xc_ppf1901/drivers/eeprom.c

#include "eeprom.h"

#define ITYPE_IIC (0x01)
#define ITYPE_I2C (0x02)

static int rdwr_type;

int at24_i2c_init(uint32_t scl, uint32_t sda, uint8_t addr, int bits);
int at24_i2c_init_ex(i2c_t i2c, uint8_t addr, int bits);

void at24_i2c_close(void);
int at24_i2c_write(uint16_t addr, uint8_t data);
uint8_t at24_i2c_read(uint16_t addr);

int at24_iic_init(struct iic_descr *i2c, uint8_t addr, int bits);
void at24_iic_close(void);
uint8_t at24_iic_read(uint16_t addr);
int at24_iic_write(uint16_t addr, uint8_t data);

int eeprom_init(iic_t _i2c, uint8_t addr, int is_16bits_address)
{
    rdwr_type = ITYPE_IIC;
    return at24_iic_init(_i2c, addr, is_16bits_address);
}

int eeprom_init_with_io(uint32_t scl, uint32_t sda, uint8_t addr, int is_16bits_address)
{
    rdwr_type = ITYPE_I2C;
    return at24_i2c_init(scl, sda, addr, is_16bits_address);
}

int eeprom_init_with_i2c(i2c_t i2c, uint8_t addr, int is_16bits_address)
{
    rdwr_type = ITYPE_I2C;
    return at24_i2c_init_ex(i2c, addr, is_16bits_address);
}

void eeprom_close(void)
{
    switch (rdwr_type) {
        case ITYPE_IIC:
            at24_iic_close();
            break;
        case ITYPE_I2C:
            at24_i2c_close();
            break;
    }
    rdwr_type = 0;
}

int eeprom_write(uint16_t addr, uint8_t data)
{
    switch (rdwr_type) {
        case ITYPE_IIC:
            return at24_iic_write(addr, data);
        case ITYPE_I2C:
            return at24_i2c_write(addr, data);
    }
    return -1;
}

uint8_t eeprom_read(uint16_t addr)
{
    switch (rdwr_type) {
        case ITYPE_IIC:
            return at24_iic_read(addr);
        case ITYPE_I2C:
            return at24_i2c_read(addr);
    }
    return 0xff;
}