Search found 90 matches

by HermannSW
Sun Jan 07, 2018 11:14 pm
Forum: General Discussion
Topic: VGA output: Can SPI make and send infinite circular buffer?
Replies: 12
Views: 5785

Re: VGA output: Can SPI make and send infinite circular buffer?

Nice project. I did a lot of experiments with DueVGA: https://github.com/stimmer/DueVGA A much less capable microcontroller (84MHz Arduino Due) with much less memory (96KB ram). You may want to lookup stimmer's DueVGA code on Github for how he did. Allows for 1024x675 monochrome and 320x240 color, o...
by HermannSW
Sun Jan 07, 2018 7:07 pm
Forum: General Discussion
Topic: Micropython as debug shell for ESP32 (and its OLED)
Replies: 13
Views: 15790

Re: Micropython as debug shell for ESP32 (and its OLED)

I did solder headers to one of my ESP32 modules and used the still flashed Micropython to verify the pins: http://forum.arduino.cc/index.php?topic=495555.msg3553490#msg3553490 Only pins left where I need to find out how to test are the non-numbered pins SVP, S1, CM, S0, CL, SND, SVN, RX, TX, all oth...
by HermannSW
Fri Nov 10, 2017 10:50 am
Forum: General Discussion
Topic: Micropython as debug shell for ESP32 (and its OLED)
Replies: 13
Views: 15790

Re: Micropython as debug shell for ESP32 (and its OLED)

I wanted to get a wireless ESP32 debug solution and tried Telnet servers in MicroPython for that. Unfortunately there is an issue with "dupterm()" not being implemented in ESP32 MicroPython, see this thread: https://forum.micropython.org/viewtopic.php?f=18&t=3997 In this thread user loboris pointed ...
by HermannSW
Mon Oct 30, 2017 8:57 pm
Forum: General Discussion
Topic: How to execute ROM Basic after it was disabled via efuse?
Replies: 14
Views: 5450

Re: How to execute ROM Basic after it was disabled via efuse?

Thanks for that information, which confirms that ROM Basic cannot be ESP32 debug shell.

And thanks to WiFive, I tried Micorpython and it works great, see this posting:
viewtopic.php?f=2&t=3476#p16515
Image
by HermannSW
Mon Oct 30, 2017 8:55 pm
Forum: General Discussion
Topic: Micropython as debug shell for ESP32 (and its OLED)
Replies: 13
Views: 15790

Micropython as debug shell for ESP32 (and its OLED)

In other thread (see here ) I asked how to run built in ROM Basic. My intent was to use Basic as debug shell for eg. easy testing of pins after soldering. On Arduinos I use http://bitlash.net/ for that, and for Raspberry Pi Zero I use my Android as Terminal https://www.raspberrypi.org/forums/viewtop...
by HermannSW
Sun Oct 29, 2017 12:14 pm
Forum: General Discussion
Topic: How to execute ROM Basic after it was disabled via efuse?
Replies: 14
Views: 5450

Re: How to execute ROM Basic after it was disabled via efuse?

No what I meant was use the micropython shell to run your debug commands instead of using rombasic Thanks, I will try micropython shell later after having success with ROM Basic. (You can check this out yourself: the entry point for the interpreter is at 0x4005a980) Thanks for the ROM entry address...
by HermannSW
Fri Oct 27, 2017 1:58 pm
Forum: General Discussion
Topic: How to execute ROM Basic after it was disabled via efuse?
Replies: 14
Views: 5450

Re: How to execute ROM Basic after it was disabled via efuse?

I tried CM pin and was not able to start Basic. When I connect GND and CM pin, the currently running application stops sending output (GetChipID sketch with esp32-arduino, with change of '\n' to '\r\n' for minicom). Then, when I trigger reset pi, endless reboot messages happen (in minicom). I tried ...
by HermannSW
Fri Oct 27, 2017 10:19 am
Forum: General Discussion
Topic: How to execute ROM Basic after it was disabled via efuse?
Replies: 14
Views: 5450

Re: How to execute ROM Basic after it was disabled via efuse?

If you don't mind flashing a firmware you could try (one of the) micropython ports with REPL. Do you have a link? Will it be possible after flashing micropython firmware, to use that board with Arduino IDE/arduino-esp32 afterwards? Do I have to flash with esptool? (I did that long ago when I played...
by HermannSW
Fri Oct 27, 2017 10:13 am
Forum: General Discussion
Topic: How to execute ROM Basic after it was disabled via efuse?
Replies: 14
Views: 5450

Re: How to execute ROM Basic after it was disabled via efuse?

Thanks for your detailed response. GPIO12 actually isn't that great of a way to get into Basic... Good to know. You may have more success grounding e.g. the CMD pin. Which CMD pin do you refer to, SD_CMD? http://stamm-wilbrandt.de/en/forum/esp32.pinout.png May it be the CM pin on left middle of ESP3...
by HermannSW
Fri Oct 27, 2017 7:31 am
Forum: General Discussion
Topic: How to execute ROM Basic after it was disabled via efuse?
Replies: 14
Views: 5450

How to execute ROM Basic after it was disabled via efuse?

Hi, I am new to this forum, but used ESP32 dev board with built in OLED a lot (via Arduino IDE): https://forum.arduino.cc/index.php?topic=495555.0 From this Hackaday posting I learned about ESP32 ROM Basic: https://hackaday.com/2016/10/27/basic-interpreter-hidden-in-esp32-silicon/ I tried what was d...

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