https://w.electrodragon.com/w/index.php?action=history&feed=atom&title=SIM868_Debug 2026-06-04T22:30:48Z Revision history for this page on the wiki MediaWiki 1.37.2 https://w.electrodragon.com/w/index.php?title=SIM868_Debug&diff=32514&oldid=prev 2022-01-21T06:53:27Z

<p></p> <p><b>New page</b></p><div>Problem: Can not correctly receive the GNSS output<br /> AT+CGNSINF<br /> +CGNSINF: 0,,,,,,,,,,,,,,,,,,,,<br /> * This is a problem of the latest simcom firmware, it does not happened in old modules, but in new modules.<br /> * The GNSS output port baudrate at 9600, but UART2 baudrate is not at 9600 by default, these two should be set to match<br /> <br /> <br /> &lt;br&gt;<br /> <br /> Solve: <br /> * Set the correct baudrate for UART2 before to receive GPS data<br /> * by commands AT+CGNSIPR=9600<br /> &lt;br&gt;<br /> <br /> * We tested all units before send, but the commands data maybe not saved into module, we are still looking for better solutions?<br /> <br /> <br /> <br /> send PMTK commands <br /> AT+CGNSCMD=0,&quot;$PMTK000*32&quot;<br /> <br /> <br /> == Version ==<br /> AT+GSV<br /> SIMCOM_Ltd<br /> SIMCOM_SIM868<br /> Revision:1418B03SIM868M32_OFO<br /> AT+CGNSVER<br /> AXN_5.0_3333_17022400,0000,B03V02SIM868_11,<br /> <br /> check GNSS version<br /> AT+CGNSVER<br /> AXN_3.82_3333_16092900,0000,,*2A<br /> <br /> AXN_5.0_3333_17022400,0000,B03V02SIM868_11,<br /> <br /> <br /> [[category: SIM868]]</div>

Chao