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109 lines
2.7 KiB
C++
109 lines
2.7 KiB
C++
8 years ago
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/***************************************************************
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*
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* External DAC for Alligator Board
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*
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****************************************************************/
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#include "Marlin.h"
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#if MB(ALLIGATOR)
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#include "stepper.h"
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#include "dac_dac084s085.h"
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dac084s085::dac084s085() {
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return ;
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}
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void dac084s085::begin() {
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uint8_t externalDac_buf[2] = {0x20,0x00};//all off
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// All SPI chip-select HIGH
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pinMode (DAC0_SYNC, OUTPUT);
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digitalWrite( DAC0_SYNC , HIGH );
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#if EXTRUDERS > 1
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pinMode (DAC1_SYNC, OUTPUT);
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digitalWrite( DAC1_SYNC , HIGH );
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#endif
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digitalWrite( SPI_EEPROM1_CS , HIGH );
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digitalWrite( SPI_EEPROM2_CS , HIGH );
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digitalWrite( SPI_FLASH_CS , HIGH );
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digitalWrite( SS_PIN , HIGH );
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spiBegin();
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//init onboard DAC
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delayMicroseconds(2U);
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digitalWrite( DAC0_SYNC , LOW );
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delayMicroseconds(2U);
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digitalWrite( DAC0_SYNC , HIGH );
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delayMicroseconds(2U);
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digitalWrite( DAC0_SYNC , LOW );
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spiSend(SPI_CHAN_DAC,externalDac_buf , 2);
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digitalWrite( DAC0_SYNC , HIGH );
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#if EXTRUDERS > 1
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//init Piggy DAC
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delayMicroseconds(2U);
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digitalWrite( DAC1_SYNC , LOW );
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delayMicroseconds(2U);
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digitalWrite( DAC1_SYNC , HIGH );
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delayMicroseconds(2U);
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digitalWrite( DAC1_SYNC , LOW );
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spiSend(SPI_CHAN_DAC,externalDac_buf , 2);
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digitalWrite( DAC1_SYNC , HIGH );
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#endif
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return;
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}
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void dac084s085::setValue(uint8_t channel, uint8_t value) {
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if(channel >= 7) // max channel (X,Y,Z,E0,E1,E2,E3)
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return;
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if(value > 255) value = 255;
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uint8_t externalDac_buf[2] = {0x10,0x00};
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if(channel > 3)
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externalDac_buf[0] |= (7 - channel << 6);
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else
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externalDac_buf[0] |= (3 - channel << 6);
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externalDac_buf[0] |= (value>>4);
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externalDac_buf[1] |= (value<<4);
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// All SPI chip-select HIGH
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digitalWrite( DAC0_SYNC , HIGH );
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#if EXTRUDERS > 1
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digitalWrite( DAC1_SYNC , HIGH );
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#endif
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digitalWrite( SPI_EEPROM1_CS , HIGH );
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digitalWrite( SPI_EEPROM2_CS , HIGH );
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digitalWrite( SPI_FLASH_CS , HIGH );
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digitalWrite( SS_PIN , HIGH );
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if(channel > 3) { // DAC Piggy E1,E2,E3
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digitalWrite(DAC1_SYNC , LOW);
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delayMicroseconds(2U);
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digitalWrite(DAC1_SYNC , HIGH);
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delayMicroseconds(2U);
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digitalWrite(DAC1_SYNC , LOW);
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}
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else { // DAC onboard X,Y,Z,E0
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digitalWrite(DAC0_SYNC , LOW);
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delayMicroseconds(2U);
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digitalWrite(DAC0_SYNC , HIGH);
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delayMicroseconds(2U);
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digitalWrite(DAC0_SYNC , LOW);
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}
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delayMicroseconds(2U);
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spiSend(SPI_CHAN_DAC,externalDac_buf , 2);
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return;
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}
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#endif
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