at42qt1060.c File Reference

#include "board.h"
#include "gpio.h"
#include "conf_at42qt1060.h"
#include "at42qt1060.h"
#include "intc.h"
#include "cycle_counter.h"
#include "twim.h"

Functions
void	at42qt1060_detect_int_handler (void)
	Interrupt handler for the pin interrupt-. More...
uint8_t	at42qt1060_get_detect_status (void)
	Gets the touch detect status of the sensor. More...
uint8_t	at42qt1060_get_status (void)
void	at42qt1060_init (int32_t fcpu)
	Initialize touch sensor with default configuration values. More...
uint8_t	at42qt1060_read_reg (uint8_t reg_index)
	Read device register content. More...
void	at42qt1060_register_int (void(*touch_detect_callback)(void))
	Register a normal pin interrupt for the touch event. More...
void	at42qt1060_write_reg (uint8_t reg_index, uint8_t data)
	Write device register content. More...

Variables
struct {
void(*   touch_detect_callback )(void)
}	at42qt1060
	Local driver data. More...
static uint32_t	cpu_hz

void at42qt1060_detect_int_handler

(

void

)

Interrupt handler for the pin interrupt-.

References at42qt1060, AT42QT1060_DETECT_PIN, gpio_clear_pin_interrupt_flag(), and gpio_get_pin_interrupt_flag().

Referenced by at42qt1060_register_int().

uint8_t at42qt1060_get_detect_status

(

void

)

Gets the touch detect status of the sensor.

Returns

Register content of the touch detect register.

References AT42QT1060_DETECTION_STATUS, AT42QT1060_INPUT_PORT_STATUS, and at42qt1060_read_reg().

Referenced by at42qt1060_init().

uint8_t at42qt1060_get_status

(

void

)

References twi_package_t::addr_length, AT42QT1060_TWI, AT42QT1060_TWI_ADDRESS, twi_package_t::buffer, twi_package_t::chip, twi_package_t::length, MSB, and twi_master_read().

void at42qt1060_init

(

int32_t

fcpu

)

Initialize touch sensor with default configuration values.

References AT42QT1060_DETECT_INTEGRATOR_VALUE, AT42QT1060_DI, at42qt1060_get_detect_status(), AT42QT1060_IO_MASK, AT42QT1060_KEY_0_NTHR, AT42QT1060_KEY_0_NTHR_VALUE, AT42QT1060_KEY_1_NTHR, AT42QT1060_KEY_1_NTHR_VALUE, AT42QT1060_KEY_2_NTHR, AT42QT1060_KEY_2_NTHR_VALUE, AT42QT1060_KEY_3_NTHR, AT42QT1060_KEY_3_NTHR_VALUE, AT42QT1060_KEY_4_NTHR, AT42QT1060_KEY_4_NTHR_VALUE, AT42QT1060_KEY_5_NTHR, AT42QT1060_KEY_5_NTHR_VALUE, AT42QT1060_KEY_MASK, AT42QT1060_KEY_MASK_VALUE, AT42QT1060_LP_MODE, at42qt1060_read_reg(), at42qt1060_write_reg(), and cpu_hz.

Referenced by controller_init().

uint8_t at42qt1060_read_reg

(

uint8_t

reg_index

)

Read device register content.

Read register data.

Parameters

reg_index

Register address.

Returns

Register content.

References twi_package_t::addr_length, AT42QT1060_TWI, AT42QT1060_TWI_ADDRESS, twi_package_t::buffer, twi_package_t::chip, cpu_delay_us(), cpu_hz, twi_package_t::length, twi_master_read(), twi_master_write(), and TWI_SUCCESS.

Referenced by at42qt1060_get_detect_status(), at42qt1060_init(), and controller_task().

void at42qt1060_register_int

(

void(*)(void)

touch_detect_callback

)

Register a normal pin interrupt for the touch event.

Register a pin interrupt handler.

References at42qt1060, at42qt1060_detect_int_handler(), AT42QT1060_DETECT_PIN, Disable_global_interrupt, Enable_global_interrupt, gpio_clear_pin_interrupt_flag(), gpio_enable_pin_interrupt(), GPIO_FALLING_EDGE, INTC_register_interrupt(), and touch_detect_callback.

void at42qt1060_write_reg	(	uint8_t	reg_index,
		uint8_t	data
	)

Write device register content.

Write data to a sensor register.

Parameters

reg_index	Register address. Use macros as defined in the header file.
data	Data that should be written to the device register.

References twi_package_t::addr_length, AT42QT1060_TWI, AT42QT1060_TWI_ADDRESS, twi_package_t::buffer, twi_package_t::chip, twi_package_t::length, twi_master_write(), and TWI_SUCCESS.

Referenced by at42qt1060_init().

struct { ... } at42qt1060

Initial value:

=
{
  .touch_detect_callback = NULL
}

Local driver data.

Referenced by at42qt1060_detect_int_handler(), and at42qt1060_register_int().

uint32_t cpu_hz

static

Referenced by at42qt1060_init(), and at42qt1060_read_reg().

void(* touch_detect_callback)(void)

Referenced by at42qt1060_register_int(), and controller_detect_int_handler().