mirror of
https://github.com/clockworkpi/WiringPi.git
synced 2025-12-12 07:58:49 +01:00
Latest changes from master repository
This commit is contained in:
Gordon Henderson
Philip Howard
parent
ae40bdaf6a
commit
a651323139
10
People
Normal file
10
People
Normal file
@ -0,0 +1,10 @@
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Just a quick note to some people who've provided help, suggestions,
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bug-fixes, etc. along the way...
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Nick Lott: (And others)
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Hints about making it work with C++
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Philipp Stefan Neininger:
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Minor bug in the Makefile to do with cross compiling
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@ -39,7 +39,12 @@ SRC = test1.c test2.c speed.c lcd.c wfi.c piface.c gertboard.c nes.c delayTest.c
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OBJ = test1.o test2.o speed.o lcd.o wfi.o piface.o gertboard.o nes.o delayTest.o softPwm.o
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all: test1 test2 speed lcd wfi piface gertboard nes softPwm
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BINS = test1 test2 speed lcd wfi piface gertboard nes delayTest softPwm
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all:
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@cat README.TXT
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@echo " $(BINS)" | fmt
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@echo ""
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test1: test1.o
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@echo [link]
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@ -77,7 +82,6 @@ softPwm: softPwm.o
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@echo [link]
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$(CC) -o $@ softPwm.o $(LDFLAGS) $(LIBS) -lm -lpthread
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delayTest: delayTest.o
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@echo [link]
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$(CC) -o $@ delayTest.o $(LDFLAGS) $(LIBS)
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14
examples/README.TXT
Normal file
14
examples/README.TXT
Normal file
@ -0,0 +1,14 @@
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wiringPi Examples
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=================
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There are now too many examples to compile them all in a sensible time,
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and you probably don't want to compile or run them all anyway, so they
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have been separated out.
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To compile an individual example, just type
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make exampleName
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Where exampleName is one of:
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@ -24,7 +24,7 @@
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#DEBUG = -g -O0
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DEBUG = -O3
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DEBUG = -O2
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CC = gcc
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INCLUDE = -I/usr/local/include
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CFLAGS = $(DEBUG) -Wall $(INCLUDE) -Winline -pipe
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@ -32,42 +32,49 @@ CFLAGS = $(DEBUG) -Wall $(INCLUDE) -Winline -pipe
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LDFLAGS = -L/usr/local/lib
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LIBS = -lwiringPi
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# Should not alter anything below this line
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# May not need to alter anything below this line
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###############################################################################
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SRC = gpio.c
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OBJ = gpio.o
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OBJ = $(SRC:.c=.o)
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all: gpio
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gpio: gpio.o /usr/local/lib/libwiringPi.a
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@echo [LD]
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gpio: gpio.o
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@echo [Link]
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@$(CC) -o $@ gpio.o $(LDFLAGS) $(LIBS)
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.c.o:
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@echo [CC] $<
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@echo [Compile] $<
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@$(CC) -c $(CFLAGS) $< -o $@
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.PHONEY: clean
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clean:
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rm -f $(OBJ) gpio *~ core tags
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rm -f $(OBJ) gpio *~ core tags *.bak
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.PHONEY: tags
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tags: $(SRC)
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@echo [ctags]
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@ctags $(SRC)
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depend:
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makedepend -Y $(SRC)
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.PHONEY: install
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install:
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cp gpio /usr/local/bin
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chown root.root /usr/local/bin/gpio
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chmod 4755 /usr/local/bin/gpio
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mkdir -p /usr/local/man/man1
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cp gpio.1 /usr/local/man/man1
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@echo "[Install]"
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@cp gpio /usr/local/bin
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@chown root.root /usr/local/bin/gpio
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@chmod 4755 /usr/local/bin/gpio
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@mkdir -p /usr/local/man/man1
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@cp gpio.1 /usr/local/man/man1
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.PHONEY: uninstall
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uninstall:
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@echo "[UnInstall]"
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rm -f /usr/local/bin/gpio
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rm -f /usr/local/man/man1/gpio.1
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.PHONEY: depend
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depend:
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makedepend -Y $(SRC)
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# DO NOT DELETE
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79
gpio/gpio.1
79
gpio/gpio.1
@ -1,4 +1,4 @@
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.TH "GPIO" "14 June 2012" "Command-Line access to Raspberry Pi and PiFace GPIO"
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.TH "GPIO" "21st October 2012" "Command-Line access to Raspberry Pi and PiFace GPIO"
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.SH NAME
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gpio \- Command-line access to Raspberry Pi and PiFace GPIO
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@ -17,6 +17,9 @@ gpio \- Command-line access to Raspberry Pi and PiFace GPIO
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.B ...
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.PP
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.B gpio
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.B readall
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.PP
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.B gpio
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.B unexportall/exports
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.PP
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.B gpio
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@ -48,9 +51,9 @@ channel value
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.SH DESCRIPTION
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.B GPIO
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is a swiss army knofe of a command line tool to allow the user easy
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is a swiss army knife of a command line tool to allow the user easy
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access to the GPIO pins on the Raspberry Pi and the SPI A/D and D/A
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convertors on the Gertboard. It's designed for simple testing and
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converters on the Gertboard. It's designed for simple testing and
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diagnostic purposes, but can be used in shell scripts for general if
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somewhat slow control of the GPIO pins.
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@ -62,7 +65,7 @@ interface without needing to be run as root.
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.TP
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.B \-v
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Output the current version
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Output the current version including the board revision of the Raspberry Pi.
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.TP
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.B \-g
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@ -73,20 +76,26 @@ Use the BCM_GPIO pins numbers rather than wiringPi pin numbers.
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Use the PiFace interface board and its corresponding pin numbers.
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.TP
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.B read
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.B read <pin>
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Read the digital value of the given pin and print 0 or 1 to represent the
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respective logic levels.
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.TP
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.B write
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.B write <pin> <value>
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Write the given value (0 or 1) to the pin.
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.TP
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.B pwm
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.B readall
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Output a table of all GPIO pins values. The values represent the actual values read
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if the pin is in input mode, or the last value written if the pin is in output
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mode.
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.TP
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.B pwm <pin> <value>
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Write a PWM value (0-1023) to the given pin.
