mirror of https://github.com/ARMmbed/mbed-os.git
[NUCLEO_F030R8] reorg hal folder
ohagendorf
parent
2942309fd4
commit
aadd0bcb13
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@ -1,206 +0,0 @@
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/* mbed Microcontroller Library
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*******************************************************************************
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* Copyright (c) 2014, STMicroelectronics
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
|
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. Neither the name of STMicroelectronics nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*******************************************************************************
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*/
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#include "pwmout_api.h"
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#if DEVICE_PWMOUT
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#include "cmsis.h"
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#include "pinmap.h"
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#include "mbed_error.h"
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#include "PeripheralPins.h"
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static TIM_HandleTypeDef TimHandle;
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void pwmout_init(pwmout_t* obj, PinName pin)
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{
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// Get the peripheral name from the pin and assign it to the object
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obj->pwm = (PWMName)pinmap_peripheral(pin, PinMap_PWM);
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if (obj->pwm == (PWMName)NC) {
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error("PWM error: pinout mapping failed.");
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}
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// Enable TIM clock
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if (obj->pwm == PWM_3) __TIM3_CLK_ENABLE();
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if (obj->pwm == PWM_14) __TIM14_CLK_ENABLE();
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if (obj->pwm == PWM_15) __TIM15_CLK_ENABLE();
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if (obj->pwm == PWM_16) __TIM16_CLK_ENABLE();
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if (obj->pwm == PWM_17) __TIM17_CLK_ENABLE();
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// Configure GPIO
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pinmap_pinout(pin, PinMap_PWM);
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obj->pin = pin;
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obj->period = 0;
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obj->pulse = 0;
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pwmout_period_us(obj, 20000); // 20 ms per default
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}
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void pwmout_free(pwmout_t* obj)
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{
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// Configure GPIO
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pin_function(obj->pin, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
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}
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void pwmout_write(pwmout_t* obj, float value)
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{
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TIM_OC_InitTypeDef sConfig;
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int channel = 0;
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int complementary_channel = 0;
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TimHandle.Instance = (TIM_TypeDef *)(obj->pwm);
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if (value < (float)0.0) {
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value = 0.0;
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} else if (value > (float)1.0) {
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value = 1.0;
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}
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obj->pulse = (uint32_t)((float)obj->period * value);
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// Configure channels
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sConfig.OCMode = TIM_OCMODE_PWM1;
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sConfig.Pulse = obj->pulse;
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sConfig.OCPolarity = TIM_OCPOLARITY_HIGH;
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sConfig.OCNPolarity = TIM_OCNPOLARITY_HIGH;
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sConfig.OCFastMode = TIM_OCFAST_DISABLE;
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sConfig.OCIdleState = TIM_OCIDLESTATE_RESET;
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sConfig.OCNIdleState = TIM_OCNIDLESTATE_RESET;
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switch (obj->pin) {
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// Channels 1
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case PA_4:
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case PA_6:
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case PB_1:
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case PB_4:
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case PB_8:
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case PB_9:
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case PB_14:
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case PC_6:
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channel = TIM_CHANNEL_1;
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break;
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// Channels 1N
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case PB_6:
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case PB_7:
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channel = TIM_CHANNEL_1;
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complementary_channel = 1;
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break;
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// Channels 2
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case PA_7:
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case PB_5:
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case PB_15:
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case PC_7:
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channel = TIM_CHANNEL_2;
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break;
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// Channels 3
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case PB_0:
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case PC_8:
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channel = TIM_CHANNEL_3;
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break;
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// Channels 4
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case PC_9:
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channel = TIM_CHANNEL_4;
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break;
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default:
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return;
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}
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HAL_TIM_PWM_ConfigChannel(&TimHandle, &sConfig, channel);
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if (complementary_channel) {
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HAL_TIMEx_PWMN_Start(&TimHandle, channel);
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} else {
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HAL_TIM_PWM_Start(&TimHandle, channel);
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}
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}
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float pwmout_read(pwmout_t* obj)
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{
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float value = 0;
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if (obj->period > 0) {
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value = (float)(obj->pulse) / (float)(obj->period);
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}
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return ((value > (float)1.0) ? (float)(1.0) : (value));
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}
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void pwmout_period(pwmout_t* obj, float seconds)
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{
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pwmout_period_us(obj, seconds * 1000000.0f);
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}
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void pwmout_period_ms(pwmout_t* obj, int ms)
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{
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pwmout_period_us(obj, ms * 1000);
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}
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void pwmout_period_us(pwmout_t* obj, int us)
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{
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TimHandle.Instance = (TIM_TypeDef *)(obj->pwm);
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float dc = pwmout_read(obj);
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__HAL_TIM_DISABLE(&TimHandle);
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// Update the SystemCoreClock variable
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SystemCoreClockUpdate();
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TimHandle.Init.Period = us - 1;
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TimHandle.Init.Prescaler = (uint16_t)(SystemCoreClock / 1000000) - 1; // 1 µs tick
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TimHandle.Init.ClockDivision = 0;
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TimHandle.Init.CounterMode = TIM_COUNTERMODE_UP;
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HAL_TIM_PWM_Init(&TimHandle);
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// Set duty cycle again
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pwmout_write(obj, dc);
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// Save for future use
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obj->period = us;
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__HAL_TIM_ENABLE(&TimHandle);
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}
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void pwmout_pulsewidth(pwmout_t* obj, float seconds)
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{
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pwmout_pulsewidth_us(obj, seconds * 1000000.0f);
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}
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void pwmout_pulsewidth_ms(pwmout_t* obj, int ms)
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{
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pwmout_pulsewidth_us(obj, ms * 1000);
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}
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void pwmout_pulsewidth_us(pwmout_t* obj, int us)
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{
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float value = (float)us / (float)obj->period;
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pwmout_write(obj, value);
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}
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#endif
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@ -1,324 +0,0 @@
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/* mbed Microcontroller Library
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*******************************************************************************
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* Copyright (c) 2014, STMicroelectronics
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. Neither the name of STMicroelectronics nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*******************************************************************************
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*/
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#include "mbed_assert.h"
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#include "serial_api.h"
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#if DEVICE_SERIAL
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#include "cmsis.h"
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#include "pinmap.h"
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#include <string.h>
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#include "PeripheralPins.h"
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#define UART_NUM (2)
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static uint32_t serial_irq_ids[UART_NUM] = {0, 0};
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static uart_irq_handler irq_handler;
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UART_HandleTypeDef UartHandle;
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int stdio_uart_inited = 0;
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serial_t stdio_uart;
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static void init_uart(serial_t *obj)
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{
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UartHandle.Instance = (USART_TypeDef *)(obj->uart);
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UartHandle.Init.BaudRate = obj->baudrate;
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UartHandle.Init.WordLength = obj->databits;
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UartHandle.Init.StopBits = obj->stopbits;
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UartHandle.Init.Parity = obj->parity;
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UartHandle.Init.HwFlowCtl = UART_HWCONTROL_NONE;
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if (obj->pin_rx == NC) {
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UartHandle.Init.Mode = UART_MODE_TX;
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} else if (obj->pin_tx == NC) {
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UartHandle.Init.Mode = UART_MODE_RX;
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} else {
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UartHandle.Init.Mode = UART_MODE_TX_RX;
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}
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// Disable the reception overrun detection
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UartHandle.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_RXOVERRUNDISABLE_INIT;
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UartHandle.AdvancedInit.OverrunDisable = UART_ADVFEATURE_OVERRUN_DISABLE;
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HAL_UART_Init(&UartHandle);
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}
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void serial_init(serial_t *obj, PinName tx, PinName rx)
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{
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// Determine the UART to use (UART_1, UART_2, ...)
