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- #include "dac_mcp4728.h"
- #include "enum.h"
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- #if ENABLED(DAC_STEPPER_CURRENT)
-
- uint16_t mcp4728_values[XYZE];
-
-
- void mcp4728_init() {
- Wire.begin();
- Wire.requestFrom(int(DAC_DEV_ADDRESS), 24);
- while (Wire.available()) {
- char deviceID = Wire.read(),
- hiByte = Wire.read(),
- loByte = Wire.read();
-
- if (!(deviceID & 0x08))
- mcp4728_values[(deviceID & 0x30) >> 4] = word((hiByte & 0x0F), loByte);
- }
- }
-
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- uint8_t mcp4728_analogWrite(uint8_t channel, uint16_t value) {
- mcp4728_values[channel] = value;
- return mcp4728_fastWrite();
- }
-
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- uint8_t mcp4728_eepromWrite() {
- Wire.beginTransmission(DAC_DEV_ADDRESS);
- Wire.write(SEQWRITE);
- LOOP_XYZE(i) {
- Wire.write(DAC_STEPPER_VREF << 7 | DAC_STEPPER_GAIN << 4 | highByte(mcp4728_values[i]));
- Wire.write(lowByte(mcp4728_values[i]));
- }
- return Wire.endTransmission();
- }
-
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- uint8_t mcp4728_setVref_all(uint8_t value) {
- Wire.beginTransmission(DAC_DEV_ADDRESS);
- Wire.write(VREFWRITE | (value ? 0x0F : 0x00));
- return Wire.endTransmission();
- }
-
- uint8_t mcp4728_setGain_all(uint8_t value) {
- Wire.beginTransmission(DAC_DEV_ADDRESS);
- Wire.write(GAINWRITE | (value ? 0x0F : 0x00));
- return Wire.endTransmission();
- }
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- uint16_t mcp4728_getValue(uint8_t channel) { return mcp4728_values[channel]; }
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- uint16_t mcp4728_getDrvPct(uint8_t channel) { return uint16_t(100.0 * mcp4728_values[channel] / (DAC_STEPPER_MAX) + 0.5); }
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- void mcp4728_setDrvPct(uint16_t pct[XYZE]) {
- LOOP_XYZE(i) mcp4728_values[i] = 0.01 * pct[i] * (DAC_STEPPER_MAX);
- mcp4728_fastWrite();
- }
-
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- uint8_t mcp4728_fastWrite() {
- Wire.beginTransmission(DAC_DEV_ADDRESS);
- LOOP_XYZE(i) {
- Wire.write(highByte(mcp4728_values[i]));
- Wire.write(lowByte(mcp4728_values[i]));
- }
- return Wire.endTransmission();
- }
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- uint8_t mcp4728_simpleCommand(byte simpleCommand) {
- Wire.beginTransmission(GENERALCALL);
- Wire.write(simpleCommand);
- return Wire.endTransmission();
- }
-
- #endif
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