WhyCan Forum(哇酷开发者社区)

如题，在设计和焊接好自己设计的板子后，把uboot烧到ram里面，串口没有信息输出，但是没有收到，主控焊接情况如下（应该没有虚焊）:|

引脚焊接情况

晶振情况

进入SUNXI-FEL

求助大佬们

U-Boot SPL 2018.01 (Aug 29 2023 - 16:17:21)
DRAM: 64 MiB
Trying to boot from sunxi SPI

U-Boot 2018.01 (Aug 29 2023 - 16:17:21 +0800) Allwinner Technology

CPU:   Allwinner F Series (SUNIV)
Model: Lichee Pi Nano
DRAM:  64 MiB
MMC:   SUNXI SD/MMC: 0
SPI-NAND: MX35LF1GE4AB is found size: 128MB.
*** Warning - bad CRC, using default environment

In:    serial@1c25000
Out:   serial@1c25000
Err:   serial@1c25000
Net:   No ethernet found.
starting USB...
No controllers found
Hit any key to stop autoboot:  0
SPI-NAND: MX35LF1GE4AB is found size: 128MB.
SPI-NAND: 5242880 bytes @ 0x110000 Read: OK
SPI-NAND: 65536 bytes @ 0x100000 Read: OK
## Flattened Device Tree blob at 80c00000
   Booting using the fdt blob at 0x80c00000
   Loading Device Tree to 816fb000, end 816fff0a ... OK

Starting kernel ...