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
cnc.h@2:b3c668ec43ac, 2014-02-20 (annotated)
- Committer:
- JonFreeman
- Date:
- Thu Feb 20 09:27:18 2014 +0000
- Revision:
- 2:b3c668ec43ac
- Parent:
- 1:66ee619f206b
- Child:
- 3:7aaf0072cc22
As used to produce Lissajous patterns for EiM articles. XYZ axis good, Axis A not implemented, spindle 'S' working. Using MODSERIAL, therefore no longer compatible with KL46Z, good for KL25Z and Mbed LPC1768
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
JonFreeman | 2:b3c668ec43ac | 1 | #define ESTOP 0x100 // bits used in input reading |
JonFreeman | 2:b3c668ec43ac | 2 | #define XLIM 1 |
JonFreeman | 2:b3c668ec43ac | 3 | #define YLIM 2 |
JonFreeman | 2:b3c668ec43ac | 4 | #define ZLIM 4 |
JonFreeman | 2:b3c668ec43ac | 5 | #define UNKN 8 |
JonFreeman | 1:66ee619f206b | 6 | const double TWO_PI = 8.0 * atan(1.0); |
JonFreeman | 1:66ee619f206b | 7 | const double epsilon = 1e-5; |
JonFreeman | 1:66ee619f206b | 8 | struct pirbufgrain { |
JonFreeman | 1:66ee619f206b | 9 | double x, |
JonFreeman | 1:66ee619f206b | 10 | y, |
JonFreeman | 1:66ee619f206b | 11 | z, |
JonFreeman | 1:66ee619f206b | 12 | c, |
JonFreeman | 1:66ee619f206b | 13 | f_rate; |
JonFreeman | 1:66ee619f206b | 14 | } ; |
JonFreeman | 0:5d0f270bfc87 | 15 | |
JonFreeman | 0:5d0f270bfc87 | 16 | struct singleGparam { // Place to put all we know about 'x' or 'j' etc parameter from G Code line |
JonFreeman | 0:5d0f270bfc87 | 17 | double dbl; |
JonFreeman | 0:5d0f270bfc87 | 18 | unsigned long ul; |
JonFreeman | 0:5d0f270bfc87 | 19 | int i, c; |
JonFreeman | 0:5d0f270bfc87 | 20 | bool changed; // Flagged true when new value for this axis found in Gcode line, false otherwise |
JonFreeman | 0:5d0f270bfc87 | 21 | } ; |
JonFreeman | 0:5d0f270bfc87 | 22 | |
JonFreeman | 0:5d0f270bfc87 | 23 | struct Gparams { // Where possibly messy G code line gets ordered and sorted into |
JonFreeman | 0:5d0f270bfc87 | 24 | struct singleGparam x, y, z, i, j, r, a, b, c, d; // After sorting, know where to find any X, Y etc values ! |
JonFreeman | 0:5d0f270bfc87 | 25 | } ; |
JonFreeman | 0:5d0f270bfc87 | 26 | |
JonFreeman | 2:b3c668ec43ac | 27 | extern const double n_for_onemmpermin, feed_rate_max, feed_rate_min, spindle_min, spindle_max, spindle_factor; |
JonFreeman | 1:66ee619f206b | 28 | //extern const long pulses_per_mm, max_mm_per_min, interrupt_period_us; |
JonFreeman | 1:66ee619f206b | 29 | extern const double pulses_per_mm, max_mm_per_min, interrupt_period_us; |