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mirror of https://github.com/node-red/node-red.git synced 2023-10-10 13:36:53 +02:00

Add byte mode and mouse buttons to Pi node

This commit is contained in:
dceejay 2015-01-06 22:06:28 +00:00
parent 65e4d83625
commit 25537e01d4
3 changed files with 136 additions and 1 deletions

View File

@ -288,3 +288,47 @@
}
});
</script>
<script type="text/x-red" data-template-name="rpi-mouse">
<div class="form-row">
<label for="node-input-butt"><i class="fa fa-circle"></i> Button</label>
<select type="text" id="node-input-butt" style="width: 250px;">
<option value="1">left</option>
<option value="2">right</option>
<option value="4">middle</option>
<option value="7">any</option>
</select>
</div>
<div class="form-row">
<label for="node-input-name"><i class="fa fa-tag"></i> Name</label>
<input type="text" id="node-input-name" placeholder="Name">
</div>
</script>
<script type="text/x-red" data-help-name="rpi-mouse">
<p>Raspberry Pi mouse button node. Generates a <b>msg.payload</b> with
either a 1 or 0 when the selected mouse button is pressed and released</p>
<p>Also sets <b>msg.button</b> to the code value, 1 = left, 2 = right, 4 = middle,
so you can work out which button or combination was pressed.</p>
<p>And sets <b>msg.topic</b> to <i>pi/mouse</i>.</p>
</script>
<script type="text/javascript">
RED.nodes.registerType('rpi-mouse',{
category: 'Raspberry Pi',
color:"#c6dbef",
defaults: {
name: { value:"" },
butt: { value:"1",required:true }
},
inputs:0,
outputs:1,
icon: "rpi.png",
label: function() {
return this.name||"Pi Mouse" ;
},
labelStyle: function() {
return this.name?"node_label_italic":"";
}
});
</script>

View File

@ -38,6 +38,9 @@ module.exports = function(RED) {
throw "Error : nrgpio must to be executable.";
}
// the magic to make python print stuff immediately
process.env.PYTHONUNBUFFERED = 1;
var pinsInUse = {};
var pinTypes = {"out":"digital output", "tri":"input", "up":"input with pull up", "down":"input with pull down", "pwm":"PWM output"};
@ -209,6 +212,48 @@ module.exports = function(RED) {
});
RED.nodes.registerType("rpi-gpio out",GPIOOutNode);
function PiMouseNode(n) {
RED.nodes.createNode(this,n);
this.butt = n.butt || 7;
var node = this;
node.child = spawn(gpioCommand+".py", ["mouse",node.butt]);
node.status({fill:"green",shape:"dot",text:"OK"});
node.child.stdout.on('data', function (data) {
data = Number(data);
if (data === 0) { node.send({ topic:"pi/mouse", button:data, payload:0 }); }
else { node.send({ topic:"pi/mouse", button:data, payload:1 }); }
});
node.child.stderr.on('data', function (data) {
if (RED.settings.verbose) { node.log("err: "+data+" :"); }
});
node.child.on('close', function (code) {
if (RED.settings.verbose) { node.log("ret: "+code+" :"); }
node.child = null;
node.running = false;
node.status({fill:"red",shape:"circle",text:""});
});
node.child.on('error', function (err) {
if (err.errno === "ENOENT") { node.warn('Command not found'); }
else if (err.errno === "EACCES") { node.warn('Command not executable'); }
else { node.log('error: ' + err); }
});
node.on("close", function() {
if (node.child != null) {
node.child.kill('SIGINT');
node.child = null;
}
node.status({fill:"red",shape:"circle",text:""});
if (RED.settings.verbose) { node.log("end"); }
});
}
RED.nodes.registerType("rpi-mouse",PiMouseNode);
RED.httpAdmin.get('/rpi-gpio/:id',function(req,res) {
res.send( JSON.stringify(pitype) );
});

48
nodes/core/hardware/nrgpio.py Normal file → Executable file
View File

@ -1,3 +1,4 @@
#!/usr/bin/python
#
# Copyright 2014 IBM Corp.
#
@ -43,7 +44,7 @@ if len(sys.argv) > 1:
except Exception as ex:
print "bad data: "+data
if cmd == "buzz":
elif cmd == "buzz":
#print "Initialised pin "+str(pin)+" to Buzz"
GPIO.setup(pin,GPIO.OUT)
p = GPIO.PWM(pin, 100)
@ -115,11 +116,56 @@ if len(sys.argv) > 1:
GPIO.cleanup(pin)
sys.exit(0)
elif cmd == "byte":
#print "Initialised BYTE mode - "+str(pin)+
list = [7,11,13,12,15,16,18,22]
GPIO.setup(list,GPIO.OUT)
while True:
try:
data = raw_input()
if data == "close":
GPIO.cleanup()
sys.exit(0)
data = int(data)
except EOFError: # hopefully always caused by us sigint'ing the program
GPIO.cleanup()
sys.exit(0)
except:
data = 0
for bit in range(8):
if pin == 1:
mask = 1 << (7 - bit)
else:
mask = 1 << bit
GPIO.output(list[bit], data & mask)
elif cmd == "rev":
print GPIO.RPI_REVISION
elif cmd == "ver":
print GPIO.VERSION
elif cmd == "mouse": # catch mice button events
file = open( "/dev/input/mice", "rb" )
oldbutt = 0
def getMouseEvent():
global oldbutt
global pin
buf = file.read(3)
pin = pin & 0x07
button = ord( buf[0] ) & pin # mask out just the required button(s)
if button != oldbutt: # only send if changed
oldbutt = button
print button
while True:
try:
getMouseEvent()
except:
file.close()
sys.exit(0)
else:
print "Bad parameters - {in|out|pwm} {pin} {value|up|down}"