mbed library sources
Fork of mbed-src by
targets/hal/TARGET_STM/TARGET_STM32F411RE/pwmout_api.c@429:cc5da43e7bf6, 2014-12-09 (annotated)
- Committer:
- mbed_official
- Date:
- Tue Dec 09 14:15:07 2014 +0000
- Revision:
- 429:cc5da43e7bf6
- Parent:
- targets/hal/TARGET_STM/TARGET_NUCLEO_F411RE/pwmout_api.c@406:7b834b41c730
Synchronized with git revision 75673df767b901eda5c6ea6c737b58deb390c955
Full URL: https://github.com/mbedmicro/mbed/commit/75673df767b901eda5c6ea6c737b58deb390c955/
Add support for mDot with STM32F411RE processor
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
mbed_official | 235:685d5f11838f | 1 | /* mbed Microcontroller Library |
mbed_official | 235:685d5f11838f | 2 | ******************************************************************************* |
mbed_official | 235:685d5f11838f | 3 | * Copyright (c) 2014, STMicroelectronics |
mbed_official | 235:685d5f11838f | 4 | * All rights reserved. |
mbed_official | 235:685d5f11838f | 5 | * |
mbed_official | 235:685d5f11838f | 6 | * Redistribution and use in source and binary forms, with or without |
mbed_official | 235:685d5f11838f | 7 | * modification, are permitted provided that the following conditions are met: |
mbed_official | 235:685d5f11838f | 8 | * |
mbed_official | 235:685d5f11838f | 9 | * 1. Redistributions of source code must retain the above copyright notice, |
mbed_official | 235:685d5f11838f | 10 | * this list of conditions and the following disclaimer. |
mbed_official | 235:685d5f11838f | 11 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
mbed_official | 235:685d5f11838f | 12 | * this list of conditions and the following disclaimer in the documentation |
mbed_official | 235:685d5f11838f | 13 | * and/or other materials provided with the distribution. |
mbed_official | 235:685d5f11838f | 14 | * 3. Neither the name of STMicroelectronics nor the names of its contributors |
mbed_official | 235:685d5f11838f | 15 | * may be used to endorse or promote products derived from this software |
mbed_official | 235:685d5f11838f | 16 | * without specific prior written permission. |
mbed_official | 235:685d5f11838f | 17 | * |
mbed_official | 235:685d5f11838f | 18 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
mbed_official | 235:685d5f11838f | 19 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
mbed_official | 235:685d5f11838f | 20 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
mbed_official | 235:685d5f11838f | 21 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
mbed_official | 235:685d5f11838f | 22 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
mbed_official | 235:685d5f11838f | 23 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
mbed_official | 235:685d5f11838f | 24 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
mbed_official | 235:685d5f11838f | 25 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
mbed_official | 235:685d5f11838f | 26 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
mbed_official | 235:685d5f11838f | 27 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
mbed_official | 235:685d5f11838f | 28 | ******************************************************************************* |
