Renaming SPI.send() to SPI.transfer() to better reflect its bi-directional nature.

Author: damellis

examples/BarometricPressureWebServer/BarometricPressureWebServer.pde

@@ -183,8 +183,8 @@ void writeRegister(byte registerName, byte registerValue) {
   // take the chip select low to select the device:
   digitalWrite(chipSelectPin, LOW); 
 
-  SPI.send(registerName); //Send register location
-  SPI.send(registerValue); //Send value to record into register
+  SPI.transfer(registerName); //Send register location
+  SPI.transfer(registerValue); //Send value to record into register
 
   // take the chip select high to de-select:
   digitalWrite(chipSelectPin, HIGH); 
@@ -205,16 +205,16 @@ unsigned int readRegister(byte registerName, int numBytes) {
   // take the chip select low to select the device:
   digitalWrite(chipSelectPin, LOW); 
   // send the device the register you want to read:
-  int command = SPI.send(registerName); 
+  int command = SPI.transfer(registerName); 
   // send a value of 0 to read the first byte returned:
-  inByte = SPI.send(0x00); 
+  inByte = SPI.transfer(0x00); 
 
   result = inByte;
   // if there's more than one byte returned, 
   // shift the first byte then get the second byte:
   if (numBytes > 1){
     result = inByte << 8;
-    inByte = SPI.send(0x00); 
+    inByte = SPI.transfer(0x00); 
     result = result |inByte;
   }
   // take the chip select high to de-select:

utility/w5100.cpp

@@ -118,10 +118,10 @@ void W5100Class::read_data(SOCKET s, volatile uint8_t *src, volatile uint8_t *ds
 uint8_t W5100Class::write(uint16_t _addr, uint8_t _data)
 {
   setSS();  
-  SPI.send(0xF0);
-  SPI.send(_addr >> 8);
-  SPI.send(_addr & 0xFF);
-  SPI.send(_data);
+  SPI.transfer(0xF0);
+  SPI.transfer(_addr >> 8);
+  SPI.transfer(_addr & 0xFF);
+  SPI.transfer(_data);
   resetSS();
   return 1;
 }
@@ -131,11 +131,11 @@ uint16_t W5100Class::write(uint16_t _addr, uint8_t *_buf, uint16_t _len)
   for (int i=0; i<_len; i++)
   {
     setSS();    
-    SPI.send(0xF0);
-    SPI.send(_addr >> 8);
-    SPI.send(_addr & 0xFF);
+    SPI.transfer(0xF0);
+    SPI.transfer(_addr >> 8);
+    SPI.transfer(_addr & 0xFF);
     _addr++;
-    SPI.send(_buf[i]);
+    SPI.transfer(_buf[i]);
     resetSS();
   }
   return _len;
@@ -144,10 +144,10 @@ uint16_t W5100Class::write(uint16_t _addr, uint8_t *_buf, uint16_t _len)
 uint8_t W5100Class::read(uint16_t _addr)
 {
   setSS();  
-  SPI.send(0x0F);
-  SPI.send(_addr >> 8);
-  SPI.send(_addr & 0xFF);
-  uint8_t _data = SPI.send(0);
+  SPI.transfer(0x0F);
+  SPI.transfer(_addr >> 8);
+  SPI.transfer(_addr & 0xFF);
+  uint8_t _data = SPI.transfer(0);
   resetSS();
   return _data;
 }
@@ -157,11 +157,11 @@ uint16_t W5100Class::read(uint16_t _addr, uint8_t *_buf, uint16_t _len)
   for (int i=0; i<_len; i++)
   {
     setSS();
-    SPI.send(0x0F);
-    SPI.send(_addr >> 8);
-    SPI.send(_addr & 0xFF);
+    SPI.transfer(0x0F);
+    SPI.transfer(_addr >> 8);
+    SPI.transfer(_addr & 0xFF);
     _addr++;
-    _buf[i] = SPI.send(0);
+    _buf[i] = SPI.transfer(0);
     resetSS();
   }
   return _len;