relayEquipmentManager
relayEquipmentManager copied to clipboard
rstrouse
Reading raw analog sensors on BeagleBone Black.
I've got a BeagleBone Black, with a very nice breakout cape.
Connected to it, is a 10K NTC thermistor in a voltage divider configuration.
I'm not seeing a way in the UI to configure the onboard ADCs to actually read the temperature.
Is that configured in the json directly?
Is this an MCP cape on SPI?
No. Its directly attached to the ADC GPIO pins (specifically P9.36)
Yeah we are not reading any of those ADC pins. I looked at those originally and the but I don't have a Beagle. They bark too much. I2c is supported as well as SPI.
Ah. I see. Would that be terribly difficult to implement? I can hack away a little at it myself, but no one knows their code like the author.
I’d be glad to test implantations as they’re developed.
On Fri, Jun 11, 2021 at 8:18 PM rstrouse @.***> wrote:
Yeah we are not reading any of those ADC pins. I looked at those originally and the but I don't have a Beagle. They bark too much. I2c is supported as well as SPI.
— You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub https://github.com/rstrouse/relayEquipmentManager/issues/12#issuecomment-859966748, or unsubscribe https://github.com/notifications/unsubscribe-auth/AABN74NG6QYFI7U5WIDNUL3TSKRVTANCNFSM46RDHJXQ .
-- No trees were harmed in the sending of this message, but a rather large number of electrons were terribly inconvenienced.
I would bet that it is file system based so it probably has a file that it writes in devices somewhere. Maybe sysfs.
It definitely does have some sysfs interfaces. And yes. They have some power limits, but there are several examples of measuring a 10k notch thermistor without issue. Other devices may require some additional circuitry.
On Fri, Jun 11, 2021 at 11:34 PM rstrouse @.***> wrote:
You do know those pins have some power limits.
— You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub https://github.com/rstrouse/relayEquipmentManager/issues/12#issuecomment-859991067, or unsubscribe https://github.com/notifications/unsubscribe-auth/AABN74LF2F4KLDC4FBIGTDDTSLIV5ANCNFSM46RDHJXQ .
-- No trees were harmed in the sending of this message, but a rather large number of electrons were terribly inconvenienced.