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.TP
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.B mode
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.B mode <pin> <mode>
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Set a pin into \fIinput\fR, \fIoutput\fR or \fIpwm\fR mode. Can also
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use the literals \fIup\fR, \fIdown\fR or \fItri\fR to set the internal
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pull-up, pull-down or tristate (off) controls.
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@ -122,7 +131,7 @@ the direction to input and set the edge interrupt method to \fInone\fR,
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above and note that \fBBCM_GPIO\fR pin number is used not not wiringPi pin
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numbering.
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Like the export commands abovem ownership is set to that of the
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Like the export commands above, ownership is set to that of the
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calling user, allowing subsequent access from user programs without
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requiring root/sudo.
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@ -155,7 +164,7 @@ the associated /dev/ entries so that the current user has access to them.
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.B gbr
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channel
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This reads the analog to digital convertor on the Gertboard on the given
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This reads the analog to digital converter on the Gertboard on the given
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channel. The board jumpers need to be in-place to do this operation.
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.TP
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@ -163,7 +172,7 @@ channel. The board jumpers need to be in-place to do this operation.
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channel value
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This writes the supplied value to the output channel on the Gertboards
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SPI digital to analogue convertor.
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SPI digital to analogue converter.
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The board jumpers need to be in-place to do this operation.
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@ -171,26 +180,30 @@ The board jumpers need to be in-place to do this operation.
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.PP
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.TS
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r r l.
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WiringPi GPIO Function
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r r r l.
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WiringPi GPIO-r1 GPIO-r2 Function
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_
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0 17
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1 18 (PWM)
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2 21
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3 22
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4 23
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5 24
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6 25
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7 4
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8 0 SDA0
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9 1 SCL0
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10 8 SPI CE0
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11 7 SPI CE1
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12 10 SPI MOSI
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13 9 SPI MISO
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14 11 SPI SCLK
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15 14 TxD
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16 15 RxD
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0 17 17
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1 18 18 (PWM)
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2 21 27
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3 22 22
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4 23 23
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5 24 24
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6 25 25
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7 4 4
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8 0 2 I2C: SDA0
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9 1 3 I2C: SCL0
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10 8 8 SPI: CE0
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11 7 7 SPI: CE1
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12 10 10 SPI: MOSI
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13 9 9 SPI: MISO
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14 11 11 SPI: SCLK
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15 14 14 TxD
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16 15 16 RxD
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17 - 28
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18 - 29
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19 - 30
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20 - 31
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.TE
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.SH FILES
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@ -234,10 +247,14 @@ Gordon Henderson
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.SH "REPORTING BUGS"
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Report bugs to <projects@drogon.net>
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Please report bugs to <projects@drogon.net>
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.SH COPYRIGHT
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Copyright (c) 2012 Gordon Henderson
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This is free software; see the source for copying conditions. There is NO
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warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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.SH TRADEMARKS AND ACKNOWLEDGEMENTS
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Raspberry Pi is a trademark of the Raspberry Pi Foundation.
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119
gpio/gpio.c
119
gpio/gpio.c
@ -40,7 +40,7 @@
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# define FALSE (1==2)
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#endif
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#define VERSION "1.2"
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#define VERSION "1.4"
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static int wpMode ;
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@ -48,13 +48,16 @@ char *usage = "Usage: gpio -v\n"
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" gpio -h\n"
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" gpio [-g] <read/write/pwm/mode> ...\n"
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" gpio [-p] <read/write/mode> ...\n"
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" gpio export/edge/unexport/unexportall/exports ...\n"
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" gpio readall\n"
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" gpio unexportall/exports ...\n"
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" gpio export/edge/unexport ...\n"
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" gpio drive <group> <value>\n"
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" gpio pwm-bal/pwm-ms \n"
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" gpio pwmr <range> \n"
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" gpio pwmc <divider> \n"
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" gpio load spi/i2c\n"
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" gpio gbr <channel>\n"
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" gpio gbw <channel> <value>\n" ;
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" gpio gbw <channel> <value>" ; // No trailing newline needed here.
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/*
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@ -171,6 +174,65 @@ static void doLoad (int argc, char *argv [])
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}
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/*
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* doReadall:
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* Read all the GPIO pins
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*********************************************************************************
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*/
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static char *pinNames [] =
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{
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"GPIO 0",
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"GPIO 1",
