169 lines
10 KiB
C
169 lines
10 KiB
C
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/*!
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\file gd32f4xx_ctc.h
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\brief definitions for the CTC
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*/
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/*
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Copyright (C) 2016 GigaDevice
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2016-08-15, V1.0.0, firmware for GD32F4xx
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*/
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#ifndef GD32F4XX_CTC_H
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#define GD32F4XX_CTC_H
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#include "gd32f4xx.h"
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/* CTC definitions */
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#define CTC CTC_BASE
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/* registers definitions */
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#define CTC_CTL0 REG32((CTC) + 0x00U) /*!< CTC control register 0 */
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#define CTC_CTL1 REG32((CTC) + 0x04U) /*!< CTC control register 1 */
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#define CTC_STAT REG32((CTC) + 0x08U) /*!< CTC status register */
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#define CTC_INTC REG32((CTC) + 0x0CU) /*!< CTC interrupt clear register */
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/* bits definitions */
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/* CTC_CTL0 */
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#define CTC_CTL0_CKOKIE BIT(0) /*!< clock trim OK(CKOKIF) interrupt enable */
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#define CTC_CTL0_CKWARNIE BIT(1) /*!< clock trim warning(CKWARNIF) interrupt enable */
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#define CTC_CTL0_ERRIE BIT(2) /*!< error(ERRIF) interrupt enable */
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#define CTC_CTL0_EREFIE BIT(3) /*!< EREFIF interrupt enable */
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#define CTC_CTL0_CNTEN BIT(5) /*!< CTC counter enable */
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#define CTC_CTL0_AUTOTRIM BIT(6) /*!< hardware automatically trim mode */
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#define CTC_CTL0_SWREFPUL BIT(7) /*!< software reference source sync pulse */
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#define CTC_CTL0_TRIMVALUE BITS(8,13) /*!< IRC48M trim value */
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/* CTC_CTL1 */
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#define CTC_CTL1_RLVALUE BITS(0,15) /*!< CTC counter reload value */
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#define CTC_CTL1_CKLIM BITS(16,23) /*!< clock trim base limit value */
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#define CTC_CTL1_REFPSC BITS(24,26) /*!< reference signal source prescaler */
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#define CTC_CTL1_REFSEL BITS(28,29) /*!< reference signal source selection */
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#define CTC_CTL1_USBSOFSEL BIT(30) /*!< USBFS or USBHS SOF signal selection */
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#define CTC_CTL1_REFPOL BIT(31) /*!< reference signal source polarity */
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/* CTC_STAT */
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#define CTC_STAT_CKOKIF BIT(0) /*!< clock trim OK interrupt flag */
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#define CTC_STAT_CKWARNIF BIT(1) /*!< clock trim warning interrupt flag */
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#define CTC_STAT_ERRIF BIT(2) /*!< error interrupt flag */
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#define CTC_STAT_EREFIF BIT(3) /*!< expect reference interrupt flag */
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#define CTC_STAT_CKERR BIT(8) /*!< clock trim error bit */
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#define CTC_STAT_REFMISS BIT(9) /*!< reference sync pulse miss */
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#define CTC_STAT_TRIMERR BIT(10) /*!< trim value error bit */
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#define CTC_STAT_REFDIR BIT(15) /*!< CTC trim counter direction when reference sync pulse occurred */
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#define CTC_STAT_REFCAP BITS(16,31) /*!< CTC counter capture when reference sync pulse occurred */
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/* CTC_INTC */
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#define CTC_INTC_CKOKIC BIT(0) /*!< CKOKIF interrupt clear bit */
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#define CTC_INTC_CKWARNIC BIT(1) /*!< CKWARNIF interrupt clear bit */
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#define CTC_INTC_ERRIC BIT(2) /*!< ERRIF interrupt clear bit */
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#define CTC_INTC_EREFIC BIT(3) /*!< EREFIF interrupt clear bit */
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/* constants definitions */
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/* hardware automatically trim mode definitions */
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#define CTC_HARDWARE_TRIM_MODE_ENABLE CTC_CTL0_AUTOTRIM /*!< hardware automatically trim mode enable*/
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#define CTC_HARDWARE_TRIM_MODE_DISABLE ((uint32_t)0x00000000U) /*!< hardware automatically trim mode disable*/
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/* reference signal source polarity definitions */
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#define CTC_REFSOURCE_POLARITY_FALLING CTC_CTL1_REFPOL /*!< reference signal source polarity is falling edge*/
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#define CTC_REFSOURCE_POLARITY_RISING ((uint32_t)0x00000000U) /*!< reference signal source polarity is rising edge*/
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/* USBFS or USBHS SOF signal selection definitions */
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#define CTC_USBSOFSEL_USBHS CTC_CTL1_USBSOFSEL /*!< USBHS SOF signal is selected*/
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#define CTC_USBSOFSEL_USBFS ((uint32_t)0x00000000U) /*!< USBFS SOF signal is selected*/
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/* reference signal source selection definitions */
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#define CTL1_REFSEL(regval) (BITS(28,29) & ((uint32_t)(regval) << 28))
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#define CTC_REFSOURCE_GPIO CTL1_REFSEL(0) /*!< GPIO is selected */
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#define CTC_REFSOURCE_LXTAL CTL1_REFSEL(1) /*!< LXTAL is clock selected */
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#define CTC_REFSOURCE_USBSOF CTL1_REFSEL(2) /*!< USBSOF is selected */
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/* reference signal source prescaler definitions */
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#define CTL1_REFPSC(regval) (BITS(24,26) & ((uint32_t)(regval) << 24))
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#define CTC_REFSOURCE_PSC_OFF CTL1_REFPSC(0) /*!< reference signal not divided */
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#define CTC_REFSOURCE_PSC_DIV2 CTL1_REFPSC(1) /*!< reference signal divided by 2 */
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#define CTC_REFSOURCE_PSC_DIV4 CTL1_REFPSC(2) /*!< reference signal divided by 4 */
