RM500U-CN - Switch back from PCIe EP mode to PCIe RC mode without PCIe access (only USB)? Factory reset?

IoT Modules 5G Module
1

Dear Quectel team,

during testing a RM500U-CN module in a prototype board I accidentally switched it into PCIe EP mode (AT+QCFG=“pcie/mode”,0). How can I switch it back to PCIe RP mode without being able to connect it to a PCIe bus directly? My development board does not support this.

Is there a way to factory reset it without having software access to it?

Many thanks & Best,
Mark

2

Dear @vaenner.net
Did you try to configure AT+QCFG=“pcie/mode”,1 and try again?

3

Thanks for your reply!

I do not get any ttyUSB* devices anymore. My evaluation board does not connect the modules PCIe lanes (only USB and Ethernet; sadly also no UART).

Could you please provide me the Quectel_Linux&Android_SPRD_PCIE_Driver? I will order an PCIe Connection board for testing. Many thanks!

4

Dear @vaenner.net
Did you install the USB driver on your side?
The latest PCIe driver is Quectel_Linux_PCIE_MHI_Driver_V1.3.6 , I will sent it to you via Message, please check.

5

Thanks! I downloaded the PCIe driver.

The USB driver is built into the kernel (Debian 6.1.52-1). I was able to connect to the ttyUSB2 device before I accidentally switched to PCIe mode. Now the modem is not found any more by this built in driver.

Or do I miss something?

6

Dear @vaenner.net
Actually, AT+QCFG=“pcie/mode”,0 is USB mode. You can try to install USB driver again.

7

Could you please send me the the most recent USB driver? Thanks!

8

Also, could please send me the latest firmware for a RM500U-CN and the Quectel_RGx00U&RM500U_Series_AT_Commands_Manual?

I only received this AT commands PDF: “Quectel_RG50xQ&RM5xxQ_Series_AT_Commands_Manual_V1.1.1_Preliminary_20201009”

Again, many thanks!

9

Dear silvia
Could you please send me the latest Quectel_Linux_PCIE_MHI_Driver?

10

Dear @lodyly

Please contact with your provider firstly next time, they have access to get the driver.
Thanks for your understanding.

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