widora-AIR esp32 make flash download failed
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hank@pc:~/espressif/myapp$ ls /dev/ttyUSB0
/dev/ttyUSB0
hank@pc:~/espressif/myapp$ make flash
Flashing binaries to serial port /dev/ttyUSB0 (app at offset 0x10000)...
esptool.py v2.0-beta1
Traceback (most recent call last):
File "/home/hank/espressif/esp-idf/components/esptool_py/esptool/esptool.py", line 2261, in <module>
main()
File "/home/hank/espressif/esp-idf/components/esptool_py/esptool/esptool.py", line 2037, in main
esp = chip_class(args.port, initial_baud)
File "/home/hank/espressif/esp-idf/components/esptool_py/esptool/esptool.py", line 166, in init
self._port = serial.serial_for_url(port)
File "/usr/lib/python2.7/dist-packages/serial/init.py", line 78, in serial_for_url
instance.open()
File "/usr/lib/python2.7/dist-packages/serial/serialposix.py", line 278, in open
raise SerialException("could not open port %s: %s" % (self._port, msg))
serial.serialutil.SerialException: could not open port /dev/ttyUSB0: [Errno 13] Permission denied: '/dev/ttyUSB0'
make: *** [flash] 错误 1
hank@fanhang:~/espressif/myapp$ sudo chmod 777 /dev/ttyUSB0
[sudo] password for hank:
hank@fanhang:~/espressif/myapp$ make flash
Flashing binaries to serial port /dev/ttyUSB0 (app at offset 0x10000)...
esptool.py v2.0-beta1
Traceback (most recent call last):
File "/home/hank/espressif/esp-idf/components/esptool_py/esptool/esptool.py", line 2261, in <module>
main()
File "/home/hank/espressif/esp-idf/components/esptool_py/esptool/esptool.py", line 2037, in main
esp = chip_class(args.port, initial_baud)
File "/home/hank/espressif/esp-idf/components/esptool_py/esptool/esptool.py", line 166, in init
self._port = serial.serial_for_url(port)
File "/usr/lib/python2.7/dist-packages/serial/init.py", line 78, in serial_for_url
instance.open()
File "/usr/lib/python2.7/dist-packages/serial/serialposix.py", line 278, in open
raise SerialException("could not open port %s: %s" % (self._port, msg))
serial.serialutil.SerialException: could not open port /dev/ttyUSB0: [Errno 5] Input/output error: '/dev/ttyUSB0'
make: *** [flash] 错误 1刚买的esp32板子，一直没下载成功，这个错误谁遇到过？求大神知道！！！
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检查你的USB口
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尝试使用minicom是否可以打开对应的串口？如果打不开，检查外部硬件连接或者驱动的问题
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make flash 需要有root才可以，因为需要对ttyUSB0进行写入操作，普通用户没有这个权限。所以还有一个另外的解决方案就是chmod 777 /dev/ttyUSB0 这样就不需要root权限了。
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对的，就是这样。