add Low-Power demo

esp8266 · devyte · Feb 2, 2020 · Jan 6, 2020 · Jan 6, 2020 · Jan 9, 2020
commit a3ddde148d5da993443e011dbd518755eaa15e15
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()