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#define CTC_REFSOURCE_PSC_DIV8 CTL1_REFPSC(3) /*!< reference signal divided by 8 */
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#define CTC_REFSOURCE_PSC_DIV16 CTL1_REFPSC(4) /*!< reference signal divided by 16 */
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#define CTC_REFSOURCE_PSC_DIV32 CTL1_REFPSC(5) /*!< reference signal divided by 32 */
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#define CTC_REFSOURCE_PSC_DIV64 CTL1_REFPSC(6) /*!< reference signal divided by 64 */
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#define CTC_REFSOURCE_PSC_DIV128 CTL1_REFPSC(7) /*!< reference signal divided by 128 */
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/* CTC interrupt enable definitions */
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#define CTC_INT_CKOKIE CTC_CTL0_CKOKIE /*!< clock trim OK interrupt enable */
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#define CTC_INT_CKWARNIE CTC_CTL0_CKWARNIE /*!< clock trim warning interrupt enable */
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#define CTC_INT_ERRIE CTC_CTL0_ERRIE /*!< error interrupt enable */
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#define CTC_INT_EREFIE CTC_CTL0_EREFIE /*!< expect reference interrupt enable */
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/* CTC interrupt source definitions */
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#define CTC_INT_CKOK CTC_STAT_CKOKIF /*!< clock trim OK interrupt flag */
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#define CTC_INT_CKWARN CTC_STAT_CKWARNIF /*!< clock trim warning interrupt flag */
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#define CTC_INT_ERR CTC_STAT_ERRIF /*!< error interrupt flag */
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#define CTC_INT_EREF CTC_STAT_EREFIF /*!< expect reference interrupt flag */
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#define CTC_INT_CKERR CTC_STAT_CKERR /*!< clock trim error bit */
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#define CTC_INT_REFMISS CTC_STAT_REFMISS /*!< reference sync pulse miss */
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#define CTC_INT_TRIMERR CTC_STAT_TRIMERR /*!< trim value error */
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/* CTC flag definitions */
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#define CTC_FLAG_CKOK CTC_STAT_CKOKIF /*!< clock trim OK flag */
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#define CTC_FLAG_CKWARN CTC_STAT_CKWARNIF /*!< clock trim warning flag */
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#define CTC_FLAG_ERR CTC_STAT_ERRIF /*!< error flag */
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#define CTC_FLAG_EREF CTC_STAT_EREFIF /*!< expect reference flag */
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#define CTC_FLAG_CKERR CTC_STAT_CKERR /*!< clock trim error bit */
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#define CTC_FLAG_REFMISS CTC_STAT_REFMISS /*!< reference sync pulse miss */
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#define CTC_FLAG_TRIMERR CTC_STAT_TRIMERR /*!< trim value error bit */
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/* function declarations */
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/* reset ctc clock trim controller */
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void ctc_deinit(void);
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/* enable the CTC interrupt */
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void ctc_interrupt_enable(uint32_t ctc_interrupt);
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/* disable the CTC interrupt */
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void ctc_interrupt_disable(uint32_t ctc_interrupt);
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/* get CTC interrupt flag */
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FlagStatus ctc_interrupt_flag_get(uint32_t ctc_interrupt);
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/* clear CTC interrupt flag */
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void ctc_interrupt_flag_clear(uint32_t ctc_interrupt);
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/* get CTC flag */
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FlagStatus ctc_flag_get(uint32_t ctc_flag);
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/* clear CTC flag */
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void ctc_flag_clear(uint32_t ctc_flag);
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/* configure the IRC48M trim value */
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void ctc_irc48m_trim_value_config(uint8_t ctc_trim_value);
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/* generate software reference source sync pulse */
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void ctc_software_refsource_pulse_generate(void);
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/* configure hardware automatically trim mode */
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void ctc_hardware_trim_mode_config(uint32_t ctc_hardmode);
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/* enable CTC counter */
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void ctc_counter_enable(void);
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/* disable CTC counter */
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void ctc_counter_disable(void);
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/* configure reference signal source polarity */
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void ctc_refsource_polarity_config(uint32_t ctc_polarity);
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/* select USBFS or USBHS SOF signal */
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void ctc_usbsof_signal_select(uint32_t ctc_usbsof);
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/* select reference signal source */
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void ctc_refsource_signal_select(uint32_t ctc_refs);
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/* configure reference signal source prescaler */
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void ctc_refsource_prescaler_config(uint32_t ctc_prescaler);
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/* configure clock trim base limit value */
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void ctc_clock_limit_value_config(uint8_t ctc_limit_value);
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/* configure CTC counter reload value */
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void ctc_counter_reload_value_config(uint16_t ctc_reload_value);
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/* read CTC counter capture value when reference sync pulse occurred */
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uint16_t ctc_counter_capture_value_read(void);
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/* read CTC trim counter direction when reference sync pulse occurred */
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FlagStatus ctc_counter_direction_read(void);
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/* read CTC counter reload value */
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uint16_t ctc_counter_reload_value_read(void);
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/* read the IRC48M trim value */
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uint8_t ctc_irc48m_trim_value_read(void);
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#endif /* GD32F4XX_CTC_H */
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