Jamesgrr

This is resolved, I believe it was setup related. I'm not sure what caused it but it's fine now?? The worst kind of problem honestly. Thanks for assistance though.

Oh sorry I didnt even realise I didn't mention that... It's MSP430FR2433

Hi, I have noticed (after much hair pulling) that serial doesn't work when board definition 1.0.5 is selected. Wondering if anyone else is experiencing this issue? 1.0.4 works perfectly. Tested on both the launchpad and a custom board.

Yes, I have been asking around to try find out as much as I can about this. From Energia and Ti perspective. Thanks for that PR.

Based on what I am learning here: https://e2e.ti.com/support/microcontrollers/msp430/f/166/p/749845/2768754#2768754 It appears that the "Enhanced Clock System" isn't available on this chip. Which is what limits ACLK to REFO. Will update if I learn more about using it with the RTC module.

Thanks, this is indeed the case. I believe this is the section in question here. It's abit weird because the comment above suggests that it should fall back to VLO? But actually uses REFO. Additionally, in 'MSP430FR2433.h" there is no define for setting ALCK to VLO, unlike the FR5xx boards. /* If starting the XTAL timed out then fall back to VLO */ if(!timeout) { /* ACLK = VLO = ~ 12 KHz */ vlo_freq = 8000; /* Source ACLK from REFO */ CSCTL4 |= SELA__REFOCLK; If I look at where SELA_REFOCLK is defined, I can see there is no way to direcctly do this #define SELA__XT1CLK (0x0000) /* ACLK Source Select XT1CLK */ #define SELA__REFOCLK (0x0100) /* ACLK Source Select REFOCLK * This is unlike the FR2355 which has #define SELA__XT1CLK (0x0000) /* XT1CLK with divider (must be no more than 40 kHz) */ #define SELA__REFOCLK (0x0100) /* REFO (internal 32-kHz clock source) */ #define SELA__REFOCLK_H (0x0001) #define SELA__VLOCLK (0x0200) /* VLO (internal 10-kHz clock source) */ #define SELA__VLOCLK_H (0x0002) #define SELA__RESERVED (0x0300) /* Reserved */ #define SELA__RESERVED_H (0x0003) I have tried defining VLOCLK to use in Wiring. But this has been unsuccessful. I am not too familiar with the 2355 so will need to see why this is different, but a cursory look at the datasheet doesn't spot anything too different in their Clock System. Any insights as to why these are different and how to use VLO for ACLK would be greatly appreciated. (here is also the chance that I have dived into a rabbit hole here and am completely misunderstanding this)

Yes this is the conclusion I have come too. I believe Energia' implementation of the Watchdog here is what causes the higher usage. It is very impressive that it manages to get even close. I think it is abit misleading to call SleepSeconds() true LPM3 though. It would be great to see some other implementation though; as the MSP430 is capable of sub 1ua sleep. Perhaps I will experiment with a library in the future to make this possible. Thanks for your response.

Is this still the recommended way to use FRAM with Energia?

That LoRaWAN Gateway is awesome. Would love to see the source for all this.

I think messing with the power regulator is no good. My 'implementation' of it with Energia breaks SleepSeconds and the device restarts. Any assistance with getting current using SleepSeconds below 17ua would be greatly appreciated.

Using Driverlib without energia I am able to get VERY low consumption (less than .5ua) Would love to know how this can be integrated with Energia SleepSeconds. Thanks. WDT_A_hold(WDT_A_BASE); P2SEL0 |= BIT0 + BIT1; // P2.0: XOUT; P2.1: XI1 //CSCTL4 = SELMS__DCOCLKDIV | SELA__XT1CLK; // MCLK=SMCLK=DCO; ACLK=XT1 // Port Configuration all un-used pins to output low P1OUT = 0x00; P2OUT = 0x00; P3OUT = 0x00; P1DIR = 0xff; P2DIR = 0xff; P3DIR = 0xff; PM5CTL0 &= ~LOCKLPM5; // Disable the GPIO power-on default high-impedance mode // to activate previously configured port settings PMM_turnOffRegulator(); __bis_SR_register(LPM3_bits + GIE); // Enter LPM3 __no_operation(); // For debug

Hi, I'm working on a board with an FR2433, and also doing testing with the FR2433 Launchpad. I am trying to troubleshoot high current using SleepSeconds() With Suspend, I can get 1.5ua but sleep seconds is around 18ua, I believe it should be far lower based on the datasheet for LPM3. I am using a ucurrent gold so feel confident about the measurement. I set all my pins (1-22) to OUTPUT LOW and have also tried with INPUT_PULLDOWN Any assistance here would be greatly appreciated. Thankyou.

. Hey Kreitzz, I would be interested to know if you have tried using sleepseconds with any different results. I am using the same board and am hoping to get low power sleep working as well.