65 lines
2.1 KiB
C
65 lines
2.1 KiB
C
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/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id: $
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*
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* Copyright (C) 2007 by Jonathan Gordon
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*
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* All files in this archive are subject to the GNU General Public License.
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* See the file COPYING in the source tree root for full license agreement.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include "config.h"
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#include "cpu.h"
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#include "system.h"
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#include "spi.h"
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#include "tsc2100.h"
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/* Read X, Y, Z1, Z2 touchscreen coordinates. */
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void tsc2100_read_values(short *x, short* y, short *z1, short *z2)
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{
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int page = 0, address = 0;
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unsigned short command = 0x8000|(page << 11)|(address << 5);
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unsigned char out[] = {command >> 8, command & 0xff};
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unsigned char in[8];
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spi_block_transfer(out, sizeof(out), in, sizeof(in));
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*x = (in[0]<<8)|in[1];
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*y = (in[2]<<8)|in[3];
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*z1 = (in[4]<<8)|in[5];
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*z2 = (in[6]<<8)|in[7];
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}
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short tsc2100_readreg(int page, int address)
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{
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unsigned short command = 0x8000|(page << 11)|(address << 5);
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unsigned char out[] = {command >> 8, command & 0xff};
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unsigned char in[2];
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spi_block_transfer(out, sizeof(out), in, sizeof(in));
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return (in[0]<<8)|in[1];
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}
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void tsc2100_writereg(int page, int address, short value)
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{
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unsigned short command = 0x8000|(page << 11)|(address << 5);
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unsigned char out[4] = {command >> 8, command & 0xff,
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value >> 8, value & 0xff};
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spi_block_transfer(out, sizeof(out), NULL, 0);
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}
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void tsc2100_keyclick(void)
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{
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// 1100 0100 0001 0000
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short val = 0xC410;
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tsc2100_writereg(TSAC2_PAGE, TSAC2_ADDRESS, val);
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}
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