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"GPIO 2",
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"GPIO 3",
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"GPIO 4",
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"GPIO 5",
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"GPIO 6",
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"GPIO 7",
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"SDA ",
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"SCL ",
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"CE0 ",
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"CE1 ",
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"MOSI ",
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"MISO ",
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"SCLK ",
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"TxD ",
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"RxD ",
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"GPIO 8",
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"GPIO 9",
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"GPIO10",
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"GPIO11",
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} ;
|
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|
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static void doReadall (void)
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{
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int pin ;
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|
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printf ("+----------+------+--------+-------+\n") ;
|
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printf ("| wiringPi | GPIO | Name | Value |\n") ;
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printf ("+----------+------+--------+-------+\n") ;
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|
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for (pin = 0 ; pin < NUM_PINS ; ++pin)
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printf ("| %6d | %3d | %s | %s |\n",
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pin, wpiPinToGpio (pin),
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pinNames [pin],
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digitalRead (pin) == HIGH ? "High" : "Low ") ;
|
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|
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printf ("+----------+------+--------+-------+\n") ;
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|
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if (piBoardRev () == 1)
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return ;
|
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|
||||
for (pin = 17 ; pin <= 20 ; ++pin)
|
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printf ("| %6d | %3d | %s | %s |\n",
|
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pin, wpiPinToGpio (pin),
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pinNames [pin],
|
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digitalRead (pin) == HIGH ? "High" : "Low ") ;
|
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|
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printf ("+----------+------+--------+-------+\n") ;
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}
|
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|
||||
|
||||
/*
|
||||
* doExports:
|
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@ -687,8 +749,8 @@ void doPwm (int argc, char *argv [])
|
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|
||||
|
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/*
|
||||
* doPwmMode: doPwmRange:
|
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* Change the PWM mode and Range values
|
||||
* doPwmMode: doPwmRange: doPwmClock:
|
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* Change the PWM mode, range and clock divider values
|
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*********************************************************************************
|
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*/
|
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|
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@ -718,6 +780,27 @@ static void doPwmRange (int argc, char *argv [])
|
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pwmSetRange (range) ;
|
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}
|
||||
|
||||
static void doPwmClock (int argc, char *argv [])
|
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{
|
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unsigned int clock ;
|
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|
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if (argc != 3)
|
||||
{
|
||||
fprintf (stderr, "Usage: %s pwmc <clock>\n", argv [0]) ;
|
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exit (1) ;
|
||||
}
|
||||
|
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clock = (unsigned int)strtoul (argv [2], NULL, 10) ;
|
||||
|
||||
if ((clock < 1) || (clock > 4095))
|
||||
{
|
||||
fprintf (stderr, "%s: clock must be between 0 and 4096\n", argv [0]) ;
|
||||
exit (1) ;
|
||||
}
|
||||
|
||||
pwmSetClock (clock) ;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* main:
|
||||
@ -731,7 +814,7 @@ int main (int argc, char *argv [])
|
||||
|
||||
if (argc == 1)
|
||||
{
|
||||
fprintf (stderr, "%s: %s\n", argv [0], usage) ;
|
||||
fprintf (stderr, "%s\n", usage) ;
|
||||
return 1 ;
|
||||
}
|
||||
|
||||
@ -747,6 +830,8 @@ int main (int argc, char *argv [])
|
||||
printf ("Copyright (c) 2012 Gordon Henderson\n") ;
|
||||
printf ("This is free software with ABSOLUTELY NO WARRANTY.\n") ;
|
||||
printf ("For details type: %s -warranty\n", argv [0]) ;
|
||||
printf ("\n") ;
|
||||
printf ("This Raspberry Pi is a revision %d board.\n", piBoardRev ()) ;
|
||||
return 0 ;
|
||||
}
|
||||
|
||||
@ -785,9 +870,8 @@ int main (int argc, char *argv [])
|
||||
else if (strcasecmp (argv [1], "unexportall") == 0) { doUnexportall (argc, argv) ; return 0 ; }
|
||||
else if (strcasecmp (argv [1], "unexport" ) == 0) { doUnexport (argc, argv) ; return 0 ; }
|
||||
|
||||
// Check for drive or load commands:
|
||||
// Check for load command:
|
||||
|
||||
if (strcasecmp (argv [1], "drive") == 0) { doPadDrive (argc, argv) ; return 0 ; }
|
||||
if (strcasecmp (argv [1], "load" ) == 0) { doLoad (argc, argv) ; return 0 ; }
|
||||
|
||||
// Gertboard commands
|
||||
@ -839,21 +923,24 @@ int main (int argc, char *argv [])
|
||||
wpMode = WPI_MODE_PINS ;
|
||||
}
|
||||
|
||||
// Check for PWM operations
|
||||
// Check for PWM or Pad Drive operations
|
||||
|
||||
if (wpMode != WPI_MODE_PIFACE)
|
||||
{
|
||||
if (strcasecmp (argv [1], "pwm-bal") == 0) { doPwmMode (PWM_MODE_BAL) ; return 0 ; }
|
||||
if (strcasecmp (argv [1], "pwm-ms") == 0) { doPwmMode (PWM_MODE_MS) ; return 0 ; }
|
||||
if (strcasecmp (argv [1], "pwmr") == 0) { doPwmRange (argc, argv) ; return 0 ; }
|
||||
if (strcasecmp (argv [1], "pwm-bal") == 0) { doPwmMode (PWM_MODE_BAL) ; return 0 ; }
|
||||
if (strcasecmp (argv [1], "pwm-ms") == 0) { doPwmMode (PWM_MODE_MS) ; return 0 ; }
|
||||
if (strcasecmp (argv [1], "pwmr") == 0) { doPwmRange (argc, argv) ; return 0 ; }
|
||||
if (strcasecmp (argv [1], "pwmc") == 0) { doPwmClock (argc, argv) ; return 0 ; }
|
||||
if (strcasecmp (argv [1], "drive") == 0) { doPadDrive (argc, argv) ; return 0 ; }
|
||||
}
|
||||
|
||||
// Check for wiring commands
|
||||
|
||||
/**/ if (strcasecmp (argv [1], "read" ) == 0) doRead (argc, argv) ;
|
||||
else if (strcasecmp (argv [1], "write") == 0) doWrite (argc, argv) ;
|
||||
else if (strcasecmp (argv [1], "pwm" ) == 0) doPwm (argc, argv) ;
|
||||
else if (strcasecmp (argv [1], "mode" ) == 0) doMode (argc, argv) ;
|
||||
/**/ if (strcasecmp (argv [1], "readall" ) == 0) doReadall () ;
|
||||
else if (strcasecmp (argv [1], "read" ) == 0) doRead (argc, argv) ;
|
||||
else if (strcasecmp (argv [1], "write") == 0) doWrite (argc, argv) ;
|
||||
else if (strcasecmp (argv [1], "pwm" ) == 0) doPwm (argc, argv) ;
|
||||
else if (strcasecmp (argv [1], "mode" ) == 0) doMode (argc, argv) ;
|
||||
else
|
||||
{
|
||||
fprintf (stderr, "%s: Unknown command: %s.\n", argv [0], argv [1]) ;
|
||||
|
||||
21
gpio/test.sh
21
gpio/test.sh
@ -1,4 +1,25 @@
|
||||
#!/bin/bash
|
||||
#
|
||||
# test.sh:
|
||||
# Simple test: Assumes LEDs on Pins 0-7 and lights them
|
||||
# in-turn.
|
||||
#################################################################################
|
||||
# This file is part of wiringPi:
|
||||
# Wiring Compatable library for the Raspberry Pi
|
||||
#
|
||||
# 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/>.
|
||||
#################################################################################
|
||||
|
||||
# Simple test - assumes LEDs on Pins 0-7.
|
||||
|
||||
|
||||
@ -21,71 +21,104 @@
|
||||
# along with wiringPi. If not, see <http://www.gnu.org/licenses/>.
|
||||
#################################################################################
|
||||
|
||||
DYN_VERS_MAJ=1
|
||||
DYN_VERS_MIN=0
|
||||
|
||||
TARGET=libwiringPi.a
|
||||
STATIC=libwiringPi.a
|
||||
DYNAMIC=libwiringPi.so.$(DYN_VERS_MAJ).$(DYN_VERS_MIN)
|
||||
|
||||
#DEBUG = -g -O0
|
||||
DEBUG = -O3
|
||||
DEBUG = -O2
|
||||
CC = gcc
|
||||
INCLUDE = -I.
