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Merge pull request #444 from penfold42/master

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Add UDP protocol support

Former-commit-id: b2d91d3963e7eeacfc7d57a507cfc70f32ac9a5d
This commit is contained in:
tvdzwan 2016-02-23 21:02:39 +01:00
commit 78b1c6fe39
9 changed files with 341 additions and 9 deletions
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4
bin/install_hyperion.sh
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@ -40,7 +40,7 @@ if [ $IS_OPENELEC -eq 1 ]; then
if [ $IS_IMX6 -eq 1 ]; then
curl -L --get https://raw.githubusercontent.com/tvdzwan/hyperion/master/deploy/hyperion_imx6.tar.gz | tar -C /storage -xz
else
curl -L --get https://raw.githubusercontent.com/tvdzwan/hyperion/master/deploy/hyperion.tar.gz | tar -C /storage -xz
curl -L --get https://raw.githubusercontent.com/tvdzwan/hyperion/master/deploy/hyperion_rpi.tar.gz | tar -C /storage -xz
fi
curl -L --get https://raw.githubusercontent.com/tvdzwan/hyperion/master/deploy/hyperion.deps.openelec-rpi.tar.gz | tar -C /storage/hyperion/bin -xz
# modify the default config to have a correct effect path
@ -49,7 +49,7 @@ else
if [ $IS_IMX6 -eq 1 ]; then
wget https://raw.githubusercontent.com/tvdzwan/hyperion/master/deploy/hyperion_imx6.tar.gz -O - | tar -C /opt -xz
else
wget https://raw.githubusercontent.com/tvdzwan/hyperion/master/deploy/hyperion.tar.gz -O - | tar -C /opt -xz
wget https://raw.githubusercontent.com/tvdzwan/hyperion/master/deploy/hyperion_rpi.tar.gz -O - | tar -C /opt -xz
fi
fi

57
doc/UDP_led_driver.txt Normal file
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@ -0,0 +1,57 @@
BACKGROUND
---------------------------------------------------------
The UDP led device type can be used to send LED data over UDP packets.
It was originally designed to support an ESP8266 Wifi module based WS2812
LED strip controller.
I've used this to support :
- A string of 600 LEDs as xmas decorations
The effects development kit is great for these scenarios
- a 61 LED collection of concentric circles
This has been used as a "night light" and a super lo-res
TV
In each of these cases, the hyperion-remote iOS app is a great way to
control the effects.
CONFIG
---------------------------------------------------------
Simple example for devices that support a raw binary protocol.
"device" :
{
"name" : "MyPi",
"type" : "udp",
"output" : "esp201-0.home:2391", "protocol" : 0,
"rate" : 1000000,
"colorOrder" : "grb"
},
If you are using an ESP8266/Arduino device with a long LED strip, you chould use this alternate protocol.
The ESP8266/Arduino doesnt support datagram re-assembly so will never see any udp packets greater than 1450.
"device" :
{
"name" : "MyPi",
"type" : "udp",
// "output" : "esp201-0.home:2392", "protocol" : 2, "maxpacket" : 1450,
"rate" : 1000000,
"colorOrder" : "rgb"
},
PROTOCOL
---------------------------------------------------------
Simple UDP packets are sent.
Packet Format protocol 0:
3 bytes per LED as R, G, B
Packet Format protocol 2:
0: update number & 0xf;
1: fragment of this update
2: 1st led# of this update - high byte
3: 1st led# of this update - low byte
4..n 3 bytes per LED as R, G, B

8
effects/udp.json Normal file
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@ -0,0 +1,8 @@
{
"name" : "UDP listener",
"script" : "udp.py",
"args" :
{
"udpPort" : 2391
}
}

47
effects/udp.py Normal file
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@ -0,0 +1,47 @@
import hyperion
import time
import colorsys
import socket
import errno
# Get the parameters
udpPort = int(hyperion.args.get('udpPort', 2812))
UDPSock = socket.socket(socket.AF_INET,socket.SOCK_DGRAM)
UDPSock.setblocking(False)
listen_addr = ("",udpPort)
print "udp.py: bind socket port:",udpPort
UDPSock.bind(listen_addr)
hyperion.setColor(hyperion.ledCount * bytearray((int(0), int(0), int(0))) )
# Start the write data loop
while not hyperion.abort():
try:
data,addr = UDPSock.recvfrom(4500)
# print data.strip(),len(data),addr
if (len(data)%3 == 0):
# print "numleds ",len(data)/3
ledData = bytearray()
for i in range(hyperion.ledCount):
if (i<(len(data)/3)):
ledData += data[i*3+0]
ledData += data[i*3+1]
ledData += data[i*3+2]
else:
ledData += bytearray((int(0), int(0), int(0)))
hyperion.setColor(ledData)
else:
print "not div 3"
except IOError as e:
if e.errno == errno.EWOULDBLOCK:
pass
else:
print "errno:", e.errno
print "udp.py: closing socket"
UDPSock.close()