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UARTName uart_tx = (UARTName)pinmap_peripheral(tx, PinMap_UART_TX);
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UARTName uart_rx = (UARTName)pinmap_peripheral(rx, PinMap_UART_RX);
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// Get the peripheral name (UART_1, UART_2, ...) from the pin and assign it to the object
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obj->uart = (UARTName)pinmap_merge(uart_tx, uart_rx);
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MBED_ASSERT(obj->uart != (UARTName)NC);
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// Enable USART clock
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if (obj->uart == UART_1) {
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__USART1_CLK_ENABLE();
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obj->index = 0;
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}
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if (obj->uart == UART_2) {
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__USART2_CLK_ENABLE();
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obj->index = 1;
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}
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// Configure the UART pins
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pinmap_pinout(tx, PinMap_UART_TX);
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pinmap_pinout(rx, PinMap_UART_RX);
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if (tx != NC) {
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pin_mode(tx, PullUp);
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}
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if (rx != NC) {
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pin_mode(rx, PullUp);
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}
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// Configure UART
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obj->baudrate = 9600;
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obj->databits = UART_WORDLENGTH_8B;
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obj->stopbits = UART_STOPBITS_1;
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obj->parity = UART_PARITY_NONE;
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obj->pin_tx = tx;
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obj->pin_rx = rx;
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init_uart(obj);
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// For stdio management
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if (obj->uart == STDIO_UART) {
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stdio_uart_inited = 1;
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memcpy(&stdio_uart, obj, sizeof(serial_t));
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}
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}
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void serial_free(serial_t *obj)
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{
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// Reset UART and disable clock
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if (obj->uart == UART_1) {
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__USART1_FORCE_RESET();
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__USART1_RELEASE_RESET();
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__USART1_CLK_DISABLE();
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}
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if (obj->uart == UART_2) {
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__USART2_FORCE_RESET();
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__USART2_RELEASE_RESET();
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__USART2_CLK_DISABLE();
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}
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// Configure GPIOs
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pin_function(obj->pin_tx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
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pin_function(obj->pin_rx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
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serial_irq_ids[obj->index] = 0;
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}
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void serial_baud(serial_t *obj, int baudrate)
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{
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obj->baudrate = baudrate;
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init_uart(obj);
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}
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void serial_format(serial_t *obj, int data_bits, SerialParity parity, int stop_bits)
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{
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if (data_bits == 9) {
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obj->databits = UART_WORDLENGTH_9B;
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} else {
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obj->databits = UART_WORDLENGTH_8B;
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}
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switch (parity) {
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case ParityOdd:
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case ParityForced0:
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obj->parity = UART_PARITY_ODD;
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break;
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case ParityEven:
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case ParityForced1:
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obj->parity = UART_PARITY_EVEN;
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break;
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default: // ParityNone
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obj->parity = UART_PARITY_NONE;
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break;
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}
