#include <pcf8591.h>
#include <pcf8574.h>
#include <max31855.h>
+#include <max5322.h>
#include <mcp3002.h>
#include <mcp3004.h>
#include <mcp4802.h>
}
+/*
+ * doExtensionMax5322:
+ * Analog O
+ * max5322:base:spiChan
+ *********************************************************************************
+ */
+
+static int doExtensionMax5322 (char *progName, int pinBase, char *params)
+{
+ int spi ;
+
+ if ((params = extractInt (progName, params, &spi)) == NULL)
+ return FALSE ;
+
+ if ((spi < 0) || (spi > 1))
+ {
+ fprintf (stderr, "%s: SPI channel (%d) out of range\n", progName, spi) ;
+ return FALSE ;
+ }
+
+ max5322Setup (pinBase, spi) ;
+
+ return TRUE ;
+}
+
+
/*
* doExtensionMcp4802:
* Analog IO
{ "mcp4802", &doExtensionMcp4802 },
{ "mcp3422", &doExtensionMcp3422 },
{ "max31855", &doExtensionMax31855 },
+ { "max5322", &doExtensionMax5322 },
{ NULL, NULL },
} ;
sr595.c \
pcf8574.c pcf8591.c \
mcp3002.c mcp3004.c mcp4802.c mcp3422.c \
- max31855.c \
+ max31855.c max5322.c \
drc.c
OBJ = $(SRC:.c=.o)
@install -m 0644 mcp23s08.h $(DESTDIR)$(PREFIX)/include
@install -m 0644 mcp23s17.h $(DESTDIR)$(PREFIX)/include
@install -m 0644 max31855.h $(DESTDIR)$(PREFIX)/include
+ @install -m 0644 max5322.h $(DESTDIR)$(PREFIX)/include
@install -m 0644 mcp3002.h $(DESTDIR)$(PREFIX)/include
@install -m 0644 mcp3004.h $(DESTDIR)$(PREFIX)/include
@install -m 0644 mcp4802.h $(DESTDIR)$(PREFIX)/include
@rm -f $(DESTDIR)$(PREFIX)/include/mcp23s08.h
@rm -f $(DESTDIR)$(PREFIX)/include/mcp23s17.h
@rm -f $(DESTDIR)$(PREFIX)/include/max31855.h
+ @rm -f $(DESTDIR)$(PREFIX)/include/max5322.h
@rm -f $(DESTDIR)$(PREFIX)/include/mcp3002.h
@rm -f $(DESTDIR)$(PREFIX)/include/mcp3004.h
@rm -f $(DESTDIR)$(PREFIX)/include/mcp4802.h
mcp4802.o: wiringPi.h wiringPiSPI.h mcp4802.h
mcp3422.o: wiringPi.h wiringPiI2C.h mcp3422.h
max31855.o: wiringPi.h wiringPiSPI.h max31855.h
+max5322.o: wiringPi.h wiringPiSPI.h max5322.h
drc.o: wiringPi.h wiringSerial.h drc.h
--- /dev/null
+/*
+ * max5322.c:
+ * Extend wiringPi with the MAX5322 SPI Digital to Analog convertor
+ * Copyright (c) 2012-2013 Gordon Henderson
+ ***********************************************************************
+ * This file is part of wiringPi:
+ * https://projects.drogon.net/raspberry-pi/wiringpi/
+ *
+ * wiringPi is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * wiringPi is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with wiringPi.
+ * If not, see <http://www.gnu.org/licenses/>.
+ ***********************************************************************
+ */
+
+#include <wiringPi.h>
+#include <wiringPiSPI.h>
+
+#include "max5322.h"
+
+/*
+ * myAnalogWrite:
+ * Write analog value on the given pin
+ *********************************************************************************
+ */
+
+static void myAnalogWrite (struct wiringPiNodeStruct *node, int pin, int value)
+{
+ unsigned char spiData [2] ;
+ unsigned char chanBits, dataBits ;
+ int chan = pin - node->pinBase ;
+
+ if (chan == 0)
+ chanBits = 0b01000000 ;
+ else
+ chanBits = 0b01010000 ;
+
+ chanBits |= ((value >> 4) & 0x0F) ;
+ dataBits = ((value << 4) & 0xF0) ;
+
+ spiData [0] = chanBits ;
+ spiData [1] = dataBits ;
+
+ wiringPiSPIDataRW (node->fd, spiData, 2) ;
+}
+
+/*
+ * max5322Setup:
+ * Create a new wiringPi device node for an max5322 on the Pi's
+ * SPI interface.
+ *********************************************************************************
+ */
+
+int max5322Setup (const int pinBase, int spiChannel)
+{
+ struct wiringPiNodeStruct *node ;
+ unsigned char spiData [2] ;
+
+ if (wiringPiSPISetup (spiChannel, 8000000) < 0) // 10MHz Max
+ return -1 ;
+
+ node = wiringPiNewNode (pinBase, 2) ;
+
+ node->fd = spiChannel ;
+ node->analogWrite = myAnalogWrite ;
+
+// Enable both DACs
+
+ spiData [0] = 0b11100000 ;
+ spiData [1] = 0 ;
+
+ wiringPiSPIDataRW (node->fd, spiData, 2) ;
+
+ return 0 ;
+}
--- /dev/null
+/*
+ * max5322.h:
+ * Extend wiringPi with the MAX5322 SPI Digital to Analog convertor
+ * Copyright (c) 2012-2013 Gordon Henderson
+ ***********************************************************************
+ * This file is part of wiringPi:
+ * https://projects.drogon.net/raspberry-pi/wiringpi/
+ *
+ * wiringPi is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * wiringPi is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with wiringPi.
+ * If not, see <http://www.gnu.org/licenses/>.
+ ***********************************************************************
+ */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+extern int max5322Setup (int pinBase, int spiChannel) ;
+
+#ifdef __cplusplus
+}
+#endif