|
||||
CFLAGS = $(DEBUG) -Wall $(INCLUDE) -Winline -pipe
|
||||
CFLAGS = $(DEBUG) -Wall $(INCLUDE) -Winline -pipe -fPIC
|
||||
|
||||
LIBS =
|
||||
|
||||
# Should not alter anything below this line
|
||||
###############################################################################
|
||||
|
||||
SRC = wiringPi.c wiringPiFace.c wiringSerial.c wiringShift.c lcd.c piHiPri.c piThread.c
|
||||
SRC = wiringPi.c wiringPiFace.c wiringSerial.c wiringShift.c \
|
||||
gertboard.c \
|
||||
piNes.c \
|
||||
lcd.c piHiPri.c piThread.c softPwm.c wiringPiSPI.c
|
||||
|
||||
OBJ = wiringPi.o wiringPiFace.o wiringSerial.o wiringShift.o lcd.o piHiPri.o piThread.o
|
||||
OBJ = $(SRC:.c=.o)
|
||||
|
||||
all: $(TARGET)
|
||||
#all: $(STATIC) $(DYNAMIC)
|
||||
all: $(DYNAMIC)
|
||||
|
||||
$(TARGET): $(OBJ)
|
||||
@echo [AR] $(OBJ)
|
||||
@ar rcs $(TARGET) $(OBJ)
|
||||
@ranlib $(TARGET)
|
||||
@size $(TARGET)
|
||||
$(STATIC): $(OBJ)
|
||||
@echo [Link (Static)]
|
||||
@ar rcs $(STATIC) $(OBJ)
|
||||
@ranlib $(STATIC)
|
||||
@size $(STATIC)
|
||||
|
||||
$(DYNAMIC): $(OBJ)
|
||||
@echo [Link]
|
||||
@$(CC) -shared -Wl,-soname,libwiringPi.so.1 -o libwiringPi.so.1.0 -lpthread $(OBJ)
|
||||
|
||||
.c.o:
|
||||
@echo [CC] $<
|
||||
@echo [Compile] $<
|
||||
@$(CC) -c $(CFLAGS) $< -o $@
|
||||
|
||||
.PHONEY: clean
|
||||
clean:
|
||||
rm -f $(OBJ) $(TARGET) *~ core tags Makefile.bak
|
||||
rm -f $(OBJ) *~ core tags Makefile.bak libwiringPi.*
|
||||
|
||||
.PHONEY: tags
|
||||
tags: $(SRC)
|
||||
@echo [ctags]
|
||||
@ctags $(SRC)
|
||||
|
||||
.PHONEY: install
|
||||
install: $(TARGET)
|
||||
@echo "[Install]"
|
||||
@install -m 0755 -d /usr/local/lib
|
||||
@install -m 0755 -d /usr/local/include
|
||||
@install -m 0644 wiringPi.h /usr/local/include
|
||||
@install -m 0644 wiringSerial.h /usr/local/include
|
||||
@install -m 0644 wiringShift.h /usr/local/include
|
||||
@install -m 0644 gertboard.h /usr/local/include
|
||||
@install -m 0644 piNes.h /usr/local/include
|
||||
@install -m 0644 softPwm.h /usr/local/include
|
||||
@install -m 0644 lcd.h /usr/local/include
|
||||
@install -m 0644 wiringPiSPI.h /usr/local/include
|
||||
# @install -m 0644 libwiringPi.a /usr/local/lib
|
||||
@install -m 0755 libwiringPi.so.1.0 /usr/local/lib
|
||||
@ln -sf /usr/local/lib/libwiringPi.so.1.0 /usr/local/lib/libwiringPi.so
|
||||
@ln -sf /usr/local/lib/libwiringPi.so.1.0 /usr/local/lib/libwiringPi.so.1
|
||||
@ldconfig
|
||||
|
||||
.PHONEY: uninstall
|
||||
uninstall:
|
||||
@echo "[UnInstall]"
|
||||
@rm -f /usr/local/include/wiringPi.h
|
||||
@rm -f /usr/local/include/wiringSerial.h
|
||||
@rm -f /usr/local/include/wiringShift.h
|
||||
@rm -f /usr/local/include/gertboard.h
|
||||
@rm -f /usr/local/include/piNes.h
|
||||
@rm -f /usr/local/include/softPwm.h
|
||||
@rm -f /usr/local/include/lcd.h
|
||||
@rm -f /usr/local/include/wiringPiSPI.h
|
||||
@rm -f /usr/local/lib/libwiringPi.*
|
||||
@ldconfig
|
||||
|
||||
|
||||
.PHONEY: depend
|
||||
depend:
|
||||
makedepend -Y $(SRC)
|
||||
|
||||
install: $(TARGET)
|
||||
@echo [install]
|
||||
install -m 0755 -d /usr/local/lib
|
||||
install -m 0755 -d /usr/local/include
|
||||
install -m 0644 wiringPi.h /usr/local/include
|
||||
install -m 0644 wiringSerial.h /usr/local/include
|
||||
install -m 0644 wiringShift.h /usr/local/include
|
||||
install -m 0644 lcd.h /usr/local/include
|
||||
install -m 0644 libwiringPi.a /usr/local/lib
|
||||
|
||||
uninstall:
|
||||
@echo [uninstall]
|
||||
rm -f /usr/local/include/lcd.h
|
||||
rm -f /usr/local/include/wiringShift.h
|
||||
rm -f /usr/local/include/wiringPi.h
|
||||
rm -f /usr/local/lib/libwiringPi.a
|
||||
|
||||
|
||||
|
||||
# DO NOT DELETE
|
||||
|
||||
wiringPi.o: wiringPi.h
|
||||
wiringPiFace.o: wiringPi.h
|
||||
wiringSerial.o: wiringSerial.h
|
||||
wiringShift.o: wiringPi.h wiringShift.h
|
||||
gertboard.o: wiringPiSPI.h gertboard.h
|
||||
piNes.o: wiringPi.h piNes.h
|
||||
lcd.o: wiringPi.h lcd.h
|
||||
piHiPri.o: wiringPi.h
|
||||
piThread.o: wiringPi.h
|
||||
softPwm.o: wiringPi.h softPwm.h
|
||||
wiringPiSPI.o: wiringPiSPI.h
|
||||
|
||||
@ -1,6 +1,8 @@
|
||||
|
||||
WiringPi: An implementation of most of the Arduino Wiring
|
||||
functions for the Raspberry Pi
|
||||
functions for the Raspberry Pi,
|
||||
along with many more features and libraries to support
