Replacement for regular GPIO (DigitalIn, DigitalOut, DigitalInOut) classes which has superior speed. (modified for use opendrain in stm32)
Fork of FastIO by
Diff: FastIO_LPC11UXX.h
- Revision:
- 0:d394ebd01052
- Child:
- 2:1a6ed4b84590
diff -r 000000000000 -r d394ebd01052 FastIO_LPC11UXX.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/FastIO_LPC11UXX.h Tue Jul 01 17:04:08 2014 +0000 @@ -0,0 +1,37 @@ +#ifdef TARGET_LPC11UXX + +#include "mbed.h" +#include "pinmap.h" + +typedef struct { + uint32_t mask; +} fastio_vars; + +#define PORT ((unsigned int)pin >> PORT_SHIFT) +#define PINMASK (1 << ((int)pin & 0x1F)) +static inline void initpin(PinName pin); + +#define INIT_PIN container.mask = PINMASK; initpin(pin) + +#define SET_DIR_INPUT (LPC_GPIO->DIR[PORT] &= ~PINMASK) +#define SET_DIR_OUTPUT (LPC_GPIO->DIR[PORT] |= PINMASK) +#define SET_MODE(pull) (pin_mode(pin, pull)) + +#define WRITE_PIN_SET (LPC_GPIO->SET[PORT] = PINMASK) +#define WRITE_PIN_CLR (LPC_GPIO->CLR[PORT] = PINMASK) + +#define READ_PIN ((LPC_GPIO->PIN[PORT] & container.mask) ? 1 : 0) + +static inline void initpin(PinName pin) { + int f = ((pin == P0_0) || + (pin == P0_10) || + (pin == P0_11) || + (pin == P0_12) || + (pin == P0_13) || + (pin == P0_14) || + (pin == P0_15)) ? (1) : (0); + + pin_function(pin, f); +} + +#endif \ No newline at end of file