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if (stop_bits == 2) {
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obj->stopbits = UART_STOPBITS_2;
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} else {
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obj->stopbits = UART_STOPBITS_1;
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}
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init_uart(obj);
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}
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||||||
/******************************************************************************
|
|
||||||
* INTERRUPTS HANDLING
|
|
||||||
******************************************************************************/
|
|
||||||
|
|
||||||
static void uart_irq(UARTName name, int id)
|
|
||||||
{
|
|
||||||
UartHandle.Instance = (USART_TypeDef *)name;
|
|
||||||
if (serial_irq_ids[id] != 0) {
|
|
||||||
if (__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_TC) != RESET) {
|
|
||||||
irq_handler(serial_irq_ids[id], TxIrq);
|
|
||||||
__HAL_UART_CLEAR_IT(&UartHandle, UART_FLAG_TC);
|
|
||||||
}
|
|
||||||
if (__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_RXNE) != RESET) {
|
|
||||||
irq_handler(serial_irq_ids[id], RxIrq);
|
|
||||||
volatile uint32_t tmpval = UartHandle.Instance->RDR; // Clear RXNE bit
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
static void uart1_irq(void)
|
|
||||||
{
|
|
||||||
uart_irq(UART_1, 0);
|
|
||||||
}
|
|
||||||
|
|
||||||
static void uart2_irq(void)
|
|
||||||
{
|
|
||||||
uart_irq(UART_2, 1);
|
|
||||||
}
|
|
||||||
|
|
||||||
void serial_irq_handler(serial_t *obj, uart_irq_handler handler, uint32_t id)
|
|
||||||
{
|
|
||||||
irq_handler = handler;
|
|
||||||
serial_irq_ids[obj->index] = id;
|
|
||||||
}
|
|
||||||
|
|
||||||
void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable)
|
|
||||||
{
|
|
||||||
IRQn_Type irq_n = (IRQn_Type)0;
|
|
||||||
uint32_t vector = 0;
|
|
||||||
|
|
||||||
UartHandle.Instance = (USART_TypeDef *)(obj->uart);
|
|
||||||
|
|
||||||
if (obj->uart == UART_1) {
|
|
||||||
irq_n = USART1_IRQn;
|
|
||||||
vector = (uint32_t)&uart1_irq;
|
|
||||||
}
|
|
||||||
|
|
||||||
if (obj->uart == UART_2) {
|
|
||||||
irq_n = USART2_IRQn;
|
|
||||||
vector = (uint32_t)&uart2_irq;
|
|
||||||
}
|
|
||||||
|
|
||||||
if (enable) {
|
|
||||||
|
|
||||||
if (irq == RxIrq) {
|
|
||||||
__HAL_UART_ENABLE_IT(&UartHandle, UART_IT_RXNE);
|
|
||||||
} else { // TxIrq
|
|
||||||
__HAL_UART_ENABLE_IT(&UartHandle, UART_IT_TC);
|
|
||||||
}
|
|
||||||
|
|
||||||
NVIC_SetVector(irq_n, vector);
|
|
||||||
NVIC_EnableIRQ(irq_n);
|
|
||||||
|
|
||||||
} else { // disable
|
|
||||||
|
|
||||||
int all_disabled = 0;
|
|
||||||
|
|
||||||
if (irq == RxIrq) {
|
|
||||||
__HAL_UART_DISABLE_IT(&UartHandle, UART_IT_RXNE);
|
|
||||||
// Check if TxIrq is disabled too
|
|
||||||
if ((UartHandle.Instance->CR1 & USART_CR1_TCIE) == 0) all_disabled = 1;
|
|
||||||
} else { // TxIrq
|
|
||||||
__HAL_UART_DISABLE_IT(&UartHandle, UART_IT_TC);
|
|
||||||
// Check if RxIrq is disabled too
|
|
||||||
if ((UartHandle.Instance->CR1 & USART_CR1_RXNEIE) == 0) all_disabled = 1;
|
|
||||||
}
|
|
||||||
|
|
||||||
if (all_disabled) NVIC_DisableIRQ(irq_n);
|
|
||||||
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
/******************************************************************************
|
|
||||||
* READ/WRITE
|
|
||||||
******************************************************************************/
|
|
||||||
|
|
||||||
int serial_getc(serial_t *obj)
|
|
||||||
{
|
|
||||||
USART_TypeDef *uart = (USART_TypeDef *)(obj->uart);
|
|
||||||
while (!serial_readable(obj));
|
|
||||||
return (int)(uart->RDR & (uint16_t)0xFF);
|
|
||||||
}
|
|
||||||
|
|
||||||
void serial_putc(serial_t *obj, int c)
|
|
||||||
{
|
|
||||||
USART_TypeDef *uart = (USART_TypeDef *)(obj->uart);
|
|
||||||
while (!serial_writable(obj));
|
|
||||||
uart->TDR = (uint32_t)(c & (uint16_t)0xFF);
|
|
||||||
}
|
|
||||||
|
|
||||||
int serial_readable(serial_t *obj)
|
|
||||||
{
|
|
||||||
int status;
|
|
||||||
UartHandle.Instance = (USART_TypeDef *)(obj->uart);
|
|
||||||
// Check if data is received
|
|
||||||
status = ((__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_RXNE) != RESET) ? 1 : 0);
|
|
||||||
return status;
|
|
||||||
}
|
|
||||||
|
|
||||||
int serial_writable(serial_t *obj)
|
|
||||||
{
|
|
||||||
int status;
|
|
||||||
UartHandle.Instance = (USART_TypeDef *)(obj->uart);
|
|
||||||
// Check if data is transmitted
|
|
||||||
status = ((__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_TXE) != RESET) ? 1 : 0);
|
|
||||||
return status;
|
|
||||||
}
|
|
||||||
|
|
||||||
void serial_clear(serial_t *obj)
|
|
||||||
{
|
|
||||||
UartHandle.Instance = (USART_TypeDef *)(obj->uart);
|
|
||||||
__HAL_UART_CLEAR_IT(&UartHandle, UART_FLAG_TC);
|
|
||||||
__HAL_UART_SEND_REQ(&UartHandle, UART_RXDATA_FLUSH_REQUEST);
|
|
||||||
}
|
|
||||||
|
|
||||||
void serial_pinout_tx(PinName tx)
|
|
||||||
{
|
|
||||||
pinmap_pinout(tx, PinMap_UART_TX);
|
|
||||||
}
|
|
||||||
|
|
||||||
void serial_break_set(serial_t *obj)
|
|
||||||
{
|
|
||||||
// [TODO]
|
|
||||||
}
|
|
||||||
|
|
||||||
void serial_break_clear(serial_t *obj)
|
|
||||||
{
|
|
||||||
// [TODO]
|
|
||||||
}
|
|
||||||
|
|
||||||
#endif
|
|
||||||
|
|
@ -1,59 +0,0 @@
|
||||||
/* mbed Microcontroller Library
|
|
||||||
*******************************************************************************
|
|
||||||
* Copyright (c) 2014, STMicroelectronics
|
|
||||||
* All rights reserved.
|
|
||||||
*
|
|
||||||
* Redistribution and use in source and binary forms, with or without
|
|
||||||
* modification, are permitted provided that the following conditions are met:
|
|
||||||
*
|
|
||||||
* 1. Redistributions of source code must retain the above copyright notice,
|
|
||||||
* this list of conditions and the following disclaimer.
|
|
||||||
* 2. Redistributions in binary form must reproduce the above copyright notice,
|
|
||||||
* this list of conditions and the following disclaimer in the documentation
|
|
||||||
* and/or other materials provided with the distribution.
