113 lines
5.2 KiB
C
113 lines
5.2 KiB
C
/****************************************************************************
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* drivers/input/tsc2007.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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/* The TSC2007 is an analog interface circuit for a human interface touch
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* screen device.
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* All peripheral functions are controlled through the command byte and
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* onboard state machines.
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*/
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/* References:
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* "1.2V to 3.6V, 12-Bit, Nanopower, 4-Wire Micro TOUCH SCREEN CONTROLLER
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* with I2C Interface," SBAS405A March 2007, Revised, March 2009, Texas
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* Instruments Incorporated
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*/
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#ifndef __DRIVERS_INPUT_TSC2007_H
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#define __DRIVERS_INPUT_TSC2007_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* TSC2007 Address */
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#define TSC2007_ADDRESS_MASK (0xf8) /* Bits 3-7: Invariant part of TSC2007 address */
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#define TSC2007_ADDRESS (0x90) /* Bits 3-7: Always set at '10010' */
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#define TSC2007_A1 (1 << 2) /* Bit 2: A1 */
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#define TSC2007_A0 (1 << 1) /* Bit 1: A1 */
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#define TSC2007_READ (1 << 0) /* Bit0=1: Selects read operation */
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#define TSC2007_WRITE (0) /* Bit0=0: Selects write operation */
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/* TSC2007 Command Byte */
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#define TSC2007_CMD_FUNC_SHIFT (4) /* Bits 4-7: Converter function select bits */
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#define TSC2007_CMD_FUNC_MASK (15 << TSC2007_CMD_FUNC_SHIFT)
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# define TSC2007_CMD_FUNC_TEMP0 (0 << TSC2007_CMD_FUNC_SHIFT) /* Measure TEMP0 */
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# define TSC2007_CMD_FUNC_AUX (2 << TSC2007_CMD_FUNC_SHIFT) /* Measure AUX */
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# define TSC2007_CMD_FUNC_TEMP1 (4 << TSC2007_CMD_FUNC_SHIFT) /* Measure TEMP1 */
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# define TSC2007_CMD_FUNC_XON (8 << TSC2007_CMD_FUNC_SHIFT) /* Activate X-drivers */
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# define TSC2007_CMD_FUNC_YON (9 << TSC2007_CMD_FUNC_SHIFT) /* Activate Y-drivers */
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# define TSC2007_CMD_FUNC_YXON (10 << TSC2007_CMD_FUNC_SHIFT) /* Activate Y+, X-drivers */
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# define TSC2007_CMD_FUNC_SETUP (11 << TSC2007_CMD_FUNC_SHIFT) /* Setup command */
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# define TSC2007_CMD_FUNC_XPOS (12 << TSC2007_CMD_FUNC_SHIFT) /* Measure X position */
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# define TSC2007_CMD_FUNC_YPOS (13 << TSC2007_CMD_FUNC_SHIFT) /* Measure Y position */
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# define TSC2007_CMD_FUNC_Z1POS (14 << TSC2007_CMD_FUNC_SHIFT) /* Measure Z1 position */
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# define TSC2007_CMD_FUNC_Z2POS (15 << TSC2007_CMD_FUNC_SHIFT) /* Measure Z2 position */
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#define TSC2007_CMD_PWRDN_SHIFT (2) /* Bits 2-3: Power-down bits */
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#define TSC2007_CMD_PWRDN_MASK (3 << TSC2007_CMD_PWRDN_SHIFT)
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# define TSC2007_CMD_PWRDN_IRQEN (0 << TSC2007_CMD_PWRDN_SHIFT) /* 00: Power down between cycles; PENIRQ enabled */
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# define TSC2007_CMD_ADCON_IRQDIS (1 << TSC2007_CMD_PWRDN_SHIFT) /* 01: A/D converter on; PENIRQ disabled */
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# define TSC2007_CMD_ADCOFF_IRQEN (2 << TSC2007_CMD_PWRDN_SHIFT) /* 10: A/D converter off; PENIRQ enabled. */
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/* 11: A/D converter on; PENIRQ disabled. */
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#define TSC2007_CMD_12BIT (0) /* Bit 1: 0=12-bit */
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#define TSC2007_CMD_8BIT (1 << 1) /* Bit 1: 1=8-bit */
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/* Bit 0: Don't care */
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/* TSC2007 Setup Command */
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#define TSC2007_SETUP_CMD TSC2007_CMD_FUNC_SETUP /* Bits 4-7: Setup command */
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/* Bits 2-3: Must be zero */
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#define TSC2007_CMD_USEMAV (0) /* Bit 1: 0: Use the onboard MAV filter (default) */
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#define TSC2007_CMD_BYPASSMAV (1 << 1) /* Bit 1: 1: Bypass the onboard MAV filter */
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#define TSC2007_CMD_PU_50KOHM (0) /* Bit 0: 0: RIRQ = 50kOhm (default). */
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#define TSC2007_CMD_PU_90KOHM (1 << 1) /* Bit 0: 1: 1: RIRQ = 90kOhm */
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/****************************************************************************
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* Public Types
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****************************************************************************/
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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#ifdef __cplusplus
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#define EXTERN extern "C"
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extern "C"
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{
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#else
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#define EXTERN extern
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#endif
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#undef EXTERN
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#ifdef __cplusplus
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}
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#endif
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#endif /* __DRIVERS_INPUT_TSC2007_H */
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