Hi,Martin Kovar
Here are my pictures : The EVB's Power supply pins(1--5V,3--GND) connected the DC, I can measure
the EVB's current. Is this the microcontroller's current? If not ,how can I measure the current.
My project code is below:
/* FILE NAME: lp_stop_Z4_1.c COPYRIGHT (c) NXP Semiconductors 2016 */
/* All Rights Reserved */
/* PLATFORM: DEVKIT-MPC5748G */
/* DESCRIPTION: Low power STOP mode is entered and exits based on RTC timeout*/
/* While in RUN mode a pin to an DS4 LED on NXP EVB is turned */
/* and stop mode is entered. */
/* At RTC timeout(after 0.1s), the stop mode is exited and */
/* DS4 LED is turned off and again goes to the stop mode. */
/* Again at RTC timeout(after 0.9s), the stop mode is exited */
/* and the loop is repeated */
/*****************************************************************************/
/* REV AUTHOR DATE DESCRIPTION OF CHANGE */
/* --- ----------- ---------- --------------------- */
/* 1.0 SM 29 Jul 2014 Initial Version */
/* 1.1 SM 07 Jan 2015 Minor code re-organization */
/* 1.2 SM 12 Feb 2015 Removed unrequired SIUL ME_PCTL code */
/* 1.3 K Shah 15 Mar 2016 Porting to S32DS */
/*****************************************************************************/
#include "derivative.h" /* include peripheral declarations */
#include "project.h"
#include "mode.h"
#define KEY_VALUE1 0x5AF0ul
#define KEY_VALUE2 0xA50Ful
extern void xcptn_xmpl(void);
void peri_clock_gating (void); /* ConfigureS gating/enabling peripheral(WKPU, RTC-API) clocks */
void hw_init(void)
{
#if defined(DEBUG_SECONDARY_CORES)
uint32_t mctl = MC_ME.MCTL.R;
#if defined(TURN_ON_CPU1)
/* enable core 1 in all modes */
MC_ME.CCTL[2].R = 0x00FE;
/* Set Start address for core 1: Will reset and start */
MC_ME.CADDR[2].R = 0x11d0000 | 0x1;
#endif
#if defined(TURN_ON_CPU2)
/* enable core 2 in all modes */
MC_ME.CCTL[3].R = 0x00FE;
/* Set Start address for core 2: Will reset and start */
MC_ME.CADDR[3].R = 0x13a0000 | 0x1;
#endif
MC_ME.MCTL.R = (mctl & 0xffff0000ul) | KEY_VALUE1;
MC_ME.MCTL.R = mctl; /* key value 2 always from MCTL */
#endif /* defined(DEBUG_SECONDARY_CORES) */
}
__attribute__ ((section(".text")))
/************************************ Main ***********************************/
int main(void)
{
uint32_t i = 0;
xcptn_xmpl (); /* Configures and Enables Interrupts */
peri_clock_gating(); /* Configures gating/enabling peripheral(WKPU, RTC-API) clocks for modes*/
/* Configuration occurs after mode transition */
system160mhz();
/* Sets clock dividers= max freq, calls PLL_160MHz function which:
MC_ME.ME: enables all modes for Mode Entry module
Connects XOSC to PLL
PLLDIG: LOLIE=1, PLLCAL3=0x09C3_C000, no sigma delta, 160MHz
MC_ME.DRUN_MC: configures sysclk = PLL
Mode transition: re-enters DRUN mode
*/
/* Additional mode configurations for STOP, RUN3 modes & enter RUN3 mode: */
MC_ME.RUN_MC[3].R = 0x001F0090; /* MVRON=1 FLAON=RUN SIRCON=1 FIRCON=1 sysclk=FIRC */
MC_ME.STOP_MC.R = 0x00130090; /* MVRON=1 FLAON=RUN SIRCON=1 FIRCON=1 sysclk=FIRC */
MC_ME.MCTL.R = 0x70005AF0; /* Enter RUN3 Mode & Key */
MC_ME.MCTL.R = 0x7000A50F; /* Enter RUN3 Mode & Inverted Key */
