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initial, originally forked from openvg examples

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font2openvg
*~
*.o
*.so
DejaVuSans.inc 0 → 100644
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Copyright (C) 2012 Anthony Starks
Permission is hereby granted, free of charge, to any person obtaining a copy of this software
and associated documentation files (the "Software"), to deal in the Software without
restriction, including without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or
substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE
AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
The images in this repository are Licensed under
the Creative Commons Attribution 3.0 license as described in
http://creativecommons.org/licenses/by/3.0/us/
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Makefile 0 → 100644
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INCLUDEFLAGS=-I/opt/vc/include -I/opt/vc/include/interface/vmcs_host/linux -I/opt/vc/include/interface/vcos/pthreads
LIBFLAGS=-L/opt/vc/lib -lGLESv2 -lEGL -ljpeg
FONTLIB=/usr/share/fonts/truetype/ttf-dejavu
FONTFILES=DejaVuSans.inc
all: font2openvg fonts library
libshapes.o: libshapes.c shapes.h fontinfo.h fonts
gcc -O2 -Wall $(INCLUDEFLAGS) -c libshapes.c
gopenvg: openvg.go
go install .
oglinit.o: oglinit.c
gcc -O2 -Wall $(INCLUDEFLAGS) -c oglinit.c
font2openvg: fontutil/font2openvg.cpp
g++ -I/usr/include/freetype2 fontutil/font2openvg.cpp -o font2openvg -lfreetype
fonts: $(FONTFILES)
DejaVuSans.inc: font2openvg $(FONTLIB)/DejaVuSans.ttf
./font2openvg $(FONTLIB)/DejaVuSans.ttf DejaVuSans.inc DejaVuSans
DejaVuSerif.inc: font2openvg $(FONTLIB)/DejaVuSerif.ttf
./font2openvg $(FONTLIB)/DejaVuSerif.ttf DejaVuSerif.inc DejaVuSerif
DejaVuSansMono.inc: font2openvg $(FONTLIB)/DejaVuSansMono.ttf
./font2openvg $(FONTLIB)/DejaVuSansMono.ttf DejaVuSansMono.inc DejaVuSansMono
clean:
rm -f *.o *.inc *.so font2openvg *.c~ *.h~
indent -linux -c 60 -brf -l 132 libshapes.c oglinit.c shapes.h fontinfo.h
library: oglinit.o libshapes.o
gcc $(LIBFLAGS) -shared -o libshapes.so oglinit.o libshapes.o
install:
install -m 755 -p font2openvg /usr/bin/
install -m 755 -p libshapes.so /usr/lib/libshapes.so.1.0.0
strip --strip-unneeded /usr/lib/libshapes.so.1.0.0
ln -f -s /usr/lib/libshapes.so.1.0.0 /usr/lib/libshapes.so
ln -f -s /usr/lib/libshapes.so.1.0.0 /usr/lib/libshapes.so.1
ln -f -s /usr/lib/libshapes.so.1.0.0 /usr/lib/libshapes.so.1.0
install -m 644 -p shapes.h /usr/include/
install -m 644 -p fontinfo.h /usr/include/
uninstall:
rm -f /usr/bin/font2openvg
rm -f /usr/lib/libshapes.so.1.0.0 /usr/lib/libshapes.so.1.0 /usr/lib/libshapes.so.1 /usr/lib/libshapes.so
rm -f /usr/include/shapes.h /usr/include/fontinfo.h
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# Experimental fork with sample program that crashes after some time.
There are two cases when the program crashes:
1. The screen freezes and the process goes into D state.
2. Random shapes appear on the screen, the process doesn't freeze but slows down by a lot.
<a href="http://www29.speedyshare.com/jZ6Xd/download/IMG-20150117-171229.jpg">Example photo of crash. Notice how display artifacts are somehow bound to all "r" characters seen on that screenshot.</a>
## Build and run
<i>Note that you will need at least 64 Mbytes of GPU RAM:</i>. You will also need the DejaVu fonts, and the jpeg and freetype libraries.
The indent tool is also useful for code formatting. Install them via:
pi@raspberrypi ~ $ sudo apt-get install libjpeg8-dev indent libfreetype6-dev ttf-dejavu-core
Next, build the library, program and test it:
git clone git://github.com/pawelduda/openvg
cd openvg
make
cd client
make digital-signage
./digital-signage
To install the shapes library as a system-wide shared library
pi@raspberrypi ~/openvg $ make library
pi@raspberrypi ~/openvg $ sudo make install
The openvg shapes library can now be used in C code by including shapes.h and fontinfo.h and linking with libshapes.so:
#include <shapes.h>
#include <fontinfo.h>
pi@raspberrypi ~ $ gcc -lshapes anysource.c
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INCLUDEFLAGS=-I/opt/vc/include -I/opt/vc/include/interface/vmcs_host/linux -I/opt/vc/include/interface/vcos/pthreads -I..
