twi_master.h File Reference

TWI Master driver for SAM. More...

#include "twi.h"
#include "sysclk.h"

Go to the source code of this file.

Macros
#define	twi_master_disable(p_twi)
#define	twi_master_enable(p_twi)

Typedefs
typedef twi_options_t	twi_master_options_t
typedef Twi *	twi_master_t
	This type can be used independently to refer to TWI master module for the architecture used.
typedef twi_packet_t	twi_package_t

Functions
static uint32_t	twi_master_setup (twi_master_t p_twi, twi_master_options_t *p_opt)

Detailed Description

TWI Master driver for SAM.

Copyright (c) 2011-2018 Microchip Technology Inc. and its subsidiaries.

\cond ASF_LICENSE

Definition in file sam_twi/twi_master.h.

Macro Definition Documentation

twi_master_disable

#define twi_master_disable

(

p_twi

)

Value:

twi_disable_master_mode(p_twi)

Definition at line 95 of file sam_twi/twi_master.h.

twi_master_enable

#define twi_master_enable

(

p_twi

)

Value:

twi_enable_master_mode(p_twi)

Definition at line 94 of file sam_twi/twi_master.h.

Typedef Documentation

twi_master_options_t

typedef twi_options_t twi_master_options_t

Definition at line 44 of file sam_twi/twi_master.h.

twi_package_t

typedef twi_packet_t twi_package_t

Definition at line 45 of file sam_twi/twi_master.h.

Function Documentation

twi_master_setup()

uint32_t twi_master_setup ( twi_master_t p_twi, twi_master_options_t * p_opt )

inlinestatic

Definition at line 47 of file sam_twi/twi_master.h.

{
    p_opt->master_clk = sysclk_get_peripheral_hz();
    p_opt->smbus      = 0;
#if SAMG55
    if (p_twi == TWI0) {
        sysclk_enable_peripheral_clock(ID_FLEXCOM0);
    } else if (p_twi == TWI1) {
        sysclk_enable_peripheral_clock(ID_FLEXCOM1);
    } else if (p_twi == TWI2) {
        sysclk_enable_peripheral_clock(ID_FLEXCOM2);
    } else if (p_twi == TWI3) {
        sysclk_enable_peripheral_clock(ID_FLEXCOM3);
    } else if (p_twi == TWI4) {
        sysclk_enable_peripheral_clock(ID_FLEXCOM4);
    } else if (p_twi == TWI5) {
        sysclk_enable_peripheral_clock(ID_FLEXCOM5);
    } else if (p_twi == TWI6) {
        sysclk_enable_peripheral_clock(ID_FLEXCOM6);
#ifdef _SAMG55_FLEXCOM7_INSTANCE_
    } else if (p_twi == TWI7) {
        sysclk_enable_peripheral_clock(ID_FLEXCOM7);
#endif /* _SAMG55_FLEXCOM7_INSTANCE_*/
    } else {
        // Do Nothing
    }
#else
#if (!(SAMG51 || SAMG53 || SAMG54))
    if (p_twi == TWI0) {
        sysclk_enable_peripheral_clock(ID_TWI0);
    } else
#endif
    if (p_twi == TWI1) {
        sysclk_enable_peripheral_clock(ID_TWI1);
#if (SAM4N || SAMG)
    } else if (p_twi == TWI2) {
        sysclk_enable_peripheral_clock(ID_TWI2);
#endif
    } else {
        // Do Nothing
    }
#endif
 
    return (twi_master_init(p_twi, p_opt));
}

References ID_TWI0, ID_TWI1, twi_options::master_clk, twi_options::smbus, TWI0, TWI1, and twi_master_init().