# Wake On GPIO error on WP7601, Firmware 12 , Legato 18.10.3

**URL:** <https://mangoh.discourse.group/t/wake-on-gpio-error-on-wp7601-firmware-12-legato-18-10-3/2579>\
**Category:** mangOH Red\
**Created:** [April 23, 2019, 1:23am UTC](https://mangoh.discourse.group/t/wake-on-gpio-error-on-wp7601-firmware-12-legato-18-10-3/2579 "2019-04-23T01:23:18Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![matthewpang](https://avatars.discourse-cdn.com/v4/letter/m/c68b51/32.png) [@matthewpang](https://mangoh.discourse.group/u/matthewpang)\
**Post date:** [April 23, 2019, 1:23am UTC](https://mangoh.discourse.group/t/wake-on-gpio-error-on-wp7601-firmware-12-legato-18-10-3/2579/1 "2019-04-23T01:23:18Z")

</div>

Hello All,

I have a WP 7601-1 (Firmware Release 12, Legato 18.10.3) running on the Mangoh red dev board .

I’ve noticed that asking the board to wake on GPIO returns an error

root@swi-mdm9x28-wp:~# pmtool bootOn gpio 36 high  
SUCCESS!

root@swi-mdm9x28-wp:~# pmtool shutdown  
Can’t initiate shutdown of MDM

Issuing pmtool shutdown **without** the GPIO wake is successful. Issuing pmtool shutdown with a bootOn timer is also successful.

root@swi-mdm9x28-wp:~# cm info  
Device: WP7601-1  
Firmware Version: SWI9X07Y\_02.18.05.00 000000 jenkins 2018/07/19 17:40:21  
Bootloader Version: SWI9X07Y\_02.18.05.00 000000 jenkins 2018/07/19 17:40:21  
MCU Version: 002.011  
PRI Part Number (PN): 9907596  
PRI Revision: 001.003  
Carrier PRI Name: GENERIC  
Carrier PRI Revision: 002.041\_003  
SKU: 1103728

Here are is the relevant part of the log

Apr 22 17:12:35 swi-mdm9x28-wp user.info Legato: INFO | powerManagerService[976]/powerMgr T=main | le\_pm.c OnClientConnect() 224 | Connection from client pmtool/3301  
Apr 22 17:12:35 swi-mdm9x28-wp user.info Legato: INFO | powerManagerService[976]/powerMgr T=main | le\_pm.c OnClientDisconnect() 252 | Client pid 3301 disconnected.  
Apr 22 17:12:39 swi-mdm9x28-wp user.info Legato: INFO | powerManagerService[976]/powerMgr T=main | le\_pm.c OnClientConnect() 224 | Connection from client pmtool/3309  
Apr 22 17:12:39 swi-mdm9x28-wp user.info kernel: [956.212658] pm\_set\_mcu\_ulpm\_enable: SWIMCU\_PM\_ULPS\_ENTER - continue sync with MCU  
Apr 22 17:12:39 swi-mdm9x28-wp user.info kernel: [956.212711] swimcu\_pm\_wusrc\_config: configured GPIO wakeup source 0x1  
Apr 22 17:12:39 swi-mdm9x28-wp user.err kernel: [956.212726] swimcu\_pm\_wusrc\_config: check statep-\>gpio\_pin\_mask 0x1  
Apr 22 17:12:39 swi-mdm9x28-wp user.err kernel: [956.213252] i2c-msm-v2 78b8000.i2c: NACK: slave not responding, ensure its powered: msgs(n:1 cur:0 tx) bc(rx:0 tx:18) mode:FIFO slv\_addr:0x3a MSTR\_STS:0x0c1300c8 OPER:0x00000090  
Apr 22 17:12:39 swi-mdm9x28-wp user.err Legato: =ERR= | powerManagerService[976]/powerMgr T=main | le\_ulpm.c WriteToSysfs() 146 | Error writing to sysfs file ‘/sys/module/swimcu\_pm/boot\_source/enable’ (Input/output error).  
Apr 22 17:12:39 swi-mdm9x28-wp user.info Legato: INFO | powerManagerService[976]/powerMgr T=main | le\_pm.c OnClientDisconnect() 252 | Client pid 3309 disconnected.  
Apr 22 17:12:39 swi-mdm9x28-wp user.err kernel: [956.223419] swimcu\_pm\_wusrc\_config: failed to GPIO config 0x1 (4)  
Apr 22 17:12:39 swi-mdm9x28-wp user.info kernel: [956.223741] swimcu\_pm\_wusrc\_config\_reset  
Apr 22 17:12:39 swi-mdm9x28-wp user.err kernel: [956.223762] enable\_store: Failed to enable mode 1: -5

---

<div class="post-metadata">

**Author:** ![matthewpang](https://avatars.discourse-cdn.com/v4/letter/m/c68b51/32.png) [@matthewpang](https://mangoh.discourse.group/u/matthewpang)\
**Post date:** [April 23, 2019, 9:20pm UTC](https://mangoh.discourse.group/t/wake-on-gpio-error-on-wp7601-firmware-12-legato-18-10-3/2579/2 "2019-04-23T21:20:58Z")

</div>

solution is use pmtool bootOn gpio N both