/******************************************************************************************** * drivers/input/tsc2007.h * * Copyright (C) 2011-2012 Gregory Nutt. All rights reserved. * Author: Gregory Nutt * * References: * "1.2V to 3.6V, 12-Bit, Nanopower, 4-Wire Micro TOUCH SCREEN CONTROLLER * with I2C Interface," SBAS405A March 2007, Revised, March 2009, Texas * Instruments Incorporated * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * 3. Neither the name NuttX nor the names of its contributors may be * used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. * ********************************************************************************************/ /* The TSC2007 is an analog interface circuit for a human interface touch screen device. * All peripheral functions are controlled through the command byte and onboard state * machines. */ #ifndef __DRIVERS_INPUT_TSC2007_H #define __DRIVERS_INPUT_TSC2007_H /******************************************************************************************** * Included Files ********************************************************************************************/ /******************************************************************************************** * Pre-processor Definitions ********************************************************************************************/ /* TSC2007 Address */ #define TSC2007_ADDRESS_MASK (0xf8) /* Bits 3-7: Invariant part of TSC2007 address */ #define TSC2007_ADDRESS (0x90) /* Bits 3-7: Always set at '10010' */ #define TSC2007_A1 (1 << 2) /* Bit 2: A1 */ #define TSC2007_A0 (1 << 1) /* Bit 1: A1 */ #define TSC2007_READ (1 << 0) /* Bit0=1: Selects read operation */ #define TSC2007_WRITE (0) /* Bit0=0: Selects write operation */ /* TSC2007 Command Byte */ #define TSC2007_CMD_FUNC_SHIFT (4) /* Bits 4-7: Converter function select bits */ #define TSC2007_CMD_FUNC_MASK (15 << TSC2007_CMD_FUNC_SHIFT) # define TSC2007_CMD_FUNC_TEMP0 (0 << TSC2007_CMD_FUNC_SHIFT) /* Measure TEMP0 */ # define TSC2007_CMD_FUNC_AUX (2 << TSC2007_CMD_FUNC_SHIFT) /* Measure AUX */ # define TSC2007_CMD_FUNC_TEMP1 (4 << TSC2007_CMD_FUNC_SHIFT) /* Measure TEMP1 */ # define TSC2007_CMD_FUNC_XON (8 << TSC2007_CMD_FUNC_SHIFT) /* Activate X-drivers */ # define TSC2007_CMD_FUNC_YON (9 << TSC2007_CMD_FUNC_SHIFT) /* Activate Y-drivers */ # define TSC2007_CMD_FUNC_YXON (10 << TSC2007_CMD_FUNC_SHIFT) /* Activate Y+, X-drivers */ # define TSC2007_CMD_FUNC_SETUP (11 << TSC2007_CMD_FUNC_SHIFT) /* Setup command */ # define TSC2007_CMD_FUNC_XPOS (12 << TSC2007_CMD_FUNC_SHIFT) /* Measure X position */ # define TSC2007_CMD_FUNC_YPOS (13 << TSC2007_CMD_FUNC_SHIFT) /* Measure Y position */ # define TSC2007_CMD_FUNC_Z1POS (14 << TSC2007_CMD_FUNC_SHIFT) /* Measure Z1 position */ # define TSC2007_CMD_FUNC_Z2POS (15 << TSC2007_CMD_FUNC_SHIFT) /* Measure Z2 positionn */ #define TSC2007_CMD_PWRDN_SHIFT (2) /* Bits 2-3: Power-down bits */ #define TSC2007_CMD_PWRDN_MASK (3 << TSC2007_CMD_PWRDN_SHIFT) # define TSC2007_CMD_PWRDN_IRQEN (0 << TSC2007_CMD_PWRDN_SHIFT) /* 00: Power down between cycles; PENIRQ enabled */ # define TSC2007_CMD_ADCON_IRQDIS (1 << TSC2007_CMD_PWRDN_SHIFT) /* 01: A/D converter on; PENIRQ disabled */ # define TSC2007_CMD_ADCOFF_IRQEN (2 << TSC2007_CMD_PWRDN_SHIFT) /* 10: A/D converter off; PENIRQ enabled. */ /* 11: A/D converter on; PENIRQ disabled. */ #define TSC2007_CMD_12BIT (0) /* Bit 1: 0=12-bit */ #define TSC2007_CMD_8BIT (1 << 1) /* Bit 1: 1=8-bit */ /* Bit 0: Don't care */ /* TSC2007 Setup Command */ #define TSC2007_SETUP_CMD TSC2007_CMD_FUNC_SETUP /* Bits 4-7: Setup command */ /* Bits 2-3: Must be zero */ #define TSC2007_CMD_USEMAV (0) /* Bit 1: 0: Use the onboard MAV filter (default) */ #define TSC2007_CMD_BYPASSMAV (1 << 1) /* Bit 1: 1: Bypass the onboard MAV filter */ #define TSC2007_CMD_PU_50KOHM (0) /* Bit 0: 0: RIRQ = 50kOhm (default). */ #define TSC2007_CMD_PU_90KOHM (1 << 1) /* Bit 0: 1: 1: RIRQ = 90kOhm */ /******************************************************************************************** * Public Types ********************************************************************************************/ /******************************************************************************************** * Public Function Prototypes ********************************************************************************************/ #ifdef __cplusplus #define EXTERN extern "C" extern "C" { #else #define EXTERN extern #endif #undef EXTERN #ifdef __cplusplus } #endif #endif /* __DRIVERS_INPUT_TSC2007_H */