ESP32C3，“hello world”例程，上电重复打印如下内容：

[Ami731988]

SPIWP:0xee
mode:DIO, clock div:1
load:0x3fcd6100,len:0x18b8
load:0x403ce000,len:0x8d4
load:0x403d0000,len:0x2dc0
Checksum failure. Calculated 0xc4 stored 0xc5
ets_main.c 333
ESP-ROM:esp32c3-api1-20210207
Build:Feb 7 2021
rst:0x7 (TG0WDT_SYS_RST),boot:0xd (SPI_FAST_FLASH_BOOT)
Saved PC:0x40047ed2

[ryanwen]

请问你的问题解决了吗？我找了各种固件来刷都是报checksum failure，包括AI官方出厂固件，micropython固件。。。连flash_download_tool都换过了，都没解决，看《安信可ESP-C3-32S规格书V1.1》说GPIO20作为U1RXD使用时需要在外部增加一个上拉电阻，怀疑刷写固件时由于没有这个上拉电阻会造成错误刷写同时flash_download_tool没有校验刷写结果，所以连了一个10K电阻从RX到3V3依旧没有解决

ESP-ROM:esp32c3-ap?ESP-ROM:esp32c?ESP-ROM:esp32c3-api1-20210207
Build:Feb 7 2021
rst:0x1 (POWERON),boot:0xc (SPI_FAST_FLASH_BOOT)
SPIWP:0xee
mode:DIO, clock div:1
load:0x3fcd6100,len:0xe3c
load:0x00000000,len:0x0
load:0x00000000,len:0x0
Checksum failure. Calculated 0xef stored 0x00
ets_main.c 333
ESP-ROM:esp32c3-api1-20210207
Build:Feb 7 2021
rst:0x7 (TG0WDT_SYS_RST),boot:0xc (SPI_FAST_FLASH_BOOT)
Saved PC:0x40047ed2
SPIWP:0xee
mode:DIO, clock div:1
load:0x3fcd6100,len:0xe3c
load:0x00000000,len:0x0
load:0x00000000,len:0x0
Checksum failure. Calculated 0xef stored 0x00
ets_main.c 333
ESP-ROM:esp32c3-api1-20210207
Build:Feb 7 2021
rst:0x7 (TG0WDT_SYS_RST),boot:0xc (SPI_FAST_FLASH_BOOT)
Saved PC:0x40047ed2
SPIWP:0xee
mode:DIO, clock div:1
load:0x3fcd6100,len:0xe3c
load:0x00000000,len:0x0
load:0x00000000,len:0x0
Checksum failure. Calculated 0xef stored 0x00
ets_main.c 333
ESP-ROM:esp32c3-api1-20210207
Build:Feb 7 2021
rst:0x12 (SUPER_WDT_RST),boot:0xc (SPI_FAST_FLASH_BOOT)
SPIWP:0xee
mode:DIO, clock div:1
load:0x3fcd6100,len:0xe3c
load:0x00000000,len:0x0
load:0x00000000,len:0x0
Checksum failure. Calculated 0xef stored 0x00
ets_main.c 333

[ESP_LJH]

想问下使用的是官方模组还是自制的模组？电流是否足够，flash 的管脚有没有确认没被占用？