Data Structures
struct	_QEP_Obj_
	Defines the QEP object. More...

Macros
#define	QEP1_BASE_ADDR (0x00006B00)

#define	QEP2_BASE_ADDR (0x00006B40)

#define	QEP_QDECCTL_QSRC (3 << 14)
	position counter source selection More...

#define	QEP_QDECCTL_SOEN (1 << 13)
	sync output enable More...

#define	QEP_QDECCTL_SPSEL (1 << 12)
	sync output pin selection More...

#define	QEP_QDECCTL_XCR (1 << 11)
	external clock rate More...

#define	QEP_QDECCTL_SWAP (1 << 10)
	swap quadrature clock inputs More...

#define	QEP_QDECCTL_IGATE (1 << 9)
	index pulse gating option More...

#define	QEP_QDECCTL_QAP (1 << 8)
	QEPA input polarity. More...

#define	QEP_QDECCTL_QBP (1 << 7)
	QEPB input polarity. More...

#define	QEP_QDECCTL_QIP (1 << 6)
	QEPI input polarity. More...

#define	QEP_QDECCTL_QSP (1 << 5)
	QEPS input polarity. More...

#define	QEP_QEPCTL_FREESOFT ( 3 << 14)
	emulation control bit More...

#define	QEP_QEPCTL_PCRM ( 3 << 12)
	emulation control bit More...

#define	QEP_QEPCTL_SEI ( 3 << 10)
	strobe event initialization of position counter More...

#define	QEP_QEPCTL_IEI ( 3 << 8)
	index event initialization of position counter More...

#define	QEP_QEPCTL_SWI ( 1 << 7)
	software initialization of position counter More...

#define	QEP_QEPCTL_SEL ( 1 << 6)
	strobe event latch of position counter More...

#define	QEP_QEPCTL_IEL ( 3 << 4)
	index event latch of position counter (software index marker) More...

#define	QEP_QEPCTL_QPEN ( 1 << 3)
	quad position counter enable/software reset More...

#define	QEP_QEPCTL_QCLM ( 1 << 2)
	QEP capture latch mode. More...

#define	QEP_QEPCTL_UTE ( 1 << 1)
	QEP unit timer enable. More...

#define	QEP_QEPCTL_WDE ( 1 << 0)
	watchdog timer enable More...

#define	QEP_QPOSCTL_PCSHDW ( 1 << 15)
	position compare shadow enable More...

#define	QEP_QPOSCTL_PCLOAD ( 1 << 14)
	position compare shadow load mode More...

#define	QEP_QPOSCTL_PCPOL ( 1 << 13)
	load when QPOSCNT = QPOSCMP More...

#define	QEP_QPOSCTL_PCE ( 1 << 12)
	position compare enable/disable More...

#define	QEP_QPOSCTL_PCSPW (4095 << 0)
	selection position compare sync output pulse width More...

#define	QEP_QCAPCTL_CEN ( 1 << 15)
	enable QEP capture More...

#define	QEP_QCAPCTL_CCPS ( 7 << 4)
	qep capture timer clock prescaler More...

#define	QEP_QCAPCTL_UPPS ( 15 << 0)
	unit position event prescaler More...

#define	QEP_QEINT_UTO ( 1 << 11)
	unit timeout interrupt enable More...

#define	QEP_QEINT_IEL ( 1 << 10)
	index event latch interrupt enable More...

#define	QEP_QEINT_SEL ( 1 << 9)
	strobe event latch interrupt enable More...

#define	QEP_QEINT_PCM ( 1 << 8)
	position compare match interrupt enable More...

#define	QEP_QEINT_PCR ( 1 << 7)
	position compare ready interrupt enable More...

#define	QEP_QEINT_PCO ( 1 << 6)
	position counter overflow interrupt enable More...

#define	QEP_QEINT_PCU ( 1 << 5)
	position counter underflow interrupt enable More...

#define	QEP_QEINT_WTO ( 1 << 4)
	watchdog time out interrupt enable More...

#define	QEP_QEINT_QDC ( 1 << 3)
	quadrature direction change interrupt enable More...

#define	QEP_QEINT_QPE ( 1 << 2)
	quadrature phase error interrupt enable More...

#define	QEP_QEINT_PCE ( 1 << 1)
	position counter error interrupt enable More...

#define	QEP_QFLG_UTO ( 1 << 11)
	unit timeout interrupt flag More...

#define	QEP_QFLG_IEL ( 1 << 10)
	index event latch interrupt flag More...

#define	QEP_QFLG_SEL ( 1 << 9)
	strobe event latch interrupt flag More...

#define	QEP_QFLG_PCM ( 1 << 8)
	position compare match interrupt flag More...

#define	QEP_QFLG_PCR ( 1 << 7)
	position compare ready interrupt flag More...

#define	QEP_QFLG_PCO ( 1 << 6)
	position counter overflow interrupt flag More...

#define	QEP_QFLG_PCU ( 1 << 5)
	position counter underflow interrupt flag More...

#define	QEP_QFLG_WTO ( 1 << 4)
	watchdog time out interrupt flag More...

#define	QEP_QFLG_QDC ( 1 << 3)
	quadrature direction change interrupt flag More...

#define	QEP_QFLG_QPE ( 1 << 2)
	quadrature phase error interrupt flag More...

#define	QEP_QFLG_PCE ( 1 << 1)
	position counter error interrupt flag More...

#define	QEP_QCLR_UTO ( 1 << 11)
	clear unit timeout interrupt flag More...

#define	QEP_QCLR_IEL ( 1 << 10)
	clear index event latch interrupt flag More...

#define	QEP_QCLR_SEL ( 1 << 9)
	clear strobe event latch interrupt flag More...

#define	QEP_QCLR_PCM ( 1 << 8)
	clear position compare match interrupt flag More...

#define	QEP_QCLR_PCR ( 1 << 7)
	clear position compare ready interrupt flag More...

#define	QEP_QCLR_PCO ( 1 << 6)
	clear position counter overflow interrupt flag More...

#define	QEP_QCLR_PCU ( 1 << 5)
	clear position counter underflow interrupt flag More...

#define	QEP_QCLR_WTO ( 1 << 4)
	clear watchdog time out interrupt flag More...

#define	QEP_QCLR_QDC ( 1 << 3)
	clear quadrature direction change interrupt flag More...

#define	QEP_QCLR_QPE ( 1 << 2)
	clear quadrature phase error interrupt flag More...

#define	QEP_QCLR_PCE ( 1 << 1)
	clear position counter error interrupt flag More...

#define	QEP_QFRC_UTO ( 1 << 11)
	force unit timeout interrupt More...

#define	QEP_QFRC_IEL ( 1 << 10)
	force index event latch interrupt More...

#define	QEP_QFRC_SEL ( 1 << 9)
	force strobe event latch interrupt More...

#define	QEP_QFRC_PCM ( 1 << 8)
	force position compare match interrupt More...

#define	QEP_QFRC_PCR ( 1 << 7)
	force position compare ready interrupt More...

#define	QEP_QFRC_PCO ( 1 << 6)
	force position counter overflow interrupt More...

#define	QEP_QFRC_PCU ( 1 << 5)
	force position counter underflow interrupt More...

#define	QEP_QFRC_WTO ( 1 << 4)
	force watchdog time out interrupt More...

#define	QEP_QFRC_QDC ( 1 << 3)
	force quadrature direction change interrupt More...

#define	QEP_QFRC_QPE ( 1 << 2)
	force quadrature phase error interrupt More...

#define	QEP_QFRC_PCE ( 1 << 1)
	force position counter error interrupt More...

#define	QEP_QEPSTS_UPEVNT ( 1 << 7)
	unit position event flag More...

#define	QEP_QEPSTS_FDF ( 1 << 6)
	direction on the first index marker More...

#define	QEP_QEPSTS_QDF ( 1 << 5)
	quadrature direction flag More...

#define	QEP_QEPSTS_QDLF ( 1 << 4)
	direction latch flag More...

#define	QEP_QEPSTS_COEF ( 1 << 3)
	capture overflow error flag More...

#define	QEP_QEPSTS_CDEF ( 1 << 2)
	capture direction error flag More...

#define	QEP_QEPSTS_FIMF ( 1 << 1)
	first index marker flag More...

#define	QEP_QEPSTS_PCEF ( 1 << 0)
	position counter error flag More...

Typedefs
typedef struct _QEP_Obj_	QEP_Obj
	Defines the QEP object. More...

typedef struct _QEP_Obj_ *	QEP_Handle
	Defines the QEP handle. More...

