Remove (for now) mismapped SPI pins

Author: multiplemonomials

drivers/include/drivers/SerialBase.h

@@ -69,8 +69,22 @@ class SerialBase : private NonCopyable<SerialBase> {
 
     enum Flow {
         Disabled = 0,
+
+        /// RS-232-E RTS flow control. This is used to prevent the other end of the connection from sending more
+        /// bytes than the Mbed MCU can process.
+        /// When this flow control is active, the RTS signal will normally be asserted (low),
+        /// but will go deasserted (high) if the Mbed MCU might not have Rx buffer space to store another byte.
+        /// Note that in this configuration the RTS signal actually operates as a "ready to receive" (RTR) output,
+        /// not a true RTS.
         RTS,
+
+        /// RS-232 CTS flow control. This is used to prevent the Mbed MCU from sending more bytes than the
+        /// other end of the connection can process.
+        /// When this flow control is active, the CTS pin will be sampled after transmitting each byte, and if
+        /// if is deasserted (high), transmission will pause until it becomes asserted (low) again.
         CTS,
+
+        /// Combination of RTS and CTS flow control as previously defined.
         RTSCTS
     };
 

targets/TARGET_NXP/TARGET_MCUXpresso_MCUS/TARGET_MCU_LPC546XX/TARGET_FF_LPC546XX/PeripheralPins.c

@@ -97,14 +97,12 @@ const PinMap PinMap_SPI_SCLK[] = {
 const PinMap PinMap_SPI_MOSI[] = {
     {P1_5,  SPI_0, 1},
     {P1_24, SPI_2, 1},
-    {P0_8,  SPI_3, 1},
     {NC   , NC   , 0}
 };
 
 const PinMap PinMap_SPI_MISO[] = {
     {P1_6,  SPI_0, 1},
     {P1_25, SPI_2, 1},
-    {P0_9,  SPI_3, 1},
     {NC   , NC   , 0}
 };