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 ...

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.

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 ...

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 ...

"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

unfortunately yes.

Do you mean that it is a chip problem and not a pcb problem?

Just use external adc.

Better esp32 adc will need a new esp32 version.

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 ...

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 ...

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 ...