|
||||
hardware, etc. on the Raspberry Pi
|
||||
|
||||
Full details at:
|
||||
https://projects.drogon.net/raspberry-pi/wiringpi/
|
||||
|
||||
@ -75,7 +75,10 @@ struct lcdDataStruct *lcds [MAX_LCDS] ;
|
||||
|
||||
static void strobe (struct lcdDataStruct *lcd)
|
||||
{
|
||||
digitalWrite (lcd->strbPin, 1) ; delayMicroseconds (1) ;
|
||||
|
||||
// Note timing changes for new version of delayMicroseconds ()
|
||||
|
||||
digitalWrite (lcd->strbPin, 1) ; delayMicroseconds (50) ;
|
||||
digitalWrite (lcd->strbPin, 0) ; delayMicroseconds (50) ;
|
||||
}
|
||||
|
||||
|
||||
@ -26,6 +26,10 @@
|
||||
|
||||
#define MAX_LCDS 8
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
extern void lcdHome (int fd) ;
|
||||
extern void lcdClear (int fd) ;
|
||||
extern void lcdPosition (int fd, int x, int y) ;
|
||||
@ -33,10 +37,6 @@ extern void lcdPutchar (int fd, uint8_t data) ;
|
||||
extern void lcdPuts (int fd, char *string) ;
|
||||
extern void lcdPrintf (int fd, char *message, ...) ;
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
extern int lcdInit (int rows, int cols, int bits, int rs, int strb,
|
||||
int d0, int d1, int d2, int d3, int d4, int d5, int d6, int d7) ;
|
||||
|
||||
|
||||
@ -2,6 +2,7 @@
|
||||
* wiringPi:
|
||||
* Arduino compatable (ish) Wiring library for the Raspberry Pi
|
||||
* Copyright (c) 2012 Gordon Henderson
|
||||
* Additional code for pwmSetClock by Chris Hall <chris@kchall.plus.com>
|
||||
*
|
||||
* Thanks to code samples from Gert Jan van Loo and the
|
||||
* BCM2835 ARM Peripherals manual, however it's missing
|
||||
@ -56,6 +57,8 @@
|
||||
|
||||
#include <stdio.h>
|
||||
#include <stdint.h>
|
||||
#include <stdlib.h>
|
||||
#include <ctype.h>
|
||||
#include <poll.h>
|
||||
#include <unistd.h>
|
||||
#include <errno.h>
|
||||
@ -81,6 +84,7 @@ int (*waitForInterrupt) (int pin, int mS) ;
|
||||
void (*delayMicroseconds) (unsigned int howLong) ;
|
||||
void (*pwmSetMode) (int mode) ;
|
||||
void (*pwmSetRange) (unsigned int range) ;
|
||||
void (*pwmSetClock) (int divisor) ;
|
||||
|
||||
|
||||
#ifndef TRUE
|
||||
@ -166,9 +170,12 @@ static volatile uint32_t *pwm ;
|
||||
static volatile uint32_t *clk ;
|
||||
static volatile uint32_t *pads ;
|
||||
static volatile uint32_t *timer ;
|
||||
|
||||
static volatile uint32_t *timerIrqRaw ;
|
||||
|
||||
// Debugging
|
||||
|
||||
static int wiringPiDebug = FALSE ;
|
||||
|
||||
// The BCM2835 has 54 GPIO pins.
|
||||
// BCM2835 data sheet, Page 90 onwards.
|
||||
// There are 6 control registers, each control the functions of a block
|
||||
@ -198,8 +205,11 @@ static int sysFds [64] ;
|
||||
|
||||
// pinToGpio:
|
||||
// Take a Wiring pin (0 through X) and re-map it to the BCM_GPIO pin
|
||||
// Cope for 2 different board revieions here
|
||||
|
||||
static int pinToGpio [64] =
|
||||
static int *pinToGpio ;
|
||||
|
||||
static int pinToGpioR1 [64] =
|
||||
{
|
||||
17, 18, 21, 22, 23, 24, 25, 4, // From the Original Wiki - GPIO 0 through 7
|
||||
0, 1, // I2C - SDA0, SCL0
|
||||
@ -209,11 +219,28 @@ static int pinToGpio [64] =
|
||||
|
||||
// Padding:
|
||||
|
||||
-1, -1, -1,-1,-1,-1,-1, -1, -1, -1, -1, -1, -1, -1, -1, // ... 31
|
||||
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // ... 31
|
||||
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // ... 47
|
||||
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // ... 63
|
||||
} ;
|
||||
|
||||
static int pinToGpioR2 [64] =
|
||||
{
|
||||
17, 18, 27, 22, 23, 24, 25, 4, // From the Original Wiki - GPIO 0 through 7: wpi 0 - 7
|
||||
2, 3, // I2C - SDA0, SCL0 wpi 8 - 9
|
||||
8, 7, // SPI - CE1, CE0 wpi 10 - 11
|
||||
10, 9, 11, // SPI - MOSI, MISO, SCLK wpi 12 - 14
|
||||
14, 15, // UART - Tx, Rx wpi 15 - 16
|
||||
28, 29, 30, 31, // New GPIOs 8 though 11 wpi 17 - 20
|
||||
|
||||
// Padding:
|
||||
|
||||
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // ... 31
|
||||
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // ... 47
|
||||
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // ... 63
|
||||
} ;
|
||||
|
||||
|
||||
// gpioToGPFSEL:
|
||||
// Map a BCM_GPIO pin to it's control port. (GPFSEL 0-5)
|
||||
|
||||
@ -227,6 +254,7 @@ static uint8_t gpioToGPFSEL [] =
|
||||
5,5,5,5,5,5,5,5,5,5,
|
||||
} ;
|
||||
|
||||
|
||||
// gpioToShift
