Getting LSM6DS3 to Work on XIAO MG24 Sense with Gecko SDK (I2C)

Products & Technology XIAO
5

@mattmagic - Code attached…

// Forum Test
#include "sl_i2cspm_instances.h"

#define LSM6DS3_ADDR       0x6A
#define WHO_AM_I_REG       0x0F
#define EXPECTED_WHOAMI    0x69

uint8_t probe_lsm6ds3(void)
{
    uint8_t who = 0;
    uint8_t cmd = WHO_AM_I_REG;

    I2C_TransferSeq_TypeDef seq = {
        .addr  = LSM6DS3_ADDR << 1,
        .flags = I2C_FLAG_WRITE_READ
    };

    seq.buf[0].data = &cmd;
    seq.buf[0].len  = 1;
    seq.buf[1].data = &who;
    seq.buf[1].len  = 1;

    I2C_TransferReturn_TypeDef ret = I2CSPM_Transfer(SL_I2CSPM_I2C_PERIPHERAL, &seq);
    printf("Transfer result: %d, WHO_AM_I = 0x%02X\r\n", ret, who);
    if (ret == i2cTransferDone)
      return who;
    else
      return 0;
}

void app_init(void)
{
    if (probe_lsm6ds3() == 0) {
        printf("Could not probe LSM6DS3...\r\n");
    }
    else
    {
      printf("Found LSM6DS3!!!\r\n");
    }
}

Do you have an actual 'MG24 Sense connected?