2
libsrc/leddevice/CMakeLists.txt
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@ -35,6 +35,7 @@ SET(Leddevice_HEADERS
${CURRENT_SOURCE_DIR}/LedDeviceSedu.h
${CURRENT_SOURCE_DIR}/LedDeviceTest.h
${CURRENT_SOURCE_DIR}/LedDeviceFadeCandy.h
${CURRENT_SOURCE_DIR}/LedDeviceUdp.h
${CURRENT_SOURCE_DIR}/LedDeviceHyperionUsbasp.h
${CURRENT_SOURCE_DIR}/LedDeviceTpm2.h
${CURRENT_SOURCE_DIR}/LedDeviceAtmo.h
@ -57,6 +58,7 @@ SET(Leddevice_SOURCES
${CURRENT_SOURCE_DIR}/LedDeviceSedu.cpp
${CURRENT_SOURCE_DIR}/LedDeviceTest.cpp
${CURRENT_SOURCE_DIR}/LedDeviceFadeCandy.cpp
${CURRENT_SOURCE_DIR}/LedDeviceUdp.cpp
${CURRENT_SOURCE_DIR}/LedDeviceHyperionUsbasp.cpp
${CURRENT_SOURCE_DIR}/LedDevicePhilipsHue.cpp
${CURRENT_SOURCE_DIR}/LedDeviceTpm2.cpp

9
libsrc/leddevice/LedDeviceFactory.cpp
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@ -31,6 +31,7 @@
#include "LedDeviceSedu.h"
#include "LedDeviceTest.h"
#include "LedDeviceFadeCandy.h"
#include "LedDeviceUdp.h"
#include "LedDeviceHyperionUsbasp.h"
#include "LedDevicePhilipsHue.h"
#include "LedDeviceTpm2.h"
@ -251,6 +252,14 @@ LedDevice * LedDeviceFactory::construct(const Json::Value & deviceConfig)
const uint16_t channel = deviceConfig.get("channel", 0).asInt();
device = new LedDeviceFadeCandy(host, port, channel);
}
else if (type == "udp")
{
const std::string output = deviceConfig["output"].asString();
const unsigned rate = deviceConfig["rate"].asInt();
const unsigned protocol = deviceConfig["protocol"].asInt();
const unsigned maxPacket = deviceConfig["maxpacket"].asInt();
device = new LedDeviceUdp(output, rate, protocol, maxPacket);
}
else if (type == "tpm2")
{
const std::string output = deviceConfig["output"].asString();

6
libsrc/leddevice/LedDeviceFadeCandy.cpp
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@ -1,8 +1,8 @@
#include "LedDeviceFadeCandy.h"
static const unsigned MAX_NUM_LEDS = 10000; // OPC can handle 21845 leds - in theory, fadecandy device should handle 10000 leds
static const unsigned OPC_SET_PIXELS = 0; // OPC command codes
static const unsigned OPC_HEADER_SIZE = 4; // OPC header size
static const ssize_t MAX_NUM_LEDS = 10000; // OPC can handle 21845 leds - in theory, fadecandy device should handle 10000 leds
static const ssize_t OPC_SET_PIXELS = 0; // OPC command codes
static const ssize_t OPC_HEADER_SIZE = 4; // OPC header size
LedDeviceFadeCandy::LedDeviceFadeCandy(const std::string& host, const uint16_t port, const unsigned channel) :

