Lup Yuen Lee 李立源 @lupyuen@qoto.org

Here's how we power up #PinePhone's 4G LTE Modem ... With Apache #NuttX RTOS

Article: https://lupyuen.github.io/articles/lte?7#power-up-wth-nuttx

#PinePhone's 4G LTE Modem has more pins than a Bowling Alley! (Almost) ... Here's how they power up the modem

Article: https://lupyuen.github.io/articles/lte?6#power-on-lte-modem

Here's how we validate an Apache #NuttX Release ... We need your help! 🙏

Article: https://lupyuen.github.io/articles/pr#appendix-validate-nuttx-release

#PinePhone's 4G LTE Modem outputs 1.8 Volts ... Because some SIM Cards run on 1.8 Volts

Article: https://lupyuen.github.io/articles/lte?5#power-output

Soft Switch for powering up #PinePhone's 4G LTE Modem, Nokia-style

Article: https://lupyuen.github.io/articles/lte?5#lte-modem-power

#PinePhone's 4G LTE Modem is powered by these pins

Article: https://lupyuen.github.io/articles/lte?5#lte-modem-power

🤔 "Concise dialect of English"

AI understands my articles on PinePhone and NuttX 👍

#PinePhone controls its 4G LTE Modem ... With these GPIO Pins

Article: https://lupyuen.github.io/articles/lte?4#control-pins-for-lte-modem

#PinePhone's 4G LTE Modem has UART, USB and PCM interfaces ... For 4G Mobile Data and Digital Audio

Article: https://lupyuen.github.io/articles/lte?3#data-interfaces-for-lte-modem

#PinePhone's 4G LTE Modem accepts AT Commands ... Over UART (slower) and USB (faster)

Article: https://lupyuen.github.io/articles/lte?2#quectel-eg25-g-lte-modem

Inside #PinePhone is the Quectel EG25-G 4G LTE Modem ... Let's talk about the modem in this article

Article: https://lupyuen.github.io/articles/lte?1

#PinePhone talks to Quectel EG25-G 4G LTE Modem on these pins

Source: https://github.com/lupyuen/pinephone-nuttx-usb#lte-modem-pins

Power up #PinePhone LTE Modem ... Here's how we do it with Apache #NuttX RTOS

Source: https://github.com/lupyuen/pinephone-nuttx-usb#power-on-lte-modem

How we handle USB Interrupts on #PinePhone with Apache #NuttX RTOS

Source: https://github.com/lupyuen/pinephone-nuttx-usb#handle-usb-interrupt

Here's how Apache #NuttX RTOS enumerates USB Devices on #PinePhone

Source: https://github.com/lupyuen/pinephone-nuttx-usb#enumerate-usb-devices-on-pinephone

#NuttX on #PinePhone fails when we enable USB Host ... Wonder why 🤔

Source: https://github.com/lupyuen/pinephone-nuttx-usb#ls-crashes-when-usb-hub-support-is-enabled

Experimenting with Vital Wheat Gluten ... Because Wholemeal Bread feels too crumbly 🤔

Deciphering the USB EHCI Registers on #PinePhone ... That were logged by Apache #NuttX RTOS

Source: https://github.com/lupyuen/pinephone-nuttx-usb#decode-ehci-register-values

My very first loaf of bread 👍