ROM Won't Load

[32teeth]

ROM (Any) Won't Load

Including flash or sd card

To reproduce

Edit the gbfiles.h file and comment out the three defines (since i don't have a bios file)

/* Uncomment this to include a fallback ROM */
// #define USE_INTERNAL_ROM
// #define USE_INTERNAL_BIOS
// #define USE_INTERNAL_BORDER

Attempt to load from sd card - fails

Flashed to M5 Directly as per partition table - fails

python (path to my esp-idf toolchain)/esptool.py --chip esp32 --port /dev/cu.SLAB_USBtoUART --baud 2000000 --before default_reset --after hard_reset write_flash -z --flash_mode dio --flash_freq 80m --flash_size detect 0x110000 dinosofflineadventure.gb

[Ryuzaki-MrL]

Does the "Flashing ROM..." progress bar show up when loading from SD card? If not, then you need to flash the boot_app0, bootloader, and partitions_espeon files.

[32teeth]

thanks @Ryuzaki-MrL

I have tried

1. compiling and flashing from arduino source
2. flashing directly using esptools

both methods produce same results

I never see the message for "Flashing ROM..."

[Ryuzaki-MrL]

The command should look like this:

esptool.py --chip esp32 --port /dev/cu.SLAB_USBtoUART --baud 2000000 --before default_reset --after hard_reset write_flash -z --flash_mode dio --flash_freq 80m --flash_size detect 0x1000 bootloader_0x1000.bin 0xe000 boot_app0_0xe000.bin 0x8000 partitions_espeon_0x8000.bin 0x10000 espeon.ino.m5stack_core_esp32_0x10000.bin

If it still doesn't work, try using M5Burner. You can import the Espeon.zip file into it and have it flash everything. Right now I don't have my M5Stack at hand.

[32teeth]

I'm quite familiar with ESP-IDF, the example i posted was adding a rom directly into flash at address 0x110000 as per the provisioned partition csv, as you see in the first pics i have it up and running

the problem may be with the missing bios files

[Ryuzaki-MrL]

The BIOS is entirely optional, the emulator sets the memory accordingly if it's not present. The "rom_init failed" only triggers when the "esp_partition" API can't find the ROM partition, that is, when the file "partitions_espeon_0x8000.bin" is not flashed onto address 0x8000. That's why the "Flashing ROM..." screen doesn't show up. Manually flashing a ROM at 0x110000 will do nothing if the API doesn't know what that address is supposed to be.

[32teeth]

The command should look like this:

esptool.py --chip esp32 --port /dev/cu.SLAB_USBtoUART --baud 2000000 --before default_reset --after hard_reset write_flash -z --flash_mode dio --flash_freq 80m --flash_size detect 0x1000 bootloader_0x1000.bin 0xe000 boot_app0_0xe000.bin 0x8000 partitions_espeon_0x8000.bin 0x10000 espeon.ino.m5stack_core_esp32_0x10000.bin

If it still doesn't work, try using M5Burner. You can import the Espeon.zip file into it and have it flash everything. Right now I don't have my M5Stack at hand.

espeon.ino.m5stack_core_esp32_0x10000.bin is not in your repo?

[Ryuzaki-MrL]

I do not commit the executable, but I assume you have compiled it yourself. I also provide a compiled binary at the releases page, of the last version I was able to test.

[haverdude]

Using the command you supplied above, I can get the precompiled binaries to run, and I can load a ROM and it works (except I have no joypad input because I don't have one of those).

I added support for an IR controller I had laying around and want to try that.

I can compile and program the source from the Arduino IDE, but the code faints when I try to load the same ROM I can play with the pre-compiled binaries.

To create a binary of my own, so I could upload my code in place of the pre-compiled binary, I followed the directions here: https://randomnerdtutorials.com/bin-binary-files-sketch-arduino-ide/ which did, in fact, create a binary from my build.

In the esptool.py command, I substituted this binary, replacing the espeon.ino.m5stack_core_esp32_0x10000.bin precompiled binary. Everything seems to program correctly, I can see the menu, but choosing the same that ROM that ran with the pre-compiled binary does not work, it just drops me back to the menu. I can see it write something to the screen, but it gets overwritten immediately.

Is there anything special in the board setup or anything else you have to do to get this to work? BTW, one of the links in your README.md file - the one that talks about setting up the environment - is dead. Apparently Espressif moved the document you were referring to.

[haverdude]

Update - I don't know what I changed, but this is what happens when I load my code instead of the precompiled binaries, After uploading, I get the menu, as normal... Choosing the GB file, I get this....

[Ryuzaki-MrL]

That's odd. It's showing a blank gameboy screen, so that means the emulator is running (no error screen was triggered). There's two possibilities:

1. The modified code might have broken something on the emulator side.
2. The ROM is not being properly copied to the correct partition for whatever reason.

Also, I found the docs again: https://docs.m5stack.com/#/en/arduino/arduino_development Thanks for pointing out, I'll update the README.

[haverdude]

I backed out all my changes and the behavior is the same.

I'll check the load address, but that shouldn't have changed - I do have to use esptool.py though, otherwise I can't even load the ROM.

One thing I noticed is that my image, even after enabling debug (later Arduino IDF integrations have this turned off by default), is much smaller than yours and I don't know what's causing that.

Maybe you're including a BIOS and/or border in your binaries?

On Thu, Jul 30, 2020, 6:07 AM Lázaro Vieira [email protected] wrote:

That's odd. It's showing a blank gameboy screen, so that means the emulator is running (no error screen was triggered). There's two possibilities:

1. The modified code might have broken something on the emulator side.
2. The ROM is not being properly copied to the correct partition for whatever reason.

Also, I found the docs again: https://docs.m5stack.com/#/en/arduino/arduino_development Thanks for pointing out, I'll update the README.

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[linkov]

Anyone facing this issue, you need to run esptool.py --chip esp32 --port /dev/cu.usbserial-01B9087E erase_flash