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bdring
2019-05-02 07:13:13 -05:00
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@@ -20,13 +20,6 @@ This is a port of [Grbl](https://github.com/gnea/grbl) for the ESP32. The ESP32
- **Fast Boot** - Boots almost instantly and does not need to be formally shutdown (unlike Raspberry Pi or Beagle Bone) - **Fast Boot** - Boots almost instantly and does not need to be formally shutdown (unlike Raspberry Pi or Beagle Bone)
- **RTOS (Real Time operating System)** - Custom features can be added without affecting the performance of the motion control system. - **RTOS (Real Time operating System)** - Custom features can be added without affecting the performance of the motion control system.
### Issues / Changes
1. **Direction pin delay** - Not implemented yet. Some drivers require a couple of microseconds after the direction pin is set before you start the step pulse. The original plan was to [use the RMT feature](http://www.buildlog.net/blog/?s=rmt), but that has issues when trying to use it in an Interrupt. **This is typically a option in Grbl that is not used.**
2. **Limit Switch debouncing** is not supported yet. It does not seem to be a problem on my test rigs. The dev board uses R/C filters on all inputs.
3. **Step Pulse Invert:** This has not been fully tested. I suggest...leaving $2=0
### Using It ### Using It
@@ -36,16 +29,6 @@ I use the ESP32 Dev Module version of the ESP32. I suggest starting with that if
For basic instructions on using Grbl use the [gnea/grbl wiki](https://github.com/gnea/grbl/wiki). That is the Arduino version of Grbl, so keep that in mind regarding hardware setup. If you have questions ask via the GitHub issue system for this project. For basic instructions on using Grbl use the [gnea/grbl wiki](https://github.com/gnea/grbl/wiki). That is the Arduino version of Grbl, so keep that in mind regarding hardware setup. If you have questions ask via the GitHub issue system for this project.
Be sure you have external pullup resistors on any GPIO34-39 that you use. These default to door, start, hold and reset functions.
Using Bluetooth:
- [See the Wiki page](https://github.com/bdring/Grbl_Esp32/wiki/Using-Bluetooth)
Using SD Card
- [See this wiki page](https://github.com/bdring/Grbl_Esp32/wiki/Using-the-SD-Card)
### Roadmap ### Roadmap
The roadmap is now [on the wiki](https://github.com/bdring/Grbl_Esp32/wiki/Development-Roadmap). The roadmap is now [on the wiki](https://github.com/bdring/Grbl_Esp32/wiki/Development-Roadmap).