SPI mode now works with Wemos, weird conditional compile due to esp8266/Arduino#2270

Author: whatnick

ATM90E26.ino

@@ -13,6 +13,14 @@
 
 // the sensor communicates using SPI, so include the library:
 #include <SPI.h>
+
+/*******************
+ * WEMOS SPI Pins:
+ * SCLK - D5
+ * MISO - D6
+ * MOSI - D7
+ * SS   - D8
+ *******************/
 #include "energyic.h"
 
 void setup() {

energyic.h

@@ -71,7 +71,7 @@
 // pins used for the connection with the sensor
 // the other you need are controlled by the SPI library):
 //const int energy_IRQ = 2;
-const int energy_CS = 10;
+const int energy_CS = D8; // WEMOS SS pin
 //const int energy_WO = 8;
 
 unsigned short CommEnergyIC(unsigned char RW,unsigned char address, unsigned short val);

energyic.ino

@@ -20,9 +20,14 @@
 	unsigned char* data=(unsigned char*)&val;
 	unsigned short output;
   //SPI interface rate is 200 to 160k bps. It Will need to be slowed down for EnergyIC
-  #if !defined(ENERGIA)
+  #if !defined(ENERGIA) && !defined(ESP8266)
   SPISettings settings(200000, MSBFIRST, SPI_MODE3); 
-  #endif	
+  #endif
+
+  #if defined(ESP8266)
+  SPISettings settings(200000, MSBFIRST, SPI_MODE2);
+  #endif
+   
 	//switch MSB and LSB of value
 	output=(val>>8)|(val<<8);
 	val=output;
@@ -35,7 +40,7 @@
   SPI.beginTransaction(settings);
   #endif      
 	digitalWrite (energy_CS,LOW);
-        delayMicroseconds(10);
+  delayMicroseconds(10);
 	SPI.transfer(address);
   /* Must wait 4 us for data to become valid */
   delayMicroseconds(4);