Hello all,
Apologies if any of this has been asked before,
Hardware
nPM1300-EK v0.9.1
nRF5340DK v2.0.2
Question 1)
When following this page: Use the nPM1300 EK with an nRF5340 DK (nordicsemi.com)
I cannot communicate via i2c with the npm1300ek sample unless I bias-pull-up the i2c interface via
&pinctrl {
i2c1_default: i2c1_default {
group1 {
psels = <NRF_PSEL(TWIM_SDA, 1, 2)>,
<NRF_PSEL(TWIM_SCL, 1, 3)>;
bias-pull-up;
};
};
};
in the npm1300_ek.overlay file.
Not sure if I am wiring or approaching it the wrong way, wiring it incorrectly, or making a critical error. The sample works fine with this adjustment to the overlay. I have confirmed this to be the behavior with or without a battery connected.
Question 2)
When using regulator vset LDO1 <VAL> in the sample, I measure the output on OUT1 of the board to compare to what I choose for VSET (and what I get as a return value with VGET).
Within the range of 1-2V, it is a pretty consistent match. However, when setting it to values above that, my measured values and my set values begin to stop following closely. i.e. for a VSET of 3V, I get ~2V measured on VOUT1.
Am I missing something on the EK board? Perhaps a jumper somewhere?
My jumpers are configured as follows:
| Header | Connected Pin 1 | Connected Pin 2 |
| P13 | RSET1 | VSET1 |
| P14 | RSET2 | VSET2 |
| P1 | VBAT | VBATIN |
| P17 | ALL | CONNECTED |
| P15 | ALL | CONNECTED |
| P18 | VDDIO | VOUT2 |
Best regards,
