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CLI for interacting with Sensirion SCD30, the CO2, temperature, and humidity sensor.

License: MIT License

JavaScript 46.44% TypeScript 53.56%

scd30-cli's Introduction

scd30-cli

CLI for interacting with Sensirion SCD30, the CO2, temperature, and humidity sensor.

The CLI exposes all of the commands supported by the SCD30, as documented in the official Interface Description.

Uses scd30-node for communication with the SCD30.

Usage

yarn global add scd30-cli

$ scd30-cli start-continuous-measurement
Continuous measurement started.
Ambient pressure compensation deactivated.

$ scd30-cli read-measurement
╔═══════════════════╤══════════╗
║ CO2 concentration │ 1054 ppm ║
╟───────────────────┼──────────╢
║ Temperature       │ 24.15°C  ║
╟───────────────────┼──────────╢
║ Humidity          │ 31.86%   ║
╚═══════════════════╧══════════╝

Options

-b, --bus <number>
- The number of the I2C bus to open.
  0 for /dev/i2c-0, 1 for /dev/i2c-1, ...
  (default: 1)
-h, --help
- output usage information

Commands

Refer to official documentation for more details on commands.

read-measurement
status
is-data-ready
start-continuous-measurement
stop-continuous-measurement
set-measurement-interval
get-measurement-interval
start-asc
stop-asc
get-asc-status
set-frc-value
get-frc-value
set-temp-offset
get-temp-offset
set-altitude-compensation
get-altitude-compensation
get-firmware-version
soft-reset

`read-measurement`

Read a measurement of CO2 concentration, temperature, and humidity.

`status`

Queries for data ready status, ASC status, FRC value, temperature offset, altitude compensation,continuous measurement interval, and firmware version

`is-data-ready`

Determines if a measurement can be read from the sensor's buffer.

`start-continuous-measurement [pressure]`

Starts continuous measurement of CO2 concentration, temperature, and humidity.

pressure (optional)
- Ambient pressure to compensate CO2 measurements, 700–1400 mBar.
  Overrides altitude compensation.
  Setting to 0 deactivates ambient pressure compensation.
  To set new value, re-run start-continuous-measurement.

`stop-continuous-measurement`

Stops continuous measurement of CO2 concentration, temperature, and humidity.

`set-measurement-interval <interval>`

Sets the interval of continuous measurement.

interval
- Interval of 2–1800 seconds

`get-measurement-interval`

Returns the interval of continuous measurement.

`start-asc`

Starts the automatic self-calibration.

`stop-asc`

Stops the automatic self-calibration.

`get-asc-status`

Returns the status of automatic self-calibration.

`set-frc-value <co2ppm>`

Sets the reference CO2 concentration for forced re-calibration.

co2ppm
- Concentration of CO2, 400-2000 ppm

`get-frc-value`

Returns the reference CO2 concentration for forced re-calibration.

`set-temp-offset <offset>`

Sets the temperature offset.

offset
- Temperature offset in units of 0.01°C

`get-temp-offset`

Returns the temperature offset.

`set-altitude-compensation <altitude>`

Sets the altitude compensation value.

altitude
- Altitude in meters above sea level

`get-altitude-compensation`

Returns the altitude compensation value.

`get-firmware-version`

Returns the firmware version.

`soft-reset`

Performs a soft reset.

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scd30-cli's Issues

SCD30-CLI bus number option error (Invalid I2C bus number NaN)

I have 2 x SCD30 sensors on separate I2C busses due to not being able to change the sensors address (hardware set permanently at 0x61).
I have added 2 new busses at /dev/i2c-3 & /dev/i2c-4

 ~$ sudo i2cdetect -y -l
      i2c-3   i2c             3.i2c                                         I2C adapter
      i2c-1   i2c             bcm2835 (i2c@7e804000)       I2C adapter
      i2c-4   i2c             4.i2c                                         I2C adapter

They both return addresses successfully

pi@mypi:~$ sudo i2cdetect -y 3
     0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
00:          -- -- -- -- -- -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
60: -- 61 -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- -- -- -- -- --

pi@mypi:~$ sudo i2cdetect -y 4
     0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
00:          -- -- -- -- -- -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
60: -- 61 -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- -- -- -- -- --

However I can't connect to either of then via the scd30-cli to alter any configuration parameters as the command line bus number option always returns error as below:

pi@mypi:~$ scd30-cli -b 3 status
(node:1197) UnhandledPromiseRejectionWarning: Error: **Invalid I2C bus number NaN**
    at checkBusNumber (/usr/local/share/.config/yarn/global/node_modules/i2c-bus/i2c-bus.js:61:11)
    at open (/usr/local/share/.config/yarn/global/node_modules/i2c-bus/i2c-bus.js:35:3)
    at /usr/local/share/.config/yarn/global/node_modules/i2c-bus/i2c-bus.js:53:17
    at new Promise (<anonymous>)
    at Object.openPromisified (/usr/local/share/.config/yarn/global/node_modules/i2c-bus/i2c-bus.js:51:49)
    at /usr/local/share/.config/yarn/global/node_modules/scd30-node/dist/index.js:227:33
    at Generator.next (<anonymous>)
    at /usr/local/share/.config/yarn/global/node_modules/scd30-node/dist/index.js:8:71
    at new Promise (<anonymous>)
    at __awaiter (/usr/local/share/.config/yarn/global/node_modules/scd30-node/dist/index.js:4:12)
(node:1197) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 2)
(node:1197) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

Same error for bus number 4

Is this a bug or am I providing the bus number in the wrong format?

rsmeral / scd30-cli Goto Github PK

scd30-cli's Introduction

scd30-cli

Usage

Options

Commands

read-measurement

status

is-data-ready

start-continuous-measurement [pressure]

stop-continuous-measurement

set-measurement-interval <interval>

get-measurement-interval

start-asc

stop-asc

get-asc-status

set-frc-value <co2ppm>

get-frc-value

set-temp-offset <offset>

get-temp-offset

set-altitude-compensation <altitude>

get-altitude-compensation

get-firmware-version

soft-reset