fsa9480_dev_t fsa9480_detect_device(uint8_t chip_addr) {
uint16_t dev_type, int_val;
int i;
fsa9480_dev_t ret = FSA9480_UNKNOWN;
for (i = 0; i < 100; i++) {
int _ok = smbus_read_word(chip_addr, FSA9480_REG_INT1, &int_val);
if ((_ok < 0) || !int_val)
{
break;
}
}
mdelay(1000);
if (smbus_read_word(chip_addr, FSA9480_REG_DEV_T1, &dev_type) < 0) {
printf("%s: failed to get device type\n", __func__);
goto fail;
}
if (dev_type & DEV_USB_MASK) {
ret = FSA9480_USB;
}
else if (dev_type & DEV_UART_MASK) {
ret = FSA9480_UART;
}
else if (dev_type & DEV_JIG_MASK) {
ret = FSA9480_JIG;
}
else if (dev_type & DEV_CHARGER_MASK) {
ret = FSA9480_CHARGER;
}
else if (dev_type & DEV_USB_OTG) {
ret = FSA9480_USB_HOST;
}
fsa9480_print_dev_type(ret);
fail:
return ret;
}
uint8_t max17435_get_current(MAX17435 *max, uint16_t *ma){
uint16_t mv_read;
if(smbus_read_word(max->config.i2c, max->config.address, MAX17435_CMD_IINP_VOLTAGE, &mv_read) != 0){
return ERR_COMMS;
}
float mv_sense = (float)mv_read / 20.0f; // The read value is 20x the sense
float ohms = (float)max->config.css_resistor_mohms / 1000.0f;
*ma = (uint16_t)(mv_sense / ohms);
return ERR_OK;
}
uint8_t max17435_get_relearn_voltage(MAX17435 *max, uint16_t *mv){
return smbus_read_word(max->config.i2c, max->config.address, MAX17435_CMD_RELEARN_VOLTAGE, mv);
}
uint8_t max17435_get_input_current_limit(MAX17435 *max, uint16_t *ma){
return smbus_read_word(max->config.i2c, max->config.address, MAX17435_CMD_INPUT_CURRENT, ma);
}
uint8_t max17435_get_charge_current(MAX17435 *max, uint16_t *ma){
return smbus_read_word(max->config.i2c, max->config.address, MAX17435_CMD_CHARGE_CURRENT, ma);
}
uint8_t max17435_get_charge_voltage(MAX17435 *max, uint16_t *mv){
return smbus_read_word(max->config.i2c, max->config.address, MAX17435_CMD_CHARGE_VOLTAGE, mv);
}