while (MC_ME.GS.B.S_MTRANS) {} /* Wait for RUN3 mode transition to complete */
/* Note: could wait here using timer and/or I_TC IRQ */
while(MC_ME.GS.B.S_CURRENT_MODE != 7) {} /* Verify RUN3 (0x7) is the current mode */
/* Configure Wake up Unit for low power exit */
WKPU.WIREER.R = 0x00000042; /* Enable rising edge events on RTC, PE[0] */
WKPU.WIFER.R = 0x00000040; /* Enable analog filters - , PE[0] */
WKPU.WRER.R = 0x00000002; /* Enable wake up events for RTC, but not PE[0] */
WKPU.WIPUER.R = 0x000FFFFF; /* Enable WKPU pins pull-ups to stop leakage*/
/* Enable general purpose output that is connected to LED1 on NXP EVB */
//SIUL2.MSCR[PA10].B.OBE = 1; /* Pad PA10 (10): OBE=1. On EVB active low DS4 LED */
SIUL2.MSCR[PG5].B.OBE = 1;//EVB LED
SIUL2.MSCR[PG2].B.OBE = 1; //EVB LED
while(1) {
//SIUL2.GPDO[PA10].R = 0; /* Pad PA10 (10): EVB DS4 LED active low */
SIUL2.GPDO[PG5].R = 0; //EVB LED
SIUL2.GPDO[PG2].R = 0; //EVB LED
RTC.RTCC.R = 0x00000000; /* Clear CNTEN to reset */
RTC.RTCC.R = 0xA0001000; /* CLKSEL = 128KHz SIRC, FRZEN=CNTEN=1*/
RTC.RTCVAL.R = 12800; /* #RTC clocks. Timeout=12.8K/128KHz=0.1 sec*/
WKPU.WISR.R = 0x00000002; /* Clear wake up flag RTC */
enter_STOP_mode(); /* Enter STOP mode */
/* ON STOP MODE EXIT, CODE CONTINUES HERE: */
while(MC_ME.GS.B.S_CURRENT_MODE != 7) {} /* Verify RUN3 (0x7) is current mode */
//SIUL2.GPDO[PA10].R = 1; /* Pad PA10 (10): EVB DS4 LED active low */
SIUL2.GPDO[PG5].R = 1; //EVB LED
SIUL2.GPDO[PG2].R = 1; //EVB LED
RTC.RTCC.R = 0x00000000; /* Clear CNTEN to reset */
RTC.RTCC.R = 0xA0001000; /* CLKSEL = 128KHz SIRC, FRZEN=CNTEN=1*/
RTC.RTCVAL.R = 115200; /* #RTC clocks. Timeout=115.2K/128KHz=0.9 sec*/
WKPU.WISR.R = 0x00000002; /* Clear wake up flag RTC */
enter_STOP_mode (); /* Enter STOP mode */
/* ON STOP MODE EXIT, CODE CONTINUES HERE: */
while(MC_ME.GS.B.S_CURRENT_MODE != 7) {} /* Verify RUN3 (0x7) is current mode */
i++; /* Counter for STOP mode pairs of cycles */
}
return 0;
}
/******************************End of Main ***********************************/
void peri_clock_gating (void) { /* Configures gating/enabling peripheral(WKPU, RTC-API) clocks for modes*/
MC_ME.RUN_PC[0].R = 0x00000000; /* gate off clock for all RUN modes */
MC_ME.RUN_PC[1].R = 0x000000FE; /* Configures peripheral clock for all RUN modes */
MC_ME.RUN_PC[7].R = 0x00000088; /* Run peripheral configuration 7 settings: run in DRUN, RUN3 modes */
MC_ME.LP_PC[7].R = 0x00000400; /* LP peripheral configuration 7 settings: run in STOP */
MC_ME.PCTL[93].R = 0x3F; /* WKPU: select peripheral configuration RUN_PC[7], LP_PC[7] */
MC_ME.PCTL[102].R = 0x3F; /* RTC-API: select peripheral configuration RUN_PC[7], LP_PC[7] */
}
Hello,
you measure EVB current not microcontroller current. EVB current difference between micro in stop mode and run mode is not the same as current difference measure directly at microcontroller .
Unfortunately, this board is not much suitable for the current measurement. You have to disassemble R124 and connect there the ampere meter. Please see picture below:
Regards,
Martin
