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120 lines
6.2 KiB
120 lines
6.2 KiB
/******************************************************************************************** |
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* drivers/input/tsc2007.h |
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* |
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* Copyright (C) 2011-2012 Gregory Nutt. All rights reserved. |
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* Author: Gregory Nutt <gnutt@nuttx.org> |
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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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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in |
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* the documentation and/or other materials provided with the |
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* distribution. |
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* 3. Neither the name NuttX nor the names of its contributors may be |
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* used to endorse or promote products derived from this software |
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* without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS |
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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* POSSIBILITY OF SUCH DAMAGE. |
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* |
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********************************************************************************************/ |
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/* The TSC2007 is an analog interface circuit for a human interface touch screen device. |
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* All peripheral functions are controlled through the command byte and onboard state |
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* machines. |
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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 positionn */ |
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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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#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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