130 lines
4.4 KiB
C
130 lines
4.4 KiB
C
/****************************************************************************
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* include/nuttx/input/cypress_mbr3108.h
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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#ifndef __INCLUDE_NUTTX_INPUT_CYPRESS_MBR3108_H
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#define __INCLUDE_NUTTX_INPUT_CYPRESS_MBR3108_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/compiler.h>
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#include <stdbool.h>
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#include <stdint.h>
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/****************************************************************************
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* Public Types
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****************************************************************************/
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/* Sensor configuration for Cypress MBR3108 device */
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begin_packed_struct struct mbr3108_sensor_conf_s
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{
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uint8_t conf_data[128]; /* Sensor configuration, generated with EZ-Click. */
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} end_packed_struct;
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/* Debug configuration */
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begin_packed_struct struct mbr3108_debug_conf_s
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{
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bool debug_mode; /* Configure to debug mode if 'true'. */
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uint8_t debug_sensor_id; /* Sensor to read in debug mode. */
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} end_packed_struct;
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/* Write commands to MBR3108 driver. */
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begin_packed_struct enum mbr3108_cmd_e
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{
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CYPRESS_MBR3108_CMD_SENSOR_CONF = -3,
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CYPRESS_MBR3108_CMD_DEBUG_CONF,
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CYPRESS_MBR3108_CMD_CLEAR_LATCHED,
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} end_packed_struct;
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/* CYPRESS_MBR3108_CMD_SENSOR_CONF command structure.
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* Used to reconfigure chip with new configuration generated using
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* EZ-Click tool.
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*/
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begin_packed_struct struct mbr3108_cmd_sensor_conf_s
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{
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enum mbr3108_cmd_e id;
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struct mbr3108_sensor_conf_s conf;
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} end_packed_struct;
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/* CYPRESS_MBR3108_CMD_DEBUG_CONF command structure.
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* Use to enable debug output from chip/sensor,
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* see 'struct mbr3108_sensor_data_s'.
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*/
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begin_packed_struct struct mbr3108_cmd_debug_conf_s
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{
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enum mbr3108_cmd_e id;
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struct mbr3108_debug_conf_s conf;
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} end_packed_struct;
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/* Sensor status output */
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begin_packed_struct struct mbr3108_sensor_status_s
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{
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unsigned int button:8; /* MBR3108 has maximum of 8 button sensors
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* configurable.
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* Each bit in this field indicate if
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* corresponding button is pressed. */
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unsigned int latched_button:8;
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unsigned int proximity:2; /* MBR3108 has maximum of 2 proximity
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* sensors configurable. */
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unsigned int latched_proximity:2;
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} end_packed_struct;
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/* Sensor debug data output */
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begin_packed_struct struct mbr3108_sensor_debug_s
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{
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uint8_t sensor_total_capacitance;
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uint16_t sensor_diff_counts;
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uint16_t sensor_baseline;
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uint16_t sensor_raw_counts;
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uint16_t sensor_average_counts;
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} end_packed_struct;
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/* Board configuration */
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struct mbr3108_board_s
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{
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int (*irq_attach) (FAR struct mbr3108_board_s *state,
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xcpt_t isr,
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FAR void *arg);
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void (*irq_enable) (FAR struct mbr3108_board_s *state, bool enable);
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int (*set_power) (FAR struct mbr3108_board_s *state, bool on);
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};
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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/* Device registration */
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int cypress_mbr3108_register(FAR const char *devpath,
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FAR struct i2c_master_s *dev,
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uint8_t i2c_devaddr,
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struct mbr3108_board_s *board_config,
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const struct mbr3108_sensor_conf_s *sensor_conf);
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#endif /* __INCLUDE_NUTTX_INPUT_CYPRESS_MBR3108_H */
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