class GoodFETEM260(GoodFETSPI):
EM260APP=0x01;
seq=0;
class GoodFETEM260(GoodFETSPI):
EM260APP=0x01;
seq=0;
- def EM260trans(self,data):
+ def EM260trans(self,data,retry=1):
"""Exchange data by EM260 SPI. (Slightly nonstandard.)"""
"""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);
self.writecmd(0x01,0x82,len(data),data);
try:
reply=ord(self.data[0]);
if(reply==0x00):
try:
reply=ord(self.data[0]);
if(reply==0x00):
- print "Warning: EM260 rebooted.";
- return self.EM260trans(data);
+ #print "Warning: EM260 rebooted.";
+ return self.EM260trans(data,retry-1);
- print "Error: Aborted Transaction.";
- #return self.EM260trans(data);
+ #print "Error: Aborted Transaction.";
+ return self.EM260trans(data,retry-1);
if(reply==0x03):
print "Error: Missing Frame Terminator.";
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;
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,0x00,
+ ]+frame+[
+ 0xA7]);
+ #s="";
+ #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 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;
+ #return ord(data[0]);
+
def peek8(self,adr):
"""Read a byte from the given address."""
def peek8(self,adr):
"""Read a byte from the given address."""
- data=self.EM260trans([0xfe,0x01,self.seq,0x00,
- 0x49,
- 0xA7]);
- s="";
- for foo in data:
- s=s+"%02x " % ord(foo);
- print s;
+
+ data=self.EZSPtrans([0x47,adr&0xFF]);
+
+ def rand16(self):
+ """Read a byte from the given address."""
+
+ data=self.EZSPtrans([0x49]);
+ return ord(data[6])+(ord(data[7])<<8);
+
def info(self):
"""Read the info bytes."""
def info(self):
"""Read the info bytes."""
+ print "Ember EM26 Z-Stack SPI Module.";
version=self.EM260spiversion();
status=self.EM260spistatus();
print "Version: %i" % (version);
version=self.EM260spiversion();
status=self.EM260spistatus();
print "Version: %i" % (version);
#Dummy read.
#Might read as all ones if chip has a startup delay.
#Dummy read.
#Might read as all ones if chip has a startup delay.
+client.EM260spiversion();
if(sys.argv[1]=="info"):
client.info();
if(sys.argv[1]=="info"):
client.info();
client.info();
client.info();
client.info();
client.info();
client.info();
client.info();
+
+ print "Some random numbers from EZSP."
+ for foo in range(0,4):
+ print "%04x" % client.rand16();
+
if(sys.argv[1]=="dump"):
f = sys.argv[2];
start=0x0000;
if(sys.argv[1]=="dump"):
f = sys.argv[2];
start=0x0000;