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I am developing an ESP32-C3-WROOM custom board, but when I tried to flash the chip using UART (FT232D USB-TTL) and Arduino IDE, I got the message "A fatal error occurred: Failed to connect to ESP32-C3: Timed out waiting for packet header". I have tried pulling up GPIO 8, but no results.

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ocrdu
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Nirmal Mathew Theruvil
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  • Do you receive any serial data from the esp when you power it up in bootloader mode? Use a terminal program to verify. Pcb layout is fairly critical as the esp can draw high peak currents. The location and spec of the 10uF cap is important. It needs to be a 25V or greater in order to get adequate capacitance due to the dc bias derating. – Kartman Aug 11 '22 at 13:37
  • yes i got some messages from esp chip like 10:30:06.132 -> ESP-ROM:esp32s2-rc4-20191025 10:30:06.132 -> Build:Oct 25 2019 10:30:06.132 -> rst:0x1 (POWERON),boot:0x8 (SPI_FAST_FLASH_BOOT) 10:30:06.172 -> SPIWP:0xee 10:30:06.172 -> mode:DIO, clock div:1 10:30:06.172 -> load:0x3ffe6100,len:0x510 10:30:06.172 -> load:0x4004c000,len:0xa50 10:30:06.172 -> load:0x40050000,len:0x28bc 10:30:06.172 -> entry 0x4004c18c @Kartman – Nirmal Mathew Theruvil Aug 16 '22 at 05:00

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