LPC176x: Expand HW SPI class

Marlin/src/HAL/HAL_LPC1768/HAL_spi.cpp

@@ -150,7 +150,7 @@
   }
 
   void spiInit(uint8_t spiRate) {
-
+    SSP_Cmd(LPC_SSP0, DISABLE); // Disable SSP0 before changing rate
     // table to convert Marlin spiRates (0-5 plus default) into bit rates
     uint32_t Marlin_speed[7]; // CPSR is always 2
     Marlin_speed[0] = 8333333; //(SCR:  2)  desired: 8,000,000  actual: 8,333,333  +4.2%  SPI_FULL_SPEED
@@ -242,6 +242,21 @@
 
 void SPIClass::begin() { spiBegin(); }
 
+void SPIClass::beginTransaction(SPISettings cfg) {
+  uint8_t spiRate;
+  switch(cfg.spiRate()) {
+    case 8000000: spiRate=0 ;break;
+    case 4000000: spiRate=1 ;break;
+    case 2000000: spiRate=2 ;break;
+    case 1000000: spiRate=3 ;break;
+    case  500000: spiRate=4 ;break;
+    case  250000: spiRate=5 ;break;
+    case  125000: spiRate=6 ;break;
+    default: spiRate=2; break;
+  }
+  spiInit(spiRate);
+}
+
 uint8_t SPIClass::transfer(uint8_t B) {
   return spiTransfer(B);
 }

Marlin/src/HAL/HAL_LPC1768/include/HardwareSerial.h

@@ -23,9 +23,9 @@
 #ifndef HARDWARE_SERIAL_H_
 #define HARDWARE_SERIAL_H_
 
-#include "../../inc/MarlinConfigPre.h"
+#include "../../../inc/MarlinConfigPre.h"
 #if ENABLED(EMERGENCY_PARSER)
-  #include "../../feature/emergency_parser.h"
+  #include "../../../feature/emergency_parser.h"
 #endif
 
 #include <stdarg.h>

Marlin/src/HAL/HAL_LPC1768/include/SPI.h

@@ -31,13 +31,16 @@
 
 class SPISettings {
   public:
-    SPISettings(int a, int b, int c) {};
+    SPISettings(uint32_t speed, int, int) : spi_speed(speed) {};
+    uint32_t spiRate() { return spi_speed; }
+  private:
+    uint32_t spi_speed;
 };
 
 class SPIClass {
   public:
     void begin();
-    void beginTransaction(SPISettings foo) {};
+    void beginTransaction(SPISettings);
     void endTransaction() {};
     uint8_t transfer(uint8_t data);
     uint16_t transfer16(uint16_t data);

Marlin/src/HAL/HAL_LPC1768/include/SoftwareSerial.cpp

@@ -36,8 +36,8 @@
 // Includes
 //
 //#include <WInterrupts.h>
-#include "../../inc/MarlinConfig.h"
+#include "../../../inc/MarlinConfig.h"
-#include "../Delay.h"
+#include "../../Delay.h"
 #include <stdint.h>
 #include <stdarg.h>
 #include <Arduino.h>