105 lines
3.0 KiB
C++
105 lines
3.0 KiB
C++
/**
|
|
* Marlin 3D Printer Firmware
|
|
* Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
|
|
*
|
|
* Based on Sprinter and grbl.
|
|
* Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
*/
|
|
|
|
/**
|
|
* stepper_dac.cpp - To set stepper current via DAC
|
|
*/
|
|
|
|
#include "../../inc/MarlinConfig.h"
|
|
|
|
#if ENABLED(DAC_STEPPER_CURRENT)
|
|
|
|
#include "stepper_dac.h"
|
|
|
|
bool dac_present = false;
|
|
const uint8_t dac_order[NUM_AXIS] = DAC_STEPPER_ORDER;
|
|
uint8_t dac_channel_pct[XYZE] = DAC_MOTOR_CURRENT_DEFAULT;
|
|
|
|
int dac_init() {
|
|
#if PIN_EXISTS(DAC_DISABLE)
|
|
OUT_WRITE(DAC_DISABLE_PIN, LOW); // set pin low to enable DAC
|
|
#endif
|
|
|
|
mcp4728_init();
|
|
|
|
if (mcp4728_simpleCommand(RESET)) return -1;
|
|
|
|
dac_present = true;
|
|
|
|
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;
|
|
}
|
|
|
|
void dac_current_percent(uint8_t channel, float val) {
|
|
if (!dac_present) return;
|
|
|
|
NOMORE(val, 100);
|
|
|
|
mcp4728_analogWrite(dac_order[channel], val * 0.01 * (DAC_STEPPER_MAX));
|
|
mcp4728_simpleCommand(UPDATE);
|
|
}
|
|
|
|
void dac_current_raw(uint8_t channel, uint16_t val) {
|
|
if (!dac_present) return;
|
|
|
|
NOMORE(val, DAC_STEPPER_MAX);
|
|
|
|
mcp4728_analogWrite(dac_order[channel], val);
|
|
mcp4728_simpleCommand(UPDATE);
|
|
}
|
|
|
|
static float dac_perc(int8_t n) { return 100.0 * mcp4728_getValue(dac_order[n]) * RECIPROCAL(DAC_STEPPER_MAX); }
|
|
static float dac_amps(int8_t n) { return mcp4728_getDrvPct(dac_order[n]) * (DAC_STEPPER_MAX) * 0.125 * RECIPROCAL(DAC_STEPPER_SENSE); }
|
|
|
|
uint8_t dac_current_get_percent(AxisEnum axis) { return mcp4728_getDrvPct(dac_order[axis]); }
|
|
void dac_current_set_percents(const uint8_t pct[XYZE]) {
|
|
LOOP_XYZE(i) dac_channel_pct[i] = pct[dac_order[i]];
|
|
mcp4728_setDrvPct(dac_channel_pct);
|
|
}
|
|
|
|
void dac_print_values() {
|
|
if (!dac_present) return;
|
|
|
|
SERIAL_ECHO_MSG("Stepper current values in % (Amps):");
|
|
SERIAL_ECHO_START();
|
|
SERIAL_ECHOLNPAIR(
|
|
" X:", dac_perc(X_AXIS), " (", dac_amps(X_AXIS), ")"
|
|
" Y:", dac_perc(Y_AXIS), " (", dac_amps(Y_AXIS), ")"
|
|
" Z:", dac_perc(Z_AXIS), " (", dac_amps(Z_AXIS), ")"
|
|
" E:", dac_perc(E_AXIS), " (", dac_amps(E_AXIS), ")"
|
|
);
|
|
}
|
|
|
|
void dac_commit_eeprom() {
|
|
if (!dac_present) return;
|
|
mcp4728_eepromWrite();
|
|
}
|
|
|
|
#endif // DAC_STEPPER_CURRENT
|