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Addressed much larger flash size with avr-gcc v4.9.2. Refactored reports to save 160KB.

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- 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.
This commit is contained in:
Sonny Jeon 2016-09-25 00:05:25 -06:00
parent c0f61e4aac
commit b04faaf0d3
6 changed files with 144 additions and 112 deletions
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4
grbl/print.h
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@ -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();