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/**
* \file
*
* \brief SAM DUALTIMER Driver for SAMB11
*
* Copyright (C) 2015-2016 Atmel Corporation. All rights reserved.
*
* \asf_license_start
*
* \page License
*
* 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. The name of Atmel may not be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* 4. This software may only be redistributed and used in connection with an
* Atmel microcontroller product.
*
* THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
* EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL 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.
*
* \asf_license_stop
*
*/
/*
* Support and FAQ: visit <a href="http://www.atmel.com/design-support/">Atmel Support</a>
*/
#include "dualtimer.h"
static dualtimer_callback_t dualtimer_callback_timer1 = NULL;
static dualtimer_callback_t dualtimer_callback_timer2 = NULL;
/**
* \brief Initializes config with predefined default values.
*
* This function will initialize a given Dualtimer configuration structure to
* a set of known default values. This function should be called on
* any new instance of the configuration structures before being
* modified by the user application.
*
* \param[out] config Pointer to a DUALTIMER module configuration structure to set
*/
void dualtimer_get_config_defaults(struct dualtimer_config *config)
{
config->timer1.timer_enable = true;
config->timer2.timer_enable = true;
config->timer1.counter_mode = DUALTIMER_PERIODIC_MODE;
config->timer2.counter_mode = DUALTIMER_PERIODIC_MODE;
config->timer1.counter_size = DUALTIMER_COUNTER_SIZE_32BIT;
config->timer2.counter_size = DUALTIMER_COUNTER_SIZE_32BIT;
config->timer1.clock_prescaler = DUALTIMER_CLOCK_PRESCALER_DIV1;
config->timer2.clock_prescaler = DUALTIMER_CLOCK_PRESCALER_DIV1;
config->timer1.interrup_enable = true;
config->timer2.interrup_enable = true;
config->timer1.load_value = 0;
config->timer2.load_value = 0;
config->clock_source = DUALTIMER_CLK_INPUT_0;
}
/**
* \brief Get Dualtimer module timer1/timer2 current value.
*
* \param[in] timer Timer1/Timer2
*
* \retval Timer1/Timer2 current value
*/
uint32_t dualtimer_get_value(enum dualtimer_timer timer)
{
if (timer == DUALTIMER_TIMER1) {
return DUALTIMER0->TIMER1VALUE.reg;
} else {
return DUALTIMER0->TIMER2VALUE.reg;
}
}
/**
* \brief Set Dualtimer module timer1/timer2 load value.
*
* \param[in] timer Timer1/Timer2
* \param[in] cur_bg Current/Background
* \param[in] value Load value
*/
void dualtimer_set_counter(enum dualtimer_timer timer,
enum dualtimer_set_register cur_bg, uint32_t value)
{
if (timer == DUALTIMER_TIMER1) {
if (cur_bg == DUALTIMER_SET_CURRUNT_REG) {
DUALTIMER0->TIMER1LOAD.reg = value;
} else {
DUALTIMER0->TIMER1BGLOAD.reg = value;
}
} else {
if (cur_bg == DUALTIMER_SET_CURRUNT_REG) {
DUALTIMER0->TIMER2LOAD.reg = value;
} else {
DUALTIMER0->TIMER2BGLOAD.reg = value;
}
}
}
/**
* \brief Get Dualtimer module timer1/timer2 raw interrupt status
*
* \param[in] timer Timer1/Timer2
*
* \retval The raw interrupt status of timer1/timer2
*/
uint8_t dualtimer_get_status(enum dualtimer_timer timer)
{
if (timer == DUALTIMER_TIMER1) {
return DUALTIMER0->TIMER1RIS.reg;
} else {
return DUALTIMER0->TIMER2RIS.reg;
}
}
/**
* \brief Get Dualtimer module timer1/timer2 interrupt status
*
* \param[in] timer Timer1/Timer2
*
* \retval The interrupt status of timer1/timer2
*/
uint8_t dualtimer_get_interrupt_status(enum dualtimer_timer timer)
{
if (timer == DUALTIMER_TIMER1) {
return DUALTIMER0->TIMER1MIS.reg;
} else {
return DUALTIMER0->TIMER2MIS.reg;
}
}
/**
* \brief Clear Dualtimer module timer1/timer2 interrupt status
*
* Clear the Dualtimer module timer1/timer2 interrupt status
*
* \param[in] timer Timer1/Timer2
*/
void dualtimer_clear_interrupt_status(enum dualtimer_timer timer)
{
if (timer == DUALTIMER_TIMER1) {
DUALTIMER0->TIMER1INTCLR.reg = 1;
} else {
DUALTIMER0->TIMER2INTCLR.reg = 1;
}
}
/**
* \brief Set Dualtimer module timer1/timer2 enable
*
* Enable the Dualtimer module timer1/timer2
*
* \param[in] timer Timer1/Timer2
*/
void dualtimer_enable(enum dualtimer_timer timer)
{
if (timer == DUALTIMER_TIMER1) {
DUALTIMER0->TIMER1CONTROL.reg |= DUALTIMER_TIMER1CONTROL_TIMER_ENABLE;
} else {
DUALTIMER0->TIMER2CONTROL.reg |= DUALTIMER_TIMER2CONTROL_TIMER_ENABLE;
}
}
/**
* \brief Set Dualtimer module timer1/timer2 disable
*
* Disable the Dualtimer module timer1/timer2
*
* \param[in] timer Timer1/Timer2
*/
void dualtimer_disable(enum dualtimer_timer timer)
{
if (timer == DUALTIMER_TIMER1) {
DUALTIMER0->TIMER1CONTROL.reg &= ~DUALTIMER_TIMER1CONTROL_TIMER_ENABLE;
} else {
DUALTIMER0->TIMER2CONTROL.reg &= ~DUALTIMER_TIMER2CONTROL_TIMER_ENABLE;
}
}
/**
* \brief Dualtimer ISR handler.
