Archive for the ‘Cortex’ Category
We had so much fun at the 2013 VEX World Championships last week! We saw some great matches, met tons of fantastic people, and got a chance to share some big news with everyone throughout the week. We will be posting more detailed information on our news next week, so keep an eye out for that. Thank you to every one who stopped by to say hi and congrats to EVERY team. You all did an amazing job. Also thank you to VEX Robotics and the REC Foundation for inviting us to be a part of such an awesome event. We look forward to next year!
Check out our short recap video:
And if you haven’t had a chance, head on over to our Facebook page to check out our photo album – VEX Worlds 2013.
Hey everyone! Hope you had an awesome weekend. Just a friendly reminder that we’ll be having another fun Robot Virtual Worlds’ Google Hangout at 6pm EST tonight. We will be talking about the gaming environment within RVW and showing off Palm Island, Operation Reset, the Measurement Toolkit, badges, and a lot more! We look forward to having you attend and join in on the discussion! Visit http://ROBOTC.net/hangouts to join us and watch the live video stream.
P.S. Robot Virtual Worlds website has been revamped and is now live! Check it out at http://www.robotvirtualworlds.com
Hello! We are sorry for being so quiet on the blogs this week. We are in Anaheim, CA at the 2013 VEX World Championship! Below are some pictures from the last few days. Follow us on our ROBOTC Facebook and Twitter page for up-to-date pictures and videos all day.
If you are at VEX Worlds, stop by our booth, say hi, and try out Robot Virtual Worlds!
Next week, we will be at the FIRST Championship in St. Louis, MO!
Hey everyone! Just wanted to let you know we are changing the time for today’s Google Hangout webinar to 6pm EST. We will be talking about the Robot Virtual Worlds’ Level Builder and Model Importer! We hope you’re able to attend and join in on the discussion! Visit http://ROBOTC.net/hangouts to join us and watch the live video stream.
We will be LIVE at 4pm EST today with our free Robot Virtual Worlds webinar! This is the second in a five part Google + Hangout series that will take place every Monday in the month of April. Today’s topic is how to use the Robot Virtual World’s Curriculum Companion.
If you can’t tune in at 4pm EST, we will update this post later in the day with the YouTube recording. If you are joining us live, make sure to send us your questions …
Check out future webinar dates below:
The Robot Virtual Worlds team has been developing a multiplayer game mode, and our group was lucky enough to get a sneak peak last week (and I made sure to record the event for you!)
Check out the video from the preview:
It will work with ROBOTC, have CS2N connectivity for achievements, private rooms so only the people you invite will be allowed in, structured chat rooms, and a lot more!! Look for it to be released at the end of the summer.
What do you think? What features would you like to see included in it?
We are thrilled to announce the new Single and Team perpetual licenses available for Robot Virtual Worlds!! Previously, we only offered Classroom licenses for perpetual users, but due to user requests, we have now added Single and Team options. Read the rest of this entry »
We understand the challenges robotics classrooms face every day in terms of cost, number of robots, batteries, and homework. That is why we created Robot Virtual Worlds (RVW). With RVW, every student can experience the same benefits of learning robots, right on their computer. RVW currently simulates popular real-world VEX, LEGO, and TETRIX robots in a 3D environment; while using the same language, ROBOTC, to program both your virtual robot and your physical robot.
To help you get started and get a better understanding of what RVW can do, we are offering five FREE webinars on Google Hangout every Monday in April at 4pm EST with project manager, Jesse Flot, and some members of his team! We will show you a brief tutorial on the specific topic of the day then take a few questions from the Google Hangout chat or on twitter using hashtag #RVWHangout.
At each webinar, we will be giving out a discount code for Robomatter, the robotics education store, and a chance to win a one-year license for ROBOTC 3.6!!! To tune in live, follow Robomatter on Google+ or visit ROBOTC.net/hangouts the day of the event (you will need a google+ account or twitter account to submit questions.)
Listed below are the specific dates with topics that we will be covering …
We are very excited to announce that today is the first day of Spring and …. the first day of ROBOTC 3.60! ROBOTC is the premiere robotics programming language for educational robotics and competitions. ROBOTC is a C-Based Programming Language with an Easy-to-Use Development Environment. We are really proud of this release and can’t wait to hear what you think! Remember, we could not do this without your support and feedback. We hope you’ll continue to share your comments with us, either in the forums or on our Facebook or Twitter page.
