From 7295191f59472bd35ef14448d54fc75e79c7228a Mon Sep 17 00:00:00 2001
From: Joseph Coffland <joseph@cauldrondevelopment.com>
Date: Thu, 10 Mar 2016 23:51:26 -0800
Subject: [PATCH] New jog impl

---
 src/plan/jog.c | 114 +++++++++++++++++++++++++++++++++++++++++++++++++
 src/plan/jog.h |   8 ++++
 2 files changed, 122 insertions(+)
 create mode 100644 src/plan/jog.c
 create mode 100644 src/plan/jog.h

diff --git a/src/plan/jog.c b/src/plan/jog.c
new file mode 100644
index 0000000..087f02f
--- /dev/null
+++ b/src/plan/jog.c
@@ -0,0 +1,114 @@
+#include "jog.h"
+#include "planner.h"
+#include "stepper.h"
+#include "canonical_machine.h"
+#include "kinematics.h"
+#include "encoder.h"
+
+#include <stdbool.h>
+#include <math.h>
+#include <string.h>
+#include <stdio.h>
+
+
+typedef struct {
+  bool running;
+  bool writing;
+  float next_velocity[AXES];
+  float target_velocity[AXES];
+  float current_velocity[AXES];
+} jogRuntime_t;
+
+
+static jogRuntime_t jr;
+
+
+static stat_t _exec_jog(mpBuf_t *bf) {
+  if (bf->move_state == MOVE_OFF) return STAT_NOOP;
+  if (bf->move_state == MOVE_NEW) bf->move_state = MOVE_RUN;
+
+  // Load next velocity
+  if (!jr.writing)
+    for (int axis = 0; axis < AXES; axis++)
+      jr.target_velocity[axis] = jr.next_velocity[axis];
+
+  // Compute next line segment
+  float travel[AXES]; // In mm
+  float time = MIN_SEGMENT_TIME; // In minutes
+  float maxDeltaV = JOG_ACCELERATION * time;
+  bool done = true;
+
+  // Compute new velocities and travel
+  for (int axis = 0; axis < AXES; axis++) {
+    float targetV = jr.target_velocity[axis] * cm.a[axis].velocity_max;
+    float deltaV = targetV - jr.current_velocity[axis];
+    float sign = deltaV < 0 ? -1 : 1;
+
+    if (maxDeltaV < fabs(deltaV)) jr.current_velocity[axis] += maxDeltaV * sign;
+    else jr.current_velocity[axis] = targetV;
+
+    // Compute travel from velocity
+    travel[axis] = time * jr.current_velocity[axis];
+
+    if (travel[axis]) done = false;
+  }
+
+  // Check if we are done
+  if (done) {
+    // Update machine position
+    for (uint8_t axis = 0; axis < AXES; axis++) {
+      float steps = en_read_encoder(axis);
+
+      for (int motor = 0; motor < MOTORS; motor++)
+        if (st_cfg.mot[motor].motor_map == axis)
+          cm_set_position(axis, steps / st_cfg.mot[motor].steps_per_unit);
+    }
+
+    // Release queue
+    mp_free_run_buffer();
+
+    jr.running = false;
+
+    return STAT_NOOP;
+  }
+
+  // Convert to steps
+  float steps[MOTORS] = {0};
+  ik_kinematics(travel, steps);
+
+  // Queue segment
+  float error[MOTORS] = {0};
+  st_prep_line(steps, error, time);
+
+  return STAT_OK;
+}
+
+
+void mp_jog(float velocity[AXES]) {
+  // Reset
+  if (!jr.running) memset(&jr, 0, sizeof(jr));
+
+  jr.writing = true;
+  for (int axis = 0; axis < AXES; axis++)
+    jr.next_velocity[axis] = velocity[axis];
+  jr.writing = false;
+
+  if (!jr.running) {
+    // Should always be at least one free buffer
+    mpBuf_t *bf = mp_get_write_buffer();
+    if (!bf) {
+      cm_hard_alarm(STAT_BUFFER_FULL_FATAL);
+      return;
+    }
+
+    // Start
+    jr.running = true;
+    bf->bf_func = _exec_jog; // register callback
+    mp_commit_write_buffer(MOVE_TYPE_JOG);
+  }
+}
+
+
+bool mp_jog_busy() {
+  return jr.running;
+}
diff --git a/src/plan/jog.h b/src/plan/jog.h
new file mode 100644
index 0000000..784f537
--- /dev/null
+++ b/src/plan/jog.h
@@ -0,0 +1,8 @@
+#pragma once
+
+#include "config.h"
+
+#include <stdbool.h>
+
+void mp_jog(float velocity[AXES]);
+bool mp_jog_busy();
-- 
2.27.0