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Esp8266 uses TF card and reads and writes data (based on Arduino)
2022-07-07 09:30:00 【Allen953】
Introduce
The following modules are mainly used , One
TF Memory card pin
This picture mainly tells us TF What is the function of each pin of the card , Because we use spi Interface , So just look at the last column .
Run routine
Under normal circumstances , Once your arduino IDE It's equipped with esp8266 Hardware support for , Then the adapter will be automatically installed esp8266 Of SD Kaku , So we don't need to install the Library .
We turn on files This routine , Then compile .
This files What are routines mainly for ?
Is to create one on the memory card example.txt The file of , And then delete .
connection
After compiling it , Let's start wiring
If you directly run the routines compiled above , Without making any changes to the program , Then it's OK to connect like this .
After connecting the line , You can directly power on the board , Then open the serial port from , Check whether the printed log is normal .
You can see , Memory card initialization succeeded , And successfully created the file on it , Then deleted the file .
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