CTSU v2 Interface

Interface for Capacitive Touch Controllers. More...

Data Structures
struct	ctsu_callback_args_t
struct	ctsu_element_cfg_t
struct	ctsu_cfg_t
struct	ctsu_api_t
struct	ctsu_instance_t

Typedefs
typedef void	ctsu_ctrl_t

Enumerations
enum	ctsu_event_t { CTSU_EVENT_SCAN_COMPLETE = 0x00U, CTSU_EVENT_OVERFLOW = 0x01U, CTSU_EVENT_ICOMP = 0x02U }
enum	ctsu_cap_t { CTSU_CAP_SOFTWARE, CTSU_CAP_EXTERNAL }
enum	ctsu_atune1_t { CTSU_ATUNE1_NORMAL = 0U, CTSU_ATUNE1_HIGH }
enum	ctsu_md_t { CTSU_MODE_SELF_MULTI_SCAN = 1U, CTSU_MODE_MUTUAL_FULL_SCAN = 3U, CTSU_MODE_DIAGNOSIS_SCAN = 33 }
enum	ctsu_ssdiv_t {   CTSU_SSDIV_4000, CTSU_SSDIV_2000, CTSU_SSDIV_1330, CTSU_SSDIV_1000,   CTSU_SSDIV_0800, CTSU_SSDIV_0670, CTSU_SSDIV_0570, CTSU_SSDIV_0500,   CTSU_SSDIV_0440, CTSU_SSDIV_0400, CTSU_SSDIV_0360, CTSU_SSDIV_0330,   CTSU_SSDIV_0310, CTSU_SSDIV_0290, CTSU_SSDIV_0270, CTSU_SSDIV_0000 }

Detailed Description

Interface for Capacitive Touch Controllers.

Summary

The CTSU v2 interface provides the functionality necessary to open, close, run and control the CTSU depending upon the configuration passed as arguments.

Implemented by: CTSU v2

Related SSP architecture topics:

• SSP Interfaces
• SSP Predefined Layers
• Using SSP Modules

CTSU v2 Interface description: CTSU v2 Driver

Typedef Documentation

ctsu_ctrl_t

typedef void ctsu_ctrl_t

CTSU Control block. Allocate an instance specific control block to pass into the API calls.

Implemented as

• ctsu_instance_ctrl_t

Enumeration Type Documentation

ctsu_atune1_t

enum ctsu_atune1_t

CTSU Power Supply Capacity Adjustment

Enumerator
CTSU_ATUNE1_NORMAL	Normal output (40uA)
CTSU_ATUNE1_HIGH	High-current output (80uA)

ctsu_cap_t

enum ctsu_cap_t

CTSU Scan Start Trigger Select

Enumerator
CTSU_CAP_SOFTWARE	Scan start by software trigger.
CTSU_CAP_EXTERNAL	Scan start by external trigger.

ctsu_event_t

enum ctsu_event_t

CTSU Events for callback function

Enumerator
CTSU_EVENT_SCAN_COMPLETE	Normal end.
CTSU_EVENT_OVERFLOW	Sensor counter overflow (CTSUST.CTSUSOVF set)
CTSU_EVENT_ICOMP	Abnormal TSCAP voltage (CTSUERRS.CTSUICOMP set)

ctsu_md_t

enum ctsu_md_t

CTSU Measurement Mode Select

Enumerator
CTSU_MODE_SELF_MULTI_SCAN	Self-capacitance multi scan mode.
CTSU_MODE_MUTUAL_FULL_SCAN	Mutual capacitance full scan mode.
CTSU_MODE_DIAGNOSIS_SCAN	Diagnosis scan mode.

ctsu_ssdiv_t

enum ctsu_ssdiv_t

CTSU Spectrum Diffusion Frequency Division Setting

Enumerator
CTSU_SSDIV_4000	4.00 <= Base clock frequency (MHz)
CTSU_SSDIV_2000	2.00 <= Base clock frequency (MHz) < 4.00
CTSU_SSDIV_1330	1.33 <= Base clock frequency (MHz) < 2.00
CTSU_SSDIV_1000	1.00 <= Base clock frequency (MHz) < 1.33
CTSU_SSDIV_0800	0.80 <= Base clock frequency (MHz) < 1.00
CTSU_SSDIV_0670	0.67 <= Base clock frequency (MHz) < 0.80
CTSU_SSDIV_0570	0.57 <= Base clock frequency (MHz) < 0.67
CTSU_SSDIV_0500	0.50 <= Base clock frequency (MHz) < 0.57
CTSU_SSDIV_0440	0.44 <= Base clock frequency (MHz) < 0.50
CTSU_SSDIV_0400	0.40 <= Base clock frequency (MHz) < 0.44
CTSU_SSDIV_0360	0.36 <= Base clock frequency (MHz) < 0.40
CTSU_SSDIV_0330	0.33 <= Base clock frequency (MHz) < 0.36
CTSU_SSDIV_0310	0.31 <= Base clock frequency (MHz) < 0.33
CTSU_SSDIV_0290	0.29 <= Base clock frequency (MHz) < 0.31
CTSU_SSDIV_0270	0.27 <= Base clock frequency (MHz) < 0.29
CTSU_SSDIV_0000	0.00 <= Base clock frequency (MHz) < 0.27