|
|
||||||
* 3. Neither the name of STMicroelectronics nor the names of its contributors
|
|
||||||
* may be used to endorse or promote products derived from this software
|
|
||||||
* without specific prior written permission.
|
|
||||||
*
|
|
||||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
||||||
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
||||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
||||||
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
|
|
||||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
||||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
||||||
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
|
||||||
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
|
||||||
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
||||||
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
||||||
*******************************************************************************
|
|
||||||
*/
|
|
||||||
#include "sleep_api.h"
|
|
||||||
|
|
||||||
#if DEVICE_SLEEP
|
|
||||||
|
|
||||||
#include "cmsis.h"
|
|
||||||
|
|
||||||
void sleep(void)
|
|
||||||
{
|
|
||||||
// Stop HAL systick
|
|
||||||
HAL_SuspendTick();
|
|
||||||
// Request to enter SLEEP mode
|
|
||||||
HAL_PWR_EnterSLEEPMode(PWR_MAINREGULATOR_ON, PWR_SLEEPENTRY_WFI);
|
|
||||||
// Restart HAL systick
|
|
||||||
HAL_ResumeTick();
|
|
||||||
}
|
|
||||||
|
|
||||||
void deepsleep(void)
|
|
||||||
{
|
|
||||||
// Request to enter STOP mode with regulator in low power mode
|
|
||||||
HAL_PWR_EnterSTOPMode(PWR_LOWPOWERREGULATOR_ON, PWR_STOPENTRY_WFI);
|
|
||||||
|
|
||||||
HAL_InitTick(TICK_INT_PRIORITY);
|
|
||||||
|
|
||||||
// After wake-up from STOP reconfigure the PLL
|
|
||||||
SetSysClock();
|
|
||||||
|
|
||||||
HAL_InitTick(TICK_INT_PRIORITY);
|
|
||||||
}
|
|
||||||
|
|
||||||
#endif
|
|
||||||
|
|
@ -1,179 +0,0 @@
|
||||||
/* mbed Microcontroller Library
|
|
||||||
* Copyright (c) 2014, STMicroelectronics
|
|
||||||
* All rights reserved.
|
|
||||||
*
|
|
||||||
* Redistribution and use in source and binary forms, with or without
|
|
||||||
* modification, are permitted provided that the following conditions are met:
|
|
||||||
*
|
|
||||||
* 1. Redistributions of source code must retain the above copyright notice,
|
|
||||||
* this list of conditions and the following disclaimer.
|
|
||||||
* 2. Redistributions in binary form must reproduce the above copyright notice,
|
|
||||||
* this list of conditions and the following disclaimer in the documentation
|
|
||||||
* and/or other materials provided with the distribution.
|
|
||||||
* 3. Neither the name of STMicroelectronics nor the names of its contributors
|
|
||||||
* may be used to endorse or promote products derived from this software
|
|
||||||
* without specific prior written permission.
|
|
||||||
*
|
|
||||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
||||||
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
||||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
||||||
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
|
|
||||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
||||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
||||||
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
|
||||||
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
|
||||||
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
||||||
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
||||||
*/
|
|
||||||
#include <stddef.h>
|
|
||||||
#include "us_ticker_api.h"
|
|
||||||
#include "PeripheralNames.h"
|
|
||||||
|
|
||||||
// Timer selection:
|
|
||||||
#define TIM_MST TIM1
|
|
||||||
#define TIM_MST_UP_IRQ TIM1_BRK_UP_TRG_COM_IRQn
|
|
||||||
#define TIM_MST_OC_IRQ TIM1_CC_IRQn
|
|
||||||
#define TIM_MST_RCC __TIM1_CLK_ENABLE()
|
|
||||||
|
|
||||||
static TIM_HandleTypeDef TimMasterHandle;
|
|
||||||
|
|
||||||
|
|
||||||
static int us_ticker_inited = 0;
|
|
||||||
static volatile uint32_t SlaveCounter = 0;
|
|
||||||
static volatile uint32_t oc_int_part = 0;
|
|
||||||
static volatile uint16_t oc_rem_part = 0;
|
|
||||||
|
|
||||||
void set_compare(uint16_t count)
|
|
||||||
{
|
|
||||||
TimMasterHandle.Instance = TIM_MST;
|
|
||||||
|
|
||||||
// Set new output compare value
|
|
||||||
__HAL_TIM_SetCompare(&TimMasterHandle, TIM_CHANNEL_1, count);
|
|
||||||
// Enable IT
|
|
||||||
__HAL_TIM_ENABLE_IT(&TimMasterHandle, TIM_IT_CC1);
|
|
||||||
}
|
|
||||||
|
|
||||||
// Used to increment the slave counter
