12) __HAL_RCC_TIM12_CLK_ENABLE();
group-onsemi 0:098463de4c5d 82 #endif
group-onsemi 0:098463de4c5d 83 #if defined(TIM13_BASE)
group-onsemi 0:098463de4c5d 84 if (obj->pwm == PWM_13) __HAL_RCC_TIM13_CLK_ENABLE();
group-onsemi 0:098463de4c5d 85 #endif
group-onsemi 0:098463de4c5d 86 #if defined(TIM14_BASE)
group-onsemi 0:098463de4c5d 87 if (obj->pwm == PWM_14) __HAL_RCC_TIM14_CLK_ENABLE();
group-onsemi 0:098463de4c5d 88 #endif
group-onsemi 0:098463de4c5d 89 #if defined(TIM15_BASE)
group-onsemi 0:098463de4c5d 90 if (obj->pwm == PWM_15) __HAL_RCC_TIM15_CLK_ENABLE();
group-onsemi 0:098463de4c5d 91 #endif
group-onsemi 0:098463de4c5d 92 #if defined(TIM16_BASE)
group-onsemi 0:098463de4c5d 93 if (obj->pwm == PWM_16) __HAL_RCC_TIM16_CLK_ENABLE();
group-onsemi 0:098463de4c5d 94 #endif
group-onsemi 0:098463de4c5d 95 #if defined(TIM17_BASE)
group-onsemi 0:098463de4c5d 96 if (obj->pwm == PWM_17) __HAL_RCC_TIM17_CLK_ENABLE();
group-onsemi 0:098463de4c5d 97 #endif
group-onsemi 0:098463de4c5d 98 #if defined(TIM18_BASE)
group-onsemi 0:098463de4c5d 99 if (obj->pwm == PWM_18) __HAL_RCC_TIM18_CLK_ENABLE();
group-onsemi 0:098463de4c5d 100 #endif
group-onsemi 0:098463de4c5d 101 #if defined(TIM19_BASE)
group-onsemi 0:098463de4c5d 102 if (obj->pwm == PWM_19) __HAL_RCC_TIM19_CLK_ENABLE();
group-onsemi 0:098463de4c5d 103 #endif
group-onsemi 0:098463de4c5d 104 #if defined(TIM20_BASE)
group-onsemi 0:098463de4c5d 105 if (obj->pwm == PWM_20) __HAL_RCC_TIM20_CLK_ENABLE();
group-onsemi 0:098463de4c5d 106 #endif
group-onsemi 0:098463de4c5d 107
group-onsemi 0:098463de4c5d 108 // Configure GPIO
group-onsemi 0:098463de4c5d 109 pinmap_pinout(pin, PinMap_PWM);
group-onsemi 0:098463de4c5d 110
group-onsemi 0:098463de4c5d 111 obj->pin = pin;
group-onsemi 0:098463de4c5d 112 obj->period = 0;
group-onsemi 0:098463de4c5d 113 obj->pulse = 0;
group-onsemi 0:098463de4c5d 114 obj->prescaler = 1;
group-onsemi 0:098463de4c5d 115
group-onsemi 0:098463de4c5d 116 pwmout_period_us(obj, 20000); // 20 ms per default
group-onsemi 0:098463de4c5d 117 }
group-onsemi 0:098463de4c5d 118
group-onsemi 0:098463de4c5d 119 void pwmout_free(pwmout_t* obj)
group-onsemi 0:098463de4c5d 120 {
group-onsemi 0:098463de4c5d 121 // Configure GPIO
group-onsemi 0:098463de4c5d 122 pin_function(obj->pin, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
group-onsemi 0:098463de4c5d 123 }
group-onsemi 0:098463de4c5d 124
group-onsemi 0:098463de4c5d 125 void pwmout_write(pwmout_t* obj, float value)
group-onsemi 0:098463de4c5d 126 {
group-onsemi 0:098463de4c5d 127 TIM_OC_InitTypeDef sConfig;
group-onsemi 0:098463de4c5d 128 int channel = 0;
group-onsemi 0:098463de4c5d 129
group-onsemi 0:098463de4c5d 130 TimHandle.Instance = (TIM_TypeDef *)(obj->pwm);
group-onsemi 0:098463de4c5d 131
group-onsemi 0:098463de4c5d 132 if (value < (float)0.0) {
group-onsemi 0:098463de4c5d 133 value = 0.0;
group-onsemi 0:098463de4c5d 134 } else if (value > (float)1.0) {
group-onsemi 0:098463de4c5d 135 value = 1.0;
group-onsemi 0:098463de4c5d 136 }
group-onsemi 0:098463de4c5d 137
group-onsemi 0:098463de4c5d 138 obj->pulse = (uint32_t)((float)obj->period * value);
group-onsemi 0:098463de4c5d 139
group-onsemi 0:098463de4c5d 140 // Configure channels