Enumerations
enum	QEP_Qsrc_e { QEP_Qsrc_Quad_Count_Mode =(0 << 14), QEP_Qsrc_Dir_Count_Mode =(1 << 14), QEP_Qsrc_Up_Count_Mode =(2 << 14), QEP_Qsrc_Down_Count_Mode =(3 << 14) }
	QEP counting mode. More...

enum	QEP_Spsel_e { QEP_Spsel_Index_Pin_Sync_Output =(0 << 12), QEP_Spsel_Strobe_Pin_Sync_Output =(1 << 12) }
	Sync output pin selection. More...

enum	QEP_Xcr_e { QEP_Xcr_2x_Res =(0 << 11), QEP_Xcr_1x_Res =(1 << 11) }
	External clock rate. More...

enum	QEP_Swap_e { QEP_Swap_Not_Swapped =(0 << 10), QEP_Swap_Swapped =(1 << 10) }
	Swap A/B channels. More...

enum	QEP_Igate_e { QEP_Igate_Disable =(0 << 9), QEP_Igate_Enable =(1 << 9) }
	Index gating. More...

enum	QEP_Qap_e { QEP_Qap_No_Effect =(0 << 8), QEP_Qap_Inverted =(1 << 8) }
	Channel A polarity. More...

enum	QEP_Qbp_e { QEP_Qbp_No_Effect =(0 << 7), QEP_Qbp_Inverted =(1 << 7) }
	Channel B polarity. More...

enum	QEP_Qip_e { QEP_Qip_No_Effect =(0 << 6), QEP_Qip_Inverted =(1 << 6) }
	Index polarity. More...

enum	QEP_Qsp_e { QEP_Qsp_No_Effect =(0 << 5), QEP_Qsp_Inverted =(1 << 5) }
	Channel S polarity. More...

enum	QEPCTL_Freesoft_e { QEPCTL_Freesoft_Immediate_Halt =(0 << 14), QEPCTL_Freesoft_Rollover_Halt =(1 << 14), QEPCTL_Freesoft_Unaffected_Halt =(2 << 14) }
	Emulation control bits. More...

enum	QEPCTL_Pcrm_e { QEPCTL_Pcrm_Index_Reset =(0 << 12), QEPCTL_Pcrm_Max_Reset =(1 << 12), QEPCTL_Pcrm_First_Index_Reset =(2 << 12), QEPCTL_Pcrm_Unit_Time_Reset =(3 << 12) }
	Position counter reset mode. More...

enum	QEPCTL_Sei_e { QEPCTL_Sei_Nothing =(0 << 10), QEPCTL_Sei_Rising_Edge_Init =(2 << 10), QEPCTL_Sei_Rising_Falling_Edge_Init =(3 << 10) }
	Strobe event initialization of position counter. More...

enum	QEPCTL_Iei_e { QEPCTL_Iei_Nothing =(0 << 8), QEPCTL_Iei_Rising_Edge_Init =(2 << 8), QEPCTL_Iei_Rising_Falling_Edge_Init =(3 << 8) }
	Index event initialization of position counter. More...

enum	QEPCTL_Swi_e { QEPCTL_Swi_Nothing =(0 << 7), QEPCTL_Swi_Auto_Init_Counter =(1 << 7) }
	Software initialization of position counter. More...

enum	QEPCTL_Sel_e { QEPCTL_Sel_Rising_Edge =(0 << 6), QEPCTL_Sel_Rising_Falling_Edge =(1 << 6) }
	Strobe event latch of position counter. More...

enum	QEPCTL_Iel_e { QEPCTL_Iel_Rising_Edge =(1 << 4), QEPCTL_Iel_Falling_Edge =(2 << 4), QEPCTL_Iel_Software_Index_Marker =(3 << 4) }
	Index event latch of position counter (software index marker) More...

enum	QEPCTL_Qclm_e { QEPCTL_Qclm_Latch_on_CPU_Read =(0 << 2), QEPCTL_Qclm_Latch_on_Unit_Timeout =(1 << 2) }
	QEP capture latch mode. More...

enum	QPOSCTL_Pcshdw_e { QPOSCTL_Pcshdw_Load_Immediate =(0 << 15), QPOSCTL_Pcshdw_Shadow_Enabled =(1 << 15) }
	Position compare shadow enable. More...

enum	QPOSCTL_Pcload_e { QPOSCTL_Pcload_Load_Posn_Count_Zero =(0 << 14), QPOSCTL_Pcload_Load_Posn_Count_Equal_Compare =(1 << 14) }
	Position compare shadow load mode. More...

enum	QPOSCTL_Pcpol_e { QPOSCTL_Pcpol_Active_High =(0 << 13), QPOSCTL_Pcpol_Active_Low =(1 << 13) }
	Polarity of sync output. More...

enum	QCAPCTL_Ccps_e { QCAPCTL_Ccps_Capture_Div_1 =(0 << 4), QCAPCTL_Ccps_Capture_Div_2 =(1 << 4), QCAPCTL_Ccps_Capture_Div_4 =(2 << 4), QCAPCTL_Ccps_Capture_Div_8 =(3 << 4), QCAPCTL_Ccps_Capture_Div_16 =(4 << 4), QCAPCTL_Ccps_Capture_Div_32 =(5 << 4), QCAPCTL_Ccps_Capture_Div_64 =(6 << 4), QCAPCTL_Ccps_Capture_Div_128 =(7 << 4) }
	QEP capture timer clock prescaler. More...

enum	QCAPCTL_Upps_e { QCAPCTL_Upps_Div_1_Prescale =(0 << 0), QCAPCTL_Upps_Div_2_Prescale =(1 << 0), QCAPCTL_Upps_Div_4_Prescale =(2 << 0), QCAPCTL_Upps_Div_8_Prescale =(3 << 0), QCAPCTL_Upps_Div_16_Prescale =(4 << 0), QCAPCTL_Upps_Div_32_Prescale =(5 << 0), QCAPCTL_Upps_Div_64_Prescale =(6 << 0), QCAPCTL_Upps_Div_128_Prescale =(7 << 0), QCAPCTL_Upps_Div_256_Prescale =(8 << 0), QCAPCTL_Upps_Div_512_Prescale =(9 << 0), QCAPCTL_Upps_Div_1024_Prescale =(10 << 0), QCAPCTL_Upps_Div_2048_Prescale =(11 << 0) }
	Unit position event prescaler. More...

enum	QEINT_e { QEINT_Uto =(1 << 11), QEINT_Iel =(1 << 10), QEINT_Sel =(1 << 9), QEINT_Pcm =(1 << 8), QEINT_Pcr =(1 << 7), QEINT_Pco =(1 << 6), QEINT_Pcu =(1 << 5), QEINT_Wto =(1 << 4), QEINT_Qdc =(1 << 3), QEINT_Qpe =(1 << 2), QEINT_Pce =(1 << 1) }
	QEP interrupt enable flags. More...

enum	QEP_qepsts_e { UPEVNT =(1 << 7), FDF = (1 << 6), QDF = (1 << 5), QDLF = (1 << 4), COEF = (1 << 3), CDEF = (1 << 2), FIMF = (1 << 1), PCEF = (1 << 0) }
	QEP status bits. More...

Functions
void	QEP_clear_all_interrupt_flags (QEP_Handle qepHandle)
	Clears all QEP interrupt flags. More...

void	QEP_clear_interrupt_flag (QEP_Handle qepHandle, const QEINT_e QEINT)
	Clears a single interrupt flag. More...

void	QEP_clear_posn_counter (QEP_Handle qepHandle)
	Clears the position counter. More...

void	QEP_disable_all_interrupts (QEP_Handle qepHandle)
	Disables all interrupts. More...

void	QEP_disable_capture (QEP_Handle qepHandle)
	Disable capture. More...

void	QEP_disable_gate_index (QEP_Handle qepHandle)
	Disable gating of index pulse. More...

void	QEP_disable_interrupt (QEP_Handle qepHandle, const QEINT_e QEINT)
	Disable individual interrupt. More...

void	QEP_disable_posn_compare (QEP_Handle qepHandle)
	Disable position compare. More...

void	QEP_disable_posn_compare_shadow (QEP_Handle qepHandle)
	Disable position compare shadowing. More...

void	QEP_disable_sync_out (QEP_Handle qepHandle)
	Disable output sync pulse. More...

void	QEP_disable_unit_timer (QEP_Handle qepHandle)
	Disable unit timer. More...

void	QEP_disable_watchdog (QEP_Handle qepHandle)
	Disable watchdog timer. More...

void	QEP_enable_capture (QEP_Handle qepHandle)
	Enable capture. More...

void	QEP_enable_counter (QEP_Handle qepHandle)
	Enable counter. More...

void	QEP_enable_gate_index (QEP_Handle qepHandle)
	Enable gating of index pulse. More...

void	QEP_enable_interrupt (QEP_Handle qepHandle, const QEINT_e QEINT)
	Enable individual interrupt. More...

void	QEP_enable_posn_compare (QEP_Handle qepHandle)
	Enable position compare. More...

void	QEP_enable_posn_compare_shadow (QEP_Handle qepHandle)
	Enable position compare shadowing. More...

void	QEP_enable_sync_out (QEP_Handle qepHandle)
	Enable output sync pulse. More...

void	QEP_enable_unit_timer (QEP_Handle qepHandle)
	Enable unit timer. More...

void	QEP_enable_watchdog (QEP_Handle qepHandle)
	Enable watchdog timer. More...

void	QEP_force_interrupt (QEP_Handle qepHandle, const QEINT_e QEINT)
	Manually force QEP interrupt. More...

