GPIO Modification

[reda_ais]

Hello,

I’m trying to install OpenSprinkler firmware on GreenIQ hardware (It consists of a RPi 1 A and a relay board connecting to the valves). I detected, by using WiringPi gpio tool, the valves corresponding to each GPIO.

My problem is that OpenSprinkler Firmware uses some of them (4,17,21,22) for latch,data,clock,output_enable. Is there a possibility to use them for GPIO OUT? If so how? and what would I lose ?

Thanks for your help,

[Anonymous]

I would also be grateful for a modified firmware for the same reason.
I came across this modified firmware: https://github.com/hugheaves/OpenSprinklerGen2
However, it is based on a very old version.
Could someone help update it and integrate and sync it with the latest official version?

[bubu77]

Hello,

I’m very interested too in that solution (OPENSPRINKLER on old GREENIQ).
Any one to modify the firmware?
Another solution is to put a cable between the pi and the relay mother board and changing the connections… but I’m not sure it will fit inside the greenIQ box

[marekp]

Hi,

This https://github.com/Dan-in-CA/SIP works on GreenIQ v2. You need use Relay plugin and modify gpio config in plugin code (python). But weather support doesn’t work.
Now I try to modify Opensprinkler Unified Firmware, but without success till now. I can’t modify gpio config, so all is working, but I can’t control the sections.

[Ray]

I don’t have a GreenIQ so can’t test. But if you want to get the unified firmware to compile and run on it, I think you just need to modify the pin definitions:
https://github.com/OpenSprinkler/OpenSprinkler-Firmware/blob/master/defines.h#L448
to pins that are not used by GreenIQ. I don’t know if there is a circuit schematic of GreenIQ (or at least a document about what pins it uses). If you change the firmware’s pin definitions to dummy/unused pins, the firmware should compile and run just fine, and then you can use the GPIO zone feature to define a zone attached to a GPIO pin.

[Anonymous]

In GreenIQ v2 the GPIO mapping is as follows:
[Irrigation channel – CPU pin – 26 pin header pin]
CH1 – GPIO4 – pin 7
CH2 – GPIO17 – pin 11
CH3 – GPIO18 – pin 12
CH4 – GPIO27 – pin 13
CH5 – GPIO22 – pin 15
CH6 – GPIO23 – pin 16
CH7 – GPIO24 – pin 18
Light – GPIO25 – pin 22
Rain Sensor – GPIO15 – pin 10
Network LED (active ‘1’) – GPIO7 – pin 26

Irrigation channels are simple “opto relay”s that pass the 24VAC to the output, similar to the OSPi board but skipping the SPI GPIO expander, direct control.

[thomas_n]

Did you ever get this resolved? I am trying to use IonoPi and this also requires a change to the pin assignments. I have changed the relevant entries in definitions.h, but the available pins have not changed in the frontend at all…

Thomas

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