More typos, added mcp3004/mcp3008
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3
People
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@ -28,3 +28,6 @@ Xian Stannard
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Andre Crone
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Suggested the __WIRING_PI.H__ round wiringPi.h
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Rik Teerling
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Pointing out some silly mistooks in the I2C code...
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@ -43,6 +43,10 @@
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#include <sr595.h>
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#include <pcf8591.h>
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#include <pcf8574.h>
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#include <mcp3002.h>
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#include <mcp3004.h>
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#include <mcp4802.h>
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#include <mcp3422.h>
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#include "extensions.h"
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@ -330,6 +334,128 @@ static int doExtensionPcf8591 (char *progName, int pinBase, char *params)
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}
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/*
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* doExtensionMcp3002:
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* Analog IO
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* mcp3002:base:spiChan
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*********************************************************************************
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*/
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static int doExtensionMcp3002 (char *progName, int pinBase, char *params)
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{
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int spi ;
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if ((params = extractInt (progName, params, &spi)) == NULL)
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return FALSE ;
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if ((spi < 0) || (spi > 1))
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{
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fprintf (stderr, "%s: SPI channel (%d) out of range\n", progName, spi) ;
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return FALSE ;
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}
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mcp3002Setup (pinBase, spi) ;
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return TRUE ;
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}
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/*
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* doExtensionMcp3004:
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* Analog IO
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* mcp3004:base:spiChan
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*********************************************************************************
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*/
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static int doExtensionMcp3004 (char *progName, int pinBase, char *params)
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{
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int spi ;
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if ((params = extractInt (progName, params, &spi)) == NULL)
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return FALSE ;
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if ((spi < 0) || (spi > 1))
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{
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fprintf (stderr, "%s: SPI channel (%d) out of range\n", progName, spi) ;
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return FALSE ;
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}
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mcp3004Setup (pinBase, spi) ;
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return TRUE ;
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}
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/*
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* doExtensionMcp4802:
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* Analog IO
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* mcp4802:base:spiChan
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*********************************************************************************
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*/
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static int doExtensionMcp4802 (char *progName, int pinBase, char *params)
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{
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int spi ;
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if ((params = extractInt (progName, params, &spi)) == NULL)
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return FALSE ;
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if ((spi < 0) || (spi > 1))
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{
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fprintf (stderr, "%s: SPI channel (%d) out of range\n", progName, spi) ;
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return FALSE ;
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}
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mcp4802Setup (pinBase, spi) ;
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return TRUE ;
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}
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/*
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* doExtensionMcp3422:
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* Analog IO
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* mcp3422:base:i2cAddr
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*********************************************************************************
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*/
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static int doExtensionMcp3422 (char *progName, int pinBase, char *params)
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{
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int i2c, sampleRate, gain ;
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if ((params = extractInt (progName, params, &i2c)) == NULL)
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return FALSE ;
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if ((i2c < 0x03) || (i2c > 0x77))
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{
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fprintf (stderr, "%s: i2c address (0x%X) out of range\n", progName, i2c) ;
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return FALSE ;
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}
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if ((params = extractInt (progName, params, &sampleRate)) == NULL)
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return FALSE ;
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if ((sampleRate < 0) || (sampleRate > 3))
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{
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fprintf (stderr, "%s: sample rate (%d) out of range\n", progName, sampleRate) ;
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return FALSE ;
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}
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if ((params = extractInt (progName, params, &gain)) == NULL)
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return FALSE ;
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if ((gain < 0) || (gain > 3))
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{
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fprintf (stderr, "%s: gain (%d) out of range\n", progName, gain) ;
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return FALSE ;
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}
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mcp3422Setup (pinBase, i2c, sampleRate, gain) ;
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return TRUE ;
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}
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/*
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* Function list
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*********************************************************************************
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@ -345,6 +471,10 @@ struct extensionFunctionStruct extensionFunctions [] =
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{ "sr595", &doExtensionSr595 },
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{ "pcf8574", &doExtensionPcf8574 },
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{ "pcf8591", &doExtensionPcf8591 },
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{ "mcp3002", &doExtensionMcp3002 },
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{ "mcp3004", &doExtensionMcp3004 },
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{ "mcp4802", &doExtensionMcp4802 },
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{ "mcp3422", &doExtensionMcp3422 },
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{ NULL, NULL },
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} ;
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@ -48,7 +48,7 @@ extern int wiringPiDebug ;
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# define FALSE (1==2)
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#endif
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#define VERSION "2.05"
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#define VERSION "2.06"
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#define I2CDETECT "/usr/sbin/i2cdetect"
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static int wpMode ;
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@ -51,7 +51,7 @@ SRC = wiringPi.c \
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mcp23s08.c mcp23s17.c \
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sr595.c \
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pcf8574.c pcf8591.c \
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mcp3002.c mcp4802.c mcp3422.c \
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mcp3002.c mcp3004.c mcp4802.c mcp3422.c \
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drc.c
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OBJ = $(SRC:.c=.o)
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@ -102,6 +102,7 @@ install-headers:
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@install -m 0644 mcp23s08.h $(DESTDIR)$(PREFIX)/include
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@install -m 0644 mcp23s17.h $(DESTDIR)$(PREFIX)/include
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@install -m 0644 mcp3002.h $(DESTDIR)$(PREFIX)/include
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@install -m 0644 mcp3004.h $(DESTDIR)$(PREFIX)/include
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@install -m 0644 mcp4802.h $(DESTDIR)$(PREFIX)/include
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@install -m 0644 mcp3422.h $(DESTDIR)$(PREFIX)/include
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@install -m 0644 sr595.h $(DESTDIR)$(PREFIX)/include
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@ -138,6 +139,7 @@ uninstall:
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@rm -f $(DESTDIR)$(PREFIX)/include/mcp23s08.h
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@rm -f $(DESTDIR)$(PREFIX)/include/mcp23s17.h
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@rm -f $(DESTDIR)$(PREFIX)/include/mcp3002.h
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@rm -f $(DESTDIR)$(PREFIX)/include/mcp3004.h
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@rm -f $(DESTDIR)$(PREFIX)/include/mcp4802.h
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@rm -f $(DESTDIR)$(PREFIX)/include/mcp3422.h
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@rm -f $(DESTDIR)$(PREFIX)/include/sr595.h
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@ -0,0 +1,73 @@
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/*
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* mcp3004.c:
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* Extend wiringPi with the MCP3004 SPI Analog to Digital convertor
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* Copyright (c) 2012-2013 Gordon Henderson
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***********************************************************************
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* This file is part of wiringPi:
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* https://projects.drogon.net/raspberry-pi/wiringpi/
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*
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* wiringPi is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as
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* published by the Free Software Foundation, either version 3 of the
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* License, or (at your option) any later version.
