FastIO_LPC43XX.h

00001 #ifdef TARGET_LPC43XX
00002 
00003 #include "mbed.h"
00004 #include "pinmap.h"
00005 
00006 typedef struct {
00007     uint32_t mask;
00008 } fastio_vars;
00009 
00010 #define PORT            (((unsigned int)pin >> PORT_SHIFT) & 0x0000000F)
00011 #define PINMASK         (1 << ((int)pin & 0x1F))
00012 static inline void initpin(PinName pin);
00013 
00014 #define INIT_PIN        container.mask = PINMASK; initpin(pin)
00015 #define DESTROY_PIN     
00016 
00017 #define SET_DIR_INPUT   ( ((LPC_GPIO_T *)(LPC_GPIO_PORT_BASE))->DIR[PORT] &= ~PINMASK )
00018 #define SET_DIR_OUTPUT  ( ((LPC_GPIO_T *)(LPC_GPIO_PORT_BASE))->DIR[PORT] |= PINMASK )
00019 #define SET_MODE(pull)  (pin_mode(pin, pull))
00020 
00021 #define WRITE_PIN_SET   ( ((LPC_GPIO_T *)(LPC_GPIO_PORT_BASE))->SET[PORT] = PINMASK )
00022 #define WRITE_PIN_CLR   ( ((LPC_GPIO_T *)(LPC_GPIO_PORT_BASE))->CLR[PORT] = PINMASK )
00023 
00024 #define READ_PIN        ( (((LPC_GPIO_T *)(LPC_GPIO_PORT_BASE))->PIN[PORT] & container.mask) ? 1 : 0 )
00025 
00026 static inline void initpin(PinName pin) {
00027     unsigned int port = (unsigned int)MBED_GPIO_PORT(pin);
00028     int f = SCU_PINIO_FAST | ((port > 4) ? (4) : (0));
00029     pin_function(pin, f);
00030 }
00031 
00032 #endif