RE: supporting tickless and non-tickless using arch_timer/alarm/rtc

2020-09-02 Thread Xiang Xiao
> -Original Message- > From: Matias N. > Sent: Thursday, September 3, 2020 6:31 AM > To: dev@nuttx.apache.org > Subject: supporting tickless and non-tickless using arch_timer/alarm/rtc > > Hi, > I'm looking into implementing tickless on nRF52 (first using systick, since > it is an easy o

Re: NuttX SDXC / exFAT support

2020-09-02 Thread Adam Feuer
This is an MIT-licensed exFAT implementation for Arduinos. Maybe it can be adapted? https://github.com/greiman/SdFat-beta -adam On Wed, Sep 2, 2020 at 9:53 PM Pelle Windestam < pelle.windes...@tagmaster.com> wrote: > > > > Hi everyone, > > > > > > Is there any support for high capacity SD-cards

RE: NuttX SDXC / exFAT support

2020-09-02 Thread Pelle Windestam
> > Hi everyone, > > > > Is there any support for high capacity SD-cards in NuttX, i.e. larger > > than 32GB? I have done some research online and it seems that for > > those sizes, SDXC cards using the exFAT file system is required. I > > have looked through the code and cannot find anything indi

max sleep and tickless with no alarm

2020-09-02 Thread Matias N.
Hi, question related to other e-mail. Looking at how tickless is handled when SCHED_TICKLESS_ALARM is not defined it seems strange that not specifying maximum is even possible as it cannot be expected that up_timer_start() will succeed for arbitrarily long timeouts. In fact, up_timer_start() may

interesting lora modules

2020-09-02 Thread Matias N.
I was just reading this article: https://www.hackster.io/news/keep-a-track-on-the-passage-of-time-with-this-rak4260-powered-wrist-worn-lora-communicator-watch-5c8299a8307d And looked more into this RAK manufacturer to see the LoRa modules they offer. There are some very interesting ones: https:

supporting tickless and non-tickless using arch_timer/alarm/rtc

2020-09-02 Thread Matias N.
Hi, I'm looking into implementing tickless on nRF52 (first using systick, since it is an easy option, and then using a RTC timer, which works while CPU is asleep). My intention is to use the arch timer driver for this (drivers/timer/arch_timer.c) since it provides up_mdelay without using a busy

Re: NuttX SDXC / exFAT support

2020-09-02 Thread Alan Carvalho de Assis
Hi Pelle, On 9/2/20, Pelle Windestam wrote: > Hi everyone, > > Is there any support for high capacity SD-cards in NuttX, i.e. larger than > 32GB? I have done some research online and it seems that for those sizes, > SDXC cards using the exFAT file system is required. I have looked through > the c

NuttX SDXC / exFAT support

2020-09-02 Thread Pelle Windestam
Hi everyone, Is there any support for high capacity SD-cards in NuttX, i.e. larger than 32GB? I have done some research online and it seems that for those sizes, SDXC cards using the exFAT file system is required. I have looked through the code and cannot find anything indicating support for ei