|
||||
// Define the shift up for the 3 bits per pin in each GPFSEL port
|
||||
|
||||
@ -239,6 +267,7 @@ static uint8_t gpioToShift [] =
|
||||
0,3,6,9,12,15,18,21,24,27,
|
||||
} ;
|
||||
|
||||
|
||||
// gpioToGPSET:
|
||||
// (Word) offset to the GPIO Set registers for each GPIO pin
|
||||
|
||||
@ -248,6 +277,7 @@ static uint8_t gpioToGPSET [] =
|
||||
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
|
||||
} ;
|
||||
|
||||
|
||||
// gpioToGPCLR:
|
||||
// (Word) offset to the GPIO Clear registers for each GPIO pin
|
||||
|
||||
@ -257,6 +287,7 @@ static uint8_t gpioToGPCLR [] =
|
||||
11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,
|
||||
} ;
|
||||
|
||||
|
||||
// gpioToGPLEV:
|
||||
// (Word) offset to the GPIO Input level registers for each GPIO pin
|
||||
|
||||
@ -266,6 +297,7 @@ static uint8_t gpioToGPLEV [] =
|
||||
14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,
|
||||
} ;
|
||||
|
||||
|
||||
#ifdef notYetReady
|
||||
// gpioToEDS
|
||||
// (Word) offset to the Event Detect Status
|
||||
@ -295,6 +327,7 @@ static uint8_t gpioToFEN [] =
|
||||
} ;
|
||||
#endif
|
||||
|
||||
|
||||
// gpioToPUDCLK
|
||||
// (Word) offset to the Pull Up Down Clock regsiter
|
||||
|
||||
@ -306,6 +339,7 @@ static uint8_t gpioToPUDCLK [] =
|
||||
39,39,39,39,39,39,39,39,39,39,39,39,39,39,39,39,39,39,39,39,39,39,39,39,39,39,39,39,39,39,39,39,
|
||||
} ;
|
||||
|
||||
|
||||
// gpioToPwmALT
|
||||
// the ALT value to put a GPIO pin into PWM mode
|
||||
|
||||
@ -339,7 +373,122 @@ static uint8_t gpioToPwmPort [] =
|
||||
|
||||
static unsigned long long epoch ;
|
||||
|
||||
//////////////////////////////////////////////////////////////////////////////////
|
||||
/*
|
||||
* Functions
|
||||
*********************************************************************************
|
||||
*/
|
||||
|
||||
|
||||
/*
|
||||
* wpiPinToGpio:
|
||||
* Translate a wiringPi Pin number to native GPIO pin number.
|
||||
* (We don't use this here, prefering to just do the lookup directly,
|
||||
* but it's been requested!)
|
||||
*********************************************************************************
|
||||
*/
|
||||
|
||||
int wpiPinToGpio (int wpiPin)
|
||||
{
|
||||
return pinToGpio [wpiPin & 63] ;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* piBoardRev:
|
||||
* Return a number representing the hardware revision of the board.
|
||||
* Revision is currently 1 or 2. -1 is returned on error.
|
||||
*
|
||||
* Much confusion here )-:
|
||||
* Seems there ar esome boards with 0000 in them (mistake in manufacture)
|
||||
* and some board with 0005 in them (another mistake in manufacture).
|
||||
* So the distinction between boards that I can see is:
|
||||
* 0000 - Error
|
||||
* 0001 - Not used
|
||||
* 0002 - Rev 1
|
||||
* 0003 - Rev 1
|
||||
* 0004 - Rev 2
|
||||
* 0005 - Rev 2
|
||||
* 0006 - Rev 2
|
||||
* 000f - Rev 2 + 512MB
|
||||
*
|
||||
* A small thorn is the olde style overvolting - that will add in
|
||||
* 1000000
|
||||
*
|
||||
*********************************************************************************
|
||||
*/
|
||||
|
||||
int piBoardRev (void)
|
||||
{
|
||||
FILE *cpuFd ;
|
||||
char line [120] ;
|
||||
char *c, lastChar ;
|
||||
static int boardRev = -1 ;
|
||||
|
||||
// No point checking twice...
|
||||
|
||||
if (boardRev != -1)
|
||||
return boardRev ;
|
||||
|
||||
if ((cpuFd = fopen ("/proc/cpuinfo", "r")) == NULL)
|
||||
return -1 ;
|
||||
|
||||
while (fgets (line, 120, cpuFd) != NULL)
|
||||
if (strncmp (line, "Revision", 8) == 0)
|
||||
break ;
|
||||
|
||||
fclose (cpuFd) ;
|
||||
|
||||
if (line == NULL)
|
||||
{
|
||||
fprintf (stderr, "piBoardRev: Unable to determine board revision from /proc/cpuinfo\n") ;
|
||||
fprintf (stderr, " (No \"Revision\" line)\n") ;
|
||||
errno = 0 ;
|
||||
return -1 ;
|
||||
}
|
||||
|
||||
for (c = line ; *c ; ++c)
|
||||
if (isdigit (*c))
|
||||
break ;
|
||||
|
||||
if (!isdigit (*c))
|
||||
{
|
||||
fprintf (stderr, "piBoardRev: Unable to determine board revision from /proc/cpuinfo\n") ;
|
||||
fprintf (stderr, " (No numeric revision string in: \"%s\"\n", line) ;
|
||||
errno = 0 ;
|
||||
return -1 ;
|
||||
}
|
||||
|
||||
// If you have overvolted the Pi, then it appears that the revision
|
||||
// has 100000 added to it!
