moved all strings to pgm-memory

config.c

@@ -24,6 +24,7 @@
 #include "config.h"
 #include "eeprom.h"
 #include "wiring_serial.h"
+#include <avr/pgmspace.h>
 
 void reset_settings() {
   settings.steps_per_mm[0] = X_STEPS_PER_MM;
@@ -37,16 +38,16 @@ void reset_settings() {
 }
 
 void dump_settings() {
-  printString("$0 = "); printFloat(settings.steps_per_mm[0]);
-  printString(" (steps/mm x)\r\n$1 = "); printFloat(settings.steps_per_mm[1]);
-  printString(" (steps/mm y)\r\n$2 = "); printFloat(settings.steps_per_mm[2]);
-  printString(" (steps/mm z)\r\n$3 = "); printInteger(settings.pulse_microseconds);
-  printString(" (microseconds step pulse)\r\n$4 = "); printFloat(settings.default_feed_rate);
-  printString(" (mm/sec default feed rate)\r\n$5 = "); printFloat(settings.default_seek_rate);
-  printString(" (mm/sec default seek rate)\r\n$6 = "); printFloat(settings.mm_per_arc_segment);
-  printString(" (mm/arc segment)\r\n$7 = "); printInteger(settings.invert_mask); 
-  printString(" (step port invert mask. binary = "); printIntegerInBase(settings.invert_mask, 2);  
-  printString(")\r\n\r\n'$x=value' to set parameter or just '$' to dump current settings\r\n");
+  printPgmString(PSTR("$0 = ")); printFloat(settings.steps_per_mm[0]);
+  printPgmString(PSTR(" (steps/mm x)\r\n$1 = ")); printFloat(settings.steps_per_mm[1]);
+  printPgmString(PSTR(" (steps/mm y)\r\n$2 = ")); printFloat(settings.steps_per_mm[2]);
+  printPgmString(PSTR(" (steps/mm z)\r\n$3 = ")); printInteger(settings.pulse_microseconds);
+  printPgmString(PSTR(" (microseconds step pulse)\r\n$4 = ")); printFloat(settings.default_feed_rate);
+  printPgmString(PSTR(" (mm/sec default feed rate)\r\n$5 = ")); printFloat(settings.default_seek_rate);
+  printPgmString(PSTR(" (mm/sec default seek rate)\r\n$6 = ")); printFloat(settings.mm_per_arc_segment);
+  printPgmString(PSTR(" (mm/arc segment)\r\n$7 = ")); printInteger(settings.invert_mask); 
+  printPgmString(PSTR(" (step port invert mask. binary = ")); printIntegerInBase(settings.invert_mask, 2);  
+  printPgmString(PSTR(")\r\n\r\n'$x=value' to set parameter or just '$' to dump current settings\r\n"));
 }
 
 int read_settings() {
@@ -76,18 +77,18 @@ void store_setting(int parameter, double value) {
     case 6: settings.mm_per_arc_segment = value; break;
     case 7: settings.invert_mask = trunc(value); break;
     default: 
-    printString("Unknown parameter\r\n");
+    printPgmString(PSTR("Unknown parameter\r\n"));
     return;
   }
   write_settings();
-  printString("Stored new setting\r\n");
+  printPgmString(PSTR("Stored new setting\r\n"));
 }
 
 void config_init() {
   if(read_settings()) {
-    printString("'$' to dump current settings\r\n");
+    printPgmString(PSTR("'$' to dump current settings\r\n"));
   } else {
-    printString("EEPROM blank. Rewrote default settings:\r\n");
+    printPgmString(("EEPROM blank. Rewrote default settings:\r\n"));
     reset_settings();
     write_settings();
     dump_settings();

config.h

@@ -25,7 +25,8 @@
 
 // Settings that can only be set at compile-time:
 
-#define BAUD_RATE 9600
+// #define BAUD_RATE 9600
+#define BAUD_RATE 115200
 
 #define STEPPERS_ENABLE_DDR     DDRD
 #define STEPPERS_ENABLE_PORT    PORTD

script/console

@@ -1,2 +1,3 @@
-socat -d -d READLINE /dev/tty.usbserial-A9007QcR,clocal=1,nonblock=1,cread=1,cs8,ixon=1,ixoff=1
+# socat -d -d READLINE /dev/tty.usbserial-A9007QcR,clocal=1,nonblock=1,cread=1,cs8,ixon=1,ixoff=1
+socat -d -d READLINE /dev/tty.FireFly-A964-SPP-1,clocal=1,nonblock=1,cread=1,cs8,ixon=1,ixoff=1
 

script/stream.rb

@@ -24,7 +24,7 @@ if ARGV.empty?
   exit
 end
 
-SerialPort.open('/dev/tty.usbserial-A9007QcR', 9600) do |sp|
+SerialPort.open('/dev/tty.FireFly-A964-SPP-1', 115200) do |sp|
   sp.write("\r\n\r\n");
   sleep 5
   ARGV.each do |file|

serial_protocol.c

@@ -25,23 +25,23 @@
 #include "config.h"
 #include <math.h>
 #include "nuts_bolts.h"
-
-#define LINE_BUFFER_SIZE 60
+#include <avr/pgmspace.h>
+#define LINE_BUFFER_SIZE 30
 
 char line[LINE_BUFFER_SIZE];
 uint8_t char_counter;
 
 void prompt() {
-  printString("ok\r\n");
+  printPgmString(PSTR("ok\r\n"));
 }
 
 void sp_init() 
 {
   beginSerial(BAUD_RATE);
   
-  printString("\r\nGrbl ");
-  printString(VERSION);
-  printString("\r\n");  
+  printPgmString(PSTR("\r\nGrbl "));
+  printPgmString(PSTR(VERSION));
+  printPgmString(PSTR("\r\n"));  
   prompt();
 }
 

stepper.c

@@ -80,6 +80,7 @@ void st_buffer_line(int32_t steps_x, int32_t steps_y, int32_t steps_z, uint32_t
   line_buffer_head = next_buffer_head;
   // enable stepper interrupt
 	TIMSK1 |= (1<<OCIE1A);
+  
 }
 
 // This timer interrupt is executed at the rate set with config_step_timer. It pops one instruction from

wiring_serial.c

@@ -23,6 +23,8 @@
 */
 
 #include "wiring_private.h"
+#include <math.h>
+#include <avr/pgmspace.h>
 
 // Define constants and variables for buffering incoming serial data.  We're
 // using a ring buffer (I think), in which rx_buffer_head is the index of the
@@ -149,6 +151,14 @@ void printString(const char *s)
 		printByte(*s++);
 }
 
+// Print a string stored in PGM-memory
+void printPgmString(const char *s)
+{
+  char c;
+	while ((c = pgm_read_byte_near(s++)))
+		printByte(c);
+}
+
 void printIntegerInBase(unsigned long n, unsigned long base)
 { 
 	unsigned char buf[8 * sizeof(long)]; // Assumes 8-bit chars. 

wiring_serial.h

@@ -34,6 +34,7 @@ void printMode(int);
 void printByte(unsigned char c);
 void printNewline(void);
 void printString(const char *s);
+void printPgmString(const char *s);
 void printInteger(long n);
 void printHex(unsigned long n);
 void printOctal(unsigned long n);