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Implement digipots for MKS SBASE (#9927)

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Fix #9477
This commit is contained in:
Scott Lahteine
2018-03-04 15:14:47 -06:00
committed by GitHub
parent 07ae23fe14
commit beeed580b8
3 changed files with 95 additions and 49 deletions
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26
Marlin/src/feature/digipot/digipot_mcp4451.cpp
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@ -27,6 +27,10 @@
#include "Stream.h"
#include <Wire.h>
#if MB(MKS_SBASE)
#include "digipot_mcp4451_I2C_routines.h"
#endif
// Settings for the I2C based DIGIPOT (MCP4451) on Azteeg X3 Pro
#if MB(5DPRINT)
#define DIGIPOT_I2C_FACTOR 117.96
@ -41,10 +45,16 @@ static byte current_to_wiper(const float current) {
}
static void i2c_send(const byte addr, const byte a, const byte b) {
Wire.beginTransmission(addr);
Wire.write(a);
Wire.write(b);
Wire.endTransmission();
#if MB(MKS_SBASE)
digipot_mcp4451_start(addr);
digipot_mcp4451_send_byte(a);
digipot_mcp4451_send_byte(b);
#else
Wire.beginTransmission(addr);
Wire.write(a);
Wire.write(b);
Wire.endTransmission();
#endif
}
// This is for the MCP4451 I2C based digipot
@ -63,9 +73,13 @@ void digipot_i2c_set_current(const uint8_t channel, const float current) {
}
void digipot_i2c_init() {
static const float digipot_motor_current[] PROGMEM = DIGIPOT_I2C_MOTOR_CURRENTS;
Wire.begin();
#if MB(MKS_SBASE)
digipot_mcp4451_init();
#else
Wire.begin();
#endif
// setup initial currents as defined in Configuration_adv.h
static const float digipot_motor_current[] PROGMEM = DIGIPOT_I2C_MOTOR_CURRENTS;
for (uint8_t i = 0; i < COUNT(digipot_motor_current); i++)
digipot_i2c_set_current(i, pgm_read_float(&digipot_motor_current[i]));
}