rt-thread/bsp/gd32303e-eval/Libraries/GD32F30x_standard_peripheral/Source/gd32f30x_bkp.c

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2018-05-21 11:13:46 +08:00
/*!
\file gd32f30x_bkp.c
\brief BKP driver
*/
/*
Copyright (C) 2017 GigaDevice
2017-02-10, V1.0.2, firmware for GD32F30x
*/
#include "gd32f30x_bkp.h"
#define TAMPER_FLAG_SHIFT ((uint8_t)8U)
/*!
\brief reset BKP registers
\param[in] none
\param[out] none
\retval none
*/
void bkp_deinit(void)
{
/* reset BKP domain register*/
rcu_bkp_reset_enable();
rcu_bkp_reset_disable();
}
/*!
\brief write BKP data register
\param[in] register_number: refer to bkp_data_register_enum, only one parameter can be selected
\arg BKP_DATA_x(x = 0..41): bkp data register number x
\param[in] data: the data to be write in BKP data register
\param[out] none
\retval none
*/
void bkp_write_data(bkp_data_register_enum register_number, uint16_t data)
{
if((register_number >= BKP_DATA_10) && (register_number <= BKP_DATA_41)){
BKP_DATA10_41(register_number-1U) = data;
}else if((register_number >= BKP_DATA_0) && (register_number <= BKP_DATA_9)){
BKP_DATA0_9(register_number-1U) = data;
}else{
/* illegal parameters */
}
}
/*!
\brief read BKP data register
\param[in] register_number: refer to bkp_data_register_enum, only one parameter can be selected
\arg BKP_DATA_x(x = 0..41): bkp data register number x
\param[out] none
\retval data of BKP data register
*/
uint16_t bkp_read_data(bkp_data_register_enum register_number)
{
uint16_t data = 0U;
/* get the data from the BKP data register */
if((register_number >= BKP_DATA_10) && (register_number <= BKP_DATA_41)){
data = BKP_DATA10_41(register_number-1U);
}else if((register_number >= BKP_DATA_0) && (register_number <= BKP_DATA_9)){
data = BKP_DATA0_9(register_number-1U);
}else{
/* illegal parameters */
}
return data;
}
/*!
\brief enable RTC clock calibration output
\param[in] none
\param[out] none
\retval none
*/
void bkp_rtc_calibration_output_enable(void)
{
BKP_OCTL |= (uint16_t)BKP_OCTL_COEN;
}
/*!
\brief disable RTC clock calibration output
\param[in] none
\param[out] none
\retval none
*/
void bkp_rtc_calibration_output_disable(void)
{
BKP_OCTL &= (uint16_t)~BKP_OCTL_COEN;
}
/*!
\brief enable RTC alarm or second signal output
\param[in] none
\param[out] none
\retval none
*/
void bkp_rtc_signal_output_enable(void)
{
BKP_OCTL |= (uint16_t)BKP_OCTL_ASOEN;
}
/*!
\brief disable RTC alarm or second signal output
\param[in] none
\param[out] none
\retval none
*/
void bkp_rtc_signal_output_disable(void)
{
BKP_OCTL &= (uint16_t)~BKP_OCTL_ASOEN;
}
/*!
\brief select RTC output
\param[in] outputsel: RTC output selection
\arg RTC_OUTPUT_ALARM_PULSE: RTC alarm pulse is selected as the RTC output
\arg RTC_OUTPUT_SECOND_PULSE: RTC second pulse is selected as the RTC output
\param[out] none
\retval none
*/
void bkp_rtc_output_select(uint16_t outputsel)
{
uint16_t ctl = 0U;
ctl = BKP_OCTL;
ctl &= (uint16_t)~BKP_OCTL_ROSEL;
ctl |= outputsel;
BKP_OCTL = ctl;
}
/*!
\brief select RTC clock output
\param[in] clocksel: RTC clock output selection
\arg RTC_CLOCK_DIV_64: RTC clock div 64
\arg RTC_CLOCK_DIV_1: RTC clock
\param[out] none
\retval none
*/
void bkp_rtc_clock_output_select(uint16_t clocksel)
{
uint16_t ctl = 0U;
ctl = BKP_OCTL;
ctl &= (uint16_t)~BKP_OCTL_CCOSEL;
ctl |= clocksel;
BKP_OCTL = ctl;
}
/*!