Read the rest of this entry »
The ROBOTC team is happy to announce the ROBOTC 3.59.0 BETA release. We’ve made a number of enhancements and repaired a number of user issues. Some of the major updates are:
- Added support for proxy server when activating ROBOTC.
- Add watchdog timer support to VEX Cortex to alleviate processor crashes that can occur with static.
- Fixed a bug in the NXT color sensor that now allows you to read individual RGB values.
- Updated with the latest version of the 3rd party sensor drivers for NXT. (Thanks Xander!)
See below for the more detailed changelog. You can download ROBOTC 3.59.0 here!
3.54 to 3.59 BETA Changelog
- Add watchdog timer support to VEX Cortex. This will allow the VEX Cortex User Processor to “restart” automatically once the processor crashes/is halted. Useful for any potential static issue that may cause the User Processor to “crash”.
- Change watchdog implementation from “windowed” watchdog to standard watchdog (no window, reset any time). Increase watchdog timeout to 0.75 seconds.
- In Debugger Motors display the last motor was not always properly updated. Fixed.
- Enable emulator for VEX PIC. Fix subsequent bug with “Motors” debugger display for VEX PIC locking up IDE when emulator is enabled; this bug should be limited to VEX PIC Emulator only.
- VEX PIC downloading was failing when master firmware was out of date. Getting stuck in a repetitive loop that wasn’t exiting. Fixed.
- VEX PIC was not executing user programs. Bug was that “start of flash file system VTOC” needed to be aligned on 4-byte boundary. Previous change had added a 1-byte field to the header preamble and there was not a corresponding 3-byte file added for VEX PIC. ARM platforms worked OK. This may also have broken Arduino (i.e. any 8-bit) platform).
- Added a Conditional Compile flag for tUARTs to avoid confusion between uartOne and UART1
- There are two separate flags for “allow any serial port for communications” — one for VEX Cortex and one for all other platforms. This was not obvious. Preferences “Environment” tab was only updating flag for non-Cortex; this has been changed to update the appropriate flag based on platform setting. The VEX Cortex flag can also be updated in the “VEX Cortex” tab.
- User configurable UART setup was screwed up for the platforms whose “uart 0″ is fixed as non-configurable and usable only for system communications port to PC — i.e. VEX Cortex, VEX PIC. The ROBOTC IDE was storing the data in the persistent data table (at start of flash file system) offset by one entry. I.E. data for “uart 1″ on VEX Cortex was stored in “uart 2″, etc.
- NXT color sensor read RGB individual values broken with pointer implementation. Change “getMemoryParmXXX” function calls to “getCommonParamaterValueXXX” function calls. Check rest of firmware for same mistake.
- New feature for 3rd Party Sensor Driver Suite to set the two digital I/O lines on NXT sensors. Added two new sensor types (sensorCustom, sensorCustom9V) for this along with two new property intrinsic variables to set I/O line direction and values; these intrinsic variables are bit masks (2-bits) for the two lines.
- “setPixel” intrinsic (and corresponding “clearPixel” and “invertPixel”) take “unsigned” parameters. But implementation was using “signed” parameters and not properly range checking if parameters were negative. If negative, then should do nothing. Instead they were incorrectly wring to invalid buffer address which eventually caused a firmware crash.
- Fix issue for “Motors” tab for Arduino in “Motors and Sensors Setup” property sheet. Was incorrectly trying to setup “encoder information for motor”, but Arduino platform does not “associate encoder sensor with motor” — which is currently only a feature for VEX Cortex.
- Added Support for Proxy Server when activating ROBOTC – Users can set Proxy preferences under “Detailed Preferences – General – Environment”.
- Incorrect generation of compiler error message when double pointer (i.e. “**”) is used.
- “Print” a range of pages was not working when the starting page was not ’1′. Fixed.
- Remove incorrect error message from error “Assignment between two different pointer types” when one side of ‘=’ is a ‘void *’.
- Compiler was incorrectly generating error message for “Expected a pointer expression in a pointer expression with ‘++’ or ‘-+’ operand. Compiler was incorrectly checking to verify the right operand was an integer value.
- Compiler was incorrectly generating error message for “Invalid pointer expression” in a pointer expression with ‘+’ or ‘-’ operand. One operand of the expression must be a pointer and the other operand must be an integer (without implied conversion of a pointer to an integer). Compiler was incorrectly checking for the integer — the expression incorrectly had a “!” in it!
