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use std::fstream for SDCARD

Hi I'm trying to reuse some code that uses use std::fstream for file access.I have the FATFS working and can read and write files. like this:fr = f_open(&fil, path, FA_WRITE | FA_CREATE_ALWAYS);if (fr == FR_OK) {// Write text to the filefr = f_write(...

Kvang by Associate III
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  • 1 replies
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Component identification

Hello everyone, I have problem with IC identification. Marking is D300I , 90A819. Pls let me know what kind of IC it is.Vcc pin i the 1st pin, and GND is 8th pin, that's all I know.  

Zrzut ekranu 2024-09-11 094622.png
Semator by Associate
  • 588 Views
  • 5 replies
  • 3 kudos

STUW81300 STWPLLSim

 Hello.I want to use STUW81300 to create 9 GHz with great phase noise.Reference: 50 MHzPDF:50MHzSingle-EndedSTWPLSim v5.3 was used for the loop filter design.However, the actual measurements were 3~7dB worse than the simulated values.All settings see...

hccho by Associate
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  • 0 replies
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Resolved! Cannot update firmware on new NanoVNA-H4

Hello,My new NanoVNA-H4 arrived today.  I immediately set out to update its firmware to the latest version (v1.2.29) but have been unable to get the DFuSe_Demo_V3.0.6 bootloader to "Choose" the DFU file (NanoVNA.H4.v1.2.29).  I get a "This file doesn...

JS2OLO by Associate II
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  • 1 replies
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Resolved! SD1731-11

Does anyone here have a datasheet for part# SD1731-11? I see on website only datasheet SD1731 and SD1731-14. Does anyone know what the "dash #" stands for?

BXion.1 by Associate II
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  • 1 replies
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Resolved! STM32 Flash loader demonstrator (UM0462)

I am currently working on downloading an image into the LT-22222-L using the STM32 Flash Loader. While the download completes successfully and runs as expected, I am encountering significant issues with the application. It frequently crashes, and on ...

Screenshot 2024-09-03 163553.png Screenshot 2024-09-03 163458.png Screenshot 2024-09-03 163453.png