HAL for 32-bit Teensy (3.5, 3.6) architecture

Marlin/src/HAL/HAL_TEENSY35_36/HAL_spi_Teensy.cpp

@@ -0,0 +1,104 @@
+#if defined(__MK64FX512__) || defined(__MK66FX1M0__)
+
+#include "../HAL.h"
+#include <SPI.h>
+#include <pins_arduino.h>
+#include "spi_pins.h"
+#include "../../../macros.h"
+
+static SPISettings spiConfig;
+
+// Standard SPI functions
+/** Initialise SPI bus */
+void spiBegin(void) {
+  #ifndef SS_PIN
+    #error SS_PIN not defined!
+  #endif
+  SET_OUTPUT(SS_PIN);
+  WRITE(SS_PIN, HIGH);
+  SET_OUTPUT(SCK_PIN);
+  SET_INPUT(MISO_PIN);
+  SET_OUTPUT(MOSI_PIN);
+
+  //#if DISABLED(SOFTWARE_SPI)
+  #if false
+    // set SS high - may be chip select for another SPI device
+    #if SET_SPI_SS_HIGH
+      WRITE(SS_PIN, HIGH);
+    #endif  // SET_SPI_SS_HIGH
+    // set a default rate
+    spiInit(SPI_HALF_SPEED); // 1
+  #endif  // SOFTWARE_SPI
+}
+
+/** Configure SPI for specified SPI speed */
+void spiInit(uint8_t spiRate) {
+	// Use datarates Marlin uses
+	uint32_t clock;
+	switch (spiRate) {
+  case SPI_FULL_SPEED:		clock = 10000000;	break;
+  case SPI_HALF_SPEED:		clock =  5000000;	break;
+  case SPI_QUARTER_SPEED:	clock =  2500000;	break;
+  case SPI_EIGHTH_SPEED:	clock =  1250000;	break;
+  case SPI_SPEED_5:				clock =   625000;	break;
+  case SPI_SPEED_6:				clock =   312500;	break;
+  default:
+		clock = 4000000; // Default from the SPI libarary
+	}
+	spiConfig = SPISettings(clock, MSBFIRST, SPI_MODE0);
+	SPI.begin();
+}
+
+//------------------------------------------------------------------------------
+/** SPI receive a byte */
+uint8_t spiRec(void) {
+  SPI.beginTransaction(spiConfig);
+  uint8_t returnByte = SPI.transfer(0xFF);
+  SPI.endTransaction();
+  return returnByte;
+//  SPDR = 0XFF;
+//  while (!TEST(SPSR, SPIF)) { /* Intentionally left empty */ }
+//  return SPDR;
+}
+//------------------------------------------------------------------------------
+/** SPI read data  */
+void spiRead(uint8_t* buf, uint16_t nbyte) {
+  SPI.beginTransaction(spiConfig);
+  SPI.transfer(buf, nbyte);
+  SPI.endTransaction();
+//if (nbyte-- == 0) return;
+//  SPDR = 0XFF;
+//for (uint16_t i = 0; i < nbyte; i++) {
+//  while (!TEST(SPSR, SPIF)) { /* Intentionally left empty */ }
+//  buf[i] = SPDR;
+//  SPDR = 0XFF;
+//}
+//while (!TEST(SPSR, SPIF)) { /* Intentionally left empty */ }
+//buf[nbyte] = SPDR;
+}
+//------------------------------------------------------------------------------
+/** SPI send a byte */
+void spiSend(uint8_t b) {
+  SPI.beginTransaction(spiConfig);
+  SPI.transfer(b);
+  SPI.endTransaction();
+//  SPDR = b;
+//  while (!TEST(SPSR, SPIF)) { /* Intentionally left empty */ }
+}
+//------------------------------------------------------------------------------
+/** SPI send block  */
+void spiSendBlock(uint8_t token, const uint8_t* buf) {
+  SPI.beginTransaction(spiConfig);
+  SPDR = token;
+  for (uint16_t i = 0; i < 512; i += 2) {
+    while (!TEST(SPSR, SPIF)) { /* Intentionally left empty */ }
+    SPDR = buf[i];
+    while (!TEST(SPSR, SPIF)) { /* Intentionally left empty */ }
+    SPDR = buf[i + 1];
+  }
+  while (!TEST(SPSR, SPIF)) { /* Intentionally left empty */ }
+  SPI.endTransaction();
+}
+
+
+#endif