title: esptool: Permission denied
body: <p>I'm trying to compile a project with esp_iot_sdk 1.30 but I get <code>esptool: Permission denied</code> every time I do <code>make</code>.</p>
  
  <pre><code>david@david-VirtualBox:~/myprojects/esp8266-injection-example$ ls -al
  total 36
  drwxrwxr-x  7 david david 4096 אפר 24 20:40 .
  drwxrwxr-x  6 david david 4096 אפר 20 19:38 ..
  drwxrwxr-x  2 david david 4096 אפר 20 16:51 driver
  drwxrwxr-x 12 david david 4096 אפר 24 20:40 esp_iot_sdk_v1.3.0
  drwxrwxr-x  8 david david 4096 אפר 20 16:51 .git
  drwxrwxr-x  3 david david 4096 אפר 20 16:51 include
  -rw-rw-r--  1 david david 4069 אפר 20 19:44 Makefile
  -rw-rw-r--  1 david david  597 אפר 20 16:51 README.md
  drwxrwxr-x  2 david david 4096 אפר 20 16:51 user
  david@david-VirtualBox:~/myprojects/esp8266-injection-example$ sudo make clean
  david@david-VirtualBox:~/myprojects/esp8266-injection-example$ sudo make
  CC driver/uart.c
  CC user/user_main.c
  AR build/app_app.a
  LD build/app.out
  FW firmware/0x00000.bin
  /bin/sh: 1: /home/david/myprojects/esptool: Permission denied
  Makefile:109: recipe for target 'firmware/0x00000.bin' failed
  make: *** [firmware/0x00000.bin] Error 126
  david@david-VirtualBox:~/myprojects/esp8266-injection-example$
  </code></pre>
  
  <p>There is no global variable <code>ESPTOOL</code>, or <code>FW_TOOL</code>:</p>
  
  <pre><code>david@david-VirtualBox:~/myprojects/esp8266-injection-example$ echo $FW_TOOL
  
  david@david-VirtualBox:~/myprojects/esp8266-injection-example$ echo $ESPTOOL
  
  david@david-VirtualBox:~/myprojects/esp8266-injection-example$
  </code></pre>
  
  <p>I'm using esp-open sdk. I downloaded esptool from here: <a href="http://filez.zoobab.com/esp8266/esptool-0.0.2.zip" rel="nofollow noreferrer">http://filez.zoobab.com/esp8266/esptool-0.0.2.zip</a> (according to step 2 here: <a href="https://github.com/cnlohr/ws2812esp8266" rel="nofollow noreferrer">https://github.com/cnlohr/ws2812esp8266</a>) and made that my FW_TOOL.</p>
  
  <p>I'm tying to compile <a href="https://github.com/pulkin/esp8266-injection-example" rel="nofollow noreferrer">this project</a>.</p>
  
  <p>I tried this solution but it didn't work (I tried to do it for the esptool folder in esp-open-sdk, and for the esptool folder I downloaded above) viewtopic.php?p=12465</p>
  
  <p>I tried to do sudo chmod 777 esptool, for both esptool folders, and nothing works for me.</p>
  
  <p>NOTE: If I do <code>esptool.py chip_id</code> I do get a response. Also I was able to burn the <code>blinky</code> demo with the new SDK (that came with esp-open-sdk). So it looks like there is a problem with this SDK specifically...  </p>
  
  <p>I am also part of <code>dialout</code> group:</p>
  
  <pre><code>david@david-VirtualBox:~/myprojects/esp8266-injection-example$ lsusb
  Bus 001 Device 003: ID 1a86:7523 QinHeng Electronics HL-340 USB-Serial adapter
  Bus 001 Device 002: ID 80ee:0021 VirtualBox USB Tablet
  Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
  david@david-VirtualBox:~/myprojects/esp8266-injection-example$ ls -al /dev/ttyUSB0
  crw-rw---- 1 root dialout 188, 0 אפר 24 20:20 /dev/ttyUSB0
  david@david-VirtualBox:~/myprojects/esp8266-injection-example$ groups
  david adm dialout cdrom sudo dip plugdev lpadmin sambashare
  </code></pre>
  
  <p>Please help!</p>
  
  <p>Here is my make file:</p>
  
  <pre><code>david@david-VirtualBox:~/myprojects/esp8266-injection-example$ cat Makefile
  # tnx to mamalala
  # Changelog
  # Changed the variables to include the header file directory
  # Added global var for the XTENSA tool root
  #
  # This make file still needs some work.
  #
  #
  # Output directors to store intermediate compiled files
  # relative to the project directory
  BUILD_BASE      = build
  FW_BASE         = firmware
  
  # Base directory for the compiler
  XTENSA_TOOLS_ROOT ?= ~/myprojects/esp-open-sdk/xtensa-lx106-elf/bin
  
  # base directory of the ESP8266 SDK package, absolute
  SDK_BASE        ?= $(CURDIR)/esp_iot_sdk_v1.3.0
  
  #Esptool.py path and port
  ESPTOOL         ?= ~/myprojects/esp-open-sdk/esptool/esptool.py
  ESPPORT         ?= /dev/ttyUSB0
  
  # name for the target project
  TARGET          = app
  
      # which modules (subdirectories) of the project to include in compiling
      MODULES         = driver user
  EXTRA_INCDIR    = include ~/myprojects/esp-open-sdk/xtensa-lx106-elf/include
  
