Hello,
We are currently using MangOH Yellow cards with a WP7702 chip.
Some of our systems in the field have encountered a problem.
They no longer go into ULPM mode.
We use the latest image of the MangOH Yellow software provided by the MangOH website: 0.7.0
With a slight modification of the Mango firmware: Modification of the accelerometer driver
And modification of the Yocto: Modification of the curl package + addition of python library
Method to switch to ULPM mode:
We use a Legato application in C
Code :
//Réveil sur Timer
le_ulpm_BootOnTimer(TimeULPM);
//Réveil sur ADC
le_ulpm_BootOnAdc(2,100,500,1799);
if (le_ulpm_ShutDown() == LE_OK){
sleep(5);
FILE *fp = popen(“echo -e 'at+cpsms=0\r\n’ > /dev/ttyAT”,“r”);
pclose(fp);
}
We have never encountered this problem in the office so far.
As the systems are currently in the field, I cannot provide more logs.
Has anyone encountered this problem before?
Thank,
Jérémy