charge_controller_target/src/interfaces/i2c_peripherals_scan.c

#include "ti/driverlib/dl_i2c.h"
#include "ti_msp_dl_config.h"
#include <stdio.h>
#include <stdint.h>


/*
Scans all the addresses of the peripherals:
*/
void I2C_scanBus(I2C_Regs *i2c) {
    printf("Scanning I2C Bus...\n");

    // **Step 1: Reset I2C Controller if Busy**
    if (DL_I2C_getControllerStatus(i2c) & DL_I2C_CONTROLLER_STATUS_BUSY_BUS) {
        printf("I2C Bus Busy! Resetting I2C Controller...\n");
        DL_I2C_disableController(i2c);  // Disable I2C
        delay_cycles(20000);
        DL_I2C_enableController(i2c);   // Re-enable I2C
        delay_cycles(20000);
    }

    // **Step 2: Scan I2C Bus**
    for (uint8_t addr = 0x08; addr < 0x78; addr++) {  // Valid I2C Address Range
        DL_I2C_startControllerTransfer(i2c, addr, DL_I2C_CONTROLLER_DIRECTION_RX, 1);
        delay_cycles(5000);
        
        if (!(DL_I2C_getControllerStatus(i2c) & DL_I2C_CONTROLLER_STATUS_ERROR)) {
            printf("Device found at: 0x%02X\n", addr);
        }else {
            // Clear the error by resetting the I2C controller
            DL_I2C_disableController(i2c);
            DL_I2C_enableController(i2c);
        }
    }

    //printf("I2C Scan Complete!\n");
}