Little bear sect manual query and ADC in-depth study

Development board function introduction

BearPi-HM Nano The development board is specially designed for Hongmeng OS Design HarmonyOS Development board , On board height set
Yes 2.4GHz WLAN SoC chip Hi3861, Parallel onboard NFC Circuit and standard E53 Interface , The standard E53 Pick up
Expandable smart home 、 Smart desk lamp 、 Intelligent security 、 Intelligent smoke detector and other cases .

Schematic diagram of key circuit
BearPi-HM Nano The development board provides a reset button and two user buttons , In the schematic diagram SW1 Corresponding to the reset button ,SW2 and SW3 They correspond to each other F1 and F2 Key .

LED Schematic diagram of lamp circuit
BearPi-HM Nano The development board provides a user controllable LED The lamp , It can be used for GPIO Output 、PWM Output and other experiments .

E53 Interface electrical standards

test ADC0 and ADC2 Use

The interface is introduced


code

ADC0 Hardware measurement

ADC2 Hardware measurement