Minor bug fixes.

- Planner was under-estimating maximum speeds through straight
junctions in certain cases. The calculations have been updated to be
more accurate.

- Type declaration fix in probe.c.

 - Commit log for v0.9j generated separately from v0.9i’s.

- Incremented version and updated pre-built firmware link.

README.md

@@ -27,8 +27,7 @@ Grbl includes full acceleration management with look ahead. That means the contr
 ***
 
 _**Master Branch:**_
-* [Grbl v0.9j Atmega328p 16mhz 115200baud with generic defaults](http://bit.ly/1I8Ey4S) _(2015-09-30)_
+* [Grbl v0.9j Atmega328p 16mhz 115200baud with generic defaults](http://bit.ly/1I8Ey4S) _(2015-12-18)_
-* [Grbl v0.9j Atmega328p 16mhz 115200baud with ShapeOko2 defaults](http://bit.ly/1OjUSia) _(2015-09-30)_
   - **IMPORTANT INFO WHEN UPGRADING TO GRBL v0.9 :** 
   - Baudrate is now **115200** (Up from 9600). 
   - Homing cycle updated. Located based on switch trigger, rather than release point.
@@ -36,9 +35,7 @@ _**Master Branch:**_
 
 _**Archives:**_
 * [Grbl v0.9i Atmega328p 16mhz 115200baud with generic defaults](http://bit.ly/1EiviDk) 
-* [Grbl v0.9i Atmega328p 16mhz 115200baud with ShapeOko2 defaults](http://bit.ly/1NYIfKl) 
 * [Grbl v0.9g Atmega328p 16mhz 115200baud with generic defaults](http://bit.ly/1m8E1Qa) 
-* [Grbl v0.9g Atmega328p 16mhz 115200baud with ShapeOko2 defaults](http://bit.ly/1kOAzig) 
 * [Grbl v0.8c Atmega328p 16mhz 9600baud](http://bit.ly/SSdCJE)
 * [Grbl v0.7d Atmega328p 16mhz 9600baud](http://bit.ly/ZhL15G)
 * [Grbl v0.6b Atmega328p 16mhz 9600baud](http://bit.ly/VD04A5)

doc/log/commit_log_v0.9i.txt

@@ -1,27 +1,3 @@
-----------------
-Date: 2015-08-16
-Author: Sonny Jeon
-Subject: Update README.md
-
-----------------
-Date: 2015-08-14
-Author: Sonny Jeon
-Subject: Individual control pin invert compile-option.
-
-- Control pins may be individually inverted through a
-CONTROL_INVERT_MASK macro. This mask is define in the cpu_map.h file.
-
-
-----------------
-Date: 2015-07-17
-Author: Sonny Jeon
-Subject: Version bump to v0.9j
-
-- Version bump requested by OEMs to easily determine whether the
-firmware supports the new EEPROM reset feature. Other than that, no
-significant changes.
-
-
 ----------------
 Date: 2015-06-25
 Author: Sonny Jeon

doc/log/commit_log_v0.9j.txt

@@ -0,0 +1,38 @@
+----------------
+Date: 2015-09-30
+Author: Sonny Jeon
+Subject: Minor bug fixes.
+
+- G38.x was not printing correctly in the $G g-code state reports. Now
+fixed.
+
+- Potential bug regarding volatile variables inside a struct. It has
+never been a problem in v0.9, but ran into this during v1.0
+development. Just to be safe, the fixes are applied here.
+
+- Updated pre-built firmwares with these two bug fixes.
+
+
+----------------
+Date: 2015-08-16
+Author: Sonny Jeon
+Subject: Update README.md
+
+----------------
+Date: 2015-08-14
+Author: Sonny Jeon
+Subject: Individual control pin invert compile-option.
+
+- Control pins may be individually inverted through a
+CONTROL_INVERT_MASK macro. This mask is define in the cpu_map.h file.
+
+
+----------------
+Date: 2015-07-17
+Author: Sonny Jeon
+Subject: Version bump to v0.9j
+
+- Version bump requested by OEMs to easily determine whether the
+firmware supports the new EEPROM reset feature. Other than that, no
+significant changes.
+

grbl/grbl.h

@@ -23,7 +23,7 @@
 
 // Grbl versioning system
 #define GRBL_VERSION "0.9j"
-#define GRBL_VERSION_BUILD "20150930"
+#define GRBL_VERSION_BUILD "20151218"
 
 // Define standard libraries used by Grbl.
 #include <avr/io.h>

grbl/planner.c

@@ -378,11 +378,11 @@ uint8_t plan_check_full_buffer()
        change the overall maximum entry speed conditions of all blocks.
     */
     // NOTE: Computed without any expensive trig, sin() or acos(), by trig half angle identity of cos(theta).
-    if (junction_cos_theta > 0.99) {
+    if (junction_cos_theta > 0.999999) {
       //  For a 0 degree acute junction, just set minimum junction speed. 
       block->max_junction_speed_sqr = MINIMUM_JUNCTION_SPEED*MINIMUM_JUNCTION_SPEED;
     } else {
-      junction_cos_theta = max(junction_cos_theta,-0.99); // Check for numerical round-off to avoid divide by zero.
+      junction_cos_theta = max(junction_cos_theta,-0.999999); // Check for numerical round-off to avoid divide by zero.
       float sin_theta_d2 = sqrt(0.5*(1.0-junction_cos_theta)); // Trig half angle identity. Always positive.
 
       // TODO: Technically, the acceleration used in calculation needs to be limited by the minimum of the

grbl/probe.c

@@ -61,7 +61,7 @@ void probe_state_monitor()
   if (sys_probe_state == PROBE_ACTIVE) {
     if (probe_get_state()) {
       sys_probe_state = PROBE_OFF;
-      memcpy(sys.probe_position, sys.position, sizeof(float)*N_AXIS);
+      memcpy(sys.probe_position, sys.position, sizeof(sys.position));
       bit_true(sys_rt_exec_state, EXEC_MOTION_CANCEL);
     }
   }