CCS/MSP430F5529: remark #10372-D: (ULP 4.1) Detected uninitialized Port C in this project. Recommend initializing all unused ports to eliminate wasted current consumption on unused pins.

Amazing excellent and helpful stuff! Thank You!

Hello,

unfortunatelly I chose according to the old project status a f instead a fr device. My controller is the MSP430f5528.

The fix of the undefined pins helped a lot! 4 uA.

But now I've tested the following code, right now wondering why the controller sucks 27uA when sleeping at 3V3 and 19uA at 1,99 V. What is my mistake? I'll study now the clock system in more detail - assuming there is something wrong configured by default which prevents the system from switching to LPM3? Right? :

void main(){
WDTCTL = WDTPW | WDTHOLD;

/* UCSCTL6|=XT2OFF;
UCSCTL6|=XT1OFF;
UCSCTL6|=SMCLKOFF;
// This settings didn't turn out to have any effect to the low power performance in this benchmark.
*/

PADIR=0xffff; PAOUT=0x0000; // Ports 1 and 2
PBDIR=0xffff; PBOUT=0x0000; // Ports 3 and 4
PCDIR=0xffff; PCOUT=0x0000; // Ports 5 and 6
PJDIR=0xffff; PJOUT=0x0000; // Jtag Port

_low_power_mode_3();
}

Make sure you're not measuring the current consumption during an active debug session, since you may not be able to enter a LPMx and will consume more power. I'd recommend using EnergyTrace in CCS to measure the current consumption. Are you using an MSP-FET to program the device? If so, this tool supports EnergyTrace.

Regards,

James

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