|
|
||||||
static void tim_update_irq_handler(void)
|
|
||||||
{
|
|
||||||
TimMasterHandle.Instance = TIM_MST;
|
|
||||||
|
|
||||||
// Clear Update interrupt flag
|
|
||||||
if (__HAL_TIM_GET_FLAG(&TimMasterHandle, TIM_FLAG_UPDATE) == SET) {
|
|
||||||
__HAL_TIM_CLEAR_FLAG(&TimMasterHandle, TIM_FLAG_UPDATE);
|
|
||||||
SlaveCounter++;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
// Used by interrupt system
|
|
||||||
static void tim_oc_irq_handler(void)
|
|
||||||
{
|
|
||||||
uint16_t cval = TIM_MST->CNT;
|
|
||||||
TimMasterHandle.Instance = TIM_MST;
|
|
||||||
|
|
||||||
// Clear CC1 interrupt flag
|
|
||||||
if (__HAL_TIM_GET_FLAG(&TimMasterHandle, TIM_FLAG_CC1) == SET) {
|
|
||||||
__HAL_TIM_CLEAR_FLAG(&TimMasterHandle, TIM_FLAG_CC1);
|
|
||||||
}
|
|
||||||
if (oc_rem_part > 0) {
|
|
||||||
set_compare(oc_rem_part); // Finish the remaining time left
|
|
||||||
oc_rem_part = 0;
|
|
||||||
} else {
|
|
||||||
if (oc_int_part > 0) {
|
|
||||||
set_compare(0xFFFF);
|
|
||||||
oc_rem_part = cval; // To finish the counter loop the next time
|
|
||||||
oc_int_part--;
|
|
||||||
} else {
|
|
||||||
us_ticker_irq_handler();
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
}
|
|
||||||
|
|
||||||
void us_ticker_init(void)
|
|
||||||
{
|
|
||||||
|
|
||||||
if (us_ticker_inited) return;
|
|
||||||
us_ticker_inited = 1;
|
|
||||||
|
|
||||||
// Enable timer clock
|
|
||||||
TIM_MST_RCC;
|
|
||||||
|
|
||||||
// Configure time base
|
|
||||||
TimMasterHandle.Instance = TIM_MST;
|
|
||||||
TimMasterHandle.Init.Period = 0xFFFF;
|
|
||||||
TimMasterHandle.Init.Prescaler = (uint32_t)(SystemCoreClock / 1000000) - 1; // 1 <20>s tick
|
|
||||||
TimMasterHandle.Init.ClockDivision = 0;
|
|
||||||
TimMasterHandle.Init.CounterMode = TIM_COUNTERMODE_UP;
|
|
||||||
HAL_TIM_Base_Init(&TimMasterHandle);
|
|
||||||
|
|
||||||
// Configure interrupts
|
|
||||||
__HAL_TIM_ENABLE_IT(&TimMasterHandle, TIM_IT_UPDATE);
|
|
||||||
|
|
||||||
// Update interrupt used for 32-bit counter
|
|
||||||
NVIC_SetVector(TIM_MST_UP_IRQ, (uint32_t)tim_update_irq_handler);
|
|
||||||
NVIC_EnableIRQ(TIM_MST_UP_IRQ);
|
|
||||||
|
|
||||||
// Output compare interrupt used for timeout feature
|
|
||||||
NVIC_SetVector(TIM_MST_OC_IRQ, (uint32_t)tim_oc_irq_handler);
|
|
||||||
NVIC_EnableIRQ(TIM_MST_OC_IRQ);
|
|
||||||
|
|
||||||
// Enable timer
|
|
||||||
HAL_TIM_Base_Start(&TimMasterHandle);
|
|
||||||
}
|
|
||||||
|
|
||||||
uint32_t us_ticker_read()
|
|
||||||
{
|
|
||||||
uint32_t counter, counter2;
|
|
||||||
if (!us_ticker_inited) us_ticker_init();
|
|
||||||
// A situation might appear when Master overflows right after Slave is read and before the
|
|
||||||
// new (overflowed) value of Master is read. Which would make the code below consider the
|
|
||||||
// previous (incorrect) value of Slave and the new value of Master, which would return a
|
|
||||||
// value in the past. Avoid this by computing consecutive values of the timer until they
|
|
||||||
// are properly ordered.
|
|
||||||
counter = (uint32_t)(SlaveCounter << 16);
|
|
||||||
counter += TIM_MST->CNT;
|
|
||||||
while (1) {
|
|
||||||
counter2 = (uint32_t)(SlaveCounter << 16);
|
|
||||||
counter2 += TIM_MST->CNT;
|
|
||||||
if (counter2 > counter) {
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
counter = counter2;
|
|
||||||
}
|
|
||||||
return counter2;
|
|
||||||
}
|
|
||||||
|
|
||||||
void us_ticker_set_interrupt(timestamp_t timestamp)
|
|
||||||
{
|
|
||||||
int delta = (int)((uint32_t)timestamp - us_ticker_read());
|
|
||||||
uint16_t cval = TIM_MST->CNT;
|
|
||||||
|
|
||||||
if (delta <= 0) { // This event was in the past
|
|
||||||
us_ticker_irq_handler();
|
|
||||||
} else {
|
|
||||||
oc_int_part = (uint32_t)(delta >> 16);
|
|
||||||
oc_rem_part = (uint16_t)(delta & 0xFFFF);
|
|
||||||
if (oc_rem_part <= (0xFFFF - cval)) {
|
|
||||||
set_compare(cval + oc_rem_part);
|
|
||||||
oc_rem_part = 0;
|
|
||||||
} else {
|
|
||||||
set_compare(0xFFFF);
|
|
||||||
oc_rem_part = oc_rem_part - (0xFFFF - cval);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
void us_ticker_disable_interrupt(void)
|
|
||||||
{
|
|
||||||
TimMasterHandle.Instance = TIM_MST;
|
|
||||||
__HAL_TIM_DISABLE_IT(&TimMasterHandle, TIM_IT_CC1);
|
|
||||||
}
|
|
||||||
|
|
||||||
void us_ticker_clear_interrupt(void)
|
|
||||||
{
|
|
||||||
TimMasterHandle.Instance = TIM_MST;
|
|
||||||
if (__HAL_TIM_GET_FLAG(&TimMasterHandle, TIM_FLAG_CC1) == SET) {
