Interface between Quectel RM500Q and STM32

Technical Subjects
1

Hi There,

I am trying to interface RM500Q with STM32 microcontroller. Can anyone help me with any available resources or application notes related to this topic?

Thanks in advance.

Regards,
Sundar

2

It might be difficult and a hard job.
Because the STM32 cannot comunicate with the STM32 via USB,
Quectel can provide the USB descriptors and the customer should implement the USB host drivers.

3

Hello Bean,

Would you be able to share the descriptors? In an older Quectel forum STM32 and RMU500EK communication - Technical Subjects / Driver - Quectel Forums, I happen to come across the mentioning of a file (Quectel_RG50xQ&RM5xxQ_Series_USB_Descriptor_Introduction_V1.0.pdf). Would this file help us build our own driver for RM500Q?

On a separate note, if we plan to use the RG50xQ Series Modem, could we then send AT commands to it through the UART port from the Microcontrollers UART?

Thanks in advance.

BR
Sundar

4

RM500Q and R500U is not the same.

5

M.2 modem do not have main uart for AT communication.

6

Hello Bean,

Thanks for sharing the document.
Highly appreciated.