pico-i2c.md

date_updated	layout	title	dependancies	dev_board	components	chips	firmware	feature	images	prerequisites	references	code	source_code_path
2022-11-02	tutorials	I2C Bus Scan with RPi pico	name url Pico toolchain https://datasheets.raspberrypi.org/pico/getting-started-with-pico.pdf	RaspberryPI Pico	name url Raspberry PI Pico https://amzn.to/3sKa5Cv	RP2040 Si7021 VCNL4000	C C++	I2C	console prototype schematic pico-i2c-console.png pico-i2c-prototype.jpg pico-i2c-schematic.png	name url Blinky Pico ./blinky-pico	name url Pico I2C Bus Scan example code https://github.com/raspberrypi/pico-examples/blob/master/i2c/bus_scan/bus_scan.c name url Adafruit Si7021 Temperature / Humidity sensor Dev Board https://learn.adafruit.com/adafruit-si7021-temperature-plus-humidity-sensor name url Si70721 Temperature / Humidity datasheet https://www.silabs.com/documents/public/data-sheets/Si7021-A20.pdf name url Adafruit VCNL4000 proximity sensor dev board https://www.adafruit.com/product/466 name url VCNL4000 datasheet https://cdn.sparkfun.com/datasheets/BreakoutBoards/vcnl4000.pdf	c	pico-i2c.c

This example code does an I2C Bus Scan for the sensors Si7021 and VCNL4000.

The datasheets of the 2 sensors below show that the serial monitor prints are in line with the information in the datasheet.

The I2C address for Si7021 is 0x40. 

The I2C address for VCNL4000 is 0x13.