sam_twi/twi_master.h

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/*
 * Support and FAQ: visit <a href="https://www.microchip.com/support/">Microchip Support</a>
 */
 
#ifndef _TWI_MASTER_H_
#define _TWI_MASTER_H_
 
#include "twi.h"
#include "sysclk.h"
 
typedef Twi *twi_master_t;
typedef twi_options_t twi_master_options_t;
typedef twi_packet_t twi_package_t;
 
static inline uint32_t twi_master_setup(twi_master_t p_twi,
        twi_master_options_t *p_opt)
{
    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));
}
 
#define twi_master_enable(p_twi)   twi_enable_master_mode(p_twi)
#define twi_master_disable(p_twi)  twi_disable_master_mode(p_twi)
 
#endif // _TWI_MASTER_H_