RYZ014 Modules
Use Cases with AT Commands
R19AN0075EU0150 Rev.1.50
Page 5 of 76
Mar.15.22
1. General Introduction
The host MCU can interact with the RYZ014 modem either through:
•
AT commands
This is the focus of the current document.
•
PPP protocol
Please refer to the document
Data over UART with PPP
for more details on PPP connection setup with
RYZ014 modules.
Note: Please refer to the System Integration Guide for more information on AT command types and AT
parser implementation advise.
2. Network Connection
By default, the modem starts in state
+CFUN=0,
meaning minimum functionality. It will not try to attach to the
network until the host MCU sets the
+CFUN
state to 1 meaning full functionality.
This section will help you to connect your RYZ014-based device to the network, following these simple steps:
1. Confirm that the SIM card in your device works properly
2. Confirm that your device is configured to interact with your operator’s network
3. Attach your device to the network
2.1 Check that the SIM Card is Ready
2.1.1 Feature Description
Depending on the RYZ014 module used, the modem can support one or two SIM slots (external only or
internal and external). If an internal SIM is soldered in,, the
AT+CSUS
command should be used to switch from
one slot to another.
This section also provides instructions on how to check the SIM card state and lock or unlock the SIM card
with PIN or PUK code.