LEDs tile

martinayotte · 2015-09-17T00:42:38.000Z

D1 to D6 are in source mode with common to GND while D7 to D9 are in sink mode with common to 3.3V.

Is there any reason why all the LEDs are not connected the same way on the LEDs tile ?

martinayotte · 2015-09-19T09:54:59.000Z

No news about this design discrepancy ?

alex_zheng · 2015-09-19T12:20:45.000Z

LED0, LED1, LED2, LED3, LED4, LED5 are also for Boot-strap during power on.
To avoid wrong voltage applyed on the IO pin from LED,these GPIOs should be source current only.
The rest LEDs are using sink current mode to reduce the Hornet internal 2.5V LDO loading (thermal).

martinayotte · 2015-09-20T02:19:56.000Z

Thanks !
That sounds logic …