165
libsrc/leddevice/LedDeviceUdp.cpp Normal file
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@ -0,0 +1,165 @@
// Local-Hyperion includes
#include "LedDeviceUdp.h"
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <assert.h>
struct addrinfo hints, *servinfo, *p;
//char udpbuffer[1024];
int sockfd;
int ledprotocol;
int leds_per_pkt;
int update_number;
int fragment_number;
LedDeviceUdp::LedDeviceUdp(const std::string& output, const unsigned baudrate, const unsigned protocol, const unsigned maxPacket)
//LedDeviceUdp::LedDeviceUdp(const std::string& output, const unsigned baudrate) :
// _ofs(output.empty()?"/home/pi/LedDevice.out":output.c_str())
{
std::string hostname;
std::string port;
ledprotocol = protocol;
leds_per_pkt = ((maxPacket-4)/3);
if (leds_per_pkt <= 0) {
leds_per_pkt = 200;
}
//printf ("leds_per_pkt is %d\n", leds_per_pkt);
int got_colon=0;
for (unsigned int i=0; i<output.length(); i++) {
if (output[i] == ':') {
got_colon++;
} else if (got_colon == 0) {
hostname+=output[i];
} else {
port+=output[i];
}
}
//std::cout << "output " << output << " hostname " << hostname << " port " << port <<std::endl;
assert(got_colon==1);
int rv;
memset(&hints, 0, sizeof hints);
hints.ai_family = AF_UNSPEC;
hints.ai_socktype = SOCK_DGRAM;
if ((rv = getaddrinfo(hostname.c_str() , port.c_str(), &hints, &servinfo)) != 0) {
fprintf(stderr, "getaddrinfo: %s\n", gai_strerror(rv));
assert(rv==0);
}
// loop through all the results and make a socket
for(p = servinfo; p != NULL; p = p->ai_next) {
if ((sockfd = socket(p->ai_family, p->ai_socktype,
p->ai_protocol)) == -1) {
perror("talker: socket");
continue;
}
break;
}
if (p == NULL) {
fprintf(stderr, "talker: failed to create socket\n");
assert(p!=NULL);
}
}
LedDeviceUdp::~LedDeviceUdp()
{
// empty
}
int LedDeviceUdp::write(const std::vector<ColorRgb> & ledValues)
{
char udpbuffer[4096];
int udpPtr=0;
update_number++;
update_number &= 0xf;
if (ledprotocol == 0) {
int i=0;
for (const ColorRgb& color : ledValues)
{
if (i<4090) {
udpbuffer[i++] = color.red;
udpbuffer[i++] = color.green;
udpbuffer[i++] = color.blue;
}
//printf ("c.red %d sz c.red %d\n", color.red, sizeof(color.red));
}
sendto(sockfd, udpbuffer, i, 0, p->ai_addr, p->ai_addrlen);
}
if (ledprotocol == 1) {
#define MAXLEDperFRAG 450
int mLedCount = ledValues.size();
for (int frag=0; frag<4; frag++) {
udpPtr=0;
udpbuffer[udpPtr++] = 0;
udpbuffer[udpPtr++] = 0;
udpbuffer[udpPtr++] = (frag*MAXLEDperFRAG)/256; // high byte
udpbuffer[udpPtr++] = (frag*MAXLEDperFRAG)%256; // low byte
int ct=0;
for (int this_led = frag*300; ((this_led<mLedCount) && (ct++<MAXLEDperFRAG)); this_led++) {
const ColorRgb& color = ledValues[this_led];
if (udpPtr<4090) {
udpbuffer[udpPtr++] = color.red;
udpbuffer[udpPtr++] = color.green;
udpbuffer[udpPtr++] = color.blue;
}
}
if (udpPtr > 7)
sendto(sockfd, udpbuffer, udpPtr, 0, p->ai_addr, p->ai_addrlen);
}
}
if (ledprotocol == 2) {
udpPtr = 0;
unsigned int ledCtr = 0;
fragment_number = 0;
udpbuffer[udpPtr++] = update_number & 0xf;
udpbuffer[udpPtr++] = fragment_number++;
udpbuffer[udpPtr++] = ledCtr/256; // high byte
udpbuffer[udpPtr++] = ledCtr%256; // low byte
for (const ColorRgb& color : ledValues)
{
if (udpPtr<4090) {
udpbuffer[udpPtr++] = color.red;
udpbuffer[udpPtr++] = color.green;
udpbuffer[udpPtr++] = color.blue;
}
ledCtr++;
if ( (ledCtr % leds_per_pkt == 0) || (ledCtr == ledValues.size()) ) {
sendto(sockfd, udpbuffer, udpPtr, 0, p->ai_addr, p->ai_addrlen);
memset(udpbuffer, 0, sizeof udpbuffer);
udpPtr = 0;
udpbuffer[udpPtr++] = update_number & 0xf;
udpbuffer[udpPtr++] = fragment_number++;
udpbuffer[udpPtr++] = ledCtr/256; // high byte
udpbuffer[udpPtr++] = ledCtr%256; // low byte
}
}
}
return 0;
}
int LedDeviceUdp::switchOff()
{
// return write(std::vector<ColorRgb>(mLedCount, ColorRgb{0,0,0}));
return 0;
}

44
libsrc/leddevice/LedDeviceUdp.h Normal file
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@ -0,0 +1,44 @@
#pragma once
// STL includes0
#include <fstream>
// Leddevice includes
#include <leddevice/LedDevice.h>
///
/// Implementation of the LedDevice that write the led-colors to an
/// ASCII-textfile('/home/pi/LedDevice.out')
///
class LedDeviceUdp : public LedDevice
{
public:
///
/// Constructs the test-device, which opens an output stream to the file
///
LedDeviceUdp(const std::string& output, const unsigned baudrate, const unsigned protocol, const unsigned maxPacket);
///
/// Destructor of this test-device
///
virtual ~LedDeviceUdp();
///
/// Writes the given led-color values to the output stream
///
/// @param ledValues The color-value per led
///
/// @return Zero on success else negative
///
virtual int write(const std::vector<ColorRgb> & ledValues);
/// Switch the leds off
virtual int switchOff();
private:
/// The outputstream
// std::ofstream _ofs;
/// the number of leds (needed when switching off)
size_t mLedCount;
};