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/*
* Copyright (c) 2016 embedded brains GmbH. All rights reserved.
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
#ifndef LIBBSP_ARM_ATSAM_ATSAM_I2C_H
#define LIBBSP_ARM_ATSAM_ATSAM_I2C_H
#include <libchip/chip.h>
#include <libchip/include/pio.h>
#include <bsp.h>
#include <rtems/thread.h>
#include <dev/i2c/i2c.h>
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
#define TWI_AMOUNT_PINS 2
typedef struct {
i2c_bus base;
Twihs *regs;
/* First message and number of messages that have to be processed. */
i2c_msg *msgs;
uint32_t msg_todo;
/* Information about the current transfer. */
bool stop_request;
uint32_t current_msg_todo;
uint8_t *current_msg_byte;
/* Error information that can be returned to the task */
uint32_t err;
uint32_t output_clock;
rtems_binary_semaphore sem;
rtems_vector_number irq;
} atsam_i2c_bus;
int i2c_bus_register_atsam(
const char *bus_path,
Twihs *register_base,
rtems_vector_number irq,
const Pin pins[TWI_AMOUNT_PINS]
);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* LIBBSP_ARM_ATSAM_ATSAM_I2C_H */
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