2.1.1 - Error 2 on flashing the firmware (Wemos D1)

[owah]

Hello,

I have an issue similar to #149, namely that I can't upload firmware to a Wemos D1 mini anymore, after upgrading.

Checking size .pioenvs/d1_mini/firmware.elf
Memory Usage -> http://bit.ly/pio-memory-usage
DATA: [==== ] 35.9% (used 29436 bytes from 81920 bytes)
PROGRAM: [==== ] 38.4% (used 401576 bytes from 1044464 bytes)
Creating BIN file ".pioenvs/d1_mini/firmware.bin" using ".pioenvs/d1_mini/firmware.elf"
Configuring upload protocol...
AVAILABLE: espota, esptool
CURRENT: upload_protocol = esptool
Looking for upload port...
Auto-detected: /dev/cu.usbserial-1460
Uploading .pioenvs/d1_mini/firmware.bin
esptool.py v2.6
Serial port /dev/cu.usbserial-1460
Connecting....
Chip is ESP8266EX
Features: WiFi
Uploading stub...
Running stub...
Stub running...
Changing baud rate to 921600
Changed.
Configuring flash size...

A fatal error occurred: Invalid head of packet (0xE0)
*** [upload] Error 2

If I manually change the upload_speed in platformio.ini to: upload_speed = 115200 then I get a successful upload:

Uploading stub...
Running stub...
Stub running...
Configuring flash size...
Auto-detected Flash size: 4MB
Compressed 405728 bytes to 294493...
Wrote 405728 bytes (294493 compressed) at 0x00000000 in 28.6 seconds (effective 113.4 kbit/s)...
Hash of data verified.

Leaving...
Hard resetting via RTS pin...

My toolchain is the current toolchain (2.1.1)

[owah]

So I just noticed there was an update released a few minutes ago. I have updated my toolchain:

Updating espressif8266 @ 2.2.0 [Up-to-date]
Updating tool-esptoolpy @ 1.20600.0 [Up-to-date]
Updating tool-mkspiffs @ 1.200.0 [Up-to-date]
Updating tool-esptool @ 1.413.0 [Up-to-date]
Updating framework-arduinoespressif8266 @ 2.20502.0 [Up-to-date]
Updating toolchain-xtensa @ 2.40802.190218 [Up-to-date]

But the firmware uploading issue persists

[pfeerick]

Can I ask why 115200 was picked? As noted in both the arduino-esp8266 PR changing to esptool.py, and the esptool repo, 460800 seemed to be a reliable default, until they can work out why 921600 doesn't work (but 1000000 does).

[Orel-A]

115200 is too slow! minimum should be 460800 as in line with Arduino library. esp-tool is already in version 3.0