DEV-15573 datasheet(18/31 Pages) SPARKFUN

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True- Both load tempKey and verify commands were successful.

False- Verification failure, Communication failure or IC command execution failure.

Random Number Generator

.random(long max)

This function returns a positive random Long between 0 and max.

Max can be up to the larges positive value of a long: 2147483647

Input: max

Long. (1-2147483647)

Output: Long 32 bits (4 bytes)

.random(long min, long max)

This function returns a random Long between min and max.

Min and max can be positive or negative numbers.

Input: min

Long. (-2147483647 to +2147483647)

Input: max

Long. (-2147483647 to +2147483647)

Output: Long 32 bits (4 bytes)

.getRandomByte(boolean debug)

This function returns a positive random byte.

Output: Byte

.getRandomInt(boolean debug)

This function returns a positive random integer.

Output: Unassigned 16-bit integer

.getRandomLong(boolean debug)

This function returns a Long.

Output: Long 32 bits (4 bytes)r

.updateRandom32Bytes(boolean debug)

This function gets a complete random number from the IC (all 32 bytes).

It stores it in a global public variable array called .random32Bytes

If you wish to access this global variable and use as a 256 bit random number,

then you will need to access this array and combine it's elements as you wish.

Output: Boolean

True- Random command execution successful.

False- Communication failure or IC command execution failure.

Example 1: Configuration

DEV-15573 데이터시트(PDF) 18 Page - SparkFun Electronics