group-onsemi 0:098463de4c5d 141 sConfig.OCMode = TIM_OCMODE_PWM1;
group-onsemi 0:098463de4c5d 142 sConfig.Pulse = obj->pulse / obj->prescaler;
group-onsemi 0:098463de4c5d 143 sConfig.OCPolarity = TIM_OCPOLARITY_HIGH;
group-onsemi 0:098463de4c5d 144 sConfig.OCNPolarity = TIM_OCNPOLARITY_HIGH;
group-onsemi 0:098463de4c5d 145 sConfig.OCFastMode = TIM_OCFAST_DISABLE;
group-onsemi 0:098463de4c5d 146 sConfig.OCIdleState = TIM_OCIDLESTATE_RESET;
group-onsemi 0:098463de4c5d 147 sConfig.OCNIdleState = TIM_OCNIDLESTATE_RESET;
group-onsemi 0:098463de4c5d 148
group-onsemi 0:098463de4c5d 149 switch (obj->channel) {
group-onsemi 0:098463de4c5d 150 case 1:
group-onsemi 0:098463de4c5d 151 channel = TIM_CHANNEL_1;
group-onsemi 0:098463de4c5d 152 break;
group-onsemi 0:098463de4c5d 153 case 2:
group-onsemi 0:098463de4c5d 154 channel = TIM_CHANNEL_2;
group-onsemi 0:098463de4c5d 155 break;
group-onsemi 0:098463de4c5d 156 case 3:
group-onsemi 0:098463de4c5d 157 channel = TIM_CHANNEL_3;
group-onsemi 0:098463de4c5d 158 break;
group-onsemi 0:098463de4c5d 159 case 4:
group-onsemi 0:098463de4c5d 160 channel = TIM_CHANNEL_4;
group-onsemi 0:098463de4c5d 161 break;
group-onsemi 0:098463de4c5d 162 default:
group-onsemi 0:098463de4c5d 163 return;
group-onsemi 0:098463de4c5d 164 }
group-onsemi 0:098463de4c5d 165
group-onsemi 0:098463de4c5d 166 if (HAL_TIM_PWM_ConfigChannel(&TimHandle, &sConfig, channel) != HAL_OK) {
group-onsemi 0:098463de4c5d 167 error("Cannot initialize PWM");
group-onsemi 0:098463de4c5d 168 }
group-onsemi 0:098463de4c5d 169
group-onsemi 0:098463de4c5d 170 if (obj->inverted) {
group-onsemi 0:098463de4c5d 171 HAL_TIMEx_PWMN_Start(&TimHandle, channel);
group-onsemi 0:098463de4c5d 172 } else {
group-onsemi 0:098463de4c5d 173 HAL_TIM_PWM_Start(&TimHandle, channel);
group-onsemi 0:098463de4c5d 174 }
group-onsemi 0:098463de4c5d 175 }
group-onsemi 0:098463de4c5d 176
group-onsemi 0:098463de4c5d 177 float pwmout_read(pwmout_t* obj)
group-onsemi 0:098463de4c5d 178 {
group-onsemi 0:098463de4c5d 179 float value = 0;
group-onsemi 0:098463de4c5d 180 if (obj->period > 0) {
group-onsemi 0:098463de4c5d 181 value = (float)(obj->pulse) / (float)(obj->period);
group-onsemi 0:098463de4c5d 182 }
group-onsemi 0:098463de4c5d 183 return ((value > (float)1.0) ? (float)(1.0) : (value));
group-onsemi 0:098463de4c5d 184 }
group-onsemi 0:098463de4c5d 185
group-onsemi 0:098463de4c5d 186 void pwmout_period(pwmout_t* obj, float seconds)
group-onsemi 0:098463de4c5d 187 {
group-onsemi 0:098463de4c5d 188 pwmout_period_us(obj, seconds * 1000000.0f);
group-onsemi 0:098463de4c5d 189 }
group-onsemi 0:098463de4c5d 190
group-onsemi 0:098463de4c5d 191 void pwmout_period_ms(pwmout_t* obj, int ms)
group-onsemi 0:098463de4c5d 192 {
group-onsemi 0:098463de4c5d 193 pwmout_period_us(obj, ms * 1000);
group-onsemi 0:098463de4c5d 194 }
group-onsemi 0:098463de4c5d 195
group-onsemi 0:098463de4c5d 196 void pwmout_period_us(pwmout_t* obj, int us)
group-onsemi 0:098463de4c5d 197 {
group-onsemi 0:098463de4c5d 198 TimHandle.Instance = (TIM_TypeDef *)(obj->pwm);
group-onsemi 0:098463de4c5d 199
group-onsemi 0:098463de4c5d 200 float dc = pwmout_read(obj);
group-onsemi 0:098463de4c5d 201