*
* Dualtimer ISR handler.
*
*/
static void dualtimer_isr_handler(void)
{
if (dualtimer_get_interrupt_status(DUALTIMER_TIMER1)) {
dualtimer_clear_interrupt_status(DUALTIMER_TIMER1);
if (dualtimer_callback_timer1)
dualtimer_callback_timer1();
}
if (dualtimer_get_interrupt_status(DUALTIMER_TIMER2)) {
dualtimer_clear_interrupt_status(DUALTIMER_TIMER2);
if (dualtimer_callback_timer2)
dualtimer_callback_timer2();
}
}
/**
* \brief Initializes Dualtimer module instance.
*
* Initializes the Dualtimer module, based on the given
* configuration values.
*
* \param[in] config Pointer to the Dualtimer configuration options struct
*
* \return Status of the initialization procedure.
*/
void dualtimer_init(const struct dualtimer_config *config)
{
uint8_t regval = 0;
/* Global reset */
system_peripheral_reset(PERIPHERAL_DUALT_TIMER);
/* Common config */
if (config->timer1.timer_enable || config->timer2.timer_enable) {
LPMCU_MISC_REGS0->LPMCU_CLOCK_ENABLES_0.reg |=
LPMCU_MISC_REGS_LPMCU_CLOCK_ENABLES_0_DUALTIMER0_CLK_EN;
LPMCU_MISC_REGS0->LPMCU_CTRL.bit.DUALTIMER0_CLK_SEL = config->clock_source;
}
/* Timer1 config */
if (config->timer1.timer_enable) {
if (config->timer1.counter_mode == DUALTIMER_ONE_SHOT_MODE) {
regval = DUALTIMER_TIMER1CONTROL_ONE_SHOT_COUNT_1;
} else if (config->timer1.counter_mode == DUALTIMER_FREE_RUNNING_MODE) {
regval = DUALTIMER_TIMER1CONTROL_TIMER_MODE_0;
} else if (config->timer1.counter_mode == DUALTIMER_PERIODIC_MODE) {
regval = DUALTIMER_TIMER1CONTROL_TIMER_MODE_1;
}
regval |= (DUALTIMER_TIMER1CONTROL_TIMER_SIZE &
((config->timer1.counter_size) << DUALTIMER_TIMER1CONTROL_TIMER_SIZE_Pos)) |
DUALTIMER_TIMER1CONTROL_TIMERPRE(config->timer1.clock_prescaler);
if (config->timer1.interrup_enable) {
regval |= DUALTIMER_TIMER1CONTROL_INTERRUPT_ENABLE;
}
DUALTIMER0->TIMER1LOAD.reg = config->timer1.load_value;
DUALTIMER0->TIMER1CONTROL.reg = regval;
LPMCU_MISC_REGS0->DUALTIMER0_CTRL.reg |= LPMCU_MISC_REGS_DUALTIMER0_CTRL_CNTR_1_ENABLE;
dualtimer_enable(DUALTIMER_TIMER1);
}
/* Timer2 config */
if (config->timer2.timer_enable) {
if (config->timer2.counter_mode == DUALTIMER_ONE_SHOT_MODE) {
regval = DUALTIMER_TIMER2CONTROL_ONE_SHOT_COUNT_1;
} else if (config->timer2.counter_mode == DUALTIMER_FREE_RUNNING_MODE) {
regval = DUALTIMER_TIMER2CONTROL_TIMER_MODE_0;
} else if (config->timer2.counter_mode == DUALTIMER_PERIODIC_MODE) {
regval = DUALTIMER_TIMER2CONTROL_TIMER_MODE_1;
}
regval |= (DUALTIMER_TIMER2CONTROL_TIMER_SIZE &
((config->timer2.counter_size) << DUALTIMER_TIMER2CONTROL_TIMER_SIZE_Pos)) |
DUALTIMER_TIMER2CONTROL_TIMERPRE(config->timer2.clock_prescaler);
if (config->timer2.interrup_enable) {
regval |= DUALTIMER_TIMER2CONTROL_INTERRUPT_ENABLE;
}
DUALTIMER0->TIMER2LOAD.reg = config->timer2.load_value;
DUALTIMER0->TIMER2CONTROL.reg = regval;
LPMCU_MISC_REGS0->DUALTIMER0_CTRL.reg |= LPMCU_MISC_REGS_DUALTIMER0_CTRL_CNTR_2_ENABLE;
dualtimer_enable(DUALTIMER_TIMER2);
}
system_register_isr(RAM_ISR_TABLE_DUALTIMER_INDEX, (uint32_t)dualtimer_isr_handler);
}
/**
* \brief Registers a callback.
*
* Registers and enable a callback function which is implemented by the user.
*
* \param[in] callback_func Pointer to callback function
*/
void dualtimer_register_callback(enum dualtimer_timer timer, dualtimer_callback_t fun)
{
if (timer == DUALTIMER_TIMER1) {
dualtimer_callback_timer1 = fun;
} else {
dualtimer_callback_timer2 = fun;
}
}
/**
* \brief Unregisters a callback.
*
* Unregisters and disable a callback function implemented by the user.
*
*/
void dualtimer_unregister_callback(enum dualtimer_timer timer)
{
if (timer == DUALTIMER_TIMER1) {
dualtimer_callback_timer1 = NULL;
} else {
dualtimer_callback_timer2 = NULL;
}
}
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