Hi Tim,
if you use the ESP32 without the PSRAM, for example the ESP32-WROOM,
then you have CLOCKIN (GPIO_0) and CLOCLOUT/CLOCKOUT180 available. When
you use the ESP32 with PSRAM, as on the WROVER modules, the
CLOCLOUT/CLOCKOUT180 are occupied by the PSRAM and not available.
The CLOCKIN
Hi Tim,
Probably you saw that you will need to use some external clock.
You can try to use the ESP32 generated clock CLOCKOUT (ideally you can
add a 0R option option to use CLOCKOUT180 instead) and connect it to
GTXCK.
Case it doesn't work you will need an external 50MHz oscillator.
BR,
Alan
I meant esp32 not esr32. The naming is too similar lol
> On 29 Oct 2022, at 15:51, Tim Hardisty wrote:
>
> Thanks Alan! SAMA5D2 has RMII so definitely a possibility. EFR32 is a much
> better value device compared to SiLabs Bluetooth 5 module currently used, and
> has WiFi as a bonus - so I
Thanks Alan! SAMA5D2 has RMII so definitely a possibility. EFR32 is a much
better value device compared to SiLabs Bluetooth 5 module currently used, and
has WiFi as a bonus - so I will investigate it's IDE and see how easy it is to
implement a GATT-based solution, or to load HCI firmware so I
More info here:
https://e2e.ti.com/support/processors-group/processors/f/processors-forum/366759/am335x-rmii-direct-connection-between-two-devices
Same TI guy who said it was impossible latter talk internally and
discovered that there was a customer already using it.
BTW, you will need to have
Hi Tim,
I just searched if it was possible to connect two Ethernet MAC
directly without using PHY and it is possible, so it will not involve
cost for you:
https://stackoverflow.com/questions/39503466/can-two-ethernet-mac-chips-be-connected-directly-without-going-thru-phy
BR,
Alan
On 10/29/22,
Thanks for your clarifications Alan - I have messaged Espressif (your reply
ended up in SPAM otherwise I might not have needed to) so I guess I'll get a
similar answer.
There is HCI (RCP) firmware for the SiLabs module so I can try that - it's the
£7 per module saving of Espressif vs. SiLabs,
Due to processor power limitations? For this application a WiFi interface would
be rarely used apart from a means to configure the product. Bluetooth will be
GATT based to allow monitoring of sensor data on a phone app (sometime in the
fure, due to the Bluetooth SIG fees involved!!).
So if the
I tried some Wifi and Bluetooth but know that some MCUs cannot handle them
very well at the same time.
Op za 29 okt. 2022 1:20 a.m. schreef Alan C. Assis :
> Hi Tim,
>
> On 10/28/22, Tim Hardisty wrote:
> > Bit of a tangential question this, but I know there are folk on here who
> > are much
Hi Tim,
On 10/28/22, Tim Hardisty wrote:
> Bit of a tangential question this, but I know there are folk on here who
> are much more conversant with the way NuttX can be used with WiFi and
> Bluetooth modules than I am.
>
I think these are important questions and other people could face
similar
Bit of a tangential question this, but I know there are folk on here who are
much more conversant with the way NuttX can be used with WiFi and Bluetooth
modules than I am.
I may have an opportunity forced on me to have to respin my custom board which
currently has a SiLabs Bluetooth SoC as
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