- Change code generation of ‘var arg’ for pointers to be consistent with standard C — i.e. the value of the pointer is placed in the argument. This may result in an additional instruction generated when argument is a ‘string’; previously RobotC got too cute trying to save this extra instruction which only worked for “%s” format codes but was broken for “%d” on a pointer.
- In ‘sprintf” implementation for “%s” and “%p” format codes– change from “get Address of parameter” to”get value of parameter” to match corresponding change in compiler code. Also minor cleanup of “%s” and “%p” format codes.
- Assignment expressions of “<char * variable> = <char constant> were generating compiler error because the “<char constant>” was evaluated as a “string” type. Added code in “get expression type” to check for this and not generate error as the compiler auto converts “string” to “char *” during code generation.
- Fixes an issue with the Live Start Page and “check for updates” that may have caused crashes.
- Improved validation of pointer expressions. Fix bug in calculating expression type of pointer expressions like “<ptr sub-expression> + <numeric constant>”; the result was (always?) incorrectly set as “long *”? Also added check that “=” of pointer is from a pointer of the same type – otherwise generate error message.
- Fixed consistency in implementation of “random” intrinsic property.
- Eliminate compiler error message in constant expression evaluation of sub-expressions using “*” operator. If either of the two operands is ‘zero’ then result is zero regardless of whether the other operand is a compile time constant.
- Do not generate additional errors — “too many parameters” specified — when procedure is “compiler generated undefined symbol”.
- When switch between “real robots” and “emulator”, the function that calculates “size of RAM pointer variable” was not being called. It adjusts between 2-byte (VEX PIC, Arduino) and 4-byte (Emulator, VEX Cortex, NXT) pointer sizes. No issue with VEX Cortex and NXT as they only use 4-byte pointers. But a problem with VEX PIC and Arduino where real robots use 2-byte RAM pointers! Added the appropriate call to function setup.
- Small code optimization for “postfix –”/postfix ++” operators to avoid temporary. In some cases they can be simplified to prefix operands.
- Incorrect initialization of static variables in “inner scope” for local procedure. They were initialized every time inner scope block was accessed rather than once on program startup.
- Debugger Panes for “Locals” and “Globals” (especially Globals) was not properly handling updates to ‘long’ and ‘float’ variables. Globals was completely broke — only lower two bytes of 4-byte variables was being updated which broke ‘long’ and ‘float’ variables. In both, ‘char’ variables were updating a short value — i.e. overwriting following characters.
- Fix problem with incorrect user code using a “short” variable and “sprintf” format code of “%f”. This can crash ROBOTC VM firmware if the short variable is not aligned on a 32-bit boundary.
- Add additional entries for StringFind for Character Constants and added test program.
- Redefine datalog opcodes and intrinsics. Legacy datalog incompatible with 3.5x VM operands which split memory variables and intrinsic properties into separate items.
- Firmware for all platforms now call “datalogHandlerInit()”. Conditional compile will define as NULL macro if a platform does not support Datalog. Datalog support is now conditionally compiled via “bHasDatalog” define rather than hard-coded as NXT only.
- Fix incorrect compiler type checking error when string constant is assigned to a char pointer.
- Fix bug in check for “is this a preprocessor string comparison expression”.
- Eliminate preprocessor string comparisons in Natural Language and replace with “defined(_Target_XXX_) where “_Target_XXX_” are three new system defined preprocessor variables — “_target_Robot_”, “_Target_Emulator_” and “Target_VirtWorld_”. Sample programs modified appropriately. Legacy user programs using legacy definitions will still work but will generate a compiler warning about non-standard extension.
- Add registry flag to enable compiler extension to allow preprocessor expressions support for string comparisons. Generate compiler error message if encountered without the flag being set.
- “cast” code generation fix. Previously when cast changed sign of result the ‘cast’ was applied before expression was converted to ‘int’ size used during a calculation. So casting a “ubyte” to “int” incorrectly converted it to a “signed char”. What should happen is “ubyte” expression gets evaluated into an “int” as part of expression evaluation (all expressions are evaluated at ‘int’ (or higher) level in “C”) and then the cast to “int” has no additional effect.
- Function to extract numeric “COMxxx”. Expanded syntax to support successful parsing of “(COM99)” previously would not accept extraneous characters.
- Add improved Dialog for selecting Communications Port. It uses a list box to display information about the port. Add check box to select any communications port.
- Compiler crash when parsing invalid syntax of ‘?’ expression. Compiler was not handling the case when “NULL” pointer returned from parsing sub-expression. The “NULL” was incorrect.