Posté le 15/06/2020 10:43
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Citer : Posté le 15/06/2020 10:54 | #
Try "Memory optimization" ([MENU], [F] then [F5]) first. If the problem is not resolved, use Wireshark to check your USB port and try to find GET DESCRIPTOR response DEVICE to see if the calculator indicates signs of life when it's connected over USB. Normally, you must have information like this:
DEVICE DESCRIPTOR
bLength: 18
bDescriptorType: 0x01 (DEVICE)
bcdUSB: 0x0101
bDeviceClass: Device (0x00)
bDeviceSubClass: 0
bDeviceProtocol: 0 (Use class code info from Interface Descriptors)
bMaxPacketSize0: 64
idVendor: Casio Computer Co., Ltd (0x07cf)
idProduct: fx-CP400 (0x6102)
bcdDevice: 0x0100
iManufacturer: 1
iProduct: 2
iSerialNumber: 0
bNumConfigurations: 1
Good luck !
Citer : Posté le 15/06/2020 11:17 | #
@Yatis
Where is "GET DESCRIPTOR response DEVICE" usually? I can't find it.
Citer : Posté le 15/06/2020 14:13 | #
On wireshark, select usb port (on some Linux distributions, you should run the "modprobe usbmon" command to load the "usbmon" kernel module) then connect your calculator (via the link menu). Stop port recording and try to find "GET DESCRIPTOR response DEVICE". Normally, you must have something like this:
Citer : Posté le 16/06/2020 10:21 | #
@Yatis
Thank you for your help, but this morning I successfully connected to the school laptop using the same cable and loaded C.Basic and Ftune3. Wonder if the USB-C to USB-A adapter is the crux of the issue? (My laptop has only one USB-C port and I need to use that adapter, but in school, I directly connect my calc to the school laptop without adapter)
Ajouté le 16/07/2020 à 08:52 :
Ok, literally one month later somehow I can now connect my calc to the home laptop using adapter. Kind of strange.