Other Parts Discussed in Thread: ENERGYTRACE,
Hi there,
I am very new to code composer studio, as well as these Texas Instruments boards, so I apologise if I make any mistakes. My problem is with using low power modes. I am running the code "msp430fr599x_lpm4.c" provided by Texas Instruments by merely copying and pasting the code into my project. The code is as follows:
/* --COPYRIGHT--,BSD_EX * Copyright (c) 2015, Texas Instruments Incorporated * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * * Neither the name of Texas Instruments Incorporated nor the names of * its contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * ******************************************************************************* * * MSP430 CODE EXAMPLE DISCLAIMER * * MSP430 code examples are self-contained low-level programs that typically * demonstrate a single peripheral function or device feature in a highly * concise manner. For this the code may rely on the device's power-on default * register values and settings such as the clock configuration and care must * be taken when combining code from several examples to avoid potential side * effects. Also see www.ti.com/grace for a GUI- and www.ti.com/msp430ware * for an API functional library-approach to peripheral configuration. * * --/COPYRIGHT--*/ //****************************************************************************** // MSP430FR5x9x Demo - Enters LPM4 // // Description: Device enters LPM4 // NOTE: The MSP-TS430PN80B target socket module drives an LED that can result // in high power numbers when turned ON. Measure current with LED jumper JP9 // disconnected. Also, the board's built-in I2C BSL pull-up resistors should // be disabled by removing JP17 and JP18 to further minimize current // consumption. // // MSP430FR5994 // --------------- // /|\| | // | | | // --|RST | // | | // | | // // William Goh // Texas Instruments Inc. // October 2015 // Built with IAR Embedded Workbench V6.30 & Code Composer Studio V6.1 //****************************************************************************** #include <msp430.h> int main(void) { WDTCTL = WDTPW | WDTHOLD; // Stop WDT // Configure GPIO P1OUT = 0; P1DIR = 0xFF; P2OUT = 0; P2DIR = 0xFF; P3OUT = 0; P3DIR = 0xFF; P4OUT = 0; P4DIR = 0xFF; P5OUT = 0; P5DIR = 0xFF; P6OUT = 0; P6DIR = 0xFF; P7OUT = 0; P7DIR = 0xFF; P8OUT = 0; P8DIR = 0xFF; PJOUT = 0; PJDIR = 0xFFFF; // Disable the GPIO power-on default high-impedance mode to activate // previously configured port settings PM5CTL0 &= ~LOCKLPM5; // Clock System Setup CSCTL0_H = CSKEY_H; // Unlock CS registers CSCTL1 = DCOFSEL_6; // Set DCO to 8MHz CSCTL2 = SELA__VLOCLK | SELS__DCOCLK | SELM__DCOCLK; // Set SMCLK = MCLK = DCO // ACLK = VLOCLK CSCTL3 = DIVA__1 | DIVS__1 | DIVM__1; // set all dividers CSCTL0_H = 0; // Lock CS registers __bis_SR_register(LPM4_bits); __no_operation(); // For debugger }
When I run the debugger on this code, along with Energy Trace for 60 seconds I get the following results:
This is far higher power consumption than I expected. At first I thought it may not be going into low power mode, but Energy Trace++ shows that it is in fact in Low Power Mode 4 for the entire duration of the 60 seconds:
So my question is, what on Earth is going on? Or is this the expected results? A picture of my board is below (Note LED101 and LED102 are on, I believe these show the status of the eZ-FET and I am not sure you can turn them off), should I re-arrange the jumpers or something?:
Thanks for you help :).