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Fix DAC current code #5036

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merged 1 commit into from
Oct 17, 2016
Merged

Fix DAC current code #5036

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15 changes: 8 additions & 7 deletions Marlin/dac_mcp4728.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -31,6 +31,7 @@
*/

#include "dac_mcp4728.h"
#include "enum.h"

#if ENABLED(DAC_STEPPER_CURRENT)

Expand Down Expand Up @@ -69,9 +70,9 @@ uint8_t mcp4728_analogWrite(uint8_t channel, uint16_t value) {
uint8_t mcp4728_eepromWrite() {
Wire.beginTransmission(DAC_DEV_ADDRESS);
Wire.write(SEQWRITE);
for (uint8_t channel = 0; channel < COUNT(mcp4728_values); channel++) {
Wire.write(DAC_STEPPER_VREF << 7 | DAC_STEPPER_GAIN << 4 | highByte(mcp4728_values[channel]));
Wire.write(lowByte(mcp4728_values[channel]));
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();
}
Expand Down Expand Up @@ -119,7 +120,7 @@ uint16_t mcp4728_getDrvPct(uint8_t channel) { return uint16_t(100.0 * mcp4728_va
* Receives all Drive strengths as 0-100 percent values, updates
* DAC Values array and calls fastwrite to update the DAC.
*/
void mcp4728_setDrvPct(int16_t pct[XYZE]) {
void mcp4728_setDrvPct(uint16_t pct[XYZE]) {
LOOP_XYZE(i) mcp4728_values[i] = 0.01 * pct[i] * (DAC_STEPPER_MAX);
mcp4728_fastWrite();
}
Expand All @@ -131,9 +132,9 @@ void mcp4728_setDrvPct(int16_t pct[XYZE]) {
*/
uint8_t mcp4728_fastWrite() {
Wire.beginTransmission(DAC_DEV_ADDRESS);
for (uint8_t channel = 0; channel < COUNT(mcp4728_values); channel++) {
Wire.write(highByte(mcp4728_values[channel]));
Wire.write(lowByte(mcp4728_values[channel]));
LOOP_XYZE(i) {
Wire.write(highByte(mcp4728_values[i]));
Wire.write(lowByte(mcp4728_values[i]));
}
return Wire.endTransmission();
}
Expand Down
2 changes: 1 addition & 1 deletion Marlin/dac_mcp4728.h
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Original file line number Diff line number Diff line change
Expand Up @@ -60,7 +60,7 @@ uint16_t mcp4728_getValue(uint8_t channel);
uint8_t mcp4728_fastWrite();
uint8_t mcp4728_simpleCommand(byte simpleCommand);
uint16_t mcp4728_getDrvPct(uint8_t channel);
void mcp4728_setDrvPct(int16_t pct[XYZE]);
void mcp4728_setDrvPct(uint16_t pct[XYZE]);

#endif
#endif // DAC_MCP4728_H