pyupm_hka5 module

class pyupm_hka5.HKA5(uart, set_pin, reset_pin)

Bases: object

API for theDFRobot Laser PM2.5 Sensor.

ID: hka5

Name: Laser Particulate Matter (PM) Sensor

Category: gaseous

Manufacturer: dfrobot

Connection: uart gpio

Link:https://www.dfrobot.com/wiki/index.php/DFRobot_LM35_Linear_Temperature_Sensor_(SKU:DFR0023) This driver was tested with a DFRobot Laser PM2.5 Sensor. It connects to a UART at 9600 baud. This is the only baud rate supported. It optionally supports Reset and Set/Sleep gpios as well.

C++ includes: hka5.hpp

enable(enable)

void enable(bool enable)

Enable or disable the device. When disabled, the device enters a low power mode and does not emit data. You must have initialized and connected the Set pin for this function to work.

enable: true to enable the device, false otherwise.

getPM1()

unsigned int getPM1()

Return the last read PM 1.0 value. The value is in micrograms per cubic meter (ug/m3). You must have called the update() function before calling this function.

The value in ug/m3

getPM10()

unsigned int getPM10()

Return the last read PM 10.0 value. The value is in micrograms per cubic meter (ug/m3). You must have called the update() function before calling this function.

The value in ug/m3

getPM2_5()

unsigned int getPM2_5()

Return the last read PM 2.5 value. The value is in micrograms per cubic meter (ug/m3). You must have called the update() function before calling this function.

The value in ug/m3

reset()

void reset()

Reset the device. You must have initialized and connected the Reset pin for this function to work.

update()

void update()

Query the device and store the latest values. You must call this function before calling any of the get*() functions.