DLP4710: Is there any way to know if the system has been started using a momentary push switch via i2c?

Hello Yun,

Thanks for using the DLP forums! You can check the status of the EVM on the GUI information page, or try issuing commands to the controller and check response. Or were you looking for a signal to measure?

Best,

~Danny White

Hi Danny,

Thanks for the message. So if I get no response from the EVM when I query like LED current, does it mean that the system is off?

Thanks.
Yun

Hello Danny,

Unfortunately, even if the EVM is turned off, it responses to I2C query with a last active value. I tried to check RGB LED Enable (53h) after turning off the EVM, it still responds with the last value. How does GUI know if the EVM is on or off? GUI clearly says it's turned off or active, so there should be a way to detect this.

Best,
Yun