Hi Martin,
On 10/7/19 4:39 PM, Martin Hundebøll wrote:
Use at_util_sim_state_query_new() to query the sim inserted state. Once
that returns, the locked state is queried by issuing a AT+CPIN? command.
If not locked, a timer is started to query the quectel init status of
the sim. Once the init status is ready, the sim atom is created, and the
modem is set to powered, and the sim is signaled both inserted, and
initialized.
If locked, the modem is set to powered, and the sim atom is created.
This allows users to enter the pin to unlock the sim. Once the sim is
unlocked, a +CPIN: READY indication is caught to query the quectel
init status. Once the init status is ready, the sim is signaled
initialized.
All the above is needed, because the modem indicated +CPIN: READY before
the sim is really ready. The only way to be certain, is to wait for the
quectel init status to be ready. Even signaling the sim inserted
prematurely can cause to modem to hang during the initial AT+CRSM
commands.
---
Changes since v2:
* None
Applied, thanks.
Regards,
-Denis
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