mbed_official | 235:685d5f11838f | 29 | */ |
mbed_official | 235:685d5f11838f | 30 | #include "pwmout_api.h" |
mbed_official | 235:685d5f11838f | 31 | |
mbed_official | 235:685d5f11838f | 32 | #if DEVICE_PWMOUT |
mbed_official | 235:685d5f11838f | 33 | |
mbed_official | 235:685d5f11838f | 34 | #include "cmsis.h" |
mbed_official | 235:685d5f11838f | 35 | #include "pinmap.h" |
mbed_official | 285:31249416b6f9 | 36 | #include "mbed_error.h" |
mbed_official | 406:7b834b41c730 | 37 | #include "PeripheralPins.h" |
mbed_official | 235:685d5f11838f | 38 | |
mbed_official | 235:685d5f11838f | 39 | static TIM_HandleTypeDef TimHandle; |
mbed_official | 235:685d5f11838f | 40 | |
mbed_official | 235:685d5f11838f | 41 | void pwmout_init(pwmout_t* obj, PinName pin) |
mbed_official | 235:685d5f11838f | 42 | { |
mbed_official | 235:685d5f11838f | 43 | // Get the peripheral name from the pin and assign it to the object |
mbed_official | 235:685d5f11838f | 44 | obj->pwm = (PWMName)pinmap_peripheral(pin, PinMap_PWM); |
mbed_official | 235:685d5f11838f | 45 | |
mbed_official | 235:685d5f11838f | 46 | if (obj->pwm == (PWMName)NC) { |
mbed_official | 235:685d5f11838f | 47 | error("PWM error: pinout mapping failed."); |
mbed_official | 235:685d5f11838f | 48 | } |
mbed_official | 235:685d5f11838f | 49 | |
mbed_official | 235:685d5f11838f | 50 | // Enable TIM clock |
mbed_official | 235:685d5f11838f | 51 | if (obj->pwm == PWM_1) __TIM1_CLK_ENABLE(); |
mbed_official | 235:685d5f11838f | 52 | if (obj->pwm == PWM_2) __TIM2_CLK_ENABLE(); |
mbed_official | 235:685d5f11838f | 53 | if (obj->pwm == PWM_3) __TIM3_CLK_ENABLE(); |
mbed_official | 235:685d5f11838f | 54 | if (obj->pwm == PWM_4) __TIM4_CLK_ENABLE(); |
mbed_official | 235:685d5f11838f | 55 | if (obj->pwm == PWM_9) __TIM9_CLK_ENABLE(); |
mbed_official | 235:685d5f11838f | 56 | if (obj->pwm == PWM_10) __TIM10_CLK_ENABLE(); |
mbed_official | 235:685d5f11838f | 57 | if (obj->pwm == PWM_11) __TIM11_CLK_ENABLE(); |
mbed_official | 235:685d5f11838f | 58 | |
mbed_official | 235:685d5f11838f | 59 | // Configure GPIO |
mbed_official | 235:685d5f11838f | 60 | pinmap_pinout(pin, PinMap_PWM); |
mbed_official | 235:685d5f11838f | 61 | |
mbed_official | 235:685d5f11838f | 62 | obj->pin = pin; |
mbed_official | 235:685d5f11838f | 63 | obj->period = 0; |
mbed_official | 235:685d5f11838f | 64 | obj->pulse = 0; |
mbed_official | 235:685d5f11838f | 65 | |
mbed_official | 235:685d5f11838f | 66 | pwmout_period_us(obj, 20000); // 20 ms per default |
mbed_official | 235:685d5f11838f | 67 | } |
mbed_official | 235:685d5f11838f | 68 | |
mbed_official | 235:685d5f11838f | 69 | void pwmout_free(pwmout_t* obj) |
mbed_official | 235:685d5f11838f | 70 | { |
mbed_official | 235:685d5f11838f | 71 | // Configure GPIO |
mbed_official | 235:685d5f11838f | 72 | pin_function(obj->pin, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0)); |
mbed_official | 235:685d5f11838f | 73 | } |
mbed_official | 235:685d5f11838f | 74 | |
mbed_official | 235:685d5f11838f | 75 | void pwmout_write(pwmout_t* obj, float value) |
mbed_official | 235:685d5f11838f | 76 | { |
mbed_official | 235:685d5f11838f | 77 | TIM_OC_InitTypeDef sConfig; |
