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Add support for RC ESC based spindles

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- Change spindle_stop() off value from 0 to SPINDLE_PWM_OFF_VALUE
- Add example cpu_map.h  CPU_MAP_ESP32_ESC_SPINDLE
This commit is contained in:
bdring
2019-05-17 09:29:43 -05:00
parent 6110ad690f
commit 310f2e0dfa
3 changed files with 81 additions and 5 deletions
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82
Grbl_Esp32/cpu_map.h
View File

@@ -85,6 +85,8 @@
#define SPINDLE_PWM_MIN_VALUE 1 // Must be greater than zero.
#endif
#define SPINDLE_ENABLE_PIN GPIO_NUM_22
#define SPINDLE_PWM_RANGE (SPINDLE_PWM_MAX_VALUE-SPINDLE_PWM_MIN_VALUE)
// if these spindle function pins are defined, they will be activated in the code
@@ -105,6 +107,80 @@
#define CONTROL_CYCLE_START_PIN GPIO_NUM_39 // needs external pullup
#endif
#ifdef CPU_MAP_ESP32_ESC_SPINDLE
// This is the CPU Map for the ESP32 CNC Controller R2
// It is OK to comment out any step and direction pins. This
// won't affect operation except that there will be no output
// form the pins. Grbl will virtually move the axis. This could
// be handy if you are using a servo, etc. for another axis.
#define CPU_MAP_NAME "CPU_MAP_ESP32"
#define X_STEP_PIN GPIO_NUM_12
#define X_DIRECTION_PIN GPIO_NUM_26
#define X_RMT_CHANNEL 0
#define Y_STEP_PIN GPIO_NUM_14
#define Y_DIRECTION_PIN GPIO_NUM_25
#define Y_RMT_CHANNEL 1
#define Z_STEP_PIN GPIO_NUM_27
#define Z_DIRECTION_PIN GPIO_NUM_33
#define Z_RMT_CHANNEL 2
// OK to comment out to use pin for other features
#define STEPPERS_DISABLE_PIN GPIO_NUM_13
// *** the flood coolant feature code is activated by defining this pins
// *** Comment it out to use the pin for other features
#define COOLANT_FLOOD_PIN GPIO_NUM_16
//#define COOLANT_MIST_PIN GPIO_NUM_21
// If SPINDLE_PWM_PIN is commented out, this frees up the pin, but Grbl will still
// use a virtual spindle. Do not comment out the other parameters for the spindle.
#define SPINDLE_PWM_PIN GPIO_NUM_17
#define SPINDLE_PWM_CHANNEL 0
// RC ESC Based Spindle
// An ESC works like a hobby servo with 50Hz PWM 1ms to 2 ms pulse range
#define SPINDLE_PWM_BASE_FREQ 50 // Hz for ESC
#define SPINDLE_PWM_BIT_PRECISION 16 // 16 bit required for ESC
#define SPINDLE_PULSE_RES_COUNT 65535
#define ESC_MIN_PULSE_SEC 0.001 // min pulse in seconds (OK to tune this one)
#define ESC_MAX_PULSE_SEC 0.002 // max pulse in seconds (OK to tune this one)
#define ESC_TIME_PER_BIT ((1.0 / (float)SPINDLE_PWM_BASE_FREQ) / ((float)SPINDLE_PULSE_RES_COUNT) ) // seconds
#define SPINDLE_PWM_OFF_VALUE (uint16_t)(SERVO_MIN_PULSE_SEC / SERVO_TIME_PER_BIT) // in timer counts
#define SPINDLE_PWM_MAX_VALUE (uint16_t)(SERVO_MAX_PULSE_SEC / SERVO_TIME_PER_BIT) // in timer counts
#ifndef SPINDLE_PWM_MIN_VALUE
#define SPINDLE_PWM_MIN_VALUE SPINDLE_PWM_OFF_VALUE // Must be greater than zero.
#endif
#define SPINDLE_PWM_RANGE (SPINDLE_PWM_MAX_VALUE-SPINDLE_PWM_MIN_VALUE)
#define SPINDLE_ENABLE_PIN GPIO_NUM_22
// if these spindle function pins are defined, they will be activated in the code
// comment them out to use the pins for other functions
//#define SPINDLE_ENABLE_PIN GPIO_NUM_16
//#define SPINDLE_DIR_PIN GPIO_NUM_16
#define X_LIMIT_PIN GPIO_NUM_2
#define Y_LIMIT_PIN GPIO_NUM_4
#define Z_LIMIT_PIN GPIO_NUM_15
#define LIMIT_MASK B111
#define PROBE_PIN GPIO_NUM_32
#define CONTROL_SAFETY_DOOR_PIN GPIO_NUM_35 // needs external pullup
#define CONTROL_RESET_PIN GPIO_NUM_34 // needs external pullup
#define CONTROL_FEED_HOLD_PIN GPIO_NUM_36 // needs external pullup
#define CONTROL_CYCLE_START_PIN GPIO_NUM_39 // needs external pullup
#endif
#ifdef CPU_MAP_PEN_LASER // The Buildlog.net pen laser controller V1
@@ -709,7 +785,7 @@
#define USE_SPINDLE_RELAY
#ifdef USE_SPINDLE_RELAY
#define SPINDLE_PWM_PIN GPIO_NUM_17
#define SPINDLE_PWM_PIN GPIO_NUM_2
#else
#define SPINDLE_PWM_PIN GPIO_NUM_16
#define SPINDLE_ENABLE_PIN GPIO_NUM_32
@@ -736,7 +812,7 @@
// Relay can be used for Spindle or Coolant
//#define COOLANT_FLOOD_PIN GPIO_NUM_17
#define X_LIMIT_PIN GPIO_NUM_2
#define X_LIMIT_PIN GPIO_NUM_17
#define Y_LIMIT_PIN GPIO_NUM_4
#define Z_LIMIT_PIN GPIO_NUM_15
#define LIMIT_MASK B111
@@ -785,7 +861,7 @@
// Note: if you use PWM rather than relay, you could map GPIO_NUM_17 to mist or flood
//#define USE_SPINDLE_RELAY
#define USE_SPINDLE_RELAY
#ifdef USE_SPINDLE_RELAY
#define SPINDLE_PWM_PIN GPIO_NUM_17

2
Grbl_Esp32/grbl.h
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@@ -20,7 +20,7 @@
// Grbl versioning system
#define GRBL_VERSION "1.1f"
#define GRBL_VERSION_BUILD "20180917"
#define GRBL_VERSION_BUILD "20190517"
//#include <sdkconfig.h>
#include <Arduino.h>

2
Grbl_Esp32/spindle_control.cpp
View File

@@ -49,7 +49,7 @@ void spindle_stop()
{
spindle_set_enable(false);
#ifdef SPINDLE_PWM_PIN
grbl_analogWrite(SPINDLE_PWM_CHANNEL, 0);
grbl_analogWrite(SPINDLE_PWM_CHANNEL, SPINDLE_PWM_OFF_VALUE);
#endif
}