ESP-NOW Mac Address compile error

[chuck808]

Hello,

Trying to run the samples from https://randomnerdtutorials.com/esp-now ... duino-ide/ Getting Started with ESP-NOW (ESP32 with Arduino IDE), but keep running into compile error. The board I am using is the ESP-WROON-32 dev board.

If I run the sketches with

Code: Untitled.cpp Select all

// REPLACE WITH YOUR RECEIVER MAC Address

uint8_t broadcastAddress[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};

, everything runs as expected.

However, if I replace the broadcast address with the Mac Address of the receiver

Code: Untitled.cpp Select all

// REPLACE WITH YOUR RECEIVER MAC Address

uint8_t broadcastAddress[] = {AC:67:B2:26:5D:78};

, I get the following error message.

Code: Untitled.txt Select all

Arduino: 1.8.13 (Windows 10), 

Board: "ESP32 Dev Module, 

Disabled, 

Default 4MB with spiffs (1.2MB APP/1.5MB SPIFFS), 

240MHz (WiFi/BT), 

QIO, 80MHz, 

4MB (32Mb), 

921600, 

None"



sketch_feb14a:16:36: error: expected '}' before ':' token



 uint8_t broadcastAddress[] = {AC:67:B2:26:5D:78};                               ^



sketch_feb14a:16:36: error: name 'AC' used in a GNU-style designated initializer for an array



sketch_feb14a:16:36: error: expected ',' or ';' before ':' token



sketch_feb14a:16:48: error: expected declaration before '}' token



 uint8_t broadcastAddress[] = {AC:67:B2:26:5D:78};                                            ^



Multiple libraries were found for "WiFi.h"



 Used: C:\Users\name\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.4\libraries\WiFi



 Not used: C:\Program Files (x86)\Arduino\libraries\WiFi



exit status 1



expected '}' before ':' token

I have read some posts that suggest removing one of the instances of "WiFI.h", but that doesn't fix the issue.

Any suggestions?

Thanks

[ChrisMCU]

Code: Untitled.cpp Select all

uint8_t broadcastAddress[] = {AC:67:B2:26:5D:78};

should be:

Code: Untitled.cpp Select all

uint8_t broadcastAddress[] = {0xAC, 0x67, 0xB2, 0x26, 0x5D, 0x78};

[lbernstone]

"AC" is a string. 0xAC is a uint8_t.

[chuck808]

Hello lbernstone,



What an idiot I am.

Thanks