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SPI pins are defined in newer version of Arduino

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See: https://github.com/arduino/Arduino/pull/4814
This commit is contained in:
Kristian Sloth Lauszus 2016-10-25 03:23:40 -05:00
parent 238c26908f
commit 231fb542a8
1 changed files with 13 additions and 1 deletions
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14
usbhost.h
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@ -85,7 +85,19 @@ public:
};
/* SPI pin definitions. see avrpins.h */
#if defined(__AVR_ATmega1280__) || (__AVR_ATmega2560__) || defined(__AVR_ATmega32U4__) || defined(__AVR_AT90USB646__) || defined(__AVR_AT90USB1286__)
#if defined(PIN_SPI_SCK) && defined(PIN_SPI_MOSI) && defined(PIN_SPI_MISO) && defined(PIN_SPI_SS)
// Use pin defines: https://github.com/arduino/Arduino/pull/4814
// Based on: https://www.mikeash.com/pyblog/friday-qa-2015-03-20-preprocessor-abuse-and-optional-parentheses.html
#define NOTHING_EXTRACT
#define EXTRACT(...) EXTRACT __VA_ARGS__
#define PASTE(x, ...) x ## __VA_ARGS__
#define EVALUATING_PASTE(x, ...) PASTE(x, __VA_ARGS__)
#define UNPAREN(x) EVALUATING_PASTE(NOTHING_, EXTRACT x)
#define APPEND_PIN(pin) P ## pin // Appends the pin to 'P', e.g. 1 becomes P1
#define MAKE_PIN(x) EVALUATING_PASTE(APPEND_, PIN(UNPAREN(x)))
typedef SPi< MAKE_PIN(PIN_SPI_SCK), MAKE_PIN(PIN_SPI_MOSI), MAKE_PIN(PIN_SPI_MISO), MAKE_PIN(PIN_SPI_SS) > spi;
#undef MAKE_PIN
#elif defined(__AVR_ATmega1280__) || (__AVR_ATmega2560__) || defined(__AVR_ATmega32U4__) || defined(__AVR_AT90USB646__) || defined(__AVR_AT90USB1286__)
typedef SPi< Pb1, Pb2, Pb3, Pb0 > spi;
#elif defined(__AVR_ATmega168__) || defined(__AVR_ATmega328P__)
typedef SPi< Pb5, Pb3, Pb4, Pb2 > spi;