[Development Tutorial 9] crazy shell · open source Bluetooth smart health watch - storage

Storage
—— Crazy shell · “ Blood pressure / Blood oxygen / heart rate / ECG ” Four in one health smart watch series

  The storage particles on the watch are Huabang SPI FLASH W25C20CL, The operation is very simple , It only needs 4 Line SPI Can be real Storage, reading and writing of current data .

1.1 Hardware circuit

  Pictured 1.0 Shown is the schematic diagram of the hardware circuit of the touch part of the watch .

 

chart 1

1.2 Software code

  Open the code of the watch font library , Pictured 1.1 Shown .

 

chart 2

  Pictured 1.2 As shown in the for SPI The initialization

 

chart 3

1.3 Experimental phenomena  

  Compile the code into debug mode , Make a breakpoint at the end of the code , The program will eventually stop at the end , It means that the font library is burned Into the flash complete , Pictured 1.3 Shown .

 

chart 4

  After the font library is burned in ,TFT The screen can be painted with pictures and letters , Pictured 1.4 Shown .

 

chart 5

 

More complete learning materials and corresponding open source Suites , Please visit the official website :“ Crazy shell ”