QEP_Handle	QEP_init (void *pMemory, const size_t numBytes)
	Initializes the QEP object. More...

uint16_t	QEP_read_capture_period_latch (QEP_Handle qepHandle)
	Reads capture period latch. More...

uint16_t	QEP_read_capture_timer_latch (QEP_Handle qepHandle)
	Reads timer latch. More...

uint16_t	QEP_read_interrupt_flag (QEP_Handle qepHandle, const QEINT_e QEINT)
	Reads interrupt flag value. More...

uint32_t	QEP_read_posn_compare (QEP_Handle qepHandle)
	Reads position compare register. More...

uint32_t	QEP_read_posn_count (QEP_Handle qepHandle)
	Reads position counter. More...

uint32_t	QEP_read_posn_index_latch (QEP_Handle qepHandle)
	Reads position counter value index pulse latch register. More...

uint32_t	QEP_read_posn_latch (QEP_Handle qepHandle)
	Reads position counter value. More...

uint32_t	QEP_read_posn_strobe_latch (QEP_Handle qepHandle)
	Reads position strobe latch. More...

uint16_t	QEP_read_status (QEP_Handle qepHandle)
	Reads status register. More...

void	QEP_reset_counter (QEP_Handle qepHandle)
	Resets counter. More...

void	QEP_reset_status (QEP_Handle qepHandle, const QEP_qepsts_e qepsts)
	Resets the individual QEP status register bits. More...

void	QEP_set_capture_latch_mode (QEP_Handle qepHandle, const QEPCTL_Qclm_e QEPCTL_Qclm)
	Sets capture latch mode. More...

void	QEP_set_capture_period (QEP_Handle qepHandle, const uint16_t period)
	Sets capture period. More...

void	QEP_set_capture_prescale (QEP_Handle qepHandle, const QCAPCTL_Ccps_e QCAPCTL_Ccps)
	Sets capture pre-scaler. More...

void	QEP_set_emu_control (QEP_Handle qepHandle, const QEPCTL_Freesoft_e QEPCTL_Freesoft)
	Sets emulation control. More...

void	QEP_set_ext_clock_rate (QEP_Handle qepHandle, const QEP_Xcr_e QEP_Xcr)
	Sets external clock rate. More...

void	QEP_set_index_event_init (QEP_Handle qepHandle, const QEPCTL_Iei_e QEPCTL_Iei)
	Sets the event which initializes the counter register. More...

void	QEP_set_index_event_latch (QEP_Handle qepHandle, const QEPCTL_Iel_e QEPCTL_Iel)
	Sets the index event which latches the position counter. More...

void	QEP_set_index_polarity (QEP_Handle qepHandle, const QEP_Qip_e QEP_Qip)
	Sets index polarity. More...

void	QEP_set_max_posn_count (QEP_Handle qepHandle, const uint32_t max_count)
	Sets max position count. More...

void	QEP_set_posn_compare_pulse_width (QEP_Handle qepHandle, const uint16_t pulse_width)
	Sets output pulse width when a match occur. More...

void	QEP_set_posn_compare_shadow_load (QEP_Handle qepHandle, const QPOSCTL_Pcload_e QPOSCTL_Pcload)
	Sets position compare shadow load mode. More...

void	QEP_set_posn_count_reset_mode (QEP_Handle qepHandle, const QEPCTL_Pcrm_e QEPCTL_Pcrm)
	Sets position counter reset mode. More...

void	QEP_set_posn_init_count (QEP_Handle qepHandle, const uint32_t init_count)
	Sets initial position counter value. More...

void	QEP_set_select_sync_pin (QEP_Handle qepHandle, const QEP_Spsel_e QEP_SPsel)
	Selects whether index or strobe pin is used for sync output. More...

void	QEP_set_soft_init (QEP_Handle qepHandle, const QEPCTL_Swi_e QEPCTL_Swi)
	Determines if software initialization of position counter enabled. More...

void	QEP_set_strobe_event_init (QEP_Handle qepHandle, const QEPCTL_Sei_e QEPCTL_Sei)
	Determines strobe initialization of position counter. More...

void	QEP_set_strobe_event_latch (QEP_Handle qepHandle, const QEPCTL_Sel_e QEPCTL_Sel)
	Sets up strobe latch of position counter. More...

void	QEP_set_strobe_polarity (QEP_Handle qepHandle, const QEP_Qsp_e QEP_Qsp)
	Sets up strobe polarity. More...

void	QEP_set_swap_quad_inputs (QEP_Handle qepHandle, QEP_Swap_e QEP_Swap)
	Sets up swapping of A/B channels. More...

void	QEP_set_synch_output_compare_polarity (QEP_Handle qepHandle, const QPOSCTL_Pcpol_e QPOSCTL_Pcpol)
	Sets synch output compare polarity. More...

void	QEP_set_unit_period (QEP_Handle qepHandle, const uint32_t unit_period)
	Sets unit timer period. More...

void	QEP_set_unit_posn_prescale (QEP_Handle qepHandle, const QCAPCTL_Upps_e QCAPCTL_Upps)
	Sets unit timer prescaling. More...

void	QEP_set_watchdog_period (QEP_Handle qepHandle, const uint16_t watchdog_period)
	Sets watchdog period. More...

void	QEP_set_A_polarity (QEP_Handle qepHandle, const QEP_Qap_e QEP_Qap)
	Sets A polarity. More...

void	QEP_set_B_polarity (QEP_Handle qepHandle, const QEP_Qbp_e QEP_Qbp)
	Sets B polarity. More...

void	QEP_set_QEP_source (QEP_Handle qepHandle, const QEP_Qsrc_e QEP_Qsrc)
	QEP counting mode. More...

void	QEP_setup_strobe_event_latch (QEP_Handle qepHandle, const QEPCTL_Sel_e QEPCTL_Sel)
	QEP strobe latch event. More...

void	QEP_write_posn_compare (QEP_Handle qepHandle, const uint32_t posn)
	Writes a value to the position compare register. More...

Detailed Description

Data Structure Documentation

struct _QEP_Obj_

Defines the QEP object.

Definition at line 407 of file qep.h.

Data Fields
uint16_t	QCAPCTL	QEP Capture Control.
uint16_t	QCLR	QEP Interrupt Clear Register.
uint16_t	QCPRD	QEP Capture Period.
uint16_t	QCPRDLAT	QEP Capture Period Latch.
uint16_t	QCTMR	QEP Capture Timer.
uint16_t	QCTMRLAT	QEP Capture Timer Latch.
uint16_t	QDECCTL	QEP Decoder Control.
uint16_t	QEINT	QEP Interrupt Enable Register.
uint16_t	QEPCTL	QEP Control.
uint16_t	QEPSTS	QEP Status Register.
uint16_t	QFLG	QEP Interrupt Flag Register.
uint16_t	QFRC	QEP Interrupt Force Register.
uint32_t	QPOSCMP	QEP Position Compare.
uint32_t	QPOSCNT	QEP Position Counter.
uint16_t	QPOSCTL	QEP Position Compare Control.
uint32_t	QPOSILAT	QEP Index Position Latch.
uint32_t	QPOSINIT	QEP Initialization Position Count.
uint32_t	QPOSLAT	QEP Position Latch.
uint32_t	QPOSMAX	QEP Maximum Position Count.
uint32_t	QPOSSLAT	QEP Strobe Position Latch.
uint32_t	QUPRD	QEP Unit Period.
uint32_t	QUTMR	QEP Unit Timer.
uint16_t	QWDPRD	QEP Watchdog Period.
uint16_t	QWDTMR	QEP Watchdog Timer.

Macro Definition Documentation

#define QEP1_BASE_ADDR (0x00006B00)

Definition at line 69 of file qep.h.

#define QEP2_BASE_ADDR (0x00006B40)

Definition at line 71 of file qep.h.

#define QEP_QCAPCTL_CCPS ( 7 << 4)

qep capture timer clock prescaler

Definition at line 107 of file qep.h.