\brief RTC clock calibration direction
\param[in] direction: RTC clock calibration direction
\arg RTC_CLOCK_SLOWED_DOWN: RTC clock slow down
\arg RTC_CLOCK_SPEED_UP: RTC clock speed up
\param[out] none
\retval none
*/
void bkp_rtc_clock_calibration_direction(uint16_t direction)
{
uint16_t ctl = 0U;
ctl = BKP_OCTL;
ctl &= (uint16_t)~BKP_OCTL_CALDIR;
ctl |= direction;
BKP_OCTL = ctl;
}
/*!
\brief set RTC clock calibration value
\param[in] value: RTC clock calibration value
\arg 0x00 - 0x7F
\param[out] none
\retval none
*/
void bkp_rtc_calibration_value_set(uint8_t value)
{
uint16_t ctl;
ctl = BKP_OCTL;
ctl &= (uint16_t)OCTL_RCCV(0);
ctl |= (uint16_t)OCTL_RCCV(value);
BKP_OCTL = ctl;
}
/*!
\brief enable tamper detection
\param[in] none
\param[out] none
\retval none
*/
void bkp_tamper_detection_enable(void)
{
BKP_TPCTL |= (uint16_t)BKP_TPCTL_TPEN;
}
/*!
\brief disable tamper detection
\param[in] none
\param[out] none
\retval none
*/
void bkp_tamper_detection_disable(void)
{
BKP_TPCTL &= (uint16_t)~BKP_TPCTL_TPEN;
}
/*!
\brief set tamper pin active level
\param[in] level: tamper active level
\arg TAMPER_PIN_ACTIVE_HIGH: the tamper pin is active high
\arg TAMPER_PIN_ACTIVE_LOW: the tamper pin is active low
\param[out] none
\retval none
*/
void bkp_tamper_active_level_set(uint16_t level)
{
uint16_t ctl = 0U;
ctl = BKP_TPCTL;
ctl &= (uint16_t)~BKP_TPCTL_TPAL;
ctl |= level;
BKP_TPCTL = ctl;
}
/*!
\brief enable tamper interrupt
\param[in] none
\param[out] none
\retval none
*/
void bkp_tamper_interrupt_enable(void)
{
BKP_TPCS |= (uint16_t)BKP_TPCS_TPIE;
}
/*!
\brief disable tamper interrupt
\param[in] none
\param[out] none
\retval none
*/
void bkp_tamper_interrupt_disable(void)
{
BKP_TPCS &= (uint16_t)~BKP_TPCS_TPIE;
}
/*!
\brief get bkp flag state
\param[in] flag
\arg BKP_FLAG_TAMPER: tamper event flag
\param[out] none
\retval FlagStatus: SET or RESET
*/
FlagStatus bkp_flag_get(uint16_t flag)
{
if(RESET != (BKP_TPCS & flag)){
return SET;
}else{
return RESET;
}
}
/*!
\brief clear bkp flag state
\param[in] flag
\arg BKP_FLAG_TAMPER: tamper event flag
\param[out] none
\retval none
*/
void bkp_flag_clear(uint16_t flag)
{
BKP_TPCS |= (uint16_t)(flag >> TAMPER_FLAG_SHIFT);
}
/*!
\brief get bkp interrupt flag state
\param[in] flag
\arg BKP_INT_FLAG_TAMPER: tamper interrupt flag
\param[out] none
\retval FlagStatus: SET or RESET
*/
FlagStatus bkp_interrupt_flag_get(uint16_t flag)
{
if(RESET != (BKP_TPCS & flag)){
return SET;
}else{
return RESET;
}
}
/*!
\brief clear bkp interrupt flag state
\param[in] flag
\arg BKP_INT_FLAG_TAMPER: tamper interrupt flag
\param[out] none
\retval none
*/
void bkp_interrupt_flag_clear(uint16_t flag)
{
BKP_TPCS |= (uint16_t)(flag >> TAMPER_FLAG_SHIFT);
}