Closed AllenCyborg closed 4 months ago
Leds seem to turn on when LOW and off when HIGH
It's true, but the reason is not that the levels in the digitalWrite() are mixed up. The built-in leds on W801 & W806 boards are connected between VCC and mcu pin, so they controlled by LOW level. GPIO LOW - LED ON GPIO HIGH - LED off In contrast, on the air103 board with the same controller, the LEDs are connected between pin and GND and are switched ON by HIGH level.
I added W801 schematic to the doc folder: doc/W801-KIT-V1.0-schematic.pdf
The built-in leds on W801 & W806 boards are connected between VCC and mcu pin, so they controlled by LOW level. GPIO LOW - LED ON
Thanks, that makes a lot of sense...
I was trying to run a modified blink sketch to make a pattern on the w801 board. I first tried setting all seven leds
HIGH
and didn't bother setting them low; so only led1 was gettingLOW
. I noticed that only LED1 was turning on, then I tried setting other LEDs low one by one.They seem to turn on when
LOW
and off whenHIGH
.