Hi,
it seems, the Arduino's SPI library has an SPISettings class and Energia's SPI library not. Some older version of the mfr522 library (version=1.1.8, for example) don't use the SPISettings class and compiles for TivaC.
class SPISettings {
public:
SPISettings(uint32_t clock, uint8_t bitOrder, uint8_t dataMode) {
if (__builtin_constant_p(clock)) {
init_AlwaysInline(clock, bitOrder, dataMode);
} else {
init_MightInline(clock, bitOrder, dataMode);
}
}
SPISettings() {
init_AlwaysInline(4000000, MSBFIRST, SPI_MODE0);
}
private:
void init_MightInline(uint32_t clock, uint8_t bitOrder, uint8_t dataMode) {
init_AlwaysInline(clock, bitOrder, dataMode);
}
void init_AlwaysInline(uint32_t clock, uint8_t bitOrder, uint8_t dataMode)
__attribute__((__always_inline__)) {
// Clock settings are defined as follows. Note that this shows SPI2X
...
