transport/AT: Make sure PDU has upper case hex digits
Some modems may reject AT+CSIM if PDU contains lower
case hex digits [a-f]. Modem response is "ERROR"
without any error code.
This patch converts each PDU to upper case.
Tested with Sierra Wireless EM7565.
Example:
AT+CSIM=14,"00a40004023F00"
ERROR
AT+CSIM=14,"00A40004023F00"
+CSIM: 4,"612F"
OK
Change-Id: I318e36abc7ae975c62d32b7fe0ec949bf5997d13
diff --git a/pySim/transport/modem_atcmd.py b/pySim/transport/modem_atcmd.py
index ecf463c..eef38cb 100644
--- a/pySim/transport/modem_atcmd.py
+++ b/pySim/transport/modem_atcmd.py
@@ -99,6 +99,9 @@
pass # Nothing to do really ...
def _send_apdu_raw(self, pdu):
+ # Make sure pdu has upper case hex digits [A-F]
+ pdu = pdu.upper()
+
# Prepare the command as described in 8.17
cmd = 'AT+CSIM=%d,\"%s\"' % (len(pdu), pdu)