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esptool库可以为esp32的开发板烧录新的固件，但是如果为了烧录固件就要装esp-idf软件包，甚至需要用make编译安装很久，实在太费时费力了！
好消息就是，esp提供了python的esptool库，这样只要使用pip安装上这个工具库，就可以使用了，非常简单方便。
pip安装esptool库：
pip install esptool安装完成后显示：
Successfully installed argcomplete-3.5.1 bitarray-2.9.3 bitstring-4.2.3 ecdsa-0.19.0 esptool-4.8.1 intelhex-2.3.0 pyserial-3.5 reedsolo-1.7.0
这时候就可以使用esptool了，不过跟其它库不一样的是，执行命令需要带上py后嘴，也就是
需要执行
esptool.py --help
esptool.py --help
usage: esptool [-h][--chip {auto,esp8266,esp32,esp32s2,esp32s3beta2,esp32s3,esp32c3,esp32c6beta,esp32h2beta1,esp32h2beta2,esp32c2,esp32c6,esp32c61,esp32c5,esp32c5beta3,esp32h2,esp32p4}][--port PORT] [--baud BAUD][--port-filter PORT_FILTER][--before {default_reset,usb_reset,no_reset,no_reset_no_sync}][--after {hard_reset,soft_reset,no_reset,no_reset_stub}][--no-stub] [--trace][--override-vddsdio [{1.8V,1.9V,OFF}]][--connect-attempts CONNECT_ATTEMPTS]{load_ram,dump_mem,read_mem,write_mem,write_flash,run,image_info,make_image,elf2image,read_mac,chip_id,flash_id,read_flash_status,write_flash_status,read_flash,verify_flash,erase_flash,erase_region,read_flash_sfdp,merge_bin,get_security_info,version}...esptool.py v4.8.1 - Espressif chips ROM Bootloader Utilitypositional arguments:{load_ram,dump_mem,read_mem,write_mem,write_flash,run,image_info,make_image,elf2image,read_mac,chip_id,flash_id,read_flash_status,write_flash_status,read_flash,verify_flash,erase_flash,erase_region,read_flash_sfdp,merge_bin,get_security_info,version}Run esptool.py {command} -h foradditional helpload_ram Download an image to RAM and executedump_mem Dump arbitrary memory to diskread_mem Read arbitrary memory locationwrite_mem Read-modify-write to arbitrary memorylocationwrite_flash Write a binary blob to flashrun Run application code in flashimage_info Dump headers from a binary file(bootloader or application)make_image Create an application image from binaryfileself2image Create an application image from ELF fileread_mac Read MAC address from OTP ROMchip_id Read Chip ID from OTP ROMflash_id Read SPI flash manufacturer and device IDread_flash_status Read SPI flash status registerwrite_flash_status Write SPI flash status registerread_flash Read SPI flash contentverify_flash Verify a binary blob against flasherase_flash Perform Chip Erase on SPI flasherase_region Erase a region of the flashread_flash_sfdp Read SPI flash SFDP (Serial FlashDiscoverable Parameters)merge_bin Merge multiple raw binary files into asingle file for later flashingget_security_info Get some security-related dataversion Print esptool versionoptions:-h, --help show this help message and exit--chip {auto,esp8266,esp32,esp32s2,esp32s3beta2,esp32s3,esp32c3,esp32c6beta,esp32h2beta1,esp32h2beta2,esp32c2,esp32c6,esp32c61,esp32c5,esp32c5beta3,esp32h2,esp32p4}, -c {auto,esp8266,esp32,esp32s2,esp32s3beta2,esp32s3,esp32c3,esp32c6beta,esp32h2beta1,esp32h2beta2,esp32c2,esp32c6,esp32c61,esp32c5,esp32c5beta3,esp32h2,esp32p4}Target chip type--port PORT, -p PORT Serial port device--baud BAUD, -b BAUD Serial port baud rate used whenflashing/reading--port-filter PORT_FILTERSerial port device filter, can bevid=NUMBER, pid=NUMBER, name=SUBSTRING--before {default_reset,usb_reset,no_reset,no_reset_no_sync}What to do before connecting to the chip--after {hard_reset,soft_reset,no_reset,no_reset_stub}, -a {hard_reset,soft_reset,no_reset,no_reset_stub}What to do after esptool.py is finished--no-stub Disable launching the flasher stub, onlytalk to ROM bootloader. Some featureswill not be available.--trace, -t Enable trace-level output of esptool.pyinteractions.--override-vddsdio [{1.8V,1.9V,OFF}]Override ESP32 VDDSDIO internal voltageregulator (use with care)--connect-attempts CONNECT_ATTEMPTSNumber of attempts to connect, negativeor 0 for infinite. Default: 7.