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[IMP] hw_escpos: more fault tolerant printer detection

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In some cases, the description fails (unknow printer, udev issues,...) and while
the printer works fine, the description fails.
This commit is contained in:
Martin Trigaux
2016-10-18 11:23:46 +02:00
parent e05dba357e
commit 994d45f478
1 changed files with 6 additions and 1 deletions
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addons/hw_escpos/controllers/main.py
+6 -1
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@@ -77,10 +77,15 @@ class EscposDriver(Thread):
printers = usb.core.find(find_all=True, idVendor=0x0519) printers = usb.core.find(find_all=True, idVendor=0x0519)
for printer in printers: for printer in printers:
try:
description = usb.util.get_string(printer, 256, printer.iManufacturer) + " " + usb.util.get_string(printer, 256, printer.iProduct)
except Exception as e:
_logger.error("Can not get printer description: %s" % (e.message or repr(e)))
description = 'Unknown printer'
connected.append({ connected.append({
'vendor': printer.idVendor, 'vendor': printer.idVendor,
'product': printer.idProduct, 'product': printer.idProduct,
'name': usb.util.get_string(printer, 256, printer.iManufacturer) + " " + usb.util.get_string(printer, 256, printer.iProduct) 'name': description
}) })
return connected return connected