Code to drive a CNC machine via a PC LPT port lookalike 25 pin 'D', experiment in 'PC/Mach3' replacement. Designed to compile and run on mbed LPC1768, Freescale KL25Z and Freescale KL46Z. Proved on LPC1768 and KL25Z, problem with serial port on KL46Z. Reads subset of 'G Codes' through usb/serial port and drives 3 stepper/servo drives for X, Y and Z, also similar Step/Dir outputs for spindle motor control. Emulates PC LPT, outputs 'charge pump', proved driving Seig KX3 CNC mill
Diff: command_interpreter.cpp
- Revision:
- 2:b3c668ec43ac
- Parent:
- 1:66ee619f206b
- Child:
- 3:7aaf0072cc22
--- a/command_interpreter.cpp Thu Feb 06 08:45:02 2014 +0000 +++ b/command_interpreter.cpp Thu Feb 20 09:27:18 2014 +0000 @@ -1,17 +1,21 @@ #include "mbed.h" #include "rtos.h" +#include "MODSERIAL.h" #include "cnc.h" using namespace std; -extern Serial pc; -extern bool liss_active; -extern unsigned long pir_s; -extern int spindlefwdrev; +extern MODSERIAL pc; +//extern Serial pc; +//extern bool liss_active; extern struct Gparams last_position; -extern int PutMoveOnList (struct pirbufgrain & s) ; -extern struct digital_readouts dro; // +extern void move_to_XYZ (struct pirbufgrain & ins) ; +//extern struct digital_readouts dro; // +//extern void scmd (struct singleGparam * a) ; +extern void flags_report_cmd (struct singleGparam * a) ; +extern void report_inputs () ; -double feed_rate = 1.0; // global scope, mm per minute. DEFAULTS to 1.0mm per min, very slow. +double feed_rate = 1.0, // global scope, mm per minute. DEFAULTS to 1.0mm per min, very slow. + spindle_rpm = 0.0; // global scope bool isdigit (int a) { @@ -122,29 +126,6 @@ } } -const double duration_multiplier = 60000000.0 / interrupt_period_us; - -void mover (struct pirbufgrain & ins) { - struct pirbufgrain outs; - double distx = ins.x - last_position.x.dbl, - disty = ins.y - last_position.y.dbl, - distz = ins.z - last_position.z.dbl, - distT = sqrt ((distx * distx) + (disty * disty) + (distz * distz)), // 3D Pythag ! - temp = n_for_onemmpermin / distT; - if (distT < 0.01) { - pc.printf("Very small move %.4f, Ignoring!\r\n", distT); - return; - } - last_position.x.dbl = ins.x; // Update global last_position record - last_position.y.dbl = ins.y; - last_position.z.dbl = ins.z; - outs.f_rate = ins.f_rate; - outs.c = duration_multiplier * distT; // Duration ticks subject to feed rate compo - outs.x = temp * distx; - outs.y = temp * disty; - outs.z = temp * distz; // Have assembled data ready to put onto queue of move instructions - PutMoveOnList (outs); -} void g2g3cmdcore (struct singleGparam * source_array, int twoorthree) { struct Gparams tmp; @@ -222,6 +203,8 @@ next_point.z += z_step; pc.printf("X %.3f, Y %.3f\r\n", next_point.x, next_point.y); Thread::wait(300); + next_point.f_rate = feed_rate; + move_to_XYZ (next_point); } break; // end of case 2: // Centre format arc ** OFFSETS ARE RELATIVE ** Abs coordinates not catered for default: // Input error detected @@ -232,8 +215,7 @@ void g0g1cmdcore (struct singleGparam * source_array, double f_rate) // Updates any / all of x, y, z NCOs { // Only get here when some G0 or G1 input has been read. G0 or G1 determined by f_rate - struct pirbufgrain ins, outs; - double distx, disty, distz;//, outx, outy, outz, outtimefactor; + struct pirbufgrain ins;//, outs; struct Gparams tmp; get_codepositions (source_array, tmp); // will overwrite with new where entered if (!tmp.x.changed && !tmp.y.changed && !tmp.z.changed) { @@ -244,41 +226,7 @@ ins.y = tmp.y.dbl; ins.z = tmp.z.dbl; ins.f_rate = f_rate; - distx = ins.x - last_position.x.dbl; // All doubles - disty = ins.y - last_position.y.dbl; - distz = ins.z - last_position.z.dbl; - double distT = sqrt ((distx * distx) + (disty * disty) + (distz * distz)); - if (distT < 0.01) { - pc.printf("Very small move %.4f, Ignoring!