|
||||
|
||||
if (wiringPiDebug)
|
||||
if (strlen (c) != 4)
|
||||
printf ("piboardRev: This Pi has/is overvolted!\n") ;
|
||||
|
||||
lastChar = c [strlen (c) - 2] ;
|
||||
|
||||
/**/ if ((lastChar == '2') || (lastChar == '3'))
|
||||
boardRev = 1 ;
|
||||
else
|
||||
boardRev = 2 ;
|
||||
|
||||
#ifdef DO_WE_CARE_ABOUT_THIS_NOW
|
||||
else
|
||||
{
|
||||
fprintf (stderr, "WARNING: wiringPi: Unable to determine board revision from \"%d\"\n", r) ;
|
||||
fprintf (stderr, " -> You may want to check:\n") ;
|
||||
fprintf (stderr, " -> http://www.raspberrypi.org/phpBB3/viewtopic.php?p=184410#p184410\n") ;
|
||||
fprintf (stderr, " -> Assuming a Rev 1 board\n") ;
|
||||
boardRev = 1 ;
|
||||
}
|
||||
#endif
|
||||
|
||||
if (wiringPiDebug)
|
||||
printf ("piboardRev: Revision string: %s, board revision: %d\n", c, boardRev) ;
|
||||
|
||||
return boardRev ;
|
||||
}
|
||||
|
||||
|
||||
|
||||
/*
|
||||
@ -350,7 +499,6 @@ static unsigned long long epoch ;
|
||||
|
||||
void pinModeGpio (int pin, int mode)
|
||||
{
|
||||
static int pwmRunning = FALSE ;
|
||||
int fSel, shift, alt ;
|
||||
|
||||
pin &= 63 ;
|
||||
@ -371,38 +519,28 @@ void pinModeGpio (int pin, int mode)
|
||||
|
||||
*(gpio + fSel) = (*(gpio + fSel) & ~(7 << shift)) | (alt << shift) ;
|
||||
|
||||
// We didn't initialise the PWM hardware at setup time - because it's possible that
|
||||
// something else is using the PWM - e.g. the Audio systems! So if we use PWM
|
||||
// here, then we're assuming that nothing else is, otherwise things are going
|
||||
// to sound a bit funny...
|
||||
// Page 107 of the BCM Peripherals manual talks about the GPIO clocks,
|
||||
// but I'm assuming (hoping!) that this applies to other clocks too.
|
||||
|
||||
if (!pwmRunning)
|
||||
{
|
||||
*(pwm + PWM_CONTROL) = 0 ; // Stop PWM
|
||||
*(clk + PWMCLK_CNTL) = BCM_PASSWORD | 0x01 ; // Stop PWM Clock
|
||||
delayMicroseconds (110) ; // See comments in pwmSetClockWPi
|
||||
|
||||
*(pwm + PWM_CONTROL) = 0 ; // Stop PWM
|
||||
delayMicroseconds (10) ;
|
||||
|
||||
// Gert/Doms Values
|
||||
*(clk + PWMCLK_DIV) = BCM_PASSWORD | (32<<12) ; // set pwm div to 32 (19.2/32 = 600KHz)
|
||||
*(clk + PWMCLK_CNTL) = BCM_PASSWORD | 0x11 ; // Source=osc and enable
|
||||
(void)*(pwm + PWM_CONTROL) ;
|
||||
while ((*(pwm + PWM_CONTROL) & 0x80) != 0) // Wait for clock to be !BUSY
|
||||
delayMicroseconds (1) ;
|
||||
|
||||
delayMicroseconds (10) ;
|
||||
*(clk + PWMCLK_DIV) = BCM_PASSWORD | (32 << 12) ; // set pwm div to 32 (19.2/32 = 600KHz)
|
||||
*(clk + PWMCLK_CNTL) = BCM_PASSWORD | 0x11 ; // enable clk
|
||||
|
||||
*(pwm + PWM0_RANGE) = 0x400 ; delayMicroseconds (10) ;
|
||||
*(pwm + PWM1_RANGE) = 0x400 ; delayMicroseconds (10) ;
|
||||
// Default range regsiter of 1024
|
||||
|
||||
// Enable PWMs
|
||||
*(pwm + PWM0_DATA) = 0 ; *(pwm + PWM0_RANGE) = 1024 ;
|
||||
*(pwm + PWM1_DATA) = 0 ; *(pwm + PWM1_RANGE) = 1024 ;
|
||||
|
||||
*(pwm + PWM0_DATA) = 512 ;
|
||||
*(pwm + PWM1_DATA) = 512 ;
|
||||
|
||||
// Balanced mode (default)
|
||||
|
||||
*(pwm + PWM_CONTROL) = PWM0_ENABLE | PWM1_ENABLE ;
|
||||
|
||||
pwmRunning = TRUE ;
|
||||
}
|
||||
// Enable PWMs in balanced mode (default)
|
||||
|
||||
*(pwm + PWM_CONTROL) = PWM0_ENABLE | PWM1_ENABLE ;
|
||||
}
|
||||
|
||||
// When we change mode of any pin, we remove the pull up/downs
|
||||
@ -459,6 +597,55 @@ void pwmSetRangeSys (unsigned int range)
|
||||
return ;
|
||||
}
|
||||
|
||||
/*
|
||||
* pwmSetClockWPi:
|
||||
* Set/Change the PWM clock. Originally my code, but changed
|
||||
* (for the better!) by Chris Hall, <chris@kchall.plus.com>
|
||||
* after further study of the manual and testing with a 'scope
|
||||
*********************************************************************************
|
||||
*/
|
||||
|
||||
void pwmSetClockWPi (int divisor)
|
||||
{
|
||||
unsigned int pwm_control ;
|
||||
divisor &= 4095 ;
|
||||
|
||||
if (wiringPiDebug)
|
||||
printf ("Setting to: %d. Current: 0x%08X\n", divisor, *(clk + PWMCLK_DIV)) ;
|
||||
|
||||
pwm_control = *(pwm + PWM_CONTROL) ; // preserve PWM_CONTROL
|
||||
|
||||
// We need to stop PWM prior to stopping PWM clock in MS mode otherwise BUSY
|
||||
// stays high.
|
||||
|
||||
*(pwm + PWM_CONTROL) = 0 ; // Stop PWM
|
||||
|
||||
// Stop PWM clock before changing divisor. The delay after this does need to
|
||||
// this big (95uS occasionally fails, 100uS OK), it's almost as though the BUSY
|
||||
// flag is not working properly in balanced mode. Without the delay when DIV is
|
||||
// adjusted the clock sometimes switches to very slow, once slow further DIV
|
||||
// adjustments do nothing and it's difficult to get out of this mode.
