@WMXZ
Just downloaded and installed the MTP and USB2 directories. I changed the made sure I changed to use SDIO = 1. SDFAT-beta was already set up but no luck. I see teensy as a device but no SDCard? I am using a 32Gb sd card with a win10x64 pc on a T4.1
what would be required to provide MTP and a file system on T4.1 (optional) external flash? and someday maybe "reserved" area of internal flash (bootloader mods required?)
do you happen to have a separate SdFat V1 installation in addition to SdFat-beta?
@mjs513, I will get my T4.1 (not beta) in an hour or so, I will test this evening (EU time). maybe there are some missing 4.1 symbols
Quick question are the links the same to libraries?
This is the latest: https://github.com/WMXZ-EU/MTP_t4?
Can you copy and paste to and from the SDCard?
Yes, that is the link,
I copied to and from SDCard (but used T4.0 + AudioCard)
There may be issues with symbols on Arduino. As I develop with makefile (VisualCode) there may be some oversights
EDIT: After installing TD1.52 and updating the usb_desc.h (USB_MTP_SERIAL) program does NOT work anymore
will investigate
After setting speed from 600 MHz to 396 MHz, it worked also compiled with Arduino settings
Indicating there are some residual issues with T4.1 too fast for the way USB_MTP is implemented
Lot of things to do
Confirm that for "MTP_DISK_SERIAL"Works up to 450Mhz. At 528 and 600Mhz I tend to loose USB connection.
Confirm that for "MTP_DISK_SERIAL"
All my attempts to clean-up code, delays etc. failed to get it working with higher speeds.
Probably it needs a USB analyser, which I do not have. That is something for Paul.
Anyhow, as my application is low power, which means lowest CPU speed, I stick with an upper speed of 450 Mhz.
copying is a rapid sequence of USB transfers. If they are not terminate correctly, everything gets wrong.Any ideas why copying is intermittently working?