Referenced by QEP_set_capture_prescale().

#define QEP_QCAPCTL_CEN ( 1 << 15)

enable QEP capture

Definition at line 106 of file qep.h.

Referenced by QEP_disable_capture(), and QEP_enable_capture().

#define QEP_QCAPCTL_UPPS ( 15 << 0)

unit position event prescaler

Definition at line 108 of file qep.h.

Referenced by QEP_set_unit_posn_prescale().

#define QEP_QCLR_IEL ( 1 << 10)

clear index event latch interrupt flag

Definition at line 138 of file qep.h.

#define QEP_QCLR_PCE ( 1 << 1)

clear position counter error interrupt flag

Definition at line 147 of file qep.h.

#define QEP_QCLR_PCM ( 1 << 8)

clear position compare match interrupt flag

Definition at line 140 of file qep.h.

#define QEP_QCLR_PCO ( 1 << 6)

clear position counter overflow interrupt flag

Definition at line 142 of file qep.h.

#define QEP_QCLR_PCR ( 1 << 7)

clear position compare ready interrupt flag

Definition at line 141 of file qep.h.

#define QEP_QCLR_PCU ( 1 << 5)

clear position counter underflow interrupt flag

Definition at line 143 of file qep.h.

#define QEP_QCLR_QDC ( 1 << 3)

clear quadrature direction change interrupt flag

Definition at line 145 of file qep.h.

#define QEP_QCLR_QPE ( 1 << 2)

clear quadrature phase error interrupt flag

Definition at line 146 of file qep.h.

#define QEP_QCLR_SEL ( 1 << 9)

clear strobe event latch interrupt flag

Definition at line 139 of file qep.h.

#define QEP_QCLR_UTO ( 1 << 11)

clear unit timeout interrupt flag

Definition at line 137 of file qep.h.

#define QEP_QCLR_WTO ( 1 << 4)

clear watchdog time out interrupt flag

Definition at line 144 of file qep.h.

#define QEP_QDECCTL_IGATE (1 << 9)

index pulse gating option

Definition at line 79 of file qep.h.

Referenced by QEP_disable_gate_index().

#define QEP_QDECCTL_QAP (1 << 8)

QEPA input polarity.

Definition at line 80 of file qep.h.

Referenced by QEP_set_A_polarity().

#define QEP_QDECCTL_QBP (1 << 7)

QEPB input polarity.

Definition at line 81 of file qep.h.

Referenced by QEP_set_B_polarity().

#define QEP_QDECCTL_QIP (1 << 6)

QEPI input polarity.

Definition at line 82 of file qep.h.

Referenced by QEP_set_index_polarity().

#define QEP_QDECCTL_QSP (1 << 5)

QEPS input polarity.

Definition at line 83 of file qep.h.

Referenced by QEP_set_strobe_polarity().

#define QEP_QDECCTL_QSRC (3 << 14)

position counter source selection

Definition at line 74 of file qep.h.

Referenced by QEP_set_QEP_source().

#define QEP_QDECCTL_SOEN (1 << 13)

sync output enable

Definition at line 75 of file qep.h.

Referenced by QEP_disable_sync_out(), and QEP_enable_sync_out().

#define QEP_QDECCTL_SPSEL (1 << 12)

sync output pin selection

Definition at line 76 of file qep.h.

Referenced by QEP_set_select_sync_pin().

#define QEP_QDECCTL_SWAP (1 << 10)

swap quadrature clock inputs

Definition at line 78 of file qep.h.

Referenced by QEP_set_swap_quad_inputs().

#define QEP_QDECCTL_XCR (1 << 11)

external clock rate

Definition at line 77 of file qep.h.

Referenced by QEP_set_ext_clock_rate().

#define QEP_QEINT_IEL ( 1 << 10)

index event latch interrupt enable

Definition at line 112 of file qep.h.

#define QEP_QEINT_PCE ( 1 << 1)

position counter error interrupt enable

Definition at line 121 of file qep.h.

#define QEP_QEINT_PCM ( 1 << 8)

position compare match interrupt enable

Definition at line 114 of file qep.h.

#define QEP_QEINT_PCO ( 1 << 6)

position counter overflow interrupt enable

Definition at line 116 of file qep.h.

#define QEP_QEINT_PCR ( 1 << 7)

position compare ready interrupt enable

Definition at line 115 of file qep.h.

#define QEP_QEINT_PCU ( 1 << 5)

position counter underflow interrupt enable

Definition at line 117 of file qep.h.

#define QEP_QEINT_QDC ( 1 << 3)

quadrature direction change interrupt enable

Definition at line 119 of file qep.h.

#define QEP_QEINT_QPE ( 1 << 2)

quadrature phase error interrupt enable

Definition at line 120 of file qep.h.

#define QEP_QEINT_SEL ( 1 << 9)

strobe event latch interrupt enable

Definition at line 113 of file qep.h.

#define QEP_QEINT_UTO ( 1 << 11)

unit timeout interrupt enable

Definition at line 111 of file qep.h.

#define QEP_QEINT_WTO ( 1 << 4)

watchdog time out interrupt enable

Definition at line 118 of file qep.h.

#define QEP_QEPCTL_FREESOFT ( 3 << 14)

emulation control bit

Definition at line 86 of file qep.h.

Referenced by QEP_set_emu_control().

#define QEP_QEPCTL_IEI ( 3 << 8)

index event initialization of position counter

Definition at line 89 of file qep.h.

Referenced by QEP_set_index_event_init().

#define QEP_QEPCTL_IEL ( 3 << 4)

index event latch of position counter (software index marker)

Definition at line 92 of file qep.h.

Referenced by QEP_set_index_event_latch().

#define QEP_QEPCTL_PCRM ( 3 << 12)

emulation control bit

Definition at line 87 of file qep.h.

Referenced by QEP_set_posn_count_reset_mode().

#define QEP_QEPCTL_QCLM ( 1 << 2)

QEP capture latch mode.

Definition at line 94 of file qep.h.

Referenced by QEP_set_capture_latch_mode().

#define QEP_QEPCTL_QPEN ( 1 << 3)

quad position counter enable/software reset

Definition at line 93 of file qep.h.

Referenced by QEP_enable_counter(), and QEP_reset_counter().

#define QEP_QEPCTL_SEI ( 3 << 10)

strobe event initialization of position counter

Definition at line 88 of file qep.h.

Referenced by QEP_set_strobe_event_init().

#define QEP_QEPCTL_SEL ( 1 << 6)

strobe event latch of position counter

Definition at line 91 of file qep.h.

Referenced by QEP_set_strobe_event_latch(), and QEP_setup_strobe_event_latch().

#define QEP_QEPCTL_SWI ( 1 << 7)

software initialization of position counter

Definition at line 90 of file qep.h.

Referenced by QEP_set_soft_init().

#define QEP_QEPCTL_UTE ( 1 << 1)

QEP unit timer enable.

Definition at line 95 of file qep.h.

Referenced by QEP_disable_unit_timer(), and QEP_enable_unit_timer().

#define QEP_QEPCTL_WDE ( 1 << 0)

watchdog timer enable

Definition at line 96 of file qep.h.

Referenced by QEP_disable_watchdog(), and QEP_enable_watchdog().

#define QEP_QEPSTS_CDEF ( 1 << 2)

capture direction error flag

Definition at line 168 of file qep.h.

#define QEP_QEPSTS_COEF ( 1 << 3)

capture overflow error flag

Definition at line 167 of file qep.h.

#define QEP_QEPSTS_FDF ( 1 << 6)

direction on the first index marker

Definition at line 164 of file qep.h.

#define QEP_QEPSTS_FIMF ( 1 << 1)

first index marker flag

Definition at line 169 of file qep.h.

#define QEP_QEPSTS_PCEF ( 1 << 0)

position counter error flag

Definition at line 170 of file qep.h.

#define QEP_QEPSTS_QDF ( 1 << 5)

quadrature direction flag

Definition at line 165 of file qep.h.

#define QEP_QEPSTS_QDLF ( 1 << 4)

direction latch flag

Definition at line 166 of file qep.h.

#define QEP_QEPSTS_UPEVNT ( 1 << 7)

unit position event flag

Definition at line 163 of file qep.h.

#define QEP_QFLG_IEL ( 1 << 10)

index event latch interrupt flag

Definition at line 125 of file qep.h.

#define QEP_QFLG_PCE ( 1 << 1)

position counter error interrupt flag

Definition at line 134 of file qep.h.

#define QEP_QFLG_PCM ( 1 << 8)

position compare match interrupt flag

Definition at line 127 of file qep.h.

