Addressed much larger flash size with avr-gcc v4.9.2. Refactored repo…

…rts to save 160KB.

- The newest Arduino IDE 1.6.12 has recently updated to avr-gcc v4.9.2.
Unfortunately, it produces a compiled size almost 0.7KB to 1KB larger
than prior versions! This can easily cause the base build to exceed the
Arduino Duemilanove/Nano flash limit of 30.5KB. The Arduino Uno seems
to be ok still with its 31.5KB flash limit.

- Makefile `-flto` compile flag added to cut down on the horrible flash
size when using the new avr-gcc. (Edit Makefile and remove comment on
COMPILE definition). This brings it in-line with what the IDE produces.

- Functionalized repetitive tasks in report.c to try to reduce overall
flash size. Successfully cut down about 160bytes.

- Removed printFloat_SettingValue() and printFloat_RPMValue()
functions. These aren’t required and can be replaced with a direct call
to printFloat() because they don’t require a unit conversion check.

Makefile

@@ -42,8 +42,14 @@ FUSES = -U hfuse:w:0xd2:m -U lfuse:w:0xff:m
 # Tune the lines below only if you know what you are doing:
 
 AVRDUDE = avrdude $(PROGRAMMER) -p $(DEVICE) -B 10 -F
+
+# Compile flags for avr-gcc v4.8.1. Does not produce -flto warnings.
 COMPILE = avr-gcc -Wall -Os -DF_CPU=$(CLOCK) -mmcu=$(DEVICE) -I. -ffunction-sections
 
+# Compile flags for avr-gcc v4.9.2 compatible with the IDE. Or if you don't care about the warnings. 
+# COMPILE = avr-gcc -Wall -Os -DF_CPU=$(CLOCK) -mmcu=$(DEVICE) -I. -ffunction-sections -flto
+
+
 OBJECTS = $(addprefix $(BUILDDIR)/,$(notdir $(SOURCE:.c=.o)))
 
 # symbolic targets:

doc/log/commit_log_v1.1.txt

@@ -1,3 +1,21 @@
+----------------
+Date: 2016-09-24
+Author: Sonny Jeon
+Subject: Serial RX count bug fix. Settings codes CSV. More documentation.
+
+- Reverted back the serial RX count function to how it was. The
+variable type was unsigned and cause an integer underflow whenever the
+calculation produced a negative number. The old way was the correct way.
+
+- Lots of minor edits to the code CSVs and markdown documents.
+
+- Expanded on explaining feedback messages and startup line execution
+feedback.
+
+- Created a new settings codes CSV to help GUIs import the values and
+meanings.
+
+
 ----------------
 Date: 2016-09-22
 Author: Sonny Jeon

grbl/grbl.h

@@ -23,7 +23,7 @@
 
 // Grbl versioning system
 #define GRBL_VERSION "1.1a"
-#define GRBL_VERSION_BUILD "20160922"
+#define GRBL_VERSION_BUILD "20160925"
 
 // Define standard libraries used by Grbl.
 #include <avr/io.h>

grbl/print.c

@@ -173,7 +173,6 @@ void printFloat(float n, uint8_t decimal_places)
 // in the config.h.
 // - CoordValue: Handles all position or coordinate values in inches or mm reporting.
 // - RateValue: Handles feed rate and current velocity in inches or mm reporting.
-// - SettingValue: Handles all floating point settings values (always in mm.)
 void printFloat_CoordValue(float n) {
  if (bit_istrue(settings.flags,BITFLAG_REPORT_INCHES)) {
  printFloat(n*INCH_PER_MM,N_DECIMAL_COORDVALUE_INCH);
@@ -190,10 +189,6 @@ void printFloat_RateValue(float n) {
  }
 }
 
-// void printFloat_SettingValue(float n) { printFloat(n,N_DECIMAL_SETTINGVALUE); }
-
-void printFloat_RPMValue(float n) { printFloat(n,N_DECIMAL_RPMVALUE); }
-
 // Debug tool to print free memory in bytes at the called point.
 // NOTE: Keep commented unless using. Part of this function always gets compiled in.
 // void printFreeMemory()

grbl/print.h

@@ -42,12 +42,8 @@ void printFloat(float n, uint8_t decimal_places);
 // Floating value printing handlers for special variables types used in Grbl.
 // - CoordValue: Handles all position or coordinate values in inches or mm reporting.
 // - RateValue: Handles feed rate and current velocity in inches or mm reporting.
-// - SettingValue: Handles all floating point settings values (always in mm.)
-// - RPMValue: Handles spindle RPM values in settings and reports.
 void printFloat_CoordValue(float n);
 void printFloat_RateValue(float n);
-// void printFloat_SettingValue(float n);
-void printFloat_RPMValue(float n);
 
 // Debug tool to print free memory in bytes at the called point. Not used otherwise.
 void printFreeMemory();