Esptool 4.6 not reliable on my flash setup.

[miky2k]

I try differend baudrate but not seem rs232 related

/home/user/.arduino15/packages/esp8266/hardware/esp8266/2.0.0/../../../tools/esptool/0.4.6/esptool -vv -cd none -cb 460800 -cp /dev/ttyUSB0 -ca 0x100000 -cf /tmp/build8924734518208192267.tmp/esp8266-WebServices.spiffs.bin esptool v0.4.6 - (c) 2014 Ch. Klippel ck@atelier-klippel.de setting board to none setting baudrate from 115200 to 460800 setting port from /dev/ttyUSB0 to /dev/ttyUSB0 setting address from 0x00000000 to 0x00100000 espcomm_upload_file stat /tmp/build8924734518208192267.tmp/esp8266-WebServices.spiffs.bin success opening port /dev/ttyUSB0 at 460800 tcgetattr tcsetattr serial open opening bootloader resetting board trying to connect setting character timeout 0 done setting character timeout 1 done espcomm_send_command: sending command header espcomm_send_command: sending command payload espcomm_send_command: receiving 2 bytes of data espcomm_send_command: receiving 2 bytes of data espcomm_send_command: receiving 2 bytes of data espcomm_send_command: receiving 2 bytes of data espcomm_send_command: receiving 2 bytes of data espcomm_send_command: receiving 2 bytes of data espcomm_send_command: receiving 2 bytes of data espcomm_send_command: receiving 2 bytes of data espcomm_open Uploading 3125248 bytes from /tmp/build8924734518208192267.tmp/esp8266-WebServices.spiffs.bin to flash at 0x00100000 erasing flash size: 2fb000 address: 100000 first_sector_index: 256 total_sector_count: 763 head_sector_count: 16 adjusted_sector_count: 747 adjusted_size: 2eb000 espcomm_send_command: sending command header espcomm_send_command: sending command payload setting timeout 10000 setting character timeout 100 done setting timeout 1 setting character timeout 1 done espcomm_send_command: receiving 2 bytes of data writing flash ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................warning: espcomm_send_command: didn't receive command response warning: espcomm_send_command(FLASH_DOWNLOAD_DATA) failed warning: espcomm_send_command: didn't receive command response closing bootloader

but sometimes it stops immediately with FLASH_DOWNLOAD_BEGIN

I suppose that my flash is slow and some timeout occur during writing data or starting writing, sketck and flash work well , only spiffs 3M stop randomly upload.

[Links2004]

have you tried using less then 460800 baud?

[igrr]

Failure at FLASH_DOWNLOAD_BEGIN stage usually has to do with flash erase time exceeding the 10 second timeout. This happens when you try to upload a large (3M) spiffs binary.

If it fails somewhere in the middle of the process, then it might indicate communication errors. Capturing serial data on both TX and RX lines using a logic analyzer might help gain some insight into this type of issue.

[miky2k]

it would be possible to split esptool in two stage : flash erase , and programming with the possibility to restart/recover from last good block (with only this block erase if necessary )? Transfer 3Mb of data without any error correction/recovery its very hard even with perfect serial adapter, shor wires , and no software bug!!!