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72 lines
1.7 KiB
72 lines
1.7 KiB
#include "eeprom.h"
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#define ITYPE_IIC (0x01)
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#define ITYPE_I2C (0x02)
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static int rdwr_type;
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int at24_i2c_init(uint32_t scl, uint32_t sda, uint8_t addr, int bits);
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int at24_i2c_init_ex(i2c_t i2c, uint8_t addr, int bits);
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void at24_i2c_close(void);
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int at24_i2c_write(uint16_t addr, uint8_t data);
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uint8_t at24_i2c_read(uint16_t addr);
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int at24_iic_init(struct iic_descr *i2c, uint8_t addr, int bits);
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void at24_iic_close(void);
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uint8_t at24_iic_read(uint16_t addr);
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int at24_iic_write(uint16_t addr, uint8_t data);
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int eeprom_init(iic_t _i2c, uint8_t addr, int is_16bits_address)
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{
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rdwr_type = ITYPE_IIC;
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return at24_iic_init(_i2c, addr, is_16bits_address);
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}
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int eeprom_init_with_io(uint32_t scl, uint32_t sda, uint8_t addr, int is_16bits_address)
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{
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rdwr_type = ITYPE_I2C;
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return at24_i2c_init(scl, sda, addr, is_16bits_address);
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}
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int eeprom_init_with_i2c(i2c_t i2c, uint8_t addr, int is_16bits_address)
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{
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rdwr_type = ITYPE_I2C;
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return at24_i2c_init_ex(i2c, addr, is_16bits_address);
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}
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void eeprom_close(void)
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{
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switch (rdwr_type) {
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case ITYPE_IIC:
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at24_iic_close();
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break;
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case ITYPE_I2C:
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at24_i2c_close();
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break;
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}
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rdwr_type = 0;
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}
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int eeprom_write(uint16_t addr, uint8_t data)
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{
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switch (rdwr_type) {
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case ITYPE_IIC:
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return at24_iic_write(addr, data);
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case ITYPE_I2C:
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return at24_i2c_write(addr, data);
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}
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return -1;
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}
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uint8_t eeprom_read(uint16_t addr)
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{
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switch (rdwr_type) {
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case ITYPE_IIC:
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return at24_iic_read(addr);
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case ITYPE_I2C:
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return at24_i2c_read(addr);
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}
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return 0xff;
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}
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