LIBFLAGS=-L/opt/vc/lib -lm -lGLESv2 -lEGL -lbcm_host -lpthread -ljpeg -lwiringPi
digital_signage:
gcc -Wall $(INCLUDEFLAGS) $(LIBFLAGS) -o digital-signage digital-signage.c ../libshapes.o ../oglinit.o
mouse-hellovg: mouse-hellovg.c
gcc -Wall $(INCLUDEFLAGS) $(LIBFLAGS) -o mouse-hellovg mouse-hellovg.c ../libshapes.o ../oglinit.o
libshapes.o:
cd .. ; make libshapes.o
oglinit.o:
cd .. ; make oglinit.o
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# Compiled Object files
*.slo
*.lo
*.o
# Compiled Dynamic libraries
*.so
*.dylib
# Compiled Static libraries
*.lai
*.la
*.a
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Copyright (C) 2013 halherta
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
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client/RaspberryPi-mcp3008Spi-master/README.md 0 → 100644
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halherta-RaspberryPi-mcp3008Spi
===========================================================================================================
Author: Hussam Al-Hertani
Description: The mcp3008Spi class enables the Raspberry Pi to communicate with the MCP3008 SPI ADC using spidev. The class can be easily modified to enable the Raspberry Pi to communicate with other SPI devices.
============================================================================================================
For more information please visit :
http://hertaville.com/2013/07/24/interfacing-an-spi-adc-mcp3008-chip-to-the-raspberry-pi-using-c/
========================================================================================
To build example binary natively on the Raspberry Pi:
g++ -fpermissive -Wall mcp3008Spi.cpp mcp3008SpiTest.cpp -o outBin
Make sure that the mcp3008Spi.h header file is in the work directory.
client/RaspberryPi-mcp3008Spi-master/mcp3008Spi.cpp 0 → 100644
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#include "mcp3008Spi.h"
using namespace std;
/**********************************************************
* spiOpen() :function is called by the constructor.
* It is responsible for opening the spidev device
* "devspi" and then setting up the spidev interface.
* private member variables are used to configure spidev.
* They must be set appropriately by constructor before calling
* this function.
* *********************************************************/
int mcp3008Spi::spiOpen(std::string devspi){
int statusVal = -1;
this->spifd = open(devspi.c_str(), O_RDWR);
if(this->spifd < 0){
perror("could not open SPI device");
exit(1);
}
statusVal = ioctl (this->spifd, SPI_IOC_WR_MODE, &(this->mode));
if(statusVal < 0){
perror("Could not set SPIMode (WR)...ioctl fail");
exit(1);
}
statusVal = ioctl (this->spifd, SPI_IOC_RD_MODE, &(this->mode));
if(statusVal < 0) {
perror("Could not set SPIMode (RD)...ioctl fail");
exit(1);
}
statusVal = ioctl (this->spifd, SPI_IOC_WR_BITS_PER_WORD, &(this->bitsPerWord));
if(statusVal < 0) {
perror("Could not set SPI bitsPerWord (WR)...ioctl fail");
exit(1);
}
statusVal = ioctl (this->spifd, SPI_IOC_RD_BITS_PER_WORD, &(this->bitsPerWord));
if(statusVal < 0) {
perror("Could not set SPI bitsPerWord(RD)...ioctl fail");
exit(1);
}
statusVal = ioctl (this->spifd, SPI_IOC_WR_MAX_SPEED_HZ, &(this->speed));
if(statusVal < 0) {
perror("Could not set SPI speed (WR)...ioctl fail");
exit(1);
}
statusVal = ioctl (this->spifd, SPI_IOC_RD_MAX_SPEED_HZ, &(this->speed));
if(statusVal < 0) {
perror("Could not set SPI speed (RD)...ioctl fail");
exit(1);
}
return statusVal;
}
/***********************************************************
* spiClose(): Responsible for closing the spidev interface.
* Called in destructor
* *********************************************************/
int mcp3008Spi::spiClose(){
int statusVal = -1;
statusVal = close(this->spifd);
if(statusVal < 0) {
perror("Could not close SPI device");
exit(1);
}
return statusVal;
}
/********************************************************************
* This function writes data "data" of length "length" to the spidev
* device. Data shifted in from the spidev device is saved back into
* "data".
* ******************************************************************/
int mcp3008Spi::spiWriteRead( unsigned char *data, int length){
struct spi_ioc_transfer spi[length];
int i = 0;
int retVal = -1;
bzero(spi, sizeof spi); // ioctl struct must be zeroed
// one spi transfer for each byte
for (i = 0 ; i < length ; i++){
spi[i].tx_buf = (unsigned long)(data + i); // transmit from "data"
spi[i].rx_buf = (unsigned long)(data + i) ; // receive into "data"
spi[i].len = sizeof(*(data + i)) ;
spi[i].delay_usecs = 0 ;
spi[i].speed_hz = this->speed ;
spi[i].bits_per_word = this->bitsPerWord ;
spi[i].cs_change = 0;
}