Search found 5 matches

by stefaanv
Wed Dec 05, 2018 4:41 pm
Forum: ESP-IDF
Topic: gettimeofday() returning erratic values
Replies: 6
Views: 7333

Re: gettimeofday() returning erratic values

additional information: The ULP wakeup every 5 minutes, which we assume is derived from the same clock source (either 32kHz crystal or 150kHr RC) does happen relatively sharp every 5 minutes. We do see a difference in accuracy between the crystal and the RC oscillator - as to be expected - but not t...
by stefaanv
Wed Dec 05, 2018 3:57 pm
Forum: ESP-IDF
Topic: gettimeofday() returning erratic values
Replies: 6
Views: 7333

gettimeofday() returning erratic values

We're developing an IoT application around the Wrover module. In this application, the ULP collects sensor data every five minutes while the main processors are in deep sleep. Once every hour, the main processor wakes up, collects the measurement data from the ULP and decides on proper actions. Beca...
by stefaanv
Sat Sep 23, 2017 5:22 am
Forum: ESP-IDF
Topic: i2c deep sleep wake stub example
Replies: 1
Views: 4160

i2c deep sleep wake stub example

Does anyone have an example of a deep sleep wake stub using i2c communication ?
by stefaanv
Thu Sep 21, 2017 5:35 pm
Forum: ESP-IDF
Topic: Documentation of ROM functions for deep sleep wake stub
Replies: 1
Views: 4311

Documentation of ROM functions for deep sleep wake stub

According to official documentation, deep sleep wake stub code can only call functions implemented in ROM or loaded into RTC Fast Memory.
How/where can I find which functions have been implemented in ROM ?
by stefaanv
Wed Sep 06, 2017 7:49 am
Forum: ESP-IDF
Topic: Not able to build in Eclipse
Replies: 0
Views: 3576

Not able to build in Eclipse

Hi, I'm trying to set up the IDF development environment according to instructions on http://esp-idf.readthedocs.io/en/latest/get-started/ IDF_PATH environment variable is set up and compiling from the mingw32 shell works fine. However, after a lot of effort I still fail to set up Eclipse to compile...