Hi,
I want to use EC25 usb port to connect stm32f407 usb port,but i can find anything in quectel web site or forum.and i cant find any data about this.please help me and guide me to do this work.
I have another question, please tell me whats the different between “USB MODEM” and “USB AT PORT” and “USB NEMA PORT” and “USB DM PORT”
TANKS FOR YOUR HELP
I want to use usb port with micro controller,do you know what i have to do?
i want to use usb but i dont know modem usb mode to config micro controller usb mode.
use uart port instead of the modem usb port for your microcontroller. its be fine for you.
If you want to use with usb. You need to write usb driver for STM32. You can also check stm32f4 usb examples to how your microcontroller communicate over usb.
Dear Samad yarof,
Please refer to the following document to get more information about EC25 USB interface. Hopefully it is useful to you. Thanks! Quectel_EC21&EC25_USB_Interface_Descriptor_V1.0.pdf (290.8 KB)
dear kyson,
I read this pdf and investigate this subjet,i think possibility of this work its 80%,and i need your opinion about this subject.and i need to your help.
i want to connect usb of this module to stm32 microcontroller, in your opinion this work is possible?