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Default DAC Values #5744

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jaysonkelly wants to merge 3 commits into from
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Default DAC Values #5744

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23dbd9f
defaults for drive strength
jaysonkelly Jan 22, 2017
c993f1d
Initialize DAC values if they are empty
jaysonkelly Jan 22, 2017
63e4cba
Fix Typo
jaysonkelly Jan 24, 2017
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1 change: 1 addition & 0 deletions Marlin/pins_RIGIDBOARD_V2.h
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Original file line number Diff line number Diff line change
Expand Up @@ -44,3 +44,4 @@
#define DAC_STEPPER_GAIN 1 // value of 1 here sets gain of 2
#define DAC_DISABLE_PIN 42 // set low to enable DAC
#define DAC_OR_ADDRESS 0x01
#define DAC_STEPPER_DFLT { 70, 80, 90, 80 } // Default values for drive strength percent
7 changes: 6 additions & 1 deletion Marlin/stepper_dac.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -49,7 +49,7 @@

bool dac_present = false;
const uint8_t dac_order[NUM_AXIS] = DAC_STEPPER_ORDER;
uint16_t dac_channel_pct[XYZE];
uint16_t dac_channel_pct[XYZE] = DAC_STEPPER_DFLT;

int dac_init() {
#if PIN_EXISTS(DAC_DISABLE)
Expand All @@ -64,6 +64,11 @@

mcp4728_setVref_all(DAC_STEPPER_VREF);
mcp4728_setGain_all(DAC_STEPPER_GAIN);

if (mcp4728_getDrvPct(0) < 1 || mcp4728_getDrvPct(1) < 1 || mcp4728_getDrvPct(2) < 1 || mcp4728_getDrvPct(3) < 1 ) {
mcp4728_setDrvPct(dac_channel_pct);
mcp4728_eepromWrite();
}

return 0;
}
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