Arduino library to control Mitsubishi Heat Pumps via connector CN105.
HeatPump hp;
hp.connect(&Serial);
heatpumpSettings settings = {
"ON", /* ON/OFF */
"FAN", /* HEAT/COOL/FAN/DRY/AUTO */
26, /* Between 16 and 31 */
"4", /* Fan speed: 1-4, AUTO, or QUIET */
"3", /* Air direction (vertical): 1-5, SWING, or AUTO */
"|" /* Air direction (horizontal): <<, <, |, >, >>, <>, or SWING */
};
hp.setSettings(settings);
// OR individual settings
// hp.setModeSetting("COOL");
hp.update();
You can make the library automatically send new settings to the heat pump by calling enableAutoUpdate()
. When auto update is enabled the call to update()
in the above example is not necessary, the new settings will be sent to the heat pump on the next call to sync()
in loop()
.
void setup() {
HeatPump hp;
hp.connect(&Serial);
}
void loop() {
hp.sync();
/* get settings from heatpump, including room temperature in settings.roomTemperature */
heatpumpSettings settings = hp.getSettings();
}
By default the library ignores changes made from other sources (usually, the IR remote) and reverts them the next time sync()
is called. This is the intendend behavior when the heat pump is fully controlled by automation.
If you want to also allow manual control and allow the library to update its settings from the current state of the heat pump you need to call enableExternalUpdate()
. This will also enable automatic updates.
Instead of manually checking settings changes on each loop, you can set callback functions to be called when the current heat pump status or settings change:
void hpSettingsChanged() {
// ...
}
void hpStatusChanged(heatpumpStatus currentStatus) {
// ...
}
void setup() {
hp.setSettingsChangedCallback(hpSettingsChanged);
hp.setStatusChangedCallback(hpStatusChanged);
hp.connect(&Serial);
}
The callbacks will be called as necessary by the sync()
method.
You can see this in use in the MQTT example.
... to Hadley in New Zealand. His blog post, describing baud rate and details of cn105, Raspberry Pi Python code:
https://nicegear.co.nz/blog/hacking-a-mitsubishi-heat-pump-air-conditioner/
Licensed under the GNU Lesser General Public License. https://www.gnu.org/licenses/lgpl.html