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Add support for 6 character Maidenhead grid locators #12

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b6cc71f
Properly terminate c-style strings
Jun 24, 2017
f0319af
Store tx power as an int, rather than a string
Jun 24, 2017
75c03f5
Rename makefile -> Makefile to better follow convention
Jun 24, 2017
28faddc
Run code through clang-format to make it easier to read
Jun 24, 2017
a695e4b
Remove redundant uppercasing
Jun 24, 2017
52f7ff0
Add code to support transmitting 6 character Maidenhead grid locators
Jun 25, 2017
707eb9e
Merge https://github.com/JamesP6000/WsprryPi
Jun 25, 2017
78b871e
Fix a couple issues identified with clang's static analyzer
Dec 15, 2017
7c98bbb
Run headers through clang-tidy
Dec 15, 2017
21ae250
Run code through "modernize" clang-tidy checks
Dec 15, 2017
8cee472
Run code through "readability" clang-tidy checks
Dec 15, 2017
f9f1911
Run code through "misc" clang-tidy checks
Dec 15, 2017
bd85459
Compile fixes for Debian "buster"
Jul 21, 2019
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1 change: 1 addition & 0 deletions .gitignore
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Original file line number Diff line number Diff line change
@@ -1,3 +1,4 @@
wspr
gpioclk
mailbox.o
nhash.o
11 changes: 7 additions & 4 deletions makefile → Makefile
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Original file line number Diff line number Diff line change
@@ -1,7 +1,7 @@
prefix=/usr/local

CFLAGS += -Wall
CXXFLAGS += -D_GLIBCXX_DEBUG -std=c++11 -Wall -Werror -fmax-errors=5
CXXFLAGS += -D_GLIBCXX_DEBUG -std=c++14 -Wall -Werror -Wno-psabi
LDLIBS += -lm

ifeq ($(findstring armv6,$(shell uname -m)),armv6)
Expand All @@ -18,11 +18,14 @@ all: wspr gpioclk
mailbox.o: mailbox.c mailbox.h
$(CC) $(CFLAGS) -c mailbox.c

wspr: mailbox.o wspr.cpp mailbox.h
$(CXX) $(CXXFLAGS) $(LDFLAGS) $(LDLIBS) $(PI_VERSION) mailbox.o wspr.cpp -owspr
nhash.o: nhash.c nhash.h
$(CC) $(CFLAGS) -c nhash.c

wspr: mailbox.o nhash.o wspr.cpp mailbox.h
$(CXX) $(CXXFLAGS) $(LDFLAGS) $(LDLIBS) $(PI_VERSION) mailbox.o nhash.o wspr.cpp -o wspr

gpioclk: gpioclk.cpp
$(CXX) $(CXXFLAGS) $(LDFLAGS) $(LDLIBS) $(PI_VERSION) gpioclk.cpp -ogpioclk
$(CXX) $(CXXFLAGS) $(LDFLAGS) $(LDLIBS) $(PI_VERSION) gpioclk.cpp -o gpioclk

clean:
$(RM) *.o gpioclk wspr
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9 changes: 9 additions & 0 deletions README
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Expand Up @@ -79,6 +79,8 @@ Usage: (WSPR --help output):

Transmission gaps can be created by specifying a TX frequency of 0

This program supports both 4 and 6 character Maidenhead grid locators.

Note that 'callsign', 'locator', and 'tx_power_dBm' are simply used to fill
in the appropriate fields of the WSPR message. Normally, tx_power_dBm should
be 10, representing the signal power coming out of the Pi. Set this value
Expand Down Expand Up @@ -202,6 +204,9 @@ Example usage:
The same as above, but without NTP calibration:
sudo ./wspr --free-running N9NNN EM10 33 20m

Specify a 6 character Maidenhead grid locator with TX power 20 dBm on 20m:
sudo ./wspr K0WBG DM65rc 20 20m

Transmit a WSPR transmission slightly off-center on 30m every 10 minutes for
a total of 7 transmissions, and using a fixed PPM correction value.
sudo ./wspr --repeat --terminate 7 --ppm 43.17 N9NNN EM10 33 10140210 0 0 0 0
Expand All @@ -219,6 +224,7 @@ Reference documentation:
http://www.scribd.com/doc/101830961/GPIO-Pads-Control2
https://github.com/mgottschlag/vctools/blob/master/vcdb/cm.yaml
https://www.kernel.org/doc/Documentation/vm/pagemap.txt
https://physics.princeton.edu/pulsar/k1jt/WSPR_2.0_User.pdf (specifically Appendix B)

******
Credits:
Expand Down Expand Up @@ -248,6 +254,9 @@ Credits:
Retzler András (HA7ILM) for the massive changes that were required to
incorporate the mailbox code so that the RPi2 and RPi3 could be supported.

Mathias Gibbens (K0WBG) added support for sending 6 character Maidenhead grid
locators to the program as well as performing some code cleanup.

[1] PiFM code from
http://www.icrobotics.co.uk/wiki/index.php/Turning_the_Raspberry_Pi_Into_an_FM_Transmitter
[2] Original WSPR Pi transmitter code by Dan:
Expand Down
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