clang setbit clearbit

原文链接： clang setbit clearbit

/include/linux/bitops.h

#define SET_BIT(x, n) (x |= (1 << n))
#define CLR_BIT(x, n) (x &= ~(1 << n))
#define GET_BIT(x, n) ((x >> n) & 0x01)


#define set_bit(register_8, bit) (register_8 |= (1 << bit))
#define clear_bit(register_8, bit) (register_8 &= ~(1 << bit))
#define toggle_bit(register_8, bit) (register_8 ^= (1 << bit))

#define set_bit(reg,bit) reg|=(1<<bit)          //pondra en 1 el bit elegido de la variable elegida.
#define clr_bit(reg,bit) reg&=~(1<<bit)         //pondra en 0 el bit elegido de la variable elegida.
#define tog_bit(reg,bit) reg^=(1<<bit)          //toggleara el bit elegido de la variable elegida.
#define set_output(ddr,bit) ddr|=(1<<bit)    //setea salida.
#define set_input(ddr,bit) ddr&=~(1<<bit)     //setea entrada.
#define get_bit(ddr,bit) ((ddr>>bit)&1)          //devuelve el bit elegido de la variable elegida (para if).
#define clr_reg(reg) reg&=0                     //limpia el registro elegido.
#define set_reg(reg) reg|=255

#define led4_out set_output(DDRD,4)
#define led5_out set_output(DDRD,5)
#define	led6_out set_output(DDRD,6)
#define	led7_out set_output(DDRD,7)

#define	led4_off set_bit(PORTD,4)
#define	led5_off set_bit(PORTD,5)
#define	led6_off set_bit(PORTD,6)
#define	led7_off set_bit(PORTD,7)


#define HIGH   		1
#define LOW       	0
#define TRUE   		1
#define FALSE   	0
#define ON    		1
#define OFF   		0
#define TOGGLE		2
#define ENABLE		1
#define DISABLE		0
#define ENABLED		1
#define DISABLED	0
#define NO			0	
#define YES			1
#define PRESSED 	1

#define STOP		0
#define FORWARD		1
#define REVERSE		2
#define SPIN_RIGHT	3
#define SPIN_LEFT	4

#define set_bit(var, pin)		var |= 1<<(unsigned char) pin
#define clear_bit(var, pin)		var &= ~(1<<(unsigned char)pin)
#define test_bit(var, pin)		((var & (1<<(unsigned char) pin)) >> pin)
#define toggle_bit(var, pin)	var ^= 1<<(unsigned char) pin	

#define clr_bit(var, pin) 		clear_bit(var,pin)
#define tog_bit(var, pin)		toggle_bit(var,pin)
#define tst_bit(var, pin)		var & (1<<(unsigned char) pin)

//#define set_bit(var, pin)		var |= 1<<(unsigned char) pin
//#define clr_bit(var, pin)		var &= ~(1<<(unsigned char)pin)
//#define tog_bit(var, pin)		var ^= 1<<(unsigned char) pin	

#define input_bit(var, pin)		var &= ~(1<<(unsigned char) pin)
#define output_bit(var, pin)	var |= 1<<(unsigned char) pin
#define digital_read(pin) 		pin_value(pin + 8)
#define quit()					while(1)

#endif

contect

/* Handy macros for GPIO */
#define CONCAT(a, b)    a##_##b
#define PORT(a, b)      CONCAT(a , b)


#define LED_PORT    PD
#define LED_PIN     PIN3


/* GPIO setup */
// Set pin data direction as output
PORT(LED_PORT, DDR)  |= LED_PIN; // i.e. PB_DDR |= (1 << 5);
// Set pin as "Push-pull"
PORT(LED_PORT, CR1)  |= LED_PIN; // i.e. PB_CR1 |= (1 << 5);