#define QEP_QFLG_PCO ( 1 << 6)

position counter overflow interrupt flag

Definition at line 129 of file qep.h.

#define QEP_QFLG_PCR ( 1 << 7)

position compare ready interrupt flag

Definition at line 128 of file qep.h.

#define QEP_QFLG_PCU ( 1 << 5)

position counter underflow interrupt flag

Definition at line 130 of file qep.h.

#define QEP_QFLG_QDC ( 1 << 3)

quadrature direction change interrupt flag

Definition at line 132 of file qep.h.

#define QEP_QFLG_QPE ( 1 << 2)

quadrature phase error interrupt flag

Definition at line 133 of file qep.h.

#define QEP_QFLG_SEL ( 1 << 9)

strobe event latch interrupt flag

Definition at line 126 of file qep.h.

#define QEP_QFLG_UTO ( 1 << 11)

unit timeout interrupt flag

Definition at line 124 of file qep.h.

#define QEP_QFLG_WTO ( 1 << 4)

watchdog time out interrupt flag

Definition at line 131 of file qep.h.

#define QEP_QFRC_IEL ( 1 << 10)

force index event latch interrupt

Definition at line 151 of file qep.h.

#define QEP_QFRC_PCE ( 1 << 1)

force position counter error interrupt

Definition at line 160 of file qep.h.

#define QEP_QFRC_PCM ( 1 << 8)

force position compare match interrupt

Definition at line 153 of file qep.h.

#define QEP_QFRC_PCO ( 1 << 6)

force position counter overflow interrupt

Definition at line 155 of file qep.h.

#define QEP_QFRC_PCR ( 1 << 7)

force position compare ready interrupt

Definition at line 154 of file qep.h.

#define QEP_QFRC_PCU ( 1 << 5)

force position counter underflow interrupt

Definition at line 156 of file qep.h.

#define QEP_QFRC_QDC ( 1 << 3)

force quadrature direction change interrupt

Definition at line 158 of file qep.h.

#define QEP_QFRC_QPE ( 1 << 2)

force quadrature phase error interrupt

Definition at line 159 of file qep.h.

#define QEP_QFRC_SEL ( 1 << 9)

force strobe event latch interrupt

Definition at line 152 of file qep.h.

#define QEP_QFRC_UTO ( 1 << 11)

force unit timeout interrupt

Definition at line 150 of file qep.h.

#define QEP_QFRC_WTO ( 1 << 4)

force watchdog time out interrupt

Definition at line 157 of file qep.h.

#define QEP_QPOSCTL_PCE ( 1 << 12)

position compare enable/disable

Definition at line 102 of file qep.h.

Referenced by QEP_disable_posn_compare(), and QEP_enable_posn_compare().

#define QEP_QPOSCTL_PCLOAD ( 1 << 14)

position compare shadow load mode

Definition at line 100 of file qep.h.

Referenced by QEP_set_posn_compare_shadow_load().

#define QEP_QPOSCTL_PCPOL ( 1 << 13)

load when QPOSCNT = QPOSCMP

Definition at line 101 of file qep.h.

Referenced by QEP_set_synch_output_compare_polarity().

#define QEP_QPOSCTL_PCSHDW ( 1 << 15)

position compare shadow enable

Definition at line 99 of file qep.h.

Referenced by QEP_disable_posn_compare_shadow(), and QEP_enable_posn_compare_shadow().

#define QEP_QPOSCTL_PCSPW (4095 << 0)

selection position compare sync output pulse width

Definition at line 103 of file qep.h.

Referenced by QEP_set_posn_compare_pulse_width().

Typedef Documentation

typedef struct _QEP_Obj_* QEP_Handle

Defines the QEP handle.

Definition at line 438 of file qep.h.

typedef struct _QEP_Obj_ QEP_Obj

Defines the QEP object.

Enumeration Type Documentation

enum QCAPCTL_Ccps_e

QEP capture timer clock prescaler.

Enumerator
QCAPCTL_Ccps_Capture_Div_1	capclk = sysclkout/1
QCAPCTL_Ccps_Capture_Div_2	capclk = sysclkout/2
QCAPCTL_Ccps_Capture_Div_4	capclk = sysclkout/4
QCAPCTL_Ccps_Capture_Div_8	capclk = sysclkout/8
QCAPCTL_Ccps_Capture_Div_16	capclk = sysclkout/16
QCAPCTL_Ccps_Capture_Div_32	capclk = sysclkout/32
QCAPCTL_Ccps_Capture_Div_64	capclk = sysclkout/64
QCAPCTL_Ccps_Capture_Div_128	capclk = sysclkout/128

Definition at line 345 of file qep.h.

enum QCAPCTL_Upps_e

Unit position event prescaler.

Enumerator
QCAPCTL_Upps_Div_1_Prescale	upevnt = qclk/1
QCAPCTL_Upps_Div_2_Prescale	upevnt = qclk/2
QCAPCTL_Upps_Div_4_Prescale	upevnt = qclk/4
QCAPCTL_Upps_Div_8_Prescale	upevnt = qclk/8
QCAPCTL_Upps_Div_16_Prescale	upevnt = qclk/16
QCAPCTL_Upps_Div_32_Prescale	upevnt = qclk/32
QCAPCTL_Upps_Div_64_Prescale	upevnt = qclk/64
QCAPCTL_Upps_Div_128_Prescale	upevnt = qclk/128
QCAPCTL_Upps_Div_256_Prescale	upevnt = qclk/256
QCAPCTL_Upps_Div_512_Prescale	upevnt = qclk/512
QCAPCTL_Upps_Div_1024_Prescale	upevnt = qclk/1024
QCAPCTL_Upps_Div_2048_Prescale	upevnt = qclk/2048

Definition at line 359 of file qep.h.

enum QEINT_e

QEP interrupt enable flags.

Enumerator
QEINT_Uto	unit time out interrupt enable
QEINT_Iel	index event latch interrupt enable
QEINT_Sel	strobe event latch interrupt enable
QEINT_Pcm	position compare match interrupt enable
QEINT_Pcr	position compare ready interrupt enable
QEINT_Pco	position compare overflow interrupt enable
QEINT_Pcu	position compare underflow interrupt enable
QEINT_Wto	position compare watchdog time out interrupt enable
QEINT_Qdc	quadrature direction change interrupt enable
QEINT_Qpe	quadrature phase error interrupt enable
QEINT_Pce	position counter interrupt enable

Definition at line 376 of file qep.h.

enum QEP_Igate_e

Index gating.

Enumerator
QEP_Igate_Disable	disable gating of index pulse
QEP_Igate_Enable	enable gating of index pulse

Definition at line 211 of file qep.h.

enum QEP_Qap_e

Channel A polarity.

Enumerator
QEP_Qap_No_Effect	no effect
QEP_Qap_Inverted	negates QEPA input

Definition at line 219 of file qep.h.

enum QEP_Qbp_e

Channel B polarity.

Enumerator
QEP_Qbp_No_Effect	no effect
QEP_Qbp_Inverted	negates QEPB input

Definition at line 227 of file qep.h.

enum QEP_qepsts_e

QEP status bits.

Enumerator
UPEVNT	unit position event flag
FDF	direction on the first index marker
QDF	quadrature direction flag
QDLF	direction latch flag
COEF	capture overflow error flag
CDEF	capture direction error flag
FIMF	first index marker flag
PCEF	position counter error flag

Definition at line 393 of file qep.h.

enum QEP_Qip_e

Index polarity.

Enumerator
QEP_Qip_No_Effect	no effect
QEP_Qip_Inverted	negates QEPI input

Definition at line 235 of file qep.h.

enum QEP_Qsp_e

Channel S polarity.

Enumerator
QEP_Qsp_No_Effect	no effect
QEP_Qsp_Inverted	negates QEPS input

Definition at line 243 of file qep.h.

enum QEP_Qsrc_e

QEP counting mode.

Enumerator
QEP_Qsrc_Quad_Count_Mode	quadrature count mode
QEP_Qsrc_Dir_Count_Mode	direction count mode
QEP_Qsrc_Up_Count_Mode	up count mode for frequency measurement (QCLK=XCLK, QDIR=1)
QEP_Qsrc_Down_Count_Mode	down count mode for frequency measurement (QCLK=XCLK, QDIR=0)

Definition at line 177 of file qep.h.

enum QEP_Spsel_e

Sync output pin selection.

Enumerator
QEP_Spsel_Index_Pin_Sync_Output	index pin for sync output
QEP_Spsel_Strobe_Pin_Sync_Output	strobe pin for sync output

Definition at line 187 of file qep.h.

enum QEP_Swap_e

Swap A/B channels.