  # libraries used in this project, mainly provided by the SDK
  LIBS            = c gcc hal pp phy net80211 lwip wpa main
  
  # compiler flags using during compilation of source files
  CFLAGS          = -Os -g -O2 -Wpointer-arith -Wundef -Werror -Wl,-EL -fno-inline-functions -nostdlib -mlongcalls -mtext-section-literals  -D__ets__ -DICACHE_FLASH
  
  # linker flags used to generate the main object file
  LDFLAGS         = -nostdlib -Wl,--no-check-sections -u call_user_start -Wl,-static
  
  # linker script used for the above linkier step
  LD_SCRIPT       = eagle.app.v6.ld
  
  # various paths from the SDK used in this project
  SDK_LIBDIR      = lib
  SDK_LDDIR       = ld
  SDK_INCDIR      = include include/json
  
  # we create two different files for uploading into the flash
  # these are the names and options to generate them
  FW_FILE_1       = 0x00000
  FW_FILE_1_ARGS  = -bo $@ -bs .text -bs .data -bs .rodata -bc -ec
  FW_FILE_2       = 0x40000
  FW_FILE_2_ARGS  = -es .irom0.text $@ -ec
  
  # select which tools to use as compiler, librarian and linker
  CC              := $(XTENSA_TOOLS_ROOT)/xtensa-lx106-elf-gcc
  AR              := $(XTENSA_TOOLS_ROOT)/xtensa-lx106-elf-ar
  LD              := $(XTENSA_TOOLS_ROOT)/xtensa-lx106-elf-gcc
  
  ####
  #### no user configurable options below here
  ####
  FW_TOOL         ?= ~/myprojects/esptool
  SRC_DIR         := $(MODULES)
  BUILD_DIR       := $(addprefix $(BUILD_BASE)/,$(MODULES))
  
  SDK_LIBDIR      := $(addprefix $(SDK_BASE)/,$(SDK_LIBDIR))
  SDK_INCDIR      := $(addprefix -I$(SDK_BASE)/,$(SDK_INCDIR))
  
  SRC             := $(foreach sdir,$(SRC_DIR),$(wildcard $(sdir)/*.c))
  OBJ             := $(patsubst %.c,$(BUILD_BASE)/%.o,$(SRC))
  LIBS            := $(addprefix -l,$(LIBS))
  APP_AR          := $(addprefix $(BUILD_BASE)/,$(TARGET)_app.a)
  TARGET_OUT      := $(addprefix $(BUILD_BASE)/,$(TARGET).out)
  
  LD_SCRIPT       := $(addprefix -T$(SDK_BASE)/$(SDK_LDDIR)/,$(LD_SCRIPT))
  
  INCDIR  := $(addprefix -I,$(SRC_DIR))
  EXTRA_INCDIR    := $(addprefix -I,$(EXTRA_INCDIR))
  MODULE_INCDIR   := $(addsuffix /include,$(INCDIR))
  
  FW_FILE_1       := $(addprefix $(FW_BASE)/,$(FW_FILE_1).bin)
  FW_FILE_2       := $(addprefix $(FW_BASE)/,$(FW_FILE_2).bin)
  
  V ?= $(VERBOSE)
  ifeq ("$(V)","1")
  Q :=
  vecho := @true
  else
  Q := @
  vecho := @echo
  endif
  
  vpath %.c $(SRC_DIR)
  
  define compile-objects
  $1/%.o: %.c
          $(vecho) "CC $$&lt;"
          $(Q) $(CC) $(INCDIR) $(MODULE_INCDIR) $(EXTRA_INCDIR) $(SDK_INCDIR) $(CFLAGS)  -c $$&lt; -o $$@
  endef
  
  .PHONY: all checkdirs flash clean
  
  all: checkdirs $(TARGET_OUT) $(FW_FILE_1) $(FW_FILE_2)
  
  $(FW_FILE_1): $(TARGET_OUT)
          $(vecho) "FW $@"
          $(Q) $(FW_TOOL) -eo $(TARGET_OUT) $(FW_FILE_1_ARGS)
  
  $(FW_FILE_2): $(TARGET_OUT)
          $(vecho) "FW $@"
          $(Q) $(FW_TOOL) -eo $(TARGET_OUT) $(FW_FILE_2_ARGS)
  
  $(TARGET_OUT): $(APP_AR)
          $(vecho) "LD $@"
          $(Q) $(LD) -L$(SDK_LIBDIR) $(LD_SCRIPT) $(LDFLAGS) -Wl,--start-group $(LIBS) $(APP_AR) -Wl,--end-group -o $@
  
  $(APP_AR): $(OBJ)
          $(vecho) "AR $@"
          $(Q) $(AR) cru $@ $^
  
  checkdirs: $(BUILD_DIR) $(FW_BASE)
  
  $(BUILD_DIR):
          $(Q) mkdir -p $@
  
  firmware:
          $(Q) mkdir -p $@
  
  flash: firmware/0x00000.bin firmware/0x40000.bin
          -$(ESPTOOL) --port $(ESPPORT) write_flash 0x00000 firmware/0x00000.bin 0x40000 firmware/0x40000.bin
  
  clean:
          $(Q) rm -f $(APP_AR)
          $(Q) rm -f $(TARGET_OUT)
          $(Q) rm -rf $(BUILD_DIR)
          $(Q) rm -rf $(BUILD_BASE)
  
          $(Q) rm -f $(FW_FILE_1)
          $(Q) rm -f $(FW_FILE_2)
          $(Q) rm -rf $(FW_BASE)
  </code></pre>