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Updated Readme.md file (#965)

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* Adding new usermod for TTGO T-DIsplay.

* Finalizing the code

* Modified and cleaned up readme.md file

* Fixes to platformio.ini to restore back to previous state

* Cleaned up comments in usermod file

* Updated readme with clarifications on how to modify the library files.  Saving the platformio.ini file after uncommenting the line to add the TFT_eSPI library should download the necessary library files without needing to build (and fail) first.

* Cleanup

* Readme cleanup

* corrected error in commenting platformio.ini
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spiff72 2020-06-05 08:22:03 -04:00 committed by GitHub
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usermods/TTGO-T-Display/README.md
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@ -37,11 +37,24 @@ lib_deps =
...
```
Also, while in the `platformio.ini` file, you must change the environment setup to build for just the esp32dev platform as follows:
Comment out the line described below:
```ini
# Travis CI binaries (comment this out when building for single board)
; default_envs = travis_esp8266, esp01, esp01_1m_ota, travis_esp32
```
and UNCOMMENT the following line in the 'Single binaries' section:
```ini
default_envs = esp32dev
```
Save the `platformio.ini` file. Once this is saved, the required library files should be automatically downloaded for modifications in a later step.
### Platformio_overrides.ini (added)
Copy the `platformio_overrides.ini` file which is contained in the `usermods/TTGO-T-Display/` folder into the root of your project folder. This file contains an override that remaps the button pin of WLED to use the on-board button to the right of the USB-C connector (when viewed with the port oriented downward - see hardware photo).
### TFT_eSPI Library Adjustments (board selection)
NOTE: I am relatively new to Platformio and VS Code, but I find that in order to get the project populated with the TFT_eSPI library (so the following changes can be made), I need to attempt an initial build that I know will fail. There is probably a better way to accomplish this, but it worked for me. Once the first build fails, the `User_Setup_Select.h` file can be found in the `/.pio/libdeps/esp32dev/TFT_eSPI_ID1559` folder.
We need to modify a file in the `TFT_eSPI` library to select the correct board. If you followed the directions to modify and save the `platformio.ini` file above, the `User_Setup_Select.h` file can be found in the `/.pio/libdeps/esp32dev/TFT_eSPI_ID1559` folder.
Modify the `User_Setup_Select.h` file as follows:
* Comment out the following line (which is the 'default' setup file):
@ -53,7 +66,12 @@ Modify the `User_Setup_Select.h` file as follows:
#include <User_Setups/Setup25_TTGO_T_Display.h> // Setup file for ESP32 and TTGO T-Display ST7789V SPI bus TFT
```
Run the build again and it should complete correctly.
Run the build and it should complete correctly. If you see a failure like this:
```ini
xtensa-esp32-elf-g++: error: wled00\wled00.ino.cpp: No such file or directory
xtensa-esp32-elf-g++: fatal error: no input files
```
Just try building again - I find that sometimes this happens on the first build attempt and subsequent attempts will build correctly.
## Arduino IDE
- UNTESTED