Enumerator
QEP_Swap_Not_Swapped	quad inputs not swapped
QEP_Swap_Swapped	quad inputs swapped

Definition at line 203 of file qep.h.

enum QEP_Xcr_e

External clock rate.

Enumerator
QEP_Xcr_2x_Res	2x resolution: count the rising/falling edge
QEP_Xcr_1x_Res	1x resolution: count the rising edge only

Definition at line 195 of file qep.h.

enum QEPCTL_Freesoft_e

Emulation control bits.

Enumerator
QEPCTL_Freesoft_Immediate_Halt	position, watchdog, unit timer, capture timer stops immediately
QEPCTL_Freesoft_Rollover_Halt	position, watchdog, unit timer continues until rollover, capture counts until next unit period event
QEPCTL_Freesoft_Unaffected_Halt	position, watchdog, unit timer, capture timer unaffected by emu suspend

Definition at line 251 of file qep.h.

enum QEPCTL_Iei_e

Index event initialization of position counter.

Enumerator
QEPCTL_Iei_Nothing	does nothing
QEPCTL_Iei_Rising_Edge_Init	initializes on rising edge of QEPI signal
QEPCTL_Iei_Rising_Falling_Edge_Init	initializes on falling edge of QEPS signal

Definition at line 279 of file qep.h.

enum QEPCTL_Iel_e

Index event latch of position counter (software index marker)

Enumerator
QEPCTL_Iel_Rising_Edge	latches position counter on rising edge of index signal
QEPCTL_Iel_Falling_Edge	ditto on falling edge of index signal
QEPCTL_Iel_Software_Index_Marker	software index marker. See data sheet.

Definition at line 304 of file qep.h.

enum QEPCTL_Pcrm_e

Position counter reset mode.

Enumerator
QEPCTL_Pcrm_Index_Reset	position counter reset on index event
QEPCTL_Pcrm_Max_Reset	position counter reset on max position
QEPCTL_Pcrm_First_Index_Reset	position counter reset on first index event
QEPCTL_Pcrm_Unit_Time_Reset	position counter reset on unit time event

Definition at line 260 of file qep.h.

enum QEPCTL_Qclm_e

QEP capture latch mode.

Enumerator
QEPCTL_Qclm_Latch_on_CPU_Read	latch on position counter read by cpu
QEPCTL_Qclm_Latch_on_Unit_Timeout	latch on unit time out

Definition at line 313 of file qep.h.

enum QEPCTL_Sei_e

Strobe event initialization of position counter.

Enumerator
QEPCTL_Sei_Nothing	does nothing
QEPCTL_Sei_Rising_Edge_Init	initializes on rising edge of QEPS signal
QEPCTL_Sei_Rising_Falling_Edge_Init	initializes on rising/falling edge of QEPS signal

Definition at line 270 of file qep.h.

enum QEPCTL_Sel_e

Strobe event latch of position counter.

Enumerator
QEPCTL_Sel_Rising_Edge	Position counter latched on rising edge of QEPS strobe (QPOSSLAT = POSCCNT)
QEPCTL_Sel_Rising_Falling_Edge	Clockwise: position counter latched on rising edge, counter clockwise: latched on falling edge.

Definition at line 296 of file qep.h.

enum QEPCTL_Swi_e

Software initialization of position counter.

Enumerator
QEPCTL_Swi_Nothing	does nothing
QEPCTL_Swi_Auto_Init_Counter	init position counter (QPOSCNT=QPOSINIT)

Definition at line 288 of file qep.h.

enum QPOSCTL_Pcload_e

Position compare shadow load mode.

Enumerator
QPOSCTL_Pcload_Load_Posn_Count_Zero	load on qposcnt = 0
QPOSCTL_Pcload_Load_Posn_Count_Equal_Compare	load when qposcnt = qposcmp

Definition at line 329 of file qep.h.

enum QPOSCTL_Pcpol_e

Polarity of sync output.

Enumerator
QPOSCTL_Pcpol_Active_High	active high pulse output
QPOSCTL_Pcpol_Active_Low	active low pulse output

Definition at line 337 of file qep.h.

enum QPOSCTL_Pcshdw_e

Position compare shadow enable.

Enumerator
QPOSCTL_Pcshdw_Load_Immediate	shadow disabled, load immediate
QPOSCTL_Pcshdw_Shadow_Enabled	shadow enabled

Definition at line 321 of file qep.h.

Function Documentation

void QEP_clear_all_interrupt_flags ( QEP_Handle qepHandle )

inline

Clears all QEP interrupt flags.

Parameters

[in] qepHandle andle to QEP object

Definition at line 450 of file qep.h.

References _QEP_Obj_::QCLR.

void QEP_clear_interrupt_flag	(	QEP_Handle	qepHandle,
		const QEINT_e	QEINT
	)

inline

Clears a single interrupt flag.

Parameters

[in]	qepHandle	Handle to QEP object
[in]	QEINT	Interrupt flag

Definition at line 462 of file qep.h.

References _QEP_Obj_::QCLR, and _QEP_Obj_::QEINT.

void QEP_clear_posn_counter ( QEP_Handle qepHandle )

inline

Clears the position counter.

Parameters

[in] qepHandle Handle to QEP object

Definition at line 473 of file qep.h.

References _QEP_Obj_::QPOSCNT.

void QEP_disable_all_interrupts ( QEP_Handle qepHandle )

inline

Disables all interrupts.

Parameters

[in] qepHandle Handle to QEP object

Definition at line 484 of file qep.h.

References _QEP_Obj_::QEINT.

void QEP_disable_capture ( QEP_Handle qepHandle )

inline

Disable capture.

Parameters

[in] qepHandle Handle to QEP object

Definition at line 495 of file qep.h.

References _QEP_Obj_::QCAPCTL, and QEP_QCAPCTL_CEN.

void QEP_disable_gate_index ( QEP_Handle qepHandle )

inline

Disable gating of index pulse.

Parameters

[in] qepHandle Handle to QEP object

Definition at line 506 of file qep.h.

References _QEP_Obj_::QDECCTL, and QEP_QDECCTL_IGATE.

void QEP_disable_interrupt	(	QEP_Handle	qepHandle,
		const QEINT_e	QEINT
	)

inline

Disable individual interrupt.

Parameters

[in]	qepHandle	Handle to QEP object
[in]	QEINT	Individual interrupts

Definition at line 518 of file qep.h.

References _QEP_Obj_::QEINT.

void QEP_disable_posn_compare ( QEP_Handle qepHandle )

inline

Disable position compare.

Parameters

[in] qepHandle Handle to QEP object

Definition at line 529 of file qep.h.

References QEP_QPOSCTL_PCE, and _QEP_Obj_::QPOSCTL.

void QEP_disable_posn_compare_shadow ( QEP_Handle qepHandle )

inline

Disable position compare shadowing.

Parameters

[in] qepHandle Handle to QEP object

Definition at line 540 of file qep.h.

References QEP_QPOSCTL_PCSHDW, and _QEP_Obj_::QPOSCTL.

void QEP_disable_sync_out ( QEP_Handle qepHandle )

inline

Disable output sync pulse.

Parameters

[in] qepHandle Handle to QEP object

Definition at line 551 of file qep.h.

References _QEP_Obj_::QDECCTL, and QEP_QDECCTL_SOEN.

void QEP_disable_unit_timer ( QEP_Handle qepHandle )

inline

Disable unit timer.

Parameters

[in] qepHandle Handle to QEP object

Definition at line 562 of file qep.h.

References QEP_QEPCTL_UTE, and _QEP_Obj_::QEPCTL.

void QEP_disable_watchdog ( QEP_Handle qepHandle )

inline

Disable watchdog timer.

Parameters

[in] qepHandle Handle to QEP object

Definition at line 573 of file qep.h.

References QEP_QEPCTL_WDE, and _QEP_Obj_::QEPCTL.

void QEP_enable_capture ( QEP_Handle qepHandle )

inline

Enable capture.

Parameters

[in] qepHandle Handle to QEP object

Definition at line 584 of file qep.h.

References _QEP_Obj_::QCAPCTL, and QEP_QCAPCTL_CEN.

void QEP_enable_counter ( QEP_Handle qepHandle )

inline

Enable counter.

Parameters

[in] qepHandle Handle to QEP object

Definition at line 595 of file qep.h.

References QEP_QEPCTL_QPEN, and _QEP_Obj_::QEPCTL.

void QEP_enable_gate_index ( QEP_Handle qepHandle )

inline

Enable gating of index pulse.

Parameters

[in] qepHandle Handle to QEP object

Definition at line 606 of file qep.h.

References _QEP_Obj_::QDECCTL, and QEP_Igate_Enable.

void QEP_enable_interrupt	(	QEP_Handle	qepHandle,
		const QEINT_e	QEINT
	)

inline

Enable individual interrupt.

