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Published 20 hours ago • verified publisher icon estkme-group

Working AT driver for MC7455 and EM7590, not tested with anything else

Open urielka opened this issue 6 months ago • 1 comments

Seems like with sierra wireless there are 3 issues with the existing AT code:

  1. They work with logic channels that aren't integers, they use a big hex number
AT_DEBUG: AT+CCHO="A0000005591010FFFFFFFF8900000100"
AT_DEBUG: +CCHO: 00000000038aa32f
  1. The code assumes that the number returned from CCHO is the logic channel number for the eUICC and should be added to the CLA base (0x80) which results in cases sending 0x8F which seems to work with some eUICC. see: https://github.com/estkme-group/lpac/issues/138 for explanation
  2. The code checks for AT+CGLA=? running OK as a way to detect if AT+CGLA= is supported but it doesn't mean that. in EM7590 AT+CGLA= is supported and AT+CGLA=? isn't

The following code was only tested with MC7455 and EM7590. tested with esim.me sim and sysmocom (https://shop.sysmocom.de/sysmoEUICC1-eUICC-for-consumer-eSIM-RSP/sysmoEUICC1-C2G)

urielka avatar Aug 01 '24 20:08 urielka