Wakeup SPC570S40E1 from STOP mode by NMI pin.

[Tran Hung]

Posted on May 31, 2018 at 09:31

Hello everyone;

I am working with SPC570S discovery board. I would like to implement the STOP mode to reduce the power consumption and then wake up by using NMI pin like PA[4] or PC[15].

I already entry the STOP mode however the board does not wake up from STOP mode. The program seems to be halted and then showed a warning like this picture.

The mode is then unidentified.

My code is attached in the file below.

Can someone help me to configure the wake up unit from STOP mode?

I am appreciate to your help. Thanks you so much.

#stop-mode-wake-source #wakeup-pin #spc570s-disp Note: this post was migrated and contained many threaded conversations, some content may be missing.

[Tran Hung]

Posted on June 01, 2018 at 07:03

LE_SAINT.Erwan

‌ Can you support me about this problem?

[Tran Hung]

Posted on June 01, 2018 at 08:42

Yvin.Erwan

‌

Can you support me about this problem?

[Erwan YVIN]

Posted on June 06, 2018 at 10:11

Hello ,

According to your code :

Flash is in Low power mode ..

MC_ME.STOP0_MC.B.FLAON = 3; /* Flash is in low-power mode */�?�?

you can not access to the Wakeup function

Maybe ,you should put your function in RAM.

(Standby or Stop Mode) there are nice example in SPC5Studio :

SPC560Dxx OS-Less STANDBY SRAM Test Application for Discovery

SPC560Dxx_RLA WKPU API Test Application for Discovery

You can not debug in Low Power mode.

Best regards

Erwan

[Tran Hung]

Posted on June 15, 2018 at 05:28

Hello

Yvin.Erwan

‌!

I looked at some examples of SPC560 processor:

SPC560Dxx OS-Less STANDBY SRAM Test Application for Discovery

SPC560Dxx_RLA WKPU API Test Application for Discovery

I found that SPC560 has interrupt vectors for the wake up feature: [table 155: Interrupt vector table]

However, I havent found any software interrupt vector in SPC5

Which interrupt should I use to wake up in SPC570 MCU?

[Erwan YVIN]

Posted on June 15, 2018 at 16:03

Hello Tran ,

it is different from SPC56D.

you should see the chapter 3

you should set your pad in NMI and set correctly the NMI Configuration Register

Example for a machine Check Occurrence

void interruptRoutine_IVOR1(void){printf('
***** Interrupt IVOR1: Machine Check occurs *****
');NMI_MCR_ISR(); /* NMI wake up from Lpmode*/};�?�?�?�?�?�?�?

Best regards

Erwan

[Tran Hung]

Posted on June 18, 2018 at 02:22

Hello

Yvin.Erwan

‌

Your answer is as same as my expectations. I used NMI pins PC[15] as a wake-up source < Chapter 21 in reference manual>.

However, I cannot use vector interrupt IVOR1. Looking at the isor configuration file < ivor_cfg.h>

IVOR1_HANDLER is always set FALSE:

/**

* @brief IVOR1 Machine Check Interrupt Handler. * @details It is set to @p TRUE, IVOR1 interrupt will be handled calling the * relative callback (i.e. ivor1_callback), passing CSRR0 and CSRR1 registers * as parameter (containing respectively, an instruction address, as closely as * possible, set to the effective address of an instruction that was executing * or about to be executed when the Machine Check exception occurred, and * Machine State Register at the time of interrupt). */ #define IVOR1_HANDLER FALSE

=> 1. How to change this IVOR1 configuration in SPC5studio?

In <ivor.s> file IVOR1 is configured as

#if IVOR1_HANDLER

.align 4 .globl _IVOR1 .type _IVOR1, @function _IVOR1: SAVE_CONTEXT_CRITICAL

LOAD_CSSR0_CSSR1

e_bl _ivor1_callback /* Branch to the proper callback*/

RESTORE_CONTEXT_CRITICAL

se_rfci #endif

=> 2.Howto configure

<ivor.s> to use IVOR1 interrupt?

Thank you so much!

[zambrano.luigi]

Posted on June 18, 2018 at 11:59

Hi Tran,

currently the graphic interface to configure the IVOR has not been ported yet on the SPC570S family. So, if you need to use the IVOR1, the following workarond is needed:

1. Set IVOR1_HANDLER to TRUE in the file ivor_cfg.h (please, take into account that this file is generated. So, if you will re-generate, the modification will be lost and you will have to re-apply it).

2. Define in your main the function _ivor1_callback. This function is the IVOR0 callback and will be exectute each time an IVOR1 will occur.

Please, feel free to contact us for any other clarification.

Regards,

Luigi

[Tran Hung]

Posted on June 19, 2018 at 11:29

Hello

Zambrano.Luigi

‌

Thank you so much for your guidance.

I followed your steps to create the interrupt by IVOR1 but it hasnt yet worked.

My code can be briefly described as follow:

1) Configure PC[15], PA[4] as a NMI pin

2) Add function gotoRunMode() and gotoStandbymode in RAM

[quote] [/quote]

[Tran Hung]

Posted on June 19, 2018 at 11:44

2) Add function gotoRunMode() and gotoStandbymode in RAM

3) Configure wakeup pin

4. interrupt handler ivor1

void _ivor1_callback (void)

{    gotoRunMode();}

=>

1. I see that register WKPU.NSR is not change status when NMI pin change its state (0->1).

2. interrupt hander ivor1 doesnt work.

The detail program is saved in the attached file in the link below

=> Can you look at my code one time? 

https://drive.google.com/open?id=1CboTw1KvDvnVSOaQwzxYvjLkSPWuKhE4