/*!
    \file    gd32e23x_dbg.c
    \brief   DBG driver
    
    \version 2019-02-19, V1.0.0, firmware for GD32E23x
*/

/*
    Copyright (c) 2019, GigaDevice Semiconductor Inc.

    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 the copyright holder 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 "gd32e23x_dbg.h"

#define DBG_RESET_VAL       0x00000000U

/*!
    \brief      deinitialize the DBG
    \param[in]  none
    \param[out] none
    \retval     none
*/
void dbg_deinit(void)
{
    DBG_CTL0 = DBG_RESET_VAL;
    DBG_CTL1 = DBG_RESET_VAL;
}

/*!
    \brief      read DBG_ID code register
    \param[in]  none
    \param[out] none
    \retval     DBG_ID code
*/
uint32_t dbg_id_get(void)
{
    return DBG_ID;
}

/*!
    \brief      enable low power behavior when the mcu is in debug mode
    \param[in]  dbg_low_power:
                this parameter can be any combination of the following values:
      \arg        DBG_LOW_POWER_SLEEP: keep debugger connection during sleep mode
      \arg        DBG_LOW_POWER_DEEPSLEEP: keep debugger connection during deepsleep mode
      \arg        DBG_LOW_POWER_STANDBY: keep debugger connection during standby mode
    \param[out] none
    \retval     none
*/
void dbg_low_power_enable(uint32_t dbg_low_power)
{
    DBG_CTL0 |= dbg_low_power;
}

/*!
    \brief      disable low power behavior when the mcu is in debug mode
    \param[in]  dbg_low_power:
                this parameter can be any combination of the following values:
      \arg        DBG_LOW_POWER_SLEEP: donot keep debugger connection during sleep mode
      \arg        DBG_LOW_POWER_DEEPSLEEP: donot keep debugger connection during deepsleep mode
      \arg        DBG_LOW_POWER_STANDBY: donot keep debugger connection during standby mode
    \param[out] none
    \retval     none
*/
void dbg_low_power_disable(uint32_t dbg_low_power)
{
    DBG_CTL0 &= ~dbg_low_power;
}

/*!
    \brief      enable peripheral behavior when the mcu is in debug mode
    \param[in]  dbg_periph: DBG peripheral 
                only one parameter can be selected which is shown as below:
      \arg        DBG_FWDGT_HOLD: debug FWDGT kept when core is halted
      \arg        DBG_WWDGT_HOLD: debug WWDGT kept when core is halted
      \arg        DBG_TIMER0_HOLD: TIMER0 counter kept when core is halted
      \arg        DBG_TIMER2_HOLD: TIMER2 counter kept when core is halted
      \arg        DBG_TIMER5_HOLD: hold TIMER5 counter when core is halted
      \arg        DBG_TIMER13_HOLD: hold TIMER13 counter when core is halted
      \arg        DBG_TIMER14_HOLD: hold TIMER14 counter when core is halted
      \arg        DBG_TIMER15_HOLD: hold TIMER15 counter when core is halted
      \arg        DBG_TIMER16_HOLD: hold TIMER16 counter when core is halted
      \arg        DBG_I2C0_HOLD: hold I2C0 SMBUS when core is halted
      \arg        DBG_I2C1_HOLD: hold I2C1 SMBUS when core is halted
      \arg        DBG_RTC_HOLD: hold RTC calendar and wakeup counter when core is halted
    \param[out] none
    \retval     none
*/
void dbg_periph_enable(dbg_periph_enum dbg_periph)
{
    DBG_REG_VAL(dbg_periph) |= BIT(DBG_BIT_POS(dbg_periph));
}

/*!
    \brief      disable peripheral behavior when the mcu is in debug mode
    \param[in]  dbg_periph: DBG peripheral 
                only one parameter can be selected which is shown as below:
      \arg        DBG_FWDGT_HOLD: debug FWDGT kept when core is halted
      \arg        DBG_WWDGT_HOLD: debug WWDGT kept when core is halted
      \arg        DBG_TIMER0_HOLD: TIMER0 counter kept when core is halted
      \arg        DBG_TIMER2_HOLD: TIMER2 counter kept when core is halted
      \arg        DBG_TIMER5_HOLD: hold TIMER5 counter when core is halted
      \arg        DBG_TIMER13_HOLD: hold TIMER13 counter when core is halted
      \arg        DBG_TIMER14_HOLD: hold TIMER14 counter when core is halted
      \arg        DBG_TIMER15_HOLD: hold TIMER15 counter when core is halted
      \arg        DBG_TIMER16_HOLD: hold TIMER16 counter when core is halted
      \arg        DBG_I2C0_HOLD: hold I2C0 SMBUS when core is halted
      \arg        DBG_I2C1_HOLD: hold I2C1 SMBUS when core is halted
      \arg        DBG_RTC_HOLD: hold RTC calendar and wakeup counter when core is halted
    \param[out] none
    \retval     none
*/
void dbg_periph_disable(dbg_periph_enum dbg_periph)
{
    DBG_REG_VAL(dbg_periph) &= ~BIT(DBG_BIT_POS(dbg_periph));
}