group-onsemi 0:098463de4c5d 202 __HAL_TIM_DISABLE(&TimHandle);
group-onsemi 0:098463de4c5d 203
group-onsemi 0:098463de4c5d 204 // Update the SystemCoreClock variable
group-onsemi 0:098463de4c5d 205 SystemCoreClockUpdate();
group-onsemi 0:098463de4c5d 206
group-onsemi 0:098463de4c5d 207 /* To make it simple, we use to possible prescaler values which lead to:
group-onsemi 0:098463de4c5d 208 * pwm unit = 1us, period/pulse can be from 1us to 65535us
group-onsemi 0:098463de4c5d 209 * or
group-onsemi 0:098463de4c5d 210 * pwm unit = 500us, period/pulse can be from 500us to ~32.76sec
group-onsemi 0:098463de4c5d 211 * Be careful that all the channels of a PWM shares the same prescaler
group-onsemi 0:098463de4c5d 212 */
group-onsemi 0:098463de4c5d 213 if (us > 0xFFFF) {
group-onsemi 0:098463de4c5d 214 obj->prescaler = 500;
group-onsemi 0:098463de4c5d 215 } else {
group-onsemi 0:098463de4c5d 216 obj->prescaler = 1;
group-onsemi 0:098463de4c5d 217 }
group-onsemi 0:098463de4c5d 218 TimHandle.Init.Prescaler = ((SystemCoreClock / 1000000) * obj->prescaler) - 1;
group-onsemi 0:098463de4c5d 219
group-onsemi 0:098463de4c5d 220 if (TimHandle.Init.Prescaler > 0xFFFF)
group-onsemi 0:098463de4c5d 221 error("PWM: out of range prescaler");
group-onsemi 0:098463de4c5d 222
group-onsemi 0:098463de4c5d 223 TimHandle.Init.Period = (us - 1) / obj->prescaler;
group-onsemi 0:098463de4c5d 224 if (TimHandle.Init.Period > 0xFFFF)
group-onsemi 0:098463de4c5d 225 error("PWM: out of range period");
group-onsemi 0:098463de4c5d 226
group-onsemi 0:098463de4c5d 227 TimHandle.Init.ClockDivision = 0;
group-onsemi 0:098463de4c5d 228 TimHandle.Init.CounterMode = TIM_COUNTERMODE_UP;
group-onsemi 0:098463de4c5d 229
group-onsemi 0:098463de4c5d 230 if (HAL_TIM_PWM_Init(&TimHandle) != HAL_OK) {
group-onsemi 0:098463de4c5d 231 error("Cannot initialize PWM");
group-onsemi 0:098463de4c5d 232 }
group-onsemi 0:098463de4c5d 233
group-onsemi 0:098463de4c5d 234 // Save for future use
group-onsemi 0:098463de4c5d 235 obj->period = us;
group-onsemi 0:098463de4c5d 236
group-onsemi 0:098463de4c5d 237 // Set duty cycle again
group-onsemi 0:098463de4c5d 238 pwmout_write(obj, dc);
group-onsemi 0:098463de4c5d 239
group-onsemi 0:098463de4c5d 240 __HAL_TIM_ENABLE(&TimHandle);
group-onsemi 0:098463de4c5d 241 }
group-onsemi 0:098463de4c5d 242
group-onsemi 0:098463de4c5d 243 void pwmout_pulsewidth(pwmout_t* obj, float seconds)
group-onsemi 0:098463de4c5d 244 {
group-onsemi 0:098463de4c5d 245 pwmout_pulsewidth_us(obj, seconds * 1000000.0f);
group-onsemi 0:098463de4c5d 246 }
group-onsemi 0:098463de4c5d 247
group-onsemi 0:098463de4c5d 248 void pwmout_pulsewidth_ms(pwmout_t* obj, int ms)
group-onsemi 0:098463de4c5d 249 {
group-onsemi 0:098463de4c5d 250 pwmout_pulsewidth_us(obj, ms * 1000);
group-onsemi 0:098463de4c5d 251 }
group-onsemi 0:098463de4c5d 252
group-onsemi 0:098463de4c5d 253 void pwmout_pulsewidth_us(pwmout_t* obj, int us)
group-onsemi 0:098463de4c5d 254 {
group-onsemi 0:098463de4c5d 255 float value = (float)us / (float)obj->period;
group-onsemi 0:098463de4c5d 256 pwmout_write(obj, value);
group-onsemi 0:098463de4c5d 257 }
group-onsemi 0:098463de4c5d 258
group-onsemi 0:098463de4c5d 259 #endif