|
|
||||||
__HAL_TIM_CLEAR_FLAG(&TimMasterHandle, TIM_FLAG_CC1);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
@ -48,7 +48,9 @@ void pwmout_init(pwmout_t* obj, PinName pin)
|
||||||
}
|
}
|
||||||
|
|
||||||
// Enable TIM clock
|
// Enable TIM clock
|
||||||
|
#if defined(TIM1_BASE)
|
||||||
if (obj->pwm == PWM_1) __TIM1_CLK_ENABLE();
|
if (obj->pwm == PWM_1) __TIM1_CLK_ENABLE();
|
||||||
|
#endif
|
||||||
#if defined(TIM2_BASE)
|
#if defined(TIM2_BASE)
|
||||||
if (obj->pwm == PWM_2) __TIM2_CLK_ENABLE();
|
if (obj->pwm == PWM_2) __TIM2_CLK_ENABLE();
|
||||||
#endif
|
#endif
|
||||||
|
|
@ -99,6 +101,46 @@ void pwmout_write(pwmout_t* obj, float value)
|
||||||
sConfig.OCIdleState = TIM_OCIDLESTATE_RESET;
|
sConfig.OCIdleState = TIM_OCIDLESTATE_RESET;
|
||||||
sConfig.OCNIdleState = TIM_OCNIDLESTATE_RESET;
|
sConfig.OCNIdleState = TIM_OCNIDLESTATE_RESET;
|
||||||
|
|
||||||
|
#if defined (TARGET_STM32F030R8)
|
||||||
|
switch (obj->pin) {
|
||||||
|
// Channels 1
|
||||||
|
case PA_4:
|
||||||
|
case PA_6:
|
||||||
|
case PB_1:
|
||||||
|
case PB_4:
|
||||||
|
case PB_8:
|
||||||
|
case PB_9:
|
||||||
|
case PB_14:
|
||||||
|
case PC_6:
|
||||||
|
channel = TIM_CHANNEL_1;
|
||||||
|
break;
|
||||||
|
// Channels 1N
|
||||||
|
case PB_6:
|
||||||
|
case PB_7:
|
||||||
|
channel = TIM_CHANNEL_1;
|
||||||
|
complementary_channel = 1;
|
||||||
|
break;
|
||||||
|
// Channels 2
|
||||||
|
case PA_7:
|
||||||
|
case PB_5:
|
||||||
|
case PB_15:
|
||||||
|
case PC_7:
|
||||||
|
channel = TIM_CHANNEL_2;
|
||||||
|
break;
|
||||||
|
// Channels 3
|
||||||
|
case PB_0:
|
||||||
|
case PC_8:
|
||||||
|
channel = TIM_CHANNEL_3;
|
||||||
|
break;
|
||||||
|
// Channels 4
|
||||||
|
case PC_9:
|
||||||
|
channel = TIM_CHANNEL_4;
|
||||||
|
break;
|
||||||
|
default:
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
#else
|
||||||
switch (obj->pin) {
|
switch (obj->pin) {
|
||||||
// Channels 1
|
// Channels 1
|
||||||
case PA_2:
|
case PA_2:
|
||||||
|
|
@ -145,6 +187,8 @@ void pwmout_write(pwmout_t* obj, float value)
|
||||||
return;
|
return;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
#endif
|
||||||
|
|
||||||
HAL_TIM_PWM_ConfigChannel(&TimHandle, &sConfig, channel);
|
HAL_TIM_PWM_ConfigChannel(&TimHandle, &sConfig, channel);
|
||||||
|
|
||||||
if (complementary_channel) {
|
if (complementary_channel) {
|
||||||
|
|
|
||||||
|
|
@ -42,6 +42,11 @@
|
||||||
|
|
||||||
static uint32_t serial_irq_ids[UART_NUM] = {0, 0, 0, 0, 0, 0, 0, 0};
|
static uint32_t serial_irq_ids[UART_NUM] = {0, 0, 0, 0, 0, 0, 0, 0};
|
||||||
|
|
||||||
|
#elif defined (TARGET_STM32F030R8)
|
||||||
|
#define UART_NUM (2)
|
||||||
|
|
||||||
|
static uint32_t serial_irq_ids[UART_NUM] = {0, 0};
|
||||||
|
|
||||||
#else
|
#else
|
||||||
#define UART_NUM (4)
|
#define UART_NUM (4)
|
||||||
|
|
||||||
|
|
@ -102,15 +107,19 @@ void serial_init(serial_t *obj, PinName tx, PinName rx)
|
||||||
obj->index = 1;
|
obj->index = 1;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
#if defined USART3_BASE
|
||||||
if (obj->uart == UART_3) {
|
if (obj->uart == UART_3) {
|
||||||
__USART3_CLK_ENABLE();
|
__USART3_CLK_ENABLE();
|
||||||
obj->index = 2;
|
obj->index = 2;
|
||||||
}
|
}
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#if defined USART4_BASE
|
||||||
if (obj->uart == UART_4) {
|
if (obj->uart == UART_4) {
|
||||||
__USART4_CLK_ENABLE();
|
__USART4_CLK_ENABLE();
|
||||||
obj->index = 3;
|
obj->index = 3;
|
||||||
}
|
}
|
||||||
|
#endif
|
||||||
|
|
||||||
#if defined USART5_BASE
|
#if defined USART5_BASE
|
||||||
if (obj->uart == UART_5) {
|
if (obj->uart == UART_5) {
|
||||||
|
|
@ -183,17 +192,21 @@ void serial_free(serial_t *obj)
|
||||||
__USART2_CLK_DISABLE();
|
__USART2_CLK_DISABLE();
|
||||||
}
|
}
|
||||||
|
|
||||||
|
#if defined USART3_BASE
|
||||||
if (obj->uart == UART_3) {
|
if (obj->uart == UART_3) {
|
||||||
__USART3_FORCE_RESET();
|
__USART3_FORCE_RESET();
|
||||||
__USART3_RELEASE_RESET();
|
__USART3_RELEASE_RESET();
|
||||||
__USART3_CLK_DISABLE();
|
__USART3_CLK_DISABLE();
|
||||||
}
|
}
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#if defined USART4_BASE
|
||||||
if (obj->uart == UART_4) {
|
if (obj->uart == UART_4) {
|
||||||
__USART4_FORCE_RESET();
|
__USART4_FORCE_RESET();
|
||||||
__USART4_RELEASE_RESET();
|
__USART4_RELEASE_RESET();
|
||||||
__USART4_CLK_DISABLE();
|
__USART4_CLK_DISABLE();
|
||||||
}
|
}
|
||||||
|
#endif
|
||||||
|
|
||||||
