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syssi / esphome-jk-bms

ESPHome component to monitor and control a Jikong Battery Management System (JK-BMS) via UART-TTL or BLE
Apache License 2.0
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B2A20S20P fault connectionn with rs485 incompatible #356

Closed alesssionico closed 11 months ago

alesssionico commented 12 months ago

Hello, I tried to install as per the guide https://github.com/syssi/esphome-jk-bms/blob/main/esp32-example.yaml everything is installed correctly, using Raspberry p3+ usb module with FTDI chip and jk module RS485. After installing everything following the installation wizard esp + Raspberry, enter the MQTT user and password, SSD and WiFi password and although everything is successful, this error string comes out

`SUCCESS] Took 1900.72 seconds ======================== INFO Successfully compiled program. esptool.py v4.6.2 Serial port /dev/ttyUSB0 Connecting...................................... ERROR Running command failed: Failed to connect to ESP32: No serial data received. For troubleshooting steps visit: https://docs.espressif.com/projects/esptool/en/latest/troubleshooting.html ERROR Please try running esptool.py --before default_reset --after hard_reset --baud 460800 --port /dev/ttyUSB0 --chip esp32 write_flash -z --flash_size detect 0x10000 /data/jk-bms/.pioenvs/jk-bms/firmware.bin 0x1000 /data/jk-bms/.pioenvs/jk-bms/bootloader.bin 0x8000 /data/jk-bms/.pioenvs/jk-bms/partitions.bin 0x9000 /data/jk-bms/.pioenvs/jk-bms/ota_data_initial.bin locally. INFO Upload with baud rate 460800 failed. Trying again with baud rate 115200. esptool.py v4.6.2 Serial port /dev/ttyUSB0 Connecting...................................... ERROR Running command failed: Failed to connect to ESP32: No serial data received. For troubleshooting steps visit: https://docs.espressif.com/projects/esptool/en/latest/troubleshooting.html ERROR Please try running esptool.py --before default_reset --after hard_reset --baud 115200 --port /dev/ttyUSB0 --chip esp32 write_flash -z --flash_size detect 0x10000 /data/jk-bms/.pioenvs/jk-bms/firmware.bin 0x1000 /data/jk-bms/.pioenvs/jk-bms/bootloader.bin 0x8000 /data/jk-bms/.pioenvs/jk-bms/partitions.bin 0x9000 /data/jk-bms/.pioenvs/jk-bms/ota_data_initial.bin locally.

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syssi commented 12 months ago

The flash tool is unable to talk to your ESP32 via /dev/ttyUSB0. Which ESP32 board do you own? Are you able to flash the ESP in general? Which GPIOs did you use to connect the BMS?

alesssionico commented 12 months ago

hi, yes i flashed following the.information step by step when creating a new connection. all components are installed on the home assistant. as a module I'm using a common rs485 to usb converter, so I didn't change the gpio parameters that were set. I attach FTDI converter image

syssi commented 12 months ago

Could you rephrase your feedback and describe your setup in detail? I hope you are using a FTDI based UART-TTL to USB adapter and no RS485 converter. If the converter isn't part of your ESP board please don't forget to boot the ESP into flash mode.

alesssionico commented 12 months ago

you are right, i used FTDI rs485 usb converter and not usb UART. I used a converter I had at home. This is not good because I have no driver install on home assistant or because it can not communicate ? at this point it is better to buy an esp32 module and I solve it since the problem is only of communication. what do you think?

alesssionico commented 12 months ago

Screenshot_20230726_080655 logs_jj_run.txt

syssi commented 11 months ago

You have to use a "UART-TTL to USB" adapter to flash your ESP if it's not equipped with such a chip (ch430, pl2303, etc.). If you buy a ESP32 dev board the microcontroller can be flashed using a micro USB cable without hassle.