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RobMaker

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  1. Hi, running this blinking led code on Launchpad MSP430FR2433 // Ultra Low Power Blink Example #define LED RED_LED void setup() { for (int i = 2; i < 20; i++) { if (!(i == 11 || i == 12)){ pinMode(i, OUTPUT); digitalWrite(i, LOW); } } } void loop() { sleep(2000); digitalWrite(LED, HIGH); // turn the LED on (HIGH is the voltage level) sleep(3); digitalWrite(LED, LOW); // turn the LED off by making the voltage LOW } resulting in this current profile: The power consumption looks nice (with LED current limited via 3.3 kOhm) but the blinking frequency is rather 10 seconds instead of 2 seconds. The launchpad is configured to run with external crystal. Changing sleep(2000) to sleep(999) I got the following profile: The frequency is now OK but I am not sure if the same LPM mode is achieved during sleep phase. Please, could someone give an insight about the difference? Can I run 2s blink frequency with ~1µA consumption during sleep phase? Thanks in advance, Robert
  2. RobMaker

    Energia and Wolverine - Tips

    Hi! I try to implement solution 3) for the MSP430FR2433. Its exactly my use case... implementing a second (persistent) buffer of ~3kb which does otherwise not fit to the 4kb RAM anymore. However, following the suggested directory structure I cannot find the folder MSP430FR2433. Looking at folder msp430fr2xx_4xxgeneric instead, there is only one file periph.x but not memory.x. Does the solution still work for this MCU & Energia? Thanks in advance.
  3. RobMaker

    Hello from Germany

    Hi everyone, I am playing around with ePaper displays and wrote a library for them link, trying to reduce energy budget so far to allow self-powered, little devices with ePaper screens. Now I moved from several ARM-based MCUs to MSP430FR2433 launchpad to try benefiting from its low power modes. Getting the EPD to run with Energia worked almost out of the box. Getting low power (sleep) modes to run in Energia is my next goal. Cheers, Robert
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