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@ -221,6 +221,9 @@ ManagedString MicroBit::getName()
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*/
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ManagedString MicroBit::getSerial()
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{
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if (serialCache.length() > 0)
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return serialCache;
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// We take to 16 bit numbers here, as we want the full range of ID bits, but don't want negative numbers...
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int n1 = NRF_FICR->DEVICEID[1] & 0xffff;
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int n2 = (NRF_FICR->DEVICEID[1] >> 16) & 0xffff;
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@ -229,7 +232,9 @@ ManagedString MicroBit::getSerial()
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ManagedString s1 = ManagedString(n1);
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ManagedString s2 = ManagedString(n2);
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return s1+s2;
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serialCache = s1 + s2;
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return serialCache;
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}
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/**
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