[time-nuts] What's available in the way of DSP for new WWVB?

[jimlux]

On 10/16/20 1:54 PM, jimlux wrote:
> On 10/16/20 9:08 AM, Graham / KE9H wrote:
>> On Tue, Oct 13, 2020 at 12:19 PM paul swed <paulswedb at gmail.com> wrote:
>>
>>> Graham take a look earlier in the thread there are details about the
>>> teensy. There is actually a lot of hardware out there today for little
>>> money. Thats what makes the SDR DSP approach interesting and for me at
>>> least the next thing to take a run at.
>>> Regards
>>> Paul
>>> WB8TSL
>>>
>>>
>>> Hi Paul:
>>
>> I have looked at the Teensy 4.0 for use as a WWVB SDR receiver.
>>
>> The problems I have are:
>>
>> 1.) PJRC (the designer/manufacturer) has gone out of their way to block
>> access to the standard ARM SWD programming interface, and you must go
>> through the unique USB loader executable and programming interface if you
>> want to program the board. It is awkward to use a normal development
>> environment such as NXP's MCUXpresso with a standard programming 
>> interface.
>> It is really intended for use with the provided Arduino programming
>> environment.
> 
> I'm not so sure about that. There's quite a few folks using ARM 
> toolchains and not using the USB loader.   For that matter, if you can 
> generate an executable, in any fashion, you can use their loader.
> 
> I've done it with a 3.2, but not the 4.0, so maybe there's a hiccup.. 
> But usually, the support forum has a wealth of information.
> 
> 
> 


Or TyQT, which is what I use a lot with Teensy boards - it will reflash 
it, reboot, etc.   Yeah, you don't get a debugger - you have to toggle 
pins and use a scope, or printf()

googling Teensy 4.0 ARM SWD might turn up useful stuff.