#if defined USART5_BASE
|
#if defined USART5_BASE
|
||||||
if (obj->uart == UART_5) {
|
if (obj->uart == UART_5) {
|
||||||
|
|
@ -301,15 +314,19 @@ static void uart2_irq(void)
|
||||||
uart_irq(UART_2, 1);
|
uart_irq(UART_2, 1);
|
||||||
}
|
}
|
||||||
|
|
||||||
|
#if defined USART3_BASE
|
||||||
static void uart3_irq(void)
|
static void uart3_irq(void)
|
||||||
{
|
{
|
||||||
uart_irq(UART_3, 2);
|
uart_irq(UART_3, 2);
|
||||||
}
|
}
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#if defined USART4_BASE
|
||||||
static void uart4_irq(void)
|
static void uart4_irq(void)
|
||||||
{
|
{
|
||||||
uart_irq(UART_4, 3);
|
uart_irq(UART_4, 3);
|
||||||
}
|
}
|
||||||
|
#endif
|
||||||
|
|
||||||
#if defined USART5_BASE
|
#if defined USART5_BASE
|
||||||
static void uart5_irq(void)
|
static void uart5_irq(void)
|
||||||
|
|
@ -393,6 +410,8 @@ void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable)
|
||||||
vector = (uint32_t)&uart8_irq;
|
vector = (uint32_t)&uart8_irq;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
#elif defined (TARGET_STM32F030R8)
|
||||||
|
|
||||||
#else
|
#else
|
||||||
if (obj->uart == UART_3) {
|
if (obj->uart == UART_3) {
|
||||||
irq_n = USART3_4_IRQn;
|
irq_n = USART3_4_IRQn;
|
||||||
|
|
|
||||||
|
|
@ -49,6 +49,18 @@ void sleep(void)
|
||||||
// Enable HAL tick and us_ticker update interrupts
|
// Enable HAL tick and us_ticker update interrupts
|
||||||
__HAL_TIM_ENABLE_IT(&TimMasterHandle, (TIM_IT_CC2 | TIM_IT_UPDATE));
|
__HAL_TIM_ENABLE_IT(&TimMasterHandle, (TIM_IT_CC2 | TIM_IT_UPDATE));
|
||||||
}
|
}
|
||||||
|
|
||||||
|
#elif defined(TARGET_STM32F030R8)
|
||||||
|
void sleep(void)
|
||||||
|
{
|
||||||
|
// Stop HAL systick
|
||||||
|
HAL_SuspendTick();
|
||||||
|
// Request to enter SLEEP mode
|
||||||
|
HAL_PWR_EnterSLEEPMode(PWR_MAINREGULATOR_ON, PWR_SLEEPENTRY_WFI);
|
||||||
|
// Restart HAL systick
|
||||||
|
HAL_ResumeTick();
|
||||||
|
}
|
||||||
|
|
||||||
#else
|
#else
|
||||||
static TIM_HandleTypeDef TimMasterHandle;
|
static TIM_HandleTypeDef TimMasterHandle;
|
||||||
|
|
||||||
|
|
@ -67,6 +79,21 @@ void sleep(void)
|
||||||
}
|
}
|
||||||
#endif
|
#endif
|
||||||
|
|
||||||
|
#if defined(TARGET_STM32F030R8)
|
||||||
|
void deepsleep(void)
|
||||||
|
{
|
||||||
|
// Request to enter STOP mode with regulator in low power mode
|
||||||
|
HAL_PWR_EnterSTOPMode(PWR_LOWPOWERREGULATOR_ON, PWR_STOPENTRY_WFI);
|
||||||
|
|
||||||
|
HAL_InitTick(TICK_INT_PRIORITY);
|
||||||
|
|
||||||
|
// After wake-up from STOP reconfigure the PLL
|
||||||
|
SetSysClock();
|
||||||
|
|
||||||
|
HAL_InitTick(TICK_INT_PRIORITY);
|
||||||
|
}
|
||||||
|
|
||||||
|
#else
|
||||||
void deepsleep(void)
|
void deepsleep(void)
|
||||||
{
|
{
|
||||||
// Request to enter STOP mode with regulator in low power mode
|
// Request to enter STOP mode with regulator in low power mode
|
||||||
|
|
@ -75,5 +102,6 @@ void deepsleep(void)
|
||||||
// After wake-up from STOP reconfigure the PLL
|
// After wake-up from STOP reconfigure the PLL
|
||||||
SetSysClock();
|
SetSysClock();
|
||||||
}
|
}
|
||||||
|
#endif
|
||||||
|
|
||||||
#endif
|
#endif
|
||||||
|
|
|
||||||
|
|
@ -114,6 +114,157 @@ void us_ticker_clear_interrupt(void)
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
|
#elif defined(TARGET_STM32F030R8)
|
||||||
|
|
||||||
|
// Timer selection:
|
||||||
|
#define TIM_MST TIM1
|
||||||
|
#define TIM_MST_UP_IRQ TIM1_BRK_UP_TRG_COM_IRQn
|
||||||
|
#define TIM_MST_OC_IRQ TIM1_CC_IRQn
|
||||||
|
#define TIM_MST_RCC __TIM1_CLK_ENABLE()
|
||||||
|
|
||||||
|
static TIM_HandleTypeDef TimMasterHandle;
|
||||||
|
|
||||||
|
|
||||||
|
static int us_ticker_inited = 0;
|
||||||
|
static volatile uint32_t SlaveCounter = 0;
|
||||||
|
static volatile uint32_t oc_int_part = 0;
|
||||||
|
static volatile uint16_t oc_rem_part = 0;
|
||||||
|
|
||||||
|
void set_compare(uint16_t count)
|
||||||
|
{
|
||||||
|
TimMasterHandle.Instance = TIM_MST;
|
||||||
|
|
||||||
|
// Set new output compare value
|
||||||
|
__HAL_TIM_SetCompare(&TimMasterHandle, TIM_CHANNEL_1, count);
|
||||||
|
// Enable IT
|
||||||
|
__HAL_TIM_ENABLE_IT(&TimMasterHandle, TIM_IT_CC1);
|
||||||
|
}
|
||||||
|
|
||||||
|
// Used to increment the slave counter
|
||||||
|
static void tim_update_irq_handler(void)
|
||||||
|
{
|
||||||
|
TimMasterHandle.Instance = TIM_MST;
|
||||||
|
|
||||||
|
// Clear Update interrupt flag
|
||||||
|
if (__HAL_TIM_GET_FLAG(&TimMasterHandle, TIM_FLAG_UPDATE) == SET) {
|
||||||