mbed_official | 235:685d5f11838f | 78 | int channel = 0; |
mbed_official | 235:685d5f11838f | 79 | int complementary_channel = 0; |
mbed_official | 235:685d5f11838f | 80 | |
mbed_official | 235:685d5f11838f | 81 | TimHandle.Instance = (TIM_TypeDef *)(obj->pwm); |
mbed_official | 235:685d5f11838f | 82 | |
mbed_official | 235:685d5f11838f | 83 | if (value < (float)0.0) { |
mbed_official | 235:685d5f11838f | 84 | value = 0.0; |
mbed_official | 235:685d5f11838f | 85 | } else if (value > (float)1.0) { |
mbed_official | 235:685d5f11838f | 86 | value = 1.0; |
mbed_official | 235:685d5f11838f | 87 | } |
mbed_official | 235:685d5f11838f | 88 | |
mbed_official | 235:685d5f11838f | 89 | obj->pulse = (uint32_t)((float)obj->period * value); |
mbed_official | 235:685d5f11838f | 90 | |
mbed_official | 235:685d5f11838f | 91 | // Configure channels |
mbed_official | 235:685d5f11838f | 92 | sConfig.OCMode = TIM_OCMODE_PWM1; |
mbed_official | 235:685d5f11838f | 93 | sConfig.Pulse = obj->pulse; |
mbed_official | 235:685d5f11838f | 94 | sConfig.OCPolarity = TIM_OCPOLARITY_HIGH; |
mbed_official | 235:685d5f11838f | 95 | sConfig.OCNPolarity = TIM_OCNPOLARITY_HIGH; |
mbed_official | 235:685d5f11838f | 96 | sConfig.OCFastMode = TIM_OCFAST_DISABLE; |
mbed_official | 235:685d5f11838f | 97 | sConfig.OCIdleState = TIM_OCIDLESTATE_RESET; |
mbed_official | 235:685d5f11838f | 98 | sConfig.OCNIdleState = TIM_OCNIDLESTATE_RESET; |
mbed_official | 235:685d5f11838f | 99 | |
mbed_official | 235:685d5f11838f | 100 | switch (obj->pin) { |
mbed_official | 235:685d5f11838f | 101 | |
mbed_official | 235:685d5f11838f | 102 | // Channels 1 |
mbed_official | 235:685d5f11838f | 103 | case PA_0: |
mbed_official | 235:685d5f11838f | 104 | case PA_5: |
mbed_official | 235:685d5f11838f | 105 | case PA_6: |
mbed_official | 235:685d5f11838f | 106 | case PA_8: |
mbed_official | 235:685d5f11838f | 107 | case PA_15: |
mbed_official | 235:685d5f11838f | 108 | case PB_4: |
mbed_official | 235:685d5f11838f | 109 | case PB_6: |
mbed_official | 235:685d5f11838f | 110 | case PC_6: |
mbed_official | 235:685d5f11838f | 111 | channel = TIM_CHANNEL_1; |
mbed_official | 235:685d5f11838f | 112 | break; |
mbed_official | 235:685d5f11838f | 113 | |
mbed_official | 235:685d5f11838f | 114 | // Channels 1N |
mbed_official | 235:685d5f11838f | 115 | case PA_7: |
mbed_official | 235:685d5f11838f | 116 | case PB_13: |
mbed_official | 235:685d5f11838f | 117 | channel = TIM_CHANNEL_1; |
mbed_official | 235:685d5f11838f | 118 | complementary_channel = 1; |
mbed_official | 235:685d5f11838f | 119 | break; |
mbed_official | 235:685d5f11838f | 120 | |
mbed_official | 235:685d5f11838f | 121 | // Channels 2 |
mbed_official | 235:685d5f11838f | 122 | case PA_1: |
mbed_official | 235:685d5f11838f | 123 | case PA_9: |
mbed_official | 235:685d5f11838f | 124 | case PB_3: |
mbed_official | 235:685d5f11838f | 125 | case PB_5: |
mbed_official | 235:685d5f11838f | 126 | case PB_7: |
mbed_official | 235:685d5f11838f | 127 | case PC_7: |
mbed_official | 235:685d5f11838f | 128 | channel = TIM_CHANNEL_2; |
mbed_official | 235:685d5f11838f | 129 | break; |
mbed_official | 235:685d5f11838f | 130 | |
