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There is currently no function to get the current pin mode. A possible implementation is:
int pinMode(uint8_t pin){ if (pin >= NUM_DIGITAL_PINS) return (-1); uint8_t bit = digitalPinToBitMask(pin); uint8_t port = digitalPinToPort(pin); volatile uint8_t *reg = portModeRegister(port); if (*reg & bit) return (OUTPUT); volatile uint8_t *out = portOutputRegister(port); return ((*out & bit) ? INPUT_PULLUP : INPUT);}The return value is the pin mode or error code (-1) for illegal pin number.
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