i2c_msp432.h

/*
 * spi_msp432.h
 *
 *  Created on: 14.06.2016
 *      Author: Andreas Terstegge
 */
 
#ifndef _I2C_MSP432_H_
#define _I2C_MSP432_H_
 
#include "msp.h"
#include "gpio_msp432.h"
#include "i2c_interface.h"
 
namespace I2C {
    const uint16_t OWN_7_BIT_ADDR    = 0x0000;
    const uint16_t OWN_10_BIT_ADDR   = EUSCI_B_CTLW0_A10;
    const uint16_t SLAVE_7_BIT_ADDR  = 0x0000;
    const uint16_t SLAVE_10_BIT_ADDR = EUSCI_B_CTLW0_SLA10;
    const uint16_t MASTER_MODE       = EUSCI_B_CTLW0_MST;
    const uint16_t SLAVE_MODE        = 0x0000;
    const uint16_t CLK_ACLK          = EUSCI_B_CTLW0_SSEL__ACLK;
    const uint16_t CLK_SMCLK         = EUSCI_B_CTLW0_SSEL__SMCLK;
}
 
class i2c_msp432 : public i2c_interface {
 
public:
 
    i2c_msp432(EUSCI_B_Type *i2c,
               uint16_t mode = I2C::SLAVE_7_BIT_ADDR |
                               I2C::MASTER_MODE |
                               I2C::CLK_SMCLK);
 
    virtual ~i2c_msp432();
 
    int16_t i2cRead(uint16_t addr, uint8_t *rxbuf,
                    uint16_t len, bool sendStop = true) override;
 
    int16_t i2cWrite(uint16_t addr, uint8_t *txbuf,
                     uint16_t len, bool sendStop = true) override;
 
    void setSpeed(uint32_t) override;
 
private:
    bool _initialized;
    void initialize();
 
    //    void send_ADR_ACK();
    //    void send_ADR_NACK();
    void set_receiver();
    void set_transmitter();
    //    void send_ACK();
    //    void send_NACK();
    void send_START();
    void send_STOP();
 
    gpio_msp432 _sda;
    gpio_msp432 _scl;
 
    EUSCI_B_Type *_EUSCI;
    uint16_t _mode;
};
 
#endif // _I2C_MSP432_H_