Added in the SN3218 LED controller IC - as used in the PiGlow
so write a little test program with it too. Updated gpio to use the sn3218 too.
This commit is contained in:
Gordon Henderson
parent
8c8578a26b
commit
d24cf0630b
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@ -42,7 +42,7 @@ SRC = blink.c blink8.c blink12.c \
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nes.c \
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softPwm.c softTone.c \
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delayTest.c serialRead.c serialTest.c okLed.c ds1302.c \
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rht03.c
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rht03.c piglow.c
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OBJ = $(SRC:.c=.o)
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@ -139,6 +139,10 @@ ds1302: ds1302.o
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@echo [link]
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@$(CC) -o $@ ds1302.o $(LDFLAGS) $(LDLIBS)
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piglow: piglow.o
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@echo [link]
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@$(CC) -o $@ piglow.o $(LDFLAGS) $(LDLIBS)
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.c.o:
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@echo [CC] $<
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@ -0,0 +1,51 @@
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/*
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* piglow.c:
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* Very simple demonstration of the PiGlow board.
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* This uses the SN3218 directly - soon there will be a new PiGlow
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* devLib device which will handle the PiGlow board on a more easy
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* to use manner...
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*
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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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* 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 published by
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* the Free Software Foundation, either version 3 of the License, or
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* (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 License
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* along with wiringPi. 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 <sn3218.h>
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#define LED_BASE 533
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int main (void)
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{
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int i, j ;
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wiringPiSetupSys () ;
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sn3218Setup (LED_BASE) ;
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for (;;)
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{
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for (i = 0 ; i < 256 ; ++i)
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for (j = 0 ; j < 18 ; ++j)
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analogWrite (LED_BASE + j, i) ;
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for (i = 255 ; i >= 0 ; --i)
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for (j = 0 ; j < 18 ; ++j)
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analogWrite (LED_BASE + j, i) ;
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}
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}
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@ -49,6 +49,7 @@
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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 <sn3218.h>
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#include "extensions.h"
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@ -466,6 +467,20 @@ static int doExtensionMcp4802 (char *progName, int pinBase, char *params)
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}
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/*
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* doExtensionSn3218:
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* Analog Output (LED Driver)
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* sn3218:base
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*********************************************************************************
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*/
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static int doExtensionSn3218 (char *progName, int pinBase, char *params)
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{
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sn3218Setup (pinBase) ;
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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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@ -531,6 +546,7 @@ struct extensionFunctionStruct extensionFunctions [] =
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{ "mcp3422", &doExtensionMcp3422 },
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{ "max31855", &doExtensionMax31855 },
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{ "max5322", &doExtensionMax5322 },
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{ "sn3218", &doExtensionSn3218 },
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{ NULL, NULL },
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} ;
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@ -54,6 +54,7 @@ SRC = wiringPi.c \
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pcf8574.c pcf8591.c \
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mcp3002.c mcp3004.c mcp4802.c mcp3422.c \
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max31855.c max5322.c \
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sn3218.c \
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drc.c
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OBJ = $(SRC:.c=.o)
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@ -112,6 +113,7 @@ install-headers:
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@install -m 0644 sr595.h $(DESTDIR)$(PREFIX)/include
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@install -m 0644 pcf8574.h $(DESTDIR)$(PREFIX)/include
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@install -m 0644 pcf8591.h $(DESTDIR)$(PREFIX)/include
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@install -m 0644 sn3218.h $(DESTDIR)$(PREFIX)/include
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.PHONEY: install
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install: $(DYNAMIC) install-headers
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@ -151,6 +153,7 @@ uninstall:
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@rm -f $(DESTDIR)$(PREFIX)/include/sr595.h
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@rm -f $(DESTDIR)$(PREFIX)/include/pcf8574.h
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@rm -f $(DESTDIR)$(PREFIX)/include/pcf8591.h
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@rm -f $(DESTDIR)$(PREFIX)/include/sn3218.h
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@rm -f $(DESTDIR)$(PREFIX)/lib/libwiringPi.*
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@ldconfig
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@ -184,4 +187,5 @@ mcp4802.o: wiringPi.h wiringPiSPI.h mcp4802.h
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mcp3422.o: wiringPi.h wiringPiI2C.h mcp3422.h
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max31855.o: wiringPi.h wiringPiSPI.h max31855.h
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max5322.o: wiringPi.h wiringPiSPI.h max5322.h
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sn3218.o: wiringPi.h wiringPiI2C.h sn3218.h
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drc.o: wiringPi.h wiringSerial.h drc.h
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@ -0,0 +1,75 @@
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/*
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* sn3218.c:
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* Extend wiringPi with the SN3218 I2C LEd Driver
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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 <wiringPiI2C.h>
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#include "sn3218.h"
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/*
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* myAnalogWrite:
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* Write analog value on the given pin
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*********************************************************************************
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*/
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static void myAnalogWrite (struct wiringPiNodeStruct *node, int pin, int value)
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{
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int fd = node->fd ;
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int chan = 0x01 + (pin - node->pinBase) ;
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wiringPiI2CWriteReg8 (fd, chan, value & 0xFF) ; // Value
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wiringPiI2CWriteReg8 (fd, 0x16, 0x00) ; // Update
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}
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/*
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* sn3218Setup:
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* Create a new wiringPi device node for an sn3218 on the Pi's
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* SPI interface.
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*********************************************************************************
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*/
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int sn3218Setup (const int pinBase)
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{
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int fd ;
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struct wiringPiNodeStruct *node ;
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if ((fd = wiringPiI2CSetup (0x54)) < 0)
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return fd ;
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// Setup the chip - initialise all 18 LEDs to off
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//wiringPiI2CWriteReg8 (fd, 0x17, 0) ; // Reset
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wiringPiI2CWriteReg8 (fd, 0x00, 1) ; // Not Shutdown
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wiringPiI2CWriteReg8 (fd, 0x13, 0x3F) ; // Enable LEDs 0- 5
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wiringPiI2CWriteReg8 (fd, 0x14, 0x3F) ; // Enable LEDs 6-11
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wiringPiI2CWriteReg8 (fd, 0x15, 0x3F) ; // Enable LEDs 12-17
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wiringPiI2CWriteReg8 (fd, 0x16, 0x00) ; // Update
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node = wiringPiNewNode (pinBase, 18) ;
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node->fd = fd ;
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node->analogWrite = myAnalogWrite ;
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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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* sn3218.c:
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* Extend wiringPi with the SN3218 I2C LED driver board.
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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 sn3218Setup (int pinBase) ;
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#ifdef __cplusplus
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}
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#endif
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