Without the 0x prefix, you need to specify the base explicitly, otherwise there's no way to tell: x = int("deadbeef", 16). ... <看更多>

* returns hexidecimal number as an integer. * throws BadNumberFormatException if [hex] isn't a valid hex number. */ static int hexToNum(String hex) { int val ... ... <看更多>

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The Arduino print / println function casts the int to a long, which is 4 bytes long for Arduinos. ... <看更多>