Make scale-adjust-hx711.ino compile against Espressif/ESP8266

CHANGES.rst

@@ -9,6 +9,7 @@ CHANGES
 
 in-progress
 ===========
+- :ref:`scale-adjust-firmware`: Make `scale-adjust-hx711.ino`_ compile against Espressif/ESP8266
 
 
 2017-03-31 0.14.0

doc/source/resources.rst

@@ -39,6 +39,8 @@
 .. _Terrine: https://github.com/hiveeyes/arduino/tree/master/libraries/Terrine
 .. _Terkin: https://github.com/hiveeyes/arduino/tree/master/libraries/Terkin
 .. _Hiveeyes-Lib: https://github.com/hiveeyes/arduino/tree/master/libraries/Hiveeyes
+.. _scale-adjust-ads1231.ino: https://github.com/hiveeyes/arduino/blob/master/scale-adjust/ADS1231/scale-adjust-ads1231.ino
+.. _scale-adjust-hx711.ino: https://github.com/hiveeyes/arduino/blob/master/scale-adjust/HX711/scale-adjust-hx711.ino
 
 .. BERadio
 .. _BERadio C++: https://github.com/hiveeyes/arduino/tree/master/libraries/BERadio

scale-adjust/HX711/Makefile-ESP8266.mk

@@ -0,0 +1,26 @@
+# makeEspArduino: A makefile for ESP8266/Arduino projects.
+# https://github.com/plerup/makeEspArduino
+
+# Announce path to your "ESP8266 Arduino Core" installation
+# Can also be announced via environment variable: export ESP_ROOT=...
+# ESP_ROOT=~/dev/hiveeyes/sdk/esp8266-arduino-core-2.3.0/Arduino-2.3.0
+
+# Attempt to autodetect libraries: Does not work because it would try to compile LowPower libs and more.
+#LIBS = $(shell perl -e 'use File::Find;$$d = shift;while (<>) {$$f{"$$1"} = 1 if /^\s*\#include\s+[<"]([^>"]+)/;}find(sub {print $$File::Find::dir," " if $$f{$$_}}, $$d);'  $(ESP_ROOT)/libraries $(SKETCH))
+#LIBS += $(shell perl -e 'use File::Find;$$d = shift;while (<>) {$$f{"$$1"} = 1 if /^\s*\#include\s+[<"]([^>"]+)/;}find(sub {print $$File::Find::dir," " if $$f{$$_}}, $$d);'  ../libraries $(SKETCH))
+#LIBS -= ../libraries/LowPower
+
+# Manually enumerate libraries, this is currently the only deterministic way.
+LIBS = \
+    $(ESP_LIBS)/esp8266 \
+    $(ESP_LIBS)/GDBStub \
+    $(ESP_LIBS)/SPI \
+    $(ESP_LIBS)/Wire \
+    ../../libraries/HX711 \
+    ../../libraries/RobTillaart-Arduino/libraries/RunningMedian
+
+# For ESP8266 (makeEspArduino)
+BUILD_EXTRA_FLAGS += -DARDUINO_ARCH_ESP8266=true
+
+# Run makeEspArduino
+include ../../tools/makeEspArduino/makeEspArduino.mk

scale-adjust/HX711/scale-adjust-hx711.ino

@@ -83,8 +83,9 @@ float weightKg;
 RunningMedian weightSamples = RunningMedian(weightSamplesNumber);  // create RunningMedian object
 
 // power saving
+#ifndef ARDUINO_ARCH_ESP8266
 #include <LowPower.h>  // https://github.com/rocketscream/Low-Power
-
+#endif
 
 // Forward declarations
 void getWeight();
@@ -220,10 +221,15 @@ void getWeight() {
   do {
     // wait between samples
     Serial.flush();
+
+    #ifndef ARDUINO_ARCH_ESP8266
     for (int i=0; i<waitTimeLoadSamples; i++) {
       // sleep for one second
       LowPower.powerDown(SLEEP_1S, ADC_OFF, BOD_OFF); // delay 60 ms
     }
+    #else
+    delay(60);
+    #endif
 
     // power HX711 / load cell
     loadCell.power_up();

scale-adjust/README.rst

@@ -17,9 +17,6 @@ commonly used in industrial `load cell`_ components:
 - `scale-adjust-ads1231.ino`_ for ADS1231_ from Texas Instruments
 - `scale-adjust-hx711.ino`_ for HX711_ from Avia Semiconductor
 
-.. _scale-adjust-ads1231.ino: https://github.com/hiveeyes/arduino/blob/master/scale-adjust/ADS1231/scale-adjust-ads1231.ino
-.. _scale-adjust-hx711.ino: https://github.com/hiveeyes/arduino/blob/master/scale-adjust/HX711/scale-adjust-hx711.ino
-
 
 ************
 Instructions