/*
 * cm_pcf8574_driver.c
 *
 *  Created on: 29. jan. 2024
 *      Author: Chris
 */
#include "cm_pcf8574_driver.h"
#include <stddef.h>

#define NUM_OF_RETRYS 3

static int checkInst(cm_pcf8574_t *inst){

	if(inst->i2c_transfer_evt == NULL)return CM_PCF8574_NOK;
	if(inst->i2c_inst == NULL)return CM_PCF8574_NOK;

	return CM_PCF8574_OK;


}

int cm_pcf8574_RegTransEvt(cm_pcf8574_t *inst, void *i2c_inst, setGet_I2C_Event_fpt i2c_transfer_evt){

	if(inst == NULL) return CM_PCF8574_NOK;

	inst->i2c_inst = i2c_inst;
	inst->i2c_transfer_evt = i2c_transfer_evt;



	return CM_PCF8574_OK;


}


/*// No need to do this.. because I2C driver does this for us..
int cm_pcf8574_IsDeviceActive(cm_pcf8574_t *inst){

	if(checkInst(inst)) return CM_PCF8574_NOK;

	uint8_t tx_buf[1] = {0};
	uint8_t ret = 0;

	for(uint8_t retry_ctr = 0; retry_ctr < NUM_OF_RETRYS; retry_ctr++){

		ret = inst->i2c_transfer_evt(inst->i2c_inst, (uint8_t*)&tx_buf, 2, CM_PCF8574_I2C_GET);

		if(ret == 0)return 0;

	}

	return ret;
}*/
int cm_pcf8574_SetPort(cm_pcf8574_t *inst, uint8_t port_val){

	if(checkInst(inst)) return CM_PCF8574_NOK;

	//inst->Port_1 = (cm_io_port_t)port_val;

	return inst->i2c_transfer_evt(inst->i2c_inst, (uint8_t*)&port_val, sizeof(inst->Port_1), CM_PCF8574_I2C_SET);





return 0;
}

// ret = inst->i2c_transfer_evt(inst->i2c_transfer_inst, (uint8_t*)&tx_buf, 2, LTR390_I2C_SET);
int cm_pcf8574_Init(cm_pcf8574_t *inst){

	if(checkInst(inst)) return CM_PCF8574_NOK;

	//return cm_pcf8574_IsDeviceActive(inst);

	return 0;
}