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*
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* wiringPi is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with wiringPi.
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* If not, see <http://www.gnu.org/licenses/>.
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***********************************************************************
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*/
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#include <wiringPi.h>
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#include <wiringPiSPI.h>
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#include "mcp3004.h"
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/*
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* myAnalogRead:
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* Return the analog value of the given pin
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*********************************************************************************
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*/
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static int myAnalogRead (struct wiringPiNodeStruct *node, int pin)
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{
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unsigned char spiData [2] ;
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unsigned char chanBits ;
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int chan = pin - node->pinBase ;
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chanBits = 0b11000000 | (chan << 3) ;
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spiData [0] = chanBits ;
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spiData [1] = 0 ;
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wiringPiSPIDataRW (node->fd, spiData, 2) ;
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return ((spiData [0] << 7) | (spiData [1] >> 1)) & 0x3FF ;
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}
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/*
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* mcp3004Setup:
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* Create a new wiringPi device node for an mcp3004 on the Pi's
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* SPI interface.
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*********************************************************************************
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*/
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int mcp3004Setup (const int pinBase, int spiChannel)
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{
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struct wiringPiNodeStruct *node ;
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if (wiringPiSPISetup (spiChannel, 1000000) < 0)
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return -1 ;
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node = wiringPiNewNode (pinBase, 8) ;
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node->fd = spiChannel ;
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node->analogRead = myAnalogRead ;
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return 0 ;
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}
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@ -0,0 +1,33 @@
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/*
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* mcp3004.c:
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* Extend wiringPi with the MCP3004 SPI Analog to Digital convertor
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* Copyright (c) 2012-2013 Gordon Henderson
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***********************************************************************
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* This file is part of wiringPi:
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* https://projects.drogon.net/raspberry-pi/wiringpi/
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*
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* wiringPi is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as
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* published by the Free Software Foundation, either version 3 of the
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* License, or (at your option) any later version.
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*
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* wiringPi is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with wiringPi.
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* If not, see <http://www.gnu.org/licenses/>.
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***********************************************************************
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*/
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#ifdef __cplusplus
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extern "C" {
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#endif
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extern int mcp3004Setup (int pinBase, int spiChannel) ;
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#ifdef __cplusplus
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}
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#endif
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@ -1,6 +1,7 @@
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/*
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* mcp3422.c:
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* Extend wiringPi with the MCP3422 I2C ADC chip
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* Also works for the MCP3423 and MCP3224 (4 channel) chips
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* Copyright (c) 2013 Gordon Henderson
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***********************************************************************
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* This file is part of wiringPi:
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@ -98,7 +99,7 @@ int myAnalogRead (struct wiringPiNodeStruct *node, int chan)
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*********************************************************************************
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*/
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int mcp3422Setup (int pinBase, int i2cAddress, int channels, int sampleRate, int gain)
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int mcp3422Setup (int pinBase, int i2cAddress, int sampleRate, int gain)
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{
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int fd ;
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struct wiringPiNodeStruct *node ;
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@ -106,7 +107,7 @@ int mcp3422Setup (int pinBase, int i2cAddress, int channels, int sampleRate, int
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if ((fd = wiringPiI2CSetup (i2cAddress)) < 0)
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return fd ;
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node = wiringPiNewNode (pinBase, channels) ;
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node = wiringPiNewNode (pinBase, 4) ;
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node->data0 = sampleRate ;
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node->data1 = gain ;
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@ -36,7 +36,7 @@
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extern "C" {
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#endif
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extern int mcp3422Setup (int pinBase, int i2cAddress, int channels, int sampleRate, int gain) ;
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extern int mcp3422Setup (int pinBase, int i2cAddress, int sampleRate, int gain) ;
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#ifdef __cplusplus
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}
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