mbed_official | 235:685d5f11838f | 131 | // Channels 2N |
mbed_official | 235:685d5f11838f | 132 | case PB_0: |
mbed_official | 235:685d5f11838f | 133 | case PB_14: |
mbed_official | 235:685d5f11838f | 134 | channel = TIM_CHANNEL_2; |
mbed_official | 235:685d5f11838f | 135 | complementary_channel = 1; |
mbed_official | 235:685d5f11838f | 136 | break; |
mbed_official | 235:685d5f11838f | 137 | |
mbed_official | 235:685d5f11838f | 138 | // Channels 3 |
mbed_official | 235:685d5f11838f | 139 | case PA_2: |
mbed_official | 235:685d5f11838f | 140 | case PA_10: |
mbed_official | 235:685d5f11838f | 141 | case PB_8: |
mbed_official | 235:685d5f11838f | 142 | case PB_10: |
mbed_official | 235:685d5f11838f | 143 | case PC_8: |
mbed_official | 235:685d5f11838f | 144 | channel = TIM_CHANNEL_3; |
mbed_official | 235:685d5f11838f | 145 | break; |
mbed_official | 235:685d5f11838f | 146 | |
mbed_official | 235:685d5f11838f | 147 | // Channels 3N |
mbed_official | 235:685d5f11838f | 148 | case PB_1: |
mbed_official | 235:685d5f11838f | 149 | case PB_15: |
mbed_official | 235:685d5f11838f | 150 | channel = TIM_CHANNEL_3; |
mbed_official | 235:685d5f11838f | 151 | complementary_channel = 1; |
mbed_official | 235:685d5f11838f | 152 | break; |
mbed_official | 235:685d5f11838f | 153 | |
mbed_official | 235:685d5f11838f | 154 | // Channels 4 |
mbed_official | 235:685d5f11838f | 155 | case PA_3: |
mbed_official | 235:685d5f11838f | 156 | case PA_11: |
mbed_official | 235:685d5f11838f | 157 | case PB_9: |
mbed_official | 235:685d5f11838f | 158 | case PC_9: |
mbed_official | 235:685d5f11838f | 159 | channel = TIM_CHANNEL_4; |
mbed_official | 235:685d5f11838f | 160 | break; |
mbed_official | 235:685d5f11838f | 161 | |
mbed_official | 235:685d5f11838f | 162 | default: |
mbed_official | 235:685d5f11838f | 163 | return; |
mbed_official | 235:685d5f11838f | 164 | } |
mbed_official | 235:685d5f11838f | 165 | |
mbed_official | 235:685d5f11838f | 166 | HAL_TIM_PWM_ConfigChannel(&TimHandle, &sConfig, channel); |
mbed_official | 235:685d5f11838f | 167 | if (complementary_channel) { |
mbed_official | 235:685d5f11838f | 168 | HAL_TIMEx_PWMN_Start(&TimHandle, channel); |
mbed_official | 235:685d5f11838f | 169 | } else { |
mbed_official | 235:685d5f11838f | 170 | HAL_TIM_PWM_Start(&TimHandle, channel); |
mbed_official | 235:685d5f11838f | 171 | } |
mbed_official | 235:685d5f11838f | 172 | } |
mbed_official | 235:685d5f11838f | 173 | |
mbed_official | 235:685d5f11838f | 174 | float pwmout_read(pwmout_t* obj) |
mbed_official | 235:685d5f11838f | 175 | { |
mbed_official | 235:685d5f11838f | 176 | float value = 0; |
mbed_official | 235:685d5f11838f | 177 | if (obj->period > 0) { |
mbed_official | 235:685d5f11838f | 178 | value = (float)(obj->pulse) / (float)(obj->period); |
mbed_official | 235:685d5f11838f | 179 | } |
mbed_official | 235:685d5f11838f | 180 | return ((value > (float)1.0) ? (float)(1.0) : (value)); |
mbed_official | 235:685d5f11838f | 181 | } |
mbed_official | 235:685d5f11838f | 182 | |
mbed_official | 235:685d5f11838f | 183 | void pwmout_period(pwmout_t* obj, float seconds) |
mbed_official | 235:685d5f11838f | 184 | { |
