With a npm1300 I'm able to charge (for instance, the LED showing charging status is on, BCHGCHARGESTATUS is reporting the different steps..... ) but the battery current reporting is not working properly: IBAT always 0, and ADCIBATMEASSTATUS is 00 (it should be 01 or 11).
If we measure the real current, it is a few mA, so it is just a matter of the npm1300 ADC or the reporting.
I'm reviewing all the configuration but I don't see anything....
Any idea?
Thanks!!
Just to complete the information: the voltage and current are working fine (see oscilloscope screenshot of IBAT and VBAT for a charging session).
And this is the configuration that I'm applying (It is not in zephyr format, but I think it is easy to understand)
{ LEDDRV0MODESEL, LEDDRV_MODESEL_ERROR }, // Configure LED_0 for error reporting
{ LEDDRV1MODESEL, LEDDRV_MODESEL_CHARGING }, // Configure LED_1 for charging reporting
{ LEDDRV2MODESEL, LEDDRV_MODESEL_HOST }, // Configure LED_2 for host control
{ LEDDRV2SET, 1 },
{ ADCCONFIG, ADC_ADCCONFIG_VBATAUTOENABLE_AUTOENABLE }, // VBAT measurement every 1s
{ ADCAUTOTIMCONF, ADC_ADCAUTOTIMCONF_MAX_TIME_TEMP }, // NTC meas each 1024 ms and interal temp each 32 ms
{ ADCIBATMEASEN, ADC_ADCIBATMEASEN_IBATMEASENABLE_ENABLE }, // Enable IBAT measures after every VBAT measure
{ GPIOMODE1, GPIOS_GPIOMODE1_GPIOMODE_GPOIRQ }, // GPIO1 reports interrupts (configured in XX)
{ GPIOMODE2, GPIOS_GPIOMODE2_GPIOMODE_GPOPLW }, // GPIO2 reports Power Loss Warning (configured in POC)
{ POFCONFIG, POF_ON_CONFIG }, // Power fails will reported via GPIO
// Load Switch
{LDSWCONFIG, LDSWCONFIG_SOFT_START_DISABLED }, // Disable soft start for LDSW1 and LDSW2
// battery configuration
{ ADCNTCRSEL, ADC_ADCNTCRSEL_ADCNTCRSEL_10K }, // Battery has a 10kOhm NTC
{BCHGDISABLESET, BCHGDISABLESET_IGNORE_NTC}, // Ignore NTC
// Charging
{ BCHGVTRICKLESEL, BCHGVTRICKLESEL_2V9}, // Minimun voltage to start constant current charging (2.9V)
{ BCHGISETMSB, BCHGISETMSB_215MA }, // Charging current 215mA (MSB)
{ BCHGISETLSB, BCHGISETLSB_215MA }, // Charging current 215mA (LSB)
{ BCHGVTERM, BCHARGER_BCHGVTERM_BCHGVTERMNORM_4V20 }, // Voltage to change from constant current charging to costant voltage charging while normal temp (4.2V)
{ BCHGVTERMR, BCHARGER_BCHGVTERM_BCHGVTERMNORM_3V60 }, // Voltage to change from constant current charging to costant voltage charging while warm temp (3.6V)
{ BCHGITERMSEL, BCHGITERMSEL_SEL20}, // Current to stop charging in contant voltage (20% of charging current, so 43mA)
{ BCHGCONFIG, BCHGCONFIG_ENABLE_CHARING_IF_WARM}, // Enable Charging if battery is warm
// Discharging
{ BCHGISETDISCHARGEMSB, BCHGISETDISCHARGEMSB_1000MA }, // Discharging current limit of 1 A (MSB)
{ BCHGISETDISCHARGELSB, BCHGISETDISCHARGELSB_1000MA }, // Discharging current limit of 1 A (LSB)
//Enable charging
{ BCHGENABLESET, BCHARGER_ENABLECHARGING }, // Enable Battery Charging and cool charging
{TASKAUTOTIMUPDATE, ADC_TASKAUTOTIMUPDATE_UPDATEAUTOTIM}, // Auto update NTC and DIE temp measurements
