2.1.4 LEDs
1.
AVR_ON
This
Red
colored LED indicates that the AVR chip ATmega2560 is powered ON.
2.
ESP_ON
This
Red
colored LED indicates that the ESP32 chip is powered ON.
3.
RGB LED
This is a tri-color user LED. It is a
Common Anode
type LED which is connected
to ATmega2560 as follows:
(a)
Red
terminal is connected to
OC4A / PH3
.
(b)
Green
terminal is connected to
OC4C / PH5
.
(c)
Blue
terminal is connected to
OC4B / PH4
.
4.
Wi-Fi Status LED
This
Blue
colored LED indicates whether any device is connected to the ESP32’s
Wi-Fi
access point. Once a device is connected, this LED glows. It is connected to
ESP32
GPIO18
pin.
When you are connected to your
eYFi-Mega
over a Wi-Fi link, it is important to
know the different states in which your board is. These states are indicated by this
LED. Below is the description of different LED patterns associated with different
states of the board.
Table 4: Patterns of Wi-Fi status LED with various states of the board
State
Wi-Fi Status LED Pattern
Wi-Fi client is connected to ESP32
ON
Wi-Fi client disconnected from ESP32
OFF
File Upload Start
OFF
File Upload End
Blink Fast for 100 ms
Firmware Flash Start
Blink Fast
Firmware Flash End - AVR
Blink Slow for 5 sec
Firmware Flash End - ESP32
Blink Slow till S1 switch is toggled
5.
TX LED and RX LED
•
TX LED
: This green colored LED indicates whether ATmega2560 or ESP32 is
transmitting any information to the PC via wired connection.
•
RX LED
: This green colored LED indicates whether ATmega2560 or ESP32 is
receiving any information to the PC via wired connection.
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