mbed_official | 235:685d5f11838f | 185 | pwmout_period_us(obj, seconds * 1000000.0f); |
mbed_official | 235:685d5f11838f | 186 | } |
mbed_official | 235:685d5f11838f | 187 | |
mbed_official | 235:685d5f11838f | 188 | void pwmout_period_ms(pwmout_t* obj, int ms) |
mbed_official | 235:685d5f11838f | 189 | { |
mbed_official | 235:685d5f11838f | 190 | pwmout_period_us(obj, ms * 1000); |
mbed_official | 235:685d5f11838f | 191 | } |
mbed_official | 235:685d5f11838f | 192 | |
mbed_official | 235:685d5f11838f | 193 | void pwmout_period_us(pwmout_t* obj, int us) |
mbed_official | 235:685d5f11838f | 194 | { |
mbed_official | 235:685d5f11838f | 195 | TimHandle.Instance = (TIM_TypeDef *)(obj->pwm); |
mbed_official | 235:685d5f11838f | 196 | |
mbed_official | 235:685d5f11838f | 197 | float dc = pwmout_read(obj); |
mbed_official | 235:685d5f11838f | 198 | |
mbed_official | 235:685d5f11838f | 199 | __HAL_TIM_DISABLE(&TimHandle); |
mbed_official | 235:685d5f11838f | 200 | |
mbed_official | 235:685d5f11838f | 201 | // Update the SystemCoreClock variable |
mbed_official | 235:685d5f11838f | 202 | SystemCoreClockUpdate(); |
mbed_official | 235:685d5f11838f | 203 | |
mbed_official | 235:685d5f11838f | 204 | TimHandle.Init.Period = us - 1; |
mbed_official | 235:685d5f11838f | 205 | TimHandle.Init.Prescaler = (uint16_t)(SystemCoreClock / 1000000) - 1; // 1 µs tick |
mbed_official | 235:685d5f11838f | 206 | TimHandle.Init.ClockDivision = 0; |
mbed_official | 235:685d5f11838f | 207 | TimHandle.Init.CounterMode = TIM_COUNTERMODE_UP; |
mbed_official | 235:685d5f11838f | 208 | HAL_TIM_PWM_Init(&TimHandle); |
mbed_official | 235:685d5f11838f | 209 | |
mbed_official | 235:685d5f11838f | 210 | // Set duty cycle again |
mbed_official | 235:685d5f11838f | 211 | pwmout_write(obj, dc); |
mbed_official | 235:685d5f11838f | 212 | |
mbed_official | 235:685d5f11838f | 213 | // Save for future use |
mbed_official | 235:685d5f11838f | 214 | obj->period = us; |
mbed_official | 235:685d5f11838f | 215 | |
mbed_official | 235:685d5f11838f | 216 | __HAL_TIM_ENABLE(&TimHandle); |
mbed_official | 235:685d5f11838f | 217 | } |
mbed_official | 235:685d5f11838f | 218 | |
mbed_official | 235:685d5f11838f | 219 | void pwmout_pulsewidth(pwmout_t* obj, float seconds) |
mbed_official | 235:685d5f11838f | 220 | { |
mbed_official | 235:685d5f11838f | 221 | pwmout_pulsewidth_us(obj, seconds * 1000000.0f); |
mbed_official | 235:685d5f11838f | 222 | } |
mbed_official | 235:685d5f11838f | 223 | |
mbed_official | 235:685d5f11838f | 224 | void pwmout_pulsewidth_ms(pwmout_t* obj, int ms) |
mbed_official | 235:685d5f11838f | 225 | { |
mbed_official | 235:685d5f11838f | 226 | pwmout_pulsewidth_us(obj, ms * 1000); |
mbed_official | 235:685d5f11838f | 227 | } |
mbed_official | 235:685d5f11838f | 228 | |
mbed_official | 235:685d5f11838f | 229 | void pwmout_pulsewidth_us(pwmout_t* obj, int us) |
mbed_official | 235:685d5f11838f | 230 | { |
mbed_official | 235:685d5f11838f | 231 | float value = (float)us / (float)obj->period; |
mbed_official | 235:685d5f11838f | 232 | pwmout_write(obj, value); |
mbed_official | 235:685d5f11838f | 233 | } |
mbed_official | 235:685d5f11838f | 234 | |
mbed_official | 235:685d5f11838f | 235 | #endif |