|
__HAL_TIM_CLEAR_FLAG(&TimMasterHandle, TIM_FLAG_UPDATE);
|
||||||
|
SlaveCounter++;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
// Used by interrupt system
|
||||||
|
static void tim_oc_irq_handler(void)
|
||||||
|
{
|
||||||
|
uint16_t cval = TIM_MST->CNT;
|
||||||
|
TimMasterHandle.Instance = TIM_MST;
|
||||||
|
|
||||||
|
// Clear CC1 interrupt flag
|
||||||
|
if (__HAL_TIM_GET_FLAG(&TimMasterHandle, TIM_FLAG_CC1) == SET) {
|
||||||
|
__HAL_TIM_CLEAR_FLAG(&TimMasterHandle, TIM_FLAG_CC1);
|
||||||
|
}
|
||||||
|
if (oc_rem_part > 0) {
|
||||||
|
set_compare(oc_rem_part); // Finish the remaining time left
|
||||||
|
oc_rem_part = 0;
|
||||||
|
} else {
|
||||||
|
if (oc_int_part > 0) {
|
||||||
|
set_compare(0xFFFF);
|
||||||
|
oc_rem_part = cval; // To finish the counter loop the next time
|
||||||
|
oc_int_part--;
|
||||||
|
} else {
|
||||||
|
us_ticker_irq_handler();
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
}
|
||||||
|
|
||||||
|
void us_ticker_init(void)
|
||||||
|
{
|
||||||
|
|
||||||
|
if (us_ticker_inited) return;
|
||||||
|
us_ticker_inited = 1;
|
||||||
|
|
||||||
|
// Enable timer clock
|
||||||
|
TIM_MST_RCC;
|
||||||
|
|
||||||
|
// Configure time base
|
||||||
|
TimMasterHandle.Instance = TIM_MST;
|
||||||
|
TimMasterHandle.Init.Period = 0xFFFF;
|
||||||
|
TimMasterHandle.Init.Prescaler = (uint32_t)(SystemCoreClock / 1000000) - 1; // 1 <20>s tick
|
||||||
|
TimMasterHandle.Init.ClockDivision = 0;
|
||||||
|
TimMasterHandle.Init.CounterMode = TIM_COUNTERMODE_UP;
|
||||||
|
HAL_TIM_Base_Init(&TimMasterHandle);
|
||||||
|
|
||||||
|
// Configure interrupts
|
||||||
|
__HAL_TIM_ENABLE_IT(&TimMasterHandle, TIM_IT_UPDATE);
|
||||||
|
|
||||||
|
// Update interrupt used for 32-bit counter
|
||||||
|
NVIC_SetVector(TIM_MST_UP_IRQ, (uint32_t)tim_update_irq_handler);
|
||||||
|
NVIC_EnableIRQ(TIM_MST_UP_IRQ);
|
||||||
|
|
||||||
|
// Output compare interrupt used for timeout feature
|
||||||
|
NVIC_SetVector(TIM_MST_OC_IRQ, (uint32_t)tim_oc_irq_handler);
|
||||||
|
NVIC_EnableIRQ(TIM_MST_OC_IRQ);
|
||||||
|
|
||||||
|
// Enable timer
|
||||||
|
HAL_TIM_Base_Start(&TimMasterHandle);
|
||||||
|
}
|
||||||
|
|
||||||
|
uint32_t us_ticker_read()
|
||||||
|
{
|
||||||
|
uint32_t counter, counter2;
|
||||||
|
if (!us_ticker_inited) us_ticker_init();
|
||||||
|
// A situation might appear when Master overflows right after Slave is read and before the
|
||||||
|
// new (overflowed) value of Master is read. Which would make the code below consider the
|
||||||
|
// previous (incorrect) value of Slave and the new value of Master, which would return a
|
||||||
|
// value in the past. Avoid this by computing consecutive values of the timer until they
|
||||||
|
// are properly ordered.
|
||||||
|
counter = (uint32_t)(SlaveCounter << 16);
|
||||||
|
counter += TIM_MST->CNT;
|
||||||
|
while (1) {
|
||||||
|
counter2 = (uint32_t)(SlaveCounter << 16);
|
||||||
|
counter2 += TIM_MST->CNT;
|
||||||
|
if (counter2 > counter) {
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
counter = counter2;
|
||||||
|
}
|
||||||
|
return counter2;
|
||||||
|
}
|
||||||
|
|
||||||
|
void us_ticker_set_interrupt(timestamp_t timestamp)
|
||||||
|
{
|
||||||
|
int delta = (int)((uint32_t)timestamp - us_ticker_read());
|
||||||
|
uint16_t cval = TIM_MST->CNT;
|
||||||
|
|
||||||
|
if (delta <= 0) { // This event was in the past
|
||||||
|
us_ticker_irq_handler();
|
||||||
|
} else {
|
||||||
|
oc_int_part = (uint32_t)(delta >> 16);
|
||||||
|
oc_rem_part = (uint16_t)(delta & 0xFFFF);
|
||||||
|
if (oc_rem_part <= (0xFFFF - cval)) {
|
||||||
|
set_compare(cval + oc_rem_part);
|
||||||
|
oc_rem_part = 0;
|
||||||
|
} else {
|
||||||
|
set_compare(0xFFFF);
|
||||||
|
oc_rem_part = oc_rem_part - (0xFFFF - cval);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
void us_ticker_disable_interrupt(void)
|
||||||
|
{
|
||||||
|
TimMasterHandle.Instance = TIM_MST;
|
||||||
|
__HAL_TIM_DISABLE_IT(&TimMasterHandle, TIM_IT_CC1);
|
||||||
|
}
|
||||||
|
|
||||||
|
void us_ticker_clear_interrupt(void)
|
||||||
|
{
|
||||||
|
TimMasterHandle.Instance = TIM_MST;
|
||||||
|
if (__HAL_TIM_GET_FLAG(&TimMasterHandle, TIM_FLAG_CC1) == SET) {
|
||||||
|
__HAL_TIM_CLEAR_FLAG(&TimMasterHandle, TIM_FLAG_CC1);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
#else
|
#else
|
||||||
|
|
||||||
// 32-bit timer selection
|
// 32-bit timer selection
|
||||||
|
|
|
||||||
Loading…
Reference in New Issue