About IAhma.1

IAhma.1 · 2021-11-06

I am sending some data on UART, When I enable Transmitter TE bit in USART_CR1 register, a pulse is observed on Tx line ( as shown in figure). That's fine but I am observing some 190nsec pulses on Rx lines though I am not sending anything to it! I hav...

IAhma.1 · 2021-08-05

Hi,I am looking for an STM based MCU/kit with high accuracy crystal oscillator with possible option to fine tune the frequency. I want to use it for some high accuracy time reference. Looking for suggestion please.- ijaz

IAhma.1 · 2021-11-06

Thank you so much @TDK ..:grinning_face: I wish there was button to mark your reply as accepted answer.

IAhma.1 · 2021-11-06

Thanks for you kind response... Just wanna know one thing...If we disable Tx / Rx (not complete UART), will it save any power?

IAhma.1 · 2021-11-06

Yes, You are probably right. I reduced jump wires and unexpected pulses are gone. thanks you. Just needs further information on: UART is typically idle high. Is yours intentionally idle low?

IAhma.1 · 2021-11-06

I have simply connected Rx/Tx lines to saleae logic analyzer via jumper wires. Nothing else. UART is typically idle high. Is yours intentionally idle low? => I don't know what is means and how to make lines low. Please guide me on this as well.

IAhma.1 · 2021-08-05

Any other nearby solution other than GPS option? For removing that extra dependency on GPS signals!!!What you think what will be the maximum drift in frequency (or in term of time /24hrz) of STM32-Discovery kit under controlled temperature of 22-28de...

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