Exception: Failed to connect to ESP32: Timed out waiting for packet header
Trying to upgrade the firmware I get the error in the topic.
The lopy is placed in the expansion board, led at the same end as usb.
G23 and GND are connected.
I have read/write access to the usb-serial device it presents itself as.
@chrisq, good to know you pulled a Macgyver and it worked :) . I'm proceeding to to close this thread now as it was solved.
@abilio Mystery solved!
A paperclip worked as well, and I now found the original jumper lodged in a corner of the bubble bag.
Thanks for all the help, I think I'm good to go now :)
abilio last edited by abilio
Yes @chrisq, we've just found that was the cause for another user (see here). Can you place a jumper on TX and retry. If you don't have spare jumpers, you can take out the one that says BAT and use it to test.
@Xykon Thank you for the reply!
Below is the result.
I did just notice, however, that my expansion board did not come with a jumper on the "TX" pins, while in the picture docs.pycom.io it seems to be there. Could that be the issue?
python2 bin/updater.py -f firmware/lopy_0.9.1.b1_868.bin -p /dev/ttyUSB0 Namespace(file='firmware/lopy_0.9.1.b1_868.bin', port='/dev/ttyUSB0') Connecting... Exception: Failed to connect to ESP32: Timed out waiting for packet header, on line 75
Can you check with a terminal program that you get this output when you reset the board while the G23/GND wire is connected?
rst:0x1 (POWERON_RESET),boot:0x3 (DOWNLOAD_BOOT(UART0/UART1/SDIO_REI_REO_V2)) waiting for download
Can you post the full output from the updater when you run it manually?
bin/updater.py -f firmware/lopy_0.9.1.b1_868.bin -p /dev/ttyUSB0
Make sure to use the correct file for your region (868/915).
@abilio The lopy shows up when scanning for wifi ap's (unless there's someone else in the office who also got one :) ).
In case it's useful:
[ 8032.623635] usb 2-2: new full-speed USB device number 20 using xhci_hcd [ 8032.807496] ftdi_sio 2-2:1.0: FTDI USB Serial Device converter detected [ 8032.807536] usb 2-2: Detected FT-X [ 8032.807724] usb 2-2: FTDI USB Serial Device converter now attached to ttyUSB0
chrisq@berber ~ lsusb Bus 002 Device 020: ID 0403:6015 Future Technology Devices International, Ltd Bridge(I2C/SPI/UART/FIFO) chrisq@berber ~ groups adm disk uucp log rfkill video audio floppy input power users docker chrisq chrisq@berber ~ ls -la /dev/ttyUSB0 crw-rw---- 1 root uucp 188, 0 Oct 31 15:29 /dev/ttyUSB0
lsusb -vvv bcdUSB 2.00 bDeviceClass 0 bDeviceSubClass 0 bDeviceProtocol 0 bMaxPacketSize0 8 idVendor 0x0403 Future Technology Devices International, Ltd idProduct 0x6015 Bridge(I2C/SPI/UART/FIFO) bcdDevice 10.00 iManufacturer 1 iProduct 2 iSerial 3 bNumConfigurations 1 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 32 bNumInterfaces 1 bConfigurationValue 1 iConfiguration 0 bmAttributes 0x80 (Bus Powered) MaxPower 90mA Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 2 bInterfaceClass 255 Vendor Specific Class bInterfaceSubClass 255 Vendor Specific Subclass bInterfaceProtocol 255 Vendor Specific Protocol iInterface 2 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0040 1x 64 bytes bInterval 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x02 EP 2 OUT bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0040 1x 64 bytes bInterval 0
@chrisq Do you have the jumpers in the expansion board?
@abilio Thank you for the quick reply.
Yes, the led is blinking blue about every 4 seconds without the wire.
Hi @chrisq, can you confirm the LED blinking if you turn the board on without the wire?