I have Arduino IDE 2.3.2 installed, installed FabGL 1.0. using the Library Manager and installed esp32 3.0.2 by espressif as instructed by many videos on internet (preferences->Additional boards manager…).

The Arduino IDE is the ‘arduino-ide_2.3.2_Linux_64bit.AppImage’ on Linux Ubuntu 20.04.

I selected the ESP32 Dev Module and started compiling the example sketches from FabGL.

The first I have tried was the VIC20 with the partition Scheme Huge App. The compilation finished with the error:

`/tmp/.arduinoIDE-unsaved2024611-1038633-wjo2zo.5ue8c/VIC20/VIC20.ino:38:17: note: '#pragma message: This sketch requires Tools->Partition Scheme = Huge APP'
   38 | #pragma message "This sketch requires Tools->Partition Scheme = Huge APP"
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/tmp/.arduinoIDE-unsaved2024611-1038633-wjo2zo.5ue8c/VIC20/src/machine.cpp: In member function 'void Machine::syncTime()':
/tmp/.arduinoIDE-unsaved2024611-1038633-wjo2zo.5ue8c/VIC20/src/machine.cpp:246:5: error: 'ets_delay_us' was not declared in this scope; did you mean 'sys_delay_ms'?
  246 |     ets_delay_us(delayNS / 1000);
      |     ^~~~~~~~~~~~
      |     sys_delay_ms

exit status 1

Compilation error: 'ets_delay_us' was not declared in this scope; did you mean 'sys_delay_ms'?

I tried to compile the Atari8800 and it finished with:

`/home/roxo/Arduino/libraries/FabGL/src/comdrivers/tsi2c.cpp: In static member function 'static void fabgl::I2C::commTaskFunc(void*)':
/home/roxo/Arduino/libraries/FabGL/src/comdrivers/tsi2c.cpp:232:89: error: invalid conversion from 'uint32_t*' {aka 'long unsigned int*'} to 'size_t*' {aka 'unsigned int*'} [-fpermissive]
  232 |       job->lastError = i2cRead(i2c, job->address, job->buffer, job->size, job->timeout, &job->readCount);
      |                                                                                         ^~~~~~~~~~~~~~~
      |                                                                                         |
      |                                                                                         uint32_t* {aka long unsigned int*}
In file included from /home/roxo/.arduino15/packages/esp32/hardware/esp32/3.0.2/cores/esp32/esp32-hal.h:80,
                 from /home/roxo/Arduino/libraries/FabGL/src/comdrivers/tsi2c.h:40,
                 from /home/roxo/Arduino/libraries/FabGL/src/comdrivers/tsi2c.cpp:33:
/home/roxo/.arduino15/packages/esp32/hardware/esp32/3.0.2/cores/esp32/esp32-hal-i2c.h:36:114: note:   initializing argument 6 of 'esp_err_t i2cRead(uint8_t, uint16_t, uint8_t*, size_t, uint32_t, size_t*)'
   36 | esp_err_t i2cRead(uint8_t i2c_num, uint16_t address, uint8_t *buff, size_t size, uint32_t timeOutMillis, size_t *readCount);
      |                                                                                                          ~~~~~~~~^~~~~~~~~
/home/roxo/Arduino/libraries/FabGL/src/comdrivers/serialport.cpp: In member function 'void fabgl::SerialPort::setup(int, uint32_t, int, char, float, fabgl::FlowControl, bool)':
/home/roxo/Arduino/libraries/FabGL/src/comdrivers/serialport.cpp:241:3: error: 'gpio_matrix_in' was not declared in this scope
  241 |   gpio_matrix_in(m_rxPin, URXD_IN_IDX[m_idx], m_inverted);
      |   ^~~~~~~~~~~~~~
/home/roxo/Arduino/libraries/FabGL/src/comdrivers/serialport.cpp:242:3: error: 'gpio_matrix_out' was not declared in this scope; did you mean 'gpio_iomux_out'?
  242 |   gpio_matrix_out(m_txPin, UTXD_OUT_IDX[m_idx], m_inverted, false);
      |   ^~~~~~~~~~~~~~~
      |   gpio_iomux_out
/home/roxo/Arduino/libraries/FabGL/src/comdrivers/serialport.cpp: In member function 'void fabgl::SerialPort::sendBreak(bool)':
/home/roxo/Arduino/libraries/FabGL/src/comdrivers/serialport.cpp:343:5: error: 'gpio_matrix_out' was not declared in this scope; did you mean 'gpio_iomux_out'?
  343 |     gpio_matrix_out(m_txPin, MATRIX_DETACH_OUT_SIG, m_inverted, false);
      |     ^~~~~~~~~~~~~~~
      |     gpio_iomux_out
/home/roxo/Arduino/libraries/FabGL/src/comdrivers/serialport.cpp:347:5: error: 'gpio_matrix_out' was not declared in this scope; did you mean 'gpio_iomux_out'?
  347 |     gpio_matrix_out(m_txPin, UTXD_OUT_IDX[m_idx], m_inverted, false);
      |     ^~~~~~~~~~~~~~~
      |     gpio_iomux_out

exit status 1

Compilation error: exit status 1

`
I have tried to compile the following:

ANSI Terminal, Audio, ClassicRacer, ColisionDetection, DirectVGA, Hardware Test and Loopback Terminal

All of them finished the compilation with errors, the first one being:

`/home/roxo/Arduino/libraries/FabGL/src/comdrivers/tsi2c.cpp: In static member function 'static void fabgl::I2C::commTaskFunc(void*)':

/home/roxo/Arduino/libraries/FabGL/src/comdrivers/tsi2c.cpp:232:89: error: invalid conversion from 'uint32_t*' {aka 'long unsigned int*'} to 'size_t*' {aka 'unsigned int*'} [-fpermissive]
  232 |       job->lastError = i2cRead(i2c, job->address, job->buffer, job->size, job->timeout, &job->readCount);
      |                                                                                         ^~~~~~~~~~~~~~~
      |                                                                                         |
      |                                                                                         uint32_t* {aka long unsigned int*}

Am I missing something? Perhaps the version of the Arduino IDE?

Thanks in advance.

I ust have no clue for the next steps.