# The delay is mandatory.
-import sys, time, string, cStringIO, struct, glob, serial, os;
+import sys, time, string, cStringIO, struct, glob, os;
from GoodFETSPI import GoodFETSPI;
class GoodFETEM260(GoodFETSPI):
EM260APP=0x01;
+ seq=0;
+ def EM260trans(self,data,retry=1):
+ """Exchange data by EM260 SPI. (Slightly nonstandard.)"""
+
+ if retry==0:
+ #Retries exceeded. Send a trivial command to clear error.
+ data=[0x0A,0xA7];
+ self.writecmd(0x01,0x82,len(data),data);
+
+
+ try:
+ reply=ord(self.data[0]);
+ if(reply==0x00):
+ #print "Warning: EM260 rebooted.";
+ return self.EM260trans(data,retry-1);
+ if(reply==0x02):
+ #print "Error: Aborted Transaction.";
+ return self.EM260trans(data,retry-1);
+ if(reply==0x03):
+ print "Error: Missing Frame Terminator.";
+ return self.data;
+ if(reply==0x04):
+ print "Error: Reserved Error. (Access denied?)";
+ return self.data;
+ except:
+ print "Error in EM260trans.";
+ return self.data;
+
+ def EZSPtrans(self,frame):
+ """Send an EZSP frame."""
+ data=self.EM260trans([0xFE,len(frame)+2,
+ self.seq&0xFF,0x00,
+ ]+frame+[
+ 0xA7]);
+ s="EZSP< ";
+ for foo in data:
+ s=s+"%02x " % ord(foo);
+ print s;
+
+ if ord(data[0])!=0xFE:
+ print "EZSP error: 0x%02x" % ord(data[0]);
+ if ord(data[4])==0x58:
+ print "EZSP Invalid Command because 0x%02x" % ord(data[5]);
+ return data;
+ if frame[0]!=ord(data[4]):
+ print "EZSP warning: Command 0x%02x returned type 0x%02x." % (
+ frame[0],ord(data[4]));
+ self.seq=self.seq+1;
+ return data;
+
def peek8(self,adr):
- """Read a byte from the given address."""
- data=self.SPItrans([0xfe,0x01,0x00,
- 0x49,
- 0xA7,0,0,0,0,0,0,0,0]);
- return ord(data[7]);
- def poke8(self,adr, byte):
- """Poke a byte to the given address."""
+ """Read a byte from the given address. Untested."""
+
+ data=self.EZSPtrans([0x47,adr&0xFF,10]);
+
+ return ord(data[6]);
+ def poke8(self,adr,val):
+ """Poke a value into RAM. Untested"""
+ self.EZSPtrans([0x46,adr&0xFF,1,val&0xFF]);
+ return val;
+ def rand16(self):
+ """Read a random 16-bit word."""
+
+ data=self.EZSPtrans([0x49]);
+ if data==None:
+ print "Insufficient random data.";
+ return 0;
+ return ord(data[6])+(ord(data[7])<<8);
+
def info(self):
"""Read the info bytes."""
- data=self.SPItrans([0x0B,0xA7,
- 0xFF,
- 0xFF,0xFF,0xFF, #00 02 A7
- 0,0,0,0,0,0,0,0,0,0,
- 0,0,0,0,0,0,0,0,0,0,
- 0,0,0,0,0,0,0,0,0,0,
- 0,0,0,0,0,0,0,0,0,0,
- 0,0,0,0,0,0,0,0,0,0,
- 0,0,0,0,0,0,0,0,0,0
- ]);
- for foo in data:
- print "%02x" % ord(foo);
+ print "Ember EM26 Z-Stack SPI Module.";
+ version=self.EM260spiversion();
+ status=self.EM260spistatus();
+ print "Version: %i" % (version);
+ print "Status: %s" % (["dead","alive"][status]);
+ print ""
+ self.setVersion();
+ print "Node ID: %04x" % (self.getNodeID());
+ print "Connected to %2i neighbors." % self.neighborCount();
+ def EM260spiversion(self):
+ """Read the SPI version number from EM260."""
+ data=self.EM260trans([0x0A,0xA7]);
+ version=ord(data[0]);
+
+ if version==0x00:
+ return self.EM260spiversion();
+ if version==0x02:
+ return self.EM260spiversion();
+ if not version&0x80:
+ print "Version misread.";
+ return 0;
+ return version&0x7F;
+
+ def EM260spistatus(self):
+ """Read the status bit."""
+ data=self.EM260trans([0x0B,0xA7]);
+ status=ord(data[0]);
+
+ if status==0x00:
+ return self.EM260spistatus();
+ if status==0x02:
+ return self.EM260spistatus();
+ if not status&0x80 and status&0x40:
+ print "Status misread.";
+ return 0;
+ return status&1;
+
+ #Everything after here is ZigBee.
+
+ def getNodeID(self):
+ """Read the EZSP node id."""
+
+ data=self.EZSPtrans([0x27]);
+ return ord(data[5])+(ord(data[6])<<8);
+ def neighborCount(self):
+ """Read the count of neighbors, used for iterating the neighbor table."""
+
+ data=self.EZSPtrans([0x7A]);
+ return ord(data[5]);
+ def setRadioChannel(self,channel):
+ """Set the radio channel."""
+
+ data=self.EZSPtrans([0x9A, channel&xFF]);
+ return ord(data[5]);
+ def setVersion(self,version=2):
+ """Set the requested EZSP protocol version."""
+
+ data=self.EZSPtrans([0x00, version]);
+ newversion=ord(data[5]);
+ if version==newversion:
+ print "Version set."
+ print "Protocol %i, stack type %i, Stack Version 0x%02x%02x." % (
+ newversion,
+ ord(data[6]),
+ ord(data[8]),
+ ord(data[7]));
+ else:
+ self.setVersion(newversion);
projects / goodfet / blobdiff