|
||||
|
||||
*(clk + PWMCLK_CNTL) = BCM_PASSWORD | 0x01 ; // Stop PWM Clock
|
||||
delayMicroseconds (110) ; // prevents clock going sloooow
|
||||
|
||||
while ((*(pwm + PWM_CONTROL) & 0x80) != 0) // Wait for clock to be !BUSY
|
||||
delayMicroseconds (1) ;
|
||||
|
||||
*(clk + PWMCLK_DIV) = BCM_PASSWORD | (divisor << 12) ;
|
||||
|
||||
*(clk + PWMCLK_CNTL) = BCM_PASSWORD | 0x11 ; // Start PWM clock
|
||||
*(pwm + PWM_CONTROL) = pwm_control ; // restore PWM_CONTROL
|
||||
|
||||
if (wiringPiDebug)
|
||||
printf ("Set to: %d. Now : 0x%08X\n", divisor, *(clk + PWMCLK_DIV)) ;
|
||||
}
|
||||
|
||||
void pwmSetClockSys (int divisor)
|
||||
{
|
||||
return ;
|
||||
}
|
||||
|
||||
|
||||
#ifdef notYetReady
|
||||
/*
|
||||
@ -518,7 +705,7 @@ void digitalWriteSys (int pin, int value)
|
||||
|
||||
|
||||
/*
|
||||
* pwnWrite:
|
||||
* pwmWrite:
|
||||
* Set an output PWM value
|
||||
*********************************************************************************
|
||||
*/
|
||||
@ -699,8 +886,6 @@ int waitForInterruptGpio (int pin, int mS)
|
||||
}
|
||||
|
||||
|
||||
|
||||
|
||||
/*
|
||||
* delay:
|
||||
* Wait for some number of milli seconds
|
||||
@ -800,9 +985,16 @@ unsigned int millis (void)
|
||||
int wiringPiSetup (void)
|
||||
{
|
||||
int fd ;
|
||||
int boardRev ;
|
||||
uint8_t *gpioMem, *pwmMem, *clkMem, *padsMem, *timerMem ;
|
||||
struct timeval tv ;
|
||||
|
||||
if (getenv ("WIRINGPI_DEBUG") != NULL)
|
||||
wiringPiDebug = TRUE ;
|
||||
|
||||
if (wiringPiDebug)
|
||||
printf ("wiringPi: wiringPiSetup called\n") ;
|
||||
|
||||
pinMode = pinModeWPi ;
|
||||
pullUpDnControl = pullUpDnControlWPi ;
|
||||
digitalWrite = digitalWriteWPi ;
|
||||
@ -813,7 +1005,16 @@ int wiringPiSetup (void)
|
||||
delayMicroseconds = delayMicrosecondsWPi ;
|
||||
pwmSetMode = pwmSetModeWPi ;
|
||||
pwmSetRange = pwmSetRangeWPi ;
|
||||
pwmSetClock = pwmSetClockWPi ;
|
||||
|
||||
if ((boardRev = piBoardRev ()) < 0)
|
||||
return -1 ;
|
||||
|
||||
if (boardRev == 1)
|
||||
pinToGpio = pinToGpioR1 ;
|
||||
else
|
||||
pinToGpio = pinToGpioR2 ;
|
||||
|
||||
// Open the master /dev/memory device
|
||||
|
||||
if ((fd = open ("/dev/mem", O_RDWR | O_SYNC) ) < 0)
|
||||
@ -954,9 +1155,12 @@ int wiringPiSetup (void)
|
||||
|
||||
int wiringPiSetupGpio (void)
|
||||
{
|
||||
int x = wiringPiSetup () ;
|
||||
int x ;
|
||||
|
||||
if (x != 0)
|
||||
if (wiringPiDebug)
|
||||
printf ("wiringPi: wiringPiSetupGpio called\n") ;
|
||||
|
||||
if ((x = wiringPiSetup ()) < 0)
|
||||
return x ;
|
||||
|
||||
pinMode = pinModeGpio ;
|
||||
@ -969,6 +1173,7 @@ int wiringPiSetupGpio (void)
|
||||
delayMicroseconds = delayMicrosecondsWPi ; // Same
|
||||
pwmSetMode = pwmSetModeWPi ;
|
||||
pwmSetRange = pwmSetRangeWPi ;
|
||||
pwmSetClock = pwmSetClockWPi ;
|
||||
|
||||
return 0 ;
|
||||
}
|
||||
@ -989,6 +1194,9 @@ int wiringPiSetupSys (void)
|
||||
struct timeval tv ;
|
||||
char fName [128] ;
|
||||
|
||||
if (wiringPiDebug)
|
||||
printf ("wiringPi: wiringPiSetupSys called\n") ;
|
||||
|
||||
pinMode = pinModeSys ;
|
||||
pullUpDnControl = pullUpDnControlSys ;
|
||||
digitalWrite = digitalWriteSys ;
|
||||
@ -999,6 +1207,7 @@ int wiringPiSetupSys (void)
|
||||
delayMicroseconds = delayMicrosecondsSys ;
|
||||
pwmSetMode = pwmSetModeSys ;
|
||||
pwmSetRange = pwmSetRangeSys ;
|
||||
pwmSetClock = pwmSetClockSys ;
|
||||
|
||||
|
||||
// Open and scan the directory, looking for exported GPIOs, and pre-open
|
||||
|
||||
@ -62,6 +62,9 @@ extern int wiringPiSetupSys (void) ;
|
||||
extern int wiringPiSetupGpio (void) ;
|
||||
extern int wiringPiSetupPiFace (void) ;
|
||||
|
||||
extern int piBoardRev (void) ;
|
||||
extern int wpiPinToGpio (int wpiPin) ;
|
||||
|
||||
extern int wiringPiSetupPiFaceForGpioProg (void) ; // Don't use this - for gpio program only
|
||||
|
||||
extern void (*pinMode) (int pin, int mode) ;
|
||||
@ -73,6 +76,7 @@ extern int (*digitalRead) (int pin) ;
|
||||
extern void (*delayMicroseconds) (unsigned int howLong) ;
|
||||
extern void (*pwmSetMode) (int mode) ;
|
||||
extern void (*pwmSetRange) (unsigned int range) ;
|
||||
extern void (*pwmSetClock) (int divisor) ;
|
||||
|
||||
// Interrupts
|
||||
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user