1 files changed, 98 insertions, 0 deletions
diff --git a/Marlin/src/feature/dac/dac_dac084s085.cpp b/Marlin/src/feature/dac/dac_dac084s085.cpp
new file mode 100644
index 0000000..649aa55
--- /dev/null
+++ b/Marlin/src/feature/dac/dac_dac084s085.cpp
@@ -0,0 +1,98 @@
+/***************************************************************
+ *
+ * External DAC for Alligator Board
+ *
+ ****************************************************************/
+
+#include "../../inc/MarlinConfig.h"
+
+#if MB(ALLIGATOR)
+
+#include "dac_dac084s085.h"
+
+#include "../../MarlinCore.h"
+#include "../../module/stepper.h"
+#include "../../HAL/shared/Delay.h"
+
+dac084s085::dac084s085() { }
+
+void dac084s085::begin() {
+  uint8_t externalDac_buf[] = { 0x20, 0x00 }; // all off
+
+  // All SPI chip-select HIGH
+  SET_OUTPUT(DAC0_SYNC);
+  #if HAS_MULTI_EXTRUDER
+    SET_OUTPUT(DAC1_SYNC);
+  #endif
+  cshigh();
+  spiBegin();
+
+  //init onboard DAC
+  DELAY_US(2);
+  WRITE(DAC0_SYNC, LOW);
+  DELAY_US(2);
+  WRITE(DAC0_SYNC, HIGH);
+  DELAY_US(2);
+  WRITE(DAC0_SYNC, LOW);
+
+  spiSend(SPI_CHAN_DAC, externalDac_buf, COUNT(externalDac_buf));
+  WRITE(DAC0_SYNC, HIGH);
+
+  #if HAS_MULTI_EXTRUDER
+    //init Piggy DAC
+    DELAY_US(2);
+    WRITE(DAC1_SYNC, LOW);
+    DELAY_US(2);
+    WRITE(DAC1_SYNC, HIGH);
+    DELAY_US(2);
+    WRITE(DAC1_SYNC, LOW);
+
+    spiSend(SPI_CHAN_DAC, externalDac_buf, COUNT(externalDac_buf));
+    WRITE(DAC1_SYNC, HIGH);
+  #endif
+
+  return;
+}
+
+void dac084s085::setValue(const uint8_t channel, const uint8_t value) {
+  if (channel >= 7) return; // max channel (X,Y,Z,E0,E1,E2,E3)
+
+  const uint8_t externalDac_buf[] = {
+    0x10 | ((channel > 3 ? 7 : 3) - channel << 6) | (value >> 4),
+    0x00 | (value << 4)
+  };
+
+  // All SPI chip-select HIGH
+  cshigh();
+
+  if (channel > 3) {        // DAC Piggy E1,E2,E3
+    WRITE(DAC1_SYNC, LOW);
+    DELAY_US(2);
+    WRITE(DAC1_SYNC, HIGH);
+    DELAY_US(2);
+    WRITE(DAC1_SYNC, LOW);
+  }
+  else {                    // DAC onboard X,Y,Z,E0
+    WRITE(DAC0_SYNC, LOW);
+    DELAY_US(2);
+    WRITE(DAC0_SYNC, HIGH);
+    DELAY_US(2);
+    WRITE(DAC0_SYNC, LOW);
+  }
+
+  DELAY_US(2);
+  spiSend(SPI_CHAN_DAC, externalDac_buf, COUNT(externalDac_buf));
+}
+
+void dac084s085::cshigh() {
+  WRITE(DAC0_SYNC, HIGH);
+  #if HAS_MULTI_EXTRUDER
+    WRITE(DAC1_SYNC, HIGH);
+  #endif
+  WRITE(SPI_EEPROM1_CS, HIGH);
+  WRITE(SPI_EEPROM2_CS, HIGH);
+  WRITE(SPI_FLASH_CS, HIGH);
+  WRITE(SD_SS_PIN, HIGH);
+}
+
+#endif // MB(ALLIGATOR)