Thank you very much for your help, hints and tips. If (6 = sscanf(receivedChars_Peer, "%x:%x:%x:%x:%x:%x%*c", Do you need to convert a MAC address to different formats Use the MAC Address Converter tool from, a leading cloud hosting provider. The device name will be listed in the same row as the MAC address. Locate the MAC address you want to convert in the table. take the mac address: for example 52:74:f2:b1:a8:7f throw ff:fe in the middle: 52:74:f2:ff:fe:b1:a8:7f reformat to IPv6 notation 5274:f2ff:feb1:a87f convert. This will display the ARP table for your network. Now I am trying to change the format and assign each MAC address to a variable/array as described above but how I don’t know how to achieve this? if (new_Peer_List_rcvd = (true)) To convert a MAC address to a device name using the ARP table, follow these steps: Open the command prompt on your computer. I am trying now to convert and assign the received string to variables respectively arrays.Įxamples for desired format required for ESP Now transmission:īroadcastAddress1 = Operating Systems Deploy instance with preferred OS. Control Panel Expand and manage your infrastructure. Advanced Network High speed public and private networking. The additional zeros between each byte may have been added during the Unicode.GetBytes call, which I don't think you'll need to use. Features Data Center Locations 23 server locations worldwide. ReceivedChars_Peer = '\0' // terminate the stringĪccording to the Serial Monitor the sting is received correctly in receivedChars_Peer. The output you got is very nearly your expected MAC address. While (Serial_BT.available() > 0 & newData_Peer = false) With this code I am receiving the string: void recPeerList() // Reveive MAC Address from APP The App sends a string (in variable lengths) with multiple MAC addresses (from none to a total of twelve MAC addresses).Įxample of a transmitted string with three MAC addresses: The App is connected using Bluetooth Classic to one ESP Now Sender Module. Convert each digit as shown below: 0 -> 0. List the MAC address as six bytes, each byte represented by two hexadecimal digits. Convert each digit as shown below: 0 -> 0, 8 -> 1. To do this, take the following steps: List the MAC address as six bytes, each byte represented by two hexadecimal digits. My basic question is how can I convert the units MAC address (from ESP.getEfuseMac() and/or WiFi.I am still a beginner and I have created an (MIT) Android App where I select/configure the ESP32 MAC addresses for my ESP NOW (one to many) broadcast network. List the MAC address as six bytes, each byte represented by two hexadecimal digits. I'm pretty sure that someone is going to say, "Why are you doing this? You shouldn't use a string." So here's my situation: String payloadMagicMirror = clientHTTPMagicMirror.getString() The code for sending the data is: int returnCodeMagicMirror = clientHTTPMagicMirror.POST( postAttributeFirmware + firmwareCode + postAttributeEfuseMac + efuseMac + postAttributeWiFiMac + wifiMac + postAttributeSensorID + sensorID + postEnd ) My Arduino (technically an ESP32) sends some json data to my MagicMirror using HTTP POST. I'm no expert, but I believe this is concatenating a bunch of string to form the post. Unless someone can suggest another workaround, I think I need efuseMac and wifiMac to be strings as well. What is clientHTTPMagicMirror? which library is being used? is there a way to post params independently? what is postAttributeFirmware, firmwareCode etc ? They are likely Strings indeed ut don't post snippets ( Snippets R Us!) I found one possible lead with this code ( MAC Address to String - #6 by beic - Programming Questions - Arduino Forum) but I don't understand it well enough to know how to adjust it to input ESP.getEfuseMac() and get out a string called efuseMac.Īny help or pointers in the right direction would be appreciated. I won't comment on the use of the String class, you know the pitfalls.
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