ST
Utility library to read and write Ndef messages from/to a Type4 NFC tag
Dependents: NFC M2M_2016_STM32 MyongjiElec_capstone1 IDW01M1_Cloud_IBM ... more
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NDefLib
by 
ST Expansion SW Team
NDEF NFC library
This library provides an abstract API to create NDEF formatted messages and records and to read/write them from/to a Type4 NFC Tag.
Implementations
At the moment, the NDEF API is implemented by X_NUCLEO_NFC01A1 and X_NUCLEO_NFC02A1 Dynamic NFC Tag libraries respectively driving the X-NUCLEO-NFC01A1 and X-NUCLEO-NFC02A1 boards.
Diff: RecordHeader.h
- Revision:
- 7:1ebd6049fa57
- Parent:
- 6:739e3211749d
- Child:
- 8:473f6e0b03df
--- a/RecordHeader.h Thu Dec 03 14:56:01 2015 +0000
+++ b/RecordHeader.h Thu Dec 10 14:58:43 2015 +0000
@@ -66,7 +66,8 @@
RecordHeader() :
- headerFlags(0), typeLength(0), playloadLength(0) {
+ headerFlags(0), typeLength(0), payloadLength(0) {
+ setSR(true);
}
/**
@@ -77,7 +78,7 @@
if (value)
headerFlags |= 0x80;
else
- headerFlags &= 0x7F;
+ headerFlags &= ~0x80;
}//setMB
/**
@@ -96,7 +97,7 @@
if (value)
headerFlags |= 0x40;
else
- headerFlags &= 0xBF;
+ headerFlags &= ~0x40;
}//setME
/**
@@ -116,7 +117,7 @@
if (value)
headerFlags |= 0x20;
else
- headerFlags &= 0xDF;
+ headerFlags &= ~0x20;
}//getCF
/**
@@ -136,7 +137,7 @@
if (value)
headerFlags |= 0x10;
else
- headerFlags &= 0xCF;
+ headerFlags &= ~0x10;
}//setSR
/**
@@ -155,7 +156,7 @@
if (value)
headerFlags |= 0x08;
else
- headerFlags &= 0xAF;
+ headerFlags &= ~0x08;
}//setIL
/**
@@ -186,21 +187,21 @@
}
/**
- * set the record playload length
+ * set the record payload length
* @par this function will update the SR field as needed
- * @param length playload length
+ * @param length payload length
*/
- void setPlayloadLength(uint32_t length) {
- playloadLength = length;
- setSR(playloadLength <= 255);
+ void setPayloadLength(uint32_t length) {
+ payloadLength = length;
+ setSR(payloadLength <= 255);
}
/**
- * get the playload length
- * @return playload length
+ * get the payload length
+ * @return payload length
*/
- uint32_t getPlayloadLength() const {
- return playloadLength;
+ uint32_t getPayloadLength() const {
+ return payloadLength;
}
/**
@@ -224,7 +225,7 @@
* @return 3 or 6
*/
uint16_t getRecordLength() const {
- return (getSR() ? 3 : 6) + typeLength + playloadLength;
+ return (getSR() ? 3 : 6) + typeLength + payloadLength;
}
/**
@@ -239,15 +240,15 @@
outBuffer[index++] = headerFlags;
outBuffer[index++] = typeLength;
if (getSR()) {
- outBuffer[index++] = (uint8_t) playloadLength;
+ outBuffer[index++] = (uint8_t) payloadLength;
} else {
- outBuffer[index++] = (uint8_t) ((playloadLength & 0xFF000000)
+ outBuffer[index++] = (uint8_t) ((payloadLength & 0xFF000000)
>> 24);
- outBuffer[index++] = (uint8_t) ((playloadLength & 0x00FF0000)
+ outBuffer[index++] = (uint8_t) ((payloadLength & 0x00FF0000)
>> 16);
- outBuffer[index++] = (uint8_t) ((playloadLength & 0x0000FF00)
+ outBuffer[index++] = (uint8_t) ((payloadLength & 0x0000FF00)
>> 8);
- outBuffer[index++] = (uint8_t) (playloadLength & 0x000000FF);
+ outBuffer[index++] = (uint8_t) (payloadLength & 0x000000FF);
} //if-else
return index;
} //writeHeader
@@ -262,9 +263,9 @@
headerFlags = buffer[index++];
typeLength = buffer[index++];
if (getSR()) {
- playloadLength = buffer[index++];
+ payloadLength = buffer[index++];
} else {
- playloadLength = (((uint32_t) buffer[index + 0]) << 24)
+ payloadLength = (((uint32_t) buffer[index + 0]) << 24)
| (((uint32_t) buffer[index + 1]) << 16)
| (((uint32_t) buffer[index + 2]) << 8)
| ((uint32_t) buffer[index + 3]);
@@ -273,11 +274,25 @@
return index;
} //loadHeader
+ /**
+ * equal operator
+ * @param other other object to compare
+ * @return true if the 2 record header are equals
+ */
+ bool operator==(const RecordHeader &other) const{
+ return (headerFlags==other.headerFlags) &&
+ (typeLength==other.typeLength) &&
+ (payloadLength==other.payloadLength);
+ }
+
+ bool operator!=(const RecordHeader &other) const{
+ return !(*this==other);
+ }
private:
uint8_t headerFlags;
uint8_t typeLength;
- uint32_t playloadLength;
+ uint32_t payloadLength;
};
} /* namespace NDefLib */