\r\n", distT); - return; - } - if (f_rate > feed_rate_max) { - pc.printf("WARNING Stupid feed rate in G0/G1 of %f, setting to %f\r\n", f_rate, feed_rate_max); - f_rate = feed_rate_max; - } - if (f_rate < 0.0) { - pc.printf("Bonkers neg feed rate %f, setting to 0"); - f_rate = 0.0; - } - double temp = n_for_onemmpermin / distT; -// pc.printf("\nG0--G1 Moving to X %4.4f, Y %4.4f, Z%4.4f, distT %f\r\n", px, py, pz, distT); -// pc.printf("Moving From pos'n X %4.4f, Y %4.4f, Z%4.4f\r\n", last_position.x.dbl, last_position.y.dbl, last_position.z.dbl); -// pc.printf("Distances to move X %4.4f, Y %4.4f, Z%4.4f\r\n", distx, disty, distz); -// pc.printf("mm per sec req'd X %4.4f, Y %4.4f, Z%4.4f\r\n", xmmps, ymmps, zmmps); - pc.printf("Total move distance %4.4f, at feed rate %.2f, run time SECs = %f\r\n", distT, f_rate, 60.0 * distT / f_rate); -// pc.printf("This time maps to %f interrupt ticks\r\n", run_secs * 1000000.0 / interrupt_period_us); - last_position.x.dbl = ins.x; // Update global last_position record - last_position.y.dbl = ins.y; - last_position.z.dbl = ins.z; - outs.f_rate = ins.f_rate; - outs.c = duration_multiplier * distT; // Duration ticks subject to feed rate compo - outs.x = temp * distx; - outs.y = temp * disty; - outs.z = temp * distz; -// pc.printf("Dists Scaled for angle, X%f, Y%f, Z%f\r\n", outs.x, outs.y, outs.z); -// pc.printf("Last position X%f, Y%f, Z%f\r\n", last_position.x.dbl, last_position.y.dbl, last_position.z.dbl); -// outs.a.dbl = 0.0; // not used axis - PutMoveOnList (outs); + move_to_XYZ (ins); } void g0cmd (struct singleGparam * a) // Updates any / all of x, y, z NCOs @@ -291,36 +239,59 @@ g0g1cmdcore (a, feed_rate); // Settable feed_rate } +void g2cmd (struct singleGparam * a) { // Clockwise arc + g2g3cmdcore (a, 2); +} + +void g3cmd (struct singleGparam * a) { // Counter clockwise arc + g2g3cmdcore (a, 3); +} + void fcmd (struct singleGparam * a) { // Set Feed Rate command if (a[1].dbl < 0.0) { - pc.printf("feed rate %f ? Setting to 0\r\n", a[1].dbl); + pc.printf("feed rate %.1f ? Setting to 0\r\n", a[1].dbl); a[1].dbl = 0.0; } if (a[1].dbl > feed_rate_max) { - pc.printf ("Error, can't set feed rate to %f, max is %f, ", a[1].dbl, feed_rate_max); + pc.printf ("Error, can't set feed rate to %.1f, max is %.1f, ", a[1].dbl, feed_rate_max); a[1].dbl = feed_rate_max; } - pc.printf ("Setting feed_rate to %f\r\n", a[1].dbl); + pc.printf ("Setting feed_rate to %.1f\r\n", a[1].dbl); feed_rate = a[1].dbl; } +extern void spindle_control (double ss) ; +extern bool spindle_running () ; -void sfcmd (struct singleGparam * a) {pc.printf("Spindle Fwd\r\n"); spindlefwdrev = 0;} -void srcmd (struct singleGparam * a) {pc.printf("Spindle Rev\r\n"); spindlefwdrev = 4;} -void stopcmd (struct singleGparam * a) {pc.printf("Stop ! er, not working yet\r\n");} +void M3cmd (struct singleGparam * a) { spindle_control (spindle_rpm); } +void M5cmd (struct singleGparam * a) { spindle_control (0.0); } void scmd (struct singleGparam * a) { - pc.printf("pir_s=0x%x\r\n", pir_s); - if (a[1].dbl < 0.0 || a[1].dbl > spindle_max) { - pc.printf ("Errror setting spindle RPM, can't set to %f, ignoring request\r\n", a[1].dbl); -// return; + if (fabs(a[1].dbl) > spindle_max) { + pc.printf ("Errror setting spindle RPM, can't set to %.0f, ignoring request\r\n", a[1].dbl); + return; } - pc.printf ("Setting spindle RPM to %f\r\n", a[1].dbl); -// feed_rate = a[1].d; // ****TO DO**** - pir_s = (unsigned long) (a[1].dbl * 4096); - pc.printf("pir_s=0x%x\r\n", pir_s); + pc.printf ("Setting spindle RPM to %.0f Can set Pos or Neg for fwd/rev\r\n", a[1].dbl); + spindle_rpm = a[1].dbl; + if (spindle_running()) + spindle_control (spindle_rpm); +/* + + pir_spin = (signed long) (a[1].dbl * spindle_factor); + t = ticks; + while (t == ticks) {} // wait until just after next interrupt + p = mysteppers; + if (pir_spin & 0x80000000) + p |= SDi; + else + p &= ~SDi; + mysteppers = p; +*/ + } -//void stopcmd (struct grain * a) {pc.printf("Stop !\r\n");} +extern void target_cmd (struct singleGparam * a) ; + +void stopcmd (struct singleGparam * a) {pc.printf("Stop ! er, not working yet\r\n");} void m1cmd (struct singleGparam * a) {pc.printf("m1 Optional Programme Stop\r\n");} void m3cmd (struct singleGparam * a) {pc.printf("m3 Rotate Spindle Clockwise\r\n");} void m4cmd (struct singleGparam * a) {pc.printf("m4 Rotate Spindle Counter Clockwise\r\n");} @@ -341,16 +312,14 @@ void g53cmd (struct singleGparam * a) {pc.printf("g53 Move in Absolute Coordinates\r\n");} void g90cmd (struct singleGparam * a) {pc.printf("g90 Absolute Distance Mode\r\n");} */ -void g2cmd (struct singleGparam * a) { // Clockwise arc - g2g3cmdcore (a, 2); - } -void g3cmd (struct singleGparam * a) { // Counter clockwise arc - g2g3cmdcore (a, 3); - } -void g4cmd (struct singleGparam * a) {pc.printf("g4 Dwell\r\n");} -void g91p1cmd (struct singleGparam * a) {pc.printf("g91.1 \r\n");} +//void g4cmd (struct singleGparam * a) {pc.printf("g4 Dwell\r\n");} +//void g91p1cmd (struct singleGparam * a) {pc.printf("g91.1 \r\n");} -void tasktstone (void const * name) +//void report_inputs () { +void report_ins_cmd (struct singleGparam * a) { + report_inputs(); +} +/*void tasktstone (void const * name) { static int i = 0; pc.printf("Arrived at tasktstone\r\n"); @@ -359,7 +328,7 @@ Thread::wait(9500); osThreadYield(); } -} +}*/ /*void tasktestcmd (struct singleGparam * a) { pc.printf("At tasktestcmd\r\n"); @@ -367,16 +336,19 @@ pc.printf("Leaving tasktestcmd\r\n"); } */ +extern void lissajous (double) ; + void lisscmd (struct singleGparam * a) { - if(liss_active) { + lissajous (feed_rate); +/* if(liss_active) { pc.printf("Can not add Lissajous, already running.\r\n"); } else { pc.printf("Adding Lissajous task\r\n"); liss_active = true; - } + }*/ } - +/* void drooncmd (struct singleGparam * a) { dro.dro_output = true; // Enable continuous dro display update @@ -385,9 +357,9 @@ { dro.dro_output = false; // Disable continuous dro display update } - +*/ -void g90p1cmd (struct singleGparam * a) +/*void g90p1cmd (struct singleGparam * a) { pc.printf ("Arrived at function fredcmd with %d parameters\r\n", a[0].i); for (int i = 1; i <= a[0].i; i++) { @@ -397,7 +369,7 @@ } pc.printf (" endof param list\r\n"); } - +*/ void menucmd (struct singleGparam * a); struct kb_command { const