DLPC3478： questions about “ DLPC34XX_ReadRgbLedEnable” of DLPC-API-1.10

7563

Part Number: DLPC3478
Other Parts Discussed in Thread: DLPC-API

Hi, I found the following problems during testing:

1. "DLPC34XX_ReadRgbLedEnable" is called before the first "setInternalPatternControl" or "setOperatingModeSelect", the sample is run for the first time, the value read by "DLPC34XX_ReadRgbLedEnable" is normal (false, false, true), the sample is run again, The three values read are all false, which does not match the true value (false, false, true);

2. "DLPC34XX_ReadRgbLedEnable" is called after the first "setInternalPatternControl" or "setOperatingModeSelect". The value read by "DLPC34XX_ReadRgbLedEnable" is ( false, false, false), which does not match the true value (false, false, true);

3. The same phenomenon exists when I use DLP EVM GUI to test. Is there any restriction on calling "DLPC34XX_ReadRgbLedEnable"?

Thanks!

over 2 years ago

0 Lori Wang over 2 years ago

TI__Expert 7840 points

Hi user,

Welcome to the TI E2E forums and thanks for showing interest in the DLP technology.

We're looking into the issues you reported and will get back to you soon.

Thank you!

Regards,

Lori Wang

0 7563 over 2 years ago

Prodigy 50 points

Thank you very much! I am waiting for your reply.

0 Philippe Dollo over 2 years ago in reply to 7563

TI__Mastermind 28005 points

User,

Are you seeing incorrect behavior on the LED output, or just in the register readback?

Regards,

Philippe

0 7563 over 2 years ago in reply to Philippe Dollo

Prodigy 50 points

Hi，

I found out only when debugging the code, the return value of "DLPC34XX_ReadRgbLedEnable" is 0, but the three parameter values read are all false, in fact the third one should be true.

best,

0 Philippe Dollo over 2 years ago in reply to 7563

TI__Mastermind 28005 points

User,

So you mean to say that this issue does not actually reflect a problem in the LEDs themselves, and is only seen on the SW side. Is that right?

If so, you may want to try manually performing the I2C command associated with the RGB LED Enable. By doing this you can see if you are having issues with the DLPC-API.

If you have access to the I2C bus, you can also check the I2C commands being sent to determine if they are formatted properly.

Regards,

Philippe

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DLPC3478： questions about “ DLPC34XX_ReadRgbLedEnable” of DLPC-API-1.10