Parameters

[in]	qepHandle	Handle to QEP object
[in]	QEINT	Individual interrupts

Definition at line 618 of file qep.h.

References _QEP_Obj_::QEINT.

void QEP_enable_posn_compare ( QEP_Handle qepHandle )

inline

Enable position compare.

Parameters

[in] qepHandle Handle to QEP object

Definition at line 629 of file qep.h.

References QEP_QPOSCTL_PCE, and _QEP_Obj_::QPOSCTL.

void QEP_enable_posn_compare_shadow ( QEP_Handle qepHandle )

inline

Enable position compare shadowing.

Parameters

[in] qepHandle Handle to QEP object

Definition at line 640 of file qep.h.

References QEP_QPOSCTL_PCSHDW, and _QEP_Obj_::QPOSCTL.

void QEP_enable_sync_out ( QEP_Handle qepHandle )

inline

Enable output sync pulse.

Parameters

[in] qepHandle Handle to QEP object

Definition at line 651 of file qep.h.

References _QEP_Obj_::QDECCTL, and QEP_QDECCTL_SOEN.

void QEP_enable_unit_timer ( QEP_Handle qepHandle )

inline

Enable unit timer.

Parameters

[in] qepHandle Handle to QEP object

Definition at line 662 of file qep.h.

References QEP_QEPCTL_UTE, and _QEP_Obj_::QEPCTL.

void QEP_enable_watchdog ( QEP_Handle qepHandle )

inline

Enable watchdog timer.

Parameters

[in] qepHandle Handle to QEP object

Definition at line 673 of file qep.h.

References QEP_QEPCTL_WDE, and _QEP_Obj_::QEPCTL.

void QEP_force_interrupt	(	QEP_Handle	qepHandle,
		const QEINT_e	QEINT
	)

inline

Manually force QEP interrupt.

Parameters

[in]	qepHandle	Handle to QEP object
[in]	QEINT	Individual interrupt

Definition at line 685 of file qep.h.

References _QEP_Obj_::QEINT, and _QEP_Obj_::QFRC.

QEP_Handle QEP_init	(	void *	pMemory,
		const size_t	numBytes
	)

Initializes the QEP object.

Parameters

[in]	pMemory	Memory pointer for new object
[in]	numBytes	Object size

Returns: QEP Handle

Definition at line 57 of file qep.c.

uint16_t QEP_read_capture_period_latch ( QEP_Handle qepHandle )

inline

Reads capture period latch.

Parameters

[in] qepHandle Handle to QEP object

Returns: Counter value

Definition at line 703 of file qep.h.

References _QEP_Obj_::QCPRDLAT.

uint16_t QEP_read_capture_timer_latch ( QEP_Handle qepHandle )

inline

Reads timer latch.

Parameters

[in] qepHandle Handle to QEP object

Returns: Timer value

Definition at line 713 of file qep.h.

References _QEP_Obj_::QCTMRLAT.

uint16_t QEP_read_interrupt_flag	(	QEP_Handle	qepHandle,
		const QEINT_e	QEINT
	)

inline

Reads interrupt flag value.

Parameters

[in]	qepHandle	Handle to QEP object
[in]	QEINT	Which interrupt to interrogate

Returns: Interrupt flag value

Definition at line 724 of file qep.h.

References _QEP_Obj_::QEINT, and _QEP_Obj_::QFLG.

uint32_t QEP_read_posn_compare ( QEP_Handle qepHandle )

inline

Reads position compare register.

Parameters

[in] qepHandle Handle to QEP object

Returns: Counter value

Definition at line 734 of file qep.h.

References _QEP_Obj_::QPOSCMP.

uint32_t QEP_read_posn_count ( QEP_Handle qepHandle )

inline

Reads position counter.

Parameters

[in] qepHandle Handle to QEP object

Returns: Counter value

Definition at line 744 of file qep.h.

References _QEP_Obj_::QPOSCNT.

uint32_t QEP_read_posn_index_latch ( QEP_Handle qepHandle )

inline

Reads position counter value index pulse latch register.

Parameters

[in] qepHandle Handle to QEP object

Returns: Counter value

Definition at line 754 of file qep.h.

References _QEP_Obj_::QPOSILAT.

uint32_t QEP_read_posn_latch ( QEP_Handle qepHandle )

inline

Reads position counter value.

Parameters

[in] qepHandle Handle to QEP object

Returns: Counter value

Definition at line 764 of file qep.h.

References _QEP_Obj_::QPOSLAT.

uint32_t QEP_read_posn_strobe_latch ( QEP_Handle qepHandle )

inline

Reads position strobe latch.

Parameters

[in] qepHandle Handle to QEP object

Returns: Counter value

Definition at line 774 of file qep.h.

References _QEP_Obj_::QPOSSLAT.

uint16_t QEP_read_status ( QEP_Handle qepHandle )

inline

Reads status register.

Parameters

[in] qepHandle Handle to QEP object

Returns: Status register value

Definition at line 784 of file qep.h.

References _QEP_Obj_::QEPSTS.

void QEP_reset_counter ( QEP_Handle qepHandle )

inline

Resets counter.

Parameters

[in] qepHandle Handle to QEP object

Definition at line 793 of file qep.h.

References QEP_QEPCTL_QPEN, and _QEP_Obj_::QEPCTL.

void QEP_reset_status	(	QEP_Handle	qepHandle,
		const QEP_qepsts_e	qepsts
	)

inline

Resets the individual QEP status register bits.

Parameters

[in]	qepHandle	Handle to QEP object
[in]	qepsts	Enumeration selection of the QEP status flag to reset

Definition at line 805 of file qep.h.

References _QEP_Obj_::QEPSTS.

void QEP_set_A_polarity	(	QEP_Handle	qepHandle,
		const QEP_Qap_e	QEP_Qap
	)

inline

Sets A polarity.

Parameters

[in]	qepHandle	Handle to QEP object
[in]	QEP_Qap	Channel A polarity

Definition at line 1111 of file qep.h.

References _QEP_Obj_::QDECCTL, and QEP_QDECCTL_QAP.

void QEP_set_B_polarity	(	QEP_Handle	qepHandle,
		const QEP_Qbp_e	QEP_Qbp
	)

inline

Sets B polarity.

Parameters

[in]	qepHandle	Handle to QEP object
[in]	QEP_Qbp	Channel B polarity

Definition at line 1124 of file qep.h.

References _QEP_Obj_::QDECCTL, and QEP_QDECCTL_QBP.

void QEP_set_capture_latch_mode	(	QEP_Handle	qepHandle,
		const QEPCTL_Qclm_e	QEPCTL_Qclm
	)

inline

Sets capture latch mode.

Parameters

[in]	qepHandle	Handle to QEP object
[in]	QEPCTL_Qclm	capture latch mode

Definition at line 817 of file qep.h.

References QEP_QEPCTL_QCLM, and _QEP_Obj_::QEPCTL.

void QEP_set_capture_period	(	QEP_Handle	qepHandle,
		const uint16_t	period
	)

inline

Sets capture period.

Parameters

[in]	qepHandle	Handle to QEP object
[in]	period	Capture period

Definition at line 830 of file qep.h.

References _QEP_Obj_::QCPRD.

void QEP_set_capture_prescale	(	QEP_Handle	qepHandle,
		const QCAPCTL_Ccps_e	QCAPCTL_Ccps
	)

inline

Sets capture pre-scaler.

Parameters

[in]	qepHandle	Handle to QEP object
[in]	QCAPCTL_Ccps	Capture pre-scaler

Definition at line 842 of file qep.h.

References _QEP_Obj_::QCAPCTL, and QEP_QCAPCTL_CCPS.

void QEP_set_emu_control	(	QEP_Handle	qepHandle,
		const QEPCTL_Freesoft_e	QEPCTL_Freesoft
	)

inline

Sets emulation control.

Parameters

[in]	qepHandle	Handle to QEP object
[in]	QEPCTL_Freesoft	Emulation control bits

Definition at line 853 of file qep.h.

References QEP_QEPCTL_FREESOFT, and _QEP_Obj_::QEPCTL.

void QEP_set_ext_clock_rate	(	QEP_Handle	qepHandle,
		const QEP_Xcr_e	QEP_Xcr
	)

inline

Sets external clock rate.

Parameters

[in]	qepHandle	Handle to QEP object
[in]	QEP_Xcr	External clock rate

Definition at line 866 of file qep.h.

References _QEP_Obj_::QDECCTL, and QEP_QDECCTL_XCR.

void QEP_set_index_event_init	(	QEP_Handle	qepHandle,
		const QEPCTL_Iei_e	QEPCTL_Iei
	)

inline

Sets the event which initializes the counter register.