char * cmd_word; // points to text e.g. "menu" @@ -416,10 +388,10 @@ {"menu", "Lists available commands, same as ls", menucmd}, {"ls", "Lists available commands, same as menu", menucmd}, {"stop", "To Stop the Machine !", stopcmd}, - {"sf", "Spindle Clockwise", sfcmd}, - {"sr", "Spindle Anticlockwise", srcmd}, {"f ", "To set Feed Rate mm/min, e.g. f 25", fcmd}, {"s ", "To set Spindle RPM, e.g. S 1250", scmd}, + {"m3", "Start Spindle at last 'S'", M3cmd}, + {"m5", "Stop Spindle", M5cmd}, {"g0", "Rapid move", g0cmd}, /*{"m30", "Not Implemented", m30cmd}, {"m47", "Not Implemented", m47cmd}, @@ -444,10 +416,13 @@ {"g1", "Linear Interpolation - move straight at current feed rate", g1cmd}, {"g2", "Helical Interpolation CW (Arc, circle)", g2cmd}, {"g3", "Helical Interpolation CCW (Arc, circle)", g3cmd}, - {"liss", "Add Lissajous pattern generator", lisscmd}, + {"liss", "Run Lissajous pattern generator", lisscmd}, + {"flags", "Report System Flags", flags_report_cmd}, + {"inputs", "Report State of Input bits", report_ins_cmd}, + {"target", "Identify computer device", target_cmd}, // {"ttest", "Add a task to prove we can, or not", tasktestcmd}, - {"dro on", "Turn dro readout on", drooncmd}, - {"dro off", "Turn dro readout off", drooffcmd} +// {"dro on", "Turn dro readout on", drooncmd}, +// {"dro off", "Turn dro readout off", drooffcmd} }; //const int numof_menu_items = sizeof(kbc2) / sizeof(kb_command); //const int numof_menu_items_sc = sizeof(input_syntax_check) / sizeof(kb_command); @@ -468,6 +443,40 @@ return false; } +void nudger (int code) { + // Using <Ctrl>+ 'F', 'B' for Y, 'L', 'R' for X, 'U', 'D' for Z + // 6 2 12 18 21 4 +// struct Gparams dest; + struct pirbufgrain dest; + dest.x = last_position.x.dbl; + dest.y = last_position.y.dbl; + dest.z = last_position.z.dbl; + dest.f_rate = feed_rate; + switch (code) { + case 6: // 'F' move -Y + dest.y -= 0.1; + break; + case 2: // 'B' move +Y + dest.y += 0.1; + break; + case 12: // 'L' move +X + dest.x += 0.1; + break; + case 18: // 'R' move -X + dest.x -= 0.1; + break; + case 21: // 'U' move +Z + dest.z += 0.1; + break; + case 4: // 'D' move -Z + dest.z -= 0.1; + default: + break; +// pc.printf("Nuffink to do in nudger\r\n"); + } // end of switch + move_to_XYZ (dest); +} + ////class CLI { /* @@ -481,7 +490,7 @@ static char cmd_line[MAX_CMD_LEN + 4]; static struct singleGparam params[MAX_PARAMS + 1]; static int cl_index = 0, lastalpha = 0; - pc.printf("Got to cli, Starting cli\r\n"); +// pc.printf("Got to cli, Starting cli\r\n"); if (true) { command_list_ptr = command_execute; numof_menu_items = sizeof(command_execute) / sizeof(kb_command); @@ -498,6 +507,13 @@ cl_index = 0; } ch = tolower(pc.getc()); + if (ch == '\r' || ch >= ' ' && ch <= 'z') + pc.printf("%c", ch); + else { // Using <Ctrl>+ 'F', 'B' for Y, 'L', 'R' for X, 'U', 'D' for Z + cl_index = 0; // 6 2 12 18 21 4 + pc.printf("[%d]", ch); + nudger (ch); + } if(ch != '\r') // was this the 'Enter' key? cmd_line[cl_index++] = ch; // added char to command being assembled else { // key was CR, may or may not be command to lookup @@ -587,6 +603,7 @@ if(i == numof_menu_items) pc.printf("No Match Found for CMD [%s]\r\n", cmd_line); } // End of If have got some chars to lookup + pc.printf("\r\n>"); cl_index = lastalpha = 0; } // End of else key was CR, may or may not be command to lookup } // End of while (pc.readable())