add Low-Power demo

esp8266 · devyte · Feb 2, 2020 · Jan 6, 2020 · Jan 6, 2020 · Jan 9, 2020
commit 601a5aeb638b67081d2a9f430bcf16935977a7fc
diff --git a/libraries/esp8266/examples/LowPowerDemo/LowPowerDemo.ino b/libraries/esp8266/examples/LowPowerDemo/LowPowerDemo.ino
@@ -1,41 +1,41 @@
 /* This example demonstrates the different low-power modes of the ESP8266
 
-   The initial setup was a WeMos D1 Mini with 3.3V connected to the 3V3 pin through a meter
-   so that it bypassed the on-board voltage regulator and USB chip.  There's still about
-   0.3 mA worth of leakage amperage due to the unpowered chips.  These tests should work with
-   any module, although on-board components will affect the actual current measurement.
-   While the modem is turned on the amperage is > 67 mA or changing with a minimum value.
-   To verify the 20 uA Deep Sleep amperage the voltage regulator and USB chip were removed.
-
-   This test series requires an active WiFi connection to illustrate two tests.  If you
-   have problems with WiFi, uncomment the #define DEBUG for additional WiFi error messages.
-   The test requires a pushbutton switch connected between D3 and GND to advance the tests.
   You'll also need to connect D0/GPIO16 to RST for the Deep Sleep tests.  If you forget to
-   connect D0 to RST it will hang after the first Deep Sleep test. D0 is driven high during
-   Deep Sleep, so you should use a Schottky diode between D0 and RST if you want to use a 
-   reset switch; connect the anode of the diode to RST, and the cathode to D0.
-   
-   Additionally, you can connect an LED from any free pin through a 1K ohm resistor to the 
-   3.3V supply, though preferably not the 3V3 pin on the module or it adds to the measured 
-   amperage.  When the LED blinks you can proceed to the next test.  When the LED is lit 
-   continuously it's connecting WiFi, and when it's off the CPU is asleep.  The LED blinks 
-   slowly when the tests are complete.  Test progress can also be shown on the serial monitor.
-
-   WiFi connections will be made over twice as fast if you can use a static IP address.
-
-   This example is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   This example is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public License
-   along with this example; if not, write to the Free Software Foundation, Inc.,
-   51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA  */
+ The initial setup was a WeMos D1 Mini with 3.3V connected to the 3V3 pin through a meter
+ so that it bypassed the on-board voltage regulator and USB chip.  There's still about
+ 0.3 mA worth of leakage amperage due to the unpowered chips.  These tests should work with
+ any module, although on-board components will affect the actual current measurement.
+ While the modem is turned on the amperage is > 67 mA or changing with a minimum value.
+ To verify the 20 uA Deep Sleep amperage the voltage regulator and USB chip were removed.
+
+ This test series requires an active WiFi connection to illustrate two tests.  If you
+ have problems with WiFi, uncomment the #define DEBUG for additional WiFi error messages.
+ The test requires a pushbutton switch connected between D3 and GND to advance the tests.
+ You'll also need to connect D0/GPIO16 to RST for the Deep Sleep tests.  If you forget to
+ connect D0 to RST it will hang after the first Deep Sleep test. D0 is driven high during
+ Deep Sleep, so you should use a Schottky diode between D0 and RST if you want to use a 
+ reset switch; connect the anode of the diode to RST, and the cathode to D0.
+
+ Additionally, you can connect an LED from any free pin through a 1K ohm resistor to the 
+ 3.3V supply, though preferably not the 3V3 pin on the module or it adds to the measured 
+ amperage.  When the LED blinks you can proceed to the next test.  When the LED is lit 
+ continuously it's connecting WiFi, and when it's off the CPU is asleep.  The LED blinks 
+ slowly when the tests are complete.  Test progress can also be shown on the serial monitor.
+
+ WiFi connections will be made over twice as fast if you can use a static IP address.
+
+ This example is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ This example is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with this example; if not, write to the Free Software Foundation, Inc.,
+ 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA  */
 
 #include <ESP8266WiFi.h>
 #include <coredecls.h>         // crc32()