Search found 23 matches

by mikronauts
Tue Sep 29, 2020 7:02 pm
Forum: Documentation
Topic: ESP32 instruction set or assembly (ASM) programming docs?
Replies: 2
Views: 161

Re: ESP32 instruction set or assembly (ASM) programming docs?

Yes, this is very frustrating. I have a similar issue if I want to try to port the VM for my basic compiler. You could write it in C, once it works save assembly code, edit, assmble it, make sure it still works. Using old docs, improve and replace, keep re-testing. This sucks, but until proper docs ...
by mikronauts
Mon Aug 17, 2020 8:38 pm
Forum: General Discussion
Topic: esp32-s2: Invalid head of packet (0xC4)
Replies: 4
Views: 252

Re: esp32-s2: Invalid head of packet (0xC4)

Try reducing the baud rate ... I have to drop to 460kbps on some third party modules when I get that message. You can also try dropping the flash to 40Mhz.
by mikronauts
Fri Aug 14, 2020 4:45 am
Forum: General Discussion
Topic: Running a MCP23017 on 5V
Replies: 13
Views: 1550

Re: Running a MCP23017 on 5V

I would be VERY surprised if the ADS1115 would not work @ 1.7Mhz i2c clock. Thanks you very much for all your valuable comments. My I2C: ADS1115 : 100kHz, 400kHz, 3.4MHz ADS1115 : 100kHz, 400kHz, 3.4MHz MCP23017 :100kHz, 400kHz, 1.7MHz I don't want to apply several I2C bus's, so I will have to limit...
by mikronauts
Thu Mar 19, 2020 3:22 pm
Forum: Documentation
Topic: Documentation Requests/Feedback
Replies: 75
Views: 102212

Re: Documentation Requests/Feedback

Full assembly language reference please. I have a nice optimizing basic compiler I wrote a few years ago, and I would like to port it to the Esp32. First pass would be an efficient byte code interpreter. Second pass would be a native code optimizing compiler. Without having the assembly language ref...
by mikronauts
Fri Feb 28, 2020 8:02 pm
Forum: ESP32 Arduino
Topic: issue: esp32 board support won't install on ubuntu 18.04lts arm
Replies: 0
Views: 1420

issue: esp32 board support won't install on ubuntu 18.04lts arm

"Tool esptool_py is not available for your operating system."

I still get the error after manually installing esptool with pip.

esp32 arduino package 1.0.4
ubuntu 18.04LTS
Odroid C2
by mikronauts
Fri Feb 28, 2020 3:06 pm
Forum: Hardware
Topic: Better ADC i/o accuracy ESP32 boards?
Replies: 4
Views: 2150

Re: Better ADC i/o accuracy ESP32 boards?

unfortunately yes.
flaming_crossbow wrote:
Thu Feb 27, 2020 8:39 pm
Do you mean that it is a chip problem and not a pcb problem?
by mikronauts
Thu Feb 27, 2020 3:47 pm
Forum: Hardware
Topic: Better ADC i/o accuracy ESP32 boards?
Replies: 4
Views: 2150

Re: Better ADC i/o accuracy ESP32 boards?

Just use external adc.

Better esp32 adc will need a new esp32 version.
by mikronauts
Sat Feb 15, 2020 12:55 am
Forum: ESP32 Arduino
Topic: non stop reboot loop keeps usb locked
Replies: 2
Views: 1033

Re: non stop reboot loop keeps usb locked

Thanks. Power cycling the computer just got me running. check gpio pins https://github.com/espressif/esptool/wiki/ESP32-Boot-Mode-Selection if remove any connected hardware then programming too bad? If use serial monitor when programming, then serial monitor lock the serial port, and esptool can't c...
by mikronauts
Sat Feb 15, 2020 12:07 am
Forum: ESP32 Arduino
Topic: non stop reboot loop keeps usb locked
Replies: 2
Views: 1033

non stop reboot loop keeps usb locked

wemos d1 r32 esptool says usb not available, output from serial monitor follows: rst:0x3 (SW_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT) configsip: 0, SPIWP:0xee clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00 mode:DIO, clock div:1 load:0x3fff0018,len:4 load:0x3fff001c,len:1044 lo...
by mikronauts
Wed Feb 05, 2020 8:53 pm
Forum: ESP32 Arduino
Topic: SUMP Compatible ESP32 Logic Analyzer with RLE
Replies: 39
Views: 20454

Re: SUMP Compatible ESP32 Logic Analyzer

Excellent work! You must be sampling faster than 20Mhz to see a 20Mbps uart... Hello. I just published my code on github. It's ESP32 Logic Analyzer which is SUMP compatible 16Bit captures up to 20Mhz using I2S DMA. I am able to see 20 Mbps UART communication with it using PulseView/Sigrok. Unfortuna...

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