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+--- Thread: Article: NuttX RTOS for PinePhone: USB with Enhanced Host Controller Interface (/showthread.php?tid=18068)
Article: NuttX RTOS for PinePhone: USB with Enhanced Host Controller Interface - lupyuen - 03-23-2023
Weeks ago we talked about porting Apache NuttX RTOS (Real-Time Operating System) to PinePhone, and how we might turn it into a Feature Phone.
But to make phone calls and send text messages, we need to control the LTE Modem over USB. Thus today we’ll build a USB Driver for NuttX on PinePhone…
1. What’s USB Enhanced Host Controller Interface (EHCI)
2. Why it’s simpler than USB On-The-Go (OTG)
3. How we ported the USB EHCI Driver from NuttX to PinePhone
4. Handling USB Clocks and USB Resets on PinePhone (with tips from U-Boot Bootloader)
5. And the NuttX EHCI Driver boots OK on PinePhone!
NuttX RTOS for PinePhone: Simpler USB with EHCI (Enhanced Host Controller Interface)
RE: Article: NuttX RTOS for PinePhone: USB with Enhanced Host Controller Interface - moodroid - 04-07-2023
Thanks so much for all your hard work on this, and really enjoying all your posts.
Really hoping you'll be the first person to get the modem working 100%. Could be a game changer!
Article: NuttX RTOS for PinePhone: USB with Enhanced Host Controller Interface - lupyuen - 04-07-2023
Thank you so much for reading :-)