Zigbee: Writing hex string with "he wattr"

🚧 Developers Coding Questions
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For anyone stumbling onto this topic looking for a simple way of doing this before it's built-in, here is a method that can be used to write Long attributes:

ArrayList zigbeeWriteLongAttribute(Integer cluster, Integer attributeId, Integer dataType, Long value, Map additionalParams = [:], int delay = 2000) {
    String mfgCode = ""
    if(additionalParams.containsKey("mfgCode")) {
        mfgCode = " {${HexUtils.integerToHexString(HexUtils.hexStringToInt(additionalParams.get("mfgCode")), 2)}}"
    }
    String wattrArgs = "0x${device.deviceNetworkId} 0x01 0x${HexUtils.integerToHexString(cluster, 2)} " + 
                       "0x${HexUtils.integerToHexString(attributeId, 2)} " + 
                       "0x${HexUtils.integerToHexString(dataType, 1)} " + 
                       "{${Long.toHexString(value)}}" + 
                       "$mfgCode"
    ArrayList cmdList = ["he wattr $wattrArgs", "delay $delay"]
    return cmdList
}
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