Parameters

[in]	qepHandle	Handle to QEP object
[in]	QEPCTL_Iei	Index event

Definition at line 879 of file qep.h.

References QEP_QEPCTL_IEI, and _QEP_Obj_::QEPCTL.

void QEP_set_index_event_latch	(	QEP_Handle	qepHandle,
		const QEPCTL_Iel_e	QEPCTL_Iel
	)

inline

Sets the index event which latches the position counter.

Parameters

[in]	qepHandle	Handle to QEP object
[in]	QEPCTL_Iel	Latch event

Definition at line 892 of file qep.h.

References QEP_QEPCTL_IEL, and _QEP_Obj_::QEPCTL.

void QEP_set_index_polarity	(	QEP_Handle	qepHandle,
		const QEP_Qip_e	QEP_Qip
	)

inline

Sets index polarity.

Parameters

[in]	qepHandle	Handle to QEP object
[in]	QEP_Qip	Index polarity

Definition at line 905 of file qep.h.

References _QEP_Obj_::QDECCTL, and QEP_QDECCTL_QIP.

void QEP_set_max_posn_count	(	QEP_Handle	qepHandle,
		const uint32_t	max_count
	)

inline

Sets max position count.

Parameters

[in]	qepHandle	Handle to QEP object
[in]	max_count	Maximum counter value

Definition at line 918 of file qep.h.

References _QEP_Obj_::QPOSMAX.

void QEP_set_posn_compare_pulse_width	(	QEP_Handle	qepHandle,
		const uint16_t	pulse_width
	)

inline

Sets output pulse width when a match occur.

Parameters

[in]	qepHandle	Handle to QEP object
[in]	pulse_width	Pulse width value

Definition at line 930 of file qep.h.

References QEP_QPOSCTL_PCSPW, and _QEP_Obj_::QPOSCTL.

void QEP_set_posn_compare_shadow_load	(	QEP_Handle	qepHandle,
		const QPOSCTL_Pcload_e	QPOSCTL_Pcload
	)

inline

Sets position compare shadow load mode.

Parameters

[in]	qepHandle	Handle to QEP object
[in]	QPOSCTL_Pcload	PC load event

Definition at line 945 of file qep.h.

References QEP_QPOSCTL_PCLOAD, and _QEP_Obj_::QPOSCTL.

void QEP_set_posn_count_reset_mode	(	QEP_Handle	qepHandle,
		const QEPCTL_Pcrm_e	QEPCTL_Pcrm
	)

inline

Sets position counter reset mode.

Parameters

[in]	qepHandle	Handle to QEP object
[in]	QEPCTL_Pcrm	Position counter reset mode

Definition at line 958 of file qep.h.

References QEP_QEPCTL_PCRM, and _QEP_Obj_::QEPCTL.

void QEP_set_posn_init_count	(	QEP_Handle	qepHandle,
		const uint32_t	init_count
	)

inline

Sets initial position counter value.

Parameters

[in]	qepHandle	Handle to QEP object
[in]	init_count	initial counter value

Definition at line 971 of file qep.h.

References _QEP_Obj_::QPOSINIT.

void QEP_set_QEP_source	(	QEP_Handle	qepHandle,
		const QEP_Qsrc_e	QEP_Qsrc
	)

inline

QEP counting mode.

Parameters

[in]	qepHandle	Handle to QEP object
[in]	QEP_Qsrc	Sets QEP counting mode

Definition at line 1137 of file qep.h.

References _QEP_Obj_::QDECCTL, and QEP_QDECCTL_QSRC.

void QEP_set_select_sync_pin	(	QEP_Handle	qepHandle,
		const QEP_Spsel_e	QEP_SPsel
	)

inline

Selects whether index or strobe pin is used for sync output.

Parameters

[in]	qepHandle	Handle to QEP object
[in]	QEP_SPsel	Selected pin

Definition at line 983 of file qep.h.

References _QEP_Obj_::QDECCTL, and QEP_QDECCTL_SPSEL.

void QEP_set_soft_init	(	QEP_Handle	qepHandle,
		const QEPCTL_Swi_e	QEPCTL_Swi
	)

inline

Determines if software initialization of position counter enabled.

Parameters

[in]	qepHandle	Handle to QEP object
[in]	QEPCTL_Swi	Enable/disable position counter initialization

Definition at line 996 of file qep.h.

References QEP_QEPCTL_SWI, and _QEP_Obj_::QEPCTL.

void QEP_set_strobe_event_init	(	QEP_Handle	qepHandle,
		const QEPCTL_Sei_e	QEPCTL_Sei
	)

inline

Determines strobe initialization of position counter.

Parameters

[in]	qepHandle	Handle to QEP object
[in]	QEPCTL_Sei	Strobe initialization of position counter (disabled, rising edge of QEPI) or rising/falling depending on direction

Definition at line 1009 of file qep.h.

References QEP_QEPCTL_SEI, and _QEP_Obj_::QEPCTL.

void QEP_set_strobe_event_latch	(	QEP_Handle	qepHandle,
		const QEPCTL_Sel_e	QEPCTL_Sel
	)

inline

Sets up strobe latch of position counter.

Parameters

[in]	qepHandle	Handle to QEP object
[in]	QEPCTL_Sel	Sets strobe latch of position counter

Definition at line 1022 of file qep.h.

References QEP_QEPCTL_SEL, and _QEP_Obj_::QEPCTL.

void QEP_set_strobe_polarity	(	QEP_Handle	qepHandle,
		const QEP_Qsp_e	QEP_Qsp
	)

inline

Sets up strobe polarity.

Parameters

[in]	qepHandle	Handle to QEP object
[in]	QEP_Qsp	Strobe polarity

Definition at line 1035 of file qep.h.

References _QEP_Obj_::QDECCTL, and QEP_QDECCTL_QSP.

void QEP_set_swap_quad_inputs	(	QEP_Handle	qepHandle,
		QEP_Swap_e	QEP_Swap
	)

inline

Sets up swapping of A/B channels.

Parameters

[in]	qepHandle	Handle to QEP object
[in]	QEP_Swap	Swap/don't swap A/B channels

Definition at line 1048 of file qep.h.

References _QEP_Obj_::QDECCTL, and QEP_QDECCTL_SWAP.

void QEP_set_synch_output_compare_polarity	(	QEP_Handle	qepHandle,
		const QPOSCTL_Pcpol_e	QPOSCTL_Pcpol
	)

inline

Sets synch output compare polarity.

Parameters

[in]	qepHandle	Handle to QEP object
[in]	QPOSCTL_Pcpol	Polarity of sync output

Definition at line 1061 of file qep.h.

References QEP_QPOSCTL_PCPOL, and _QEP_Obj_::QPOSCTL.

void QEP_set_unit_period	(	QEP_Handle	qepHandle,
		const uint32_t	unit_period
	)

inline

Sets unit timer period.

Parameters

[in]	qepHandle	Handle to QEP object
[in]	unit_period	Unit period

Definition at line 1074 of file qep.h.

References _QEP_Obj_::QUPRD.

void QEP_set_unit_posn_prescale	(	QEP_Handle	qepHandle,
		const QCAPCTL_Upps_e	QCAPCTL_Upps
	)

inline

Sets unit timer prescaling.

Parameters

[in]	qepHandle	Handle to QEP object
[in]	QCAPCTL_Upps	Unit timer prescaling

Definition at line 1086 of file qep.h.

References _QEP_Obj_::QCAPCTL, and QEP_QCAPCTL_UPPS.

void QEP_set_watchdog_period	(	QEP_Handle	qepHandle,
		const uint16_t	watchdog_period
	)

inline

Sets watchdog period.

Parameters

[in]	qepHandle	Handle to QEP object
[in]	watchdog_period	Watchdog period

Definition at line 1099 of file qep.h.

References _QEP_Obj_::QWDPRD.

void QEP_setup_strobe_event_latch	(	QEP_Handle	qepHandle,
		const QEPCTL_Sel_e	QEPCTL_Sel
	)

inline

QEP strobe latch event.

Parameters

[in]	qepHandle	Handle to QEP object
[in]	QEPCTL_Sel	Sets QEP strobe latch event

Definition at line 1152 of file qep.h.

References QEP_QEPCTL_SEL, and _QEP_Obj_::QEPCTL.

void QEP_write_posn_compare	(	QEP_Handle	qepHandle,
		const uint32_t	posn
	)

inline

Writes a value to the position compare register.

Parameters

[in]	qepHandle	Handle to QEP object
[in]	posn	Position compare register value

Definition at line 1166 of file qep.h.

References _QEP_Obj_::QPOSCMP.

Data Structures

Macros

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Enumerations

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