nRF51822-QFAA is an old-generation popular chip of NORDIC, and everyone is very familiar with it. This chip has established NORDIC's leading position in the field of Bluetooth 4.2. It has a wide range
The previous evaluation verified the IDF case sd_spi, and the Kaluga board can be connected to an external SPI port TF module to implement file operations. This article continues to improve the case t
[i=s]This post was last edited by hujj on 2021-1-21 14:08[/i]When testing serial communication, I wrote the following code in the main loop and set the number of characters to be received as large as
In C language, a variable is defined and assigned a value in one file, and then declared and referenced in another file, and the value becomes 0 at this time.