WMXZ
Senior Member

Kurt, Do I understand it correctly, you wanted to detect at compile time if the user inserts/removes a uSD card?

my reply was triggered by (emphasis my me) but may KurtE was intending something different

is the "__has_include("file.h") not testing if "file.h" CAN be included and not if it is included by the sketch? gcc.gnu.org/onlinedocs/cpp/_005f_005fhas_005finclude.html : "The special operator __has_include...

yes it should fit Rev D Audio card has only the pins adapted to T4.x, while Rev C Audio card has pins adapted to T3.x

can you check if the buffers are 32-bit aligned?

If I understand correctly, this is your sequence of operation: you start MTP you start Logger You stop Logger You do not see files added by Logger. This is how MTP works. The PC has under normal circumstances...

check https://www.pjrc.com/store/teensy41.html close to bottom R2 470 Ohm

thanks changed read.me on https://github.com/WMXZ-EU/MTP_t4

The reason for this implementation is that in MTP the PC is the master and it can do what it wants. For example, PC does not need to refresh directories, and Windows behaves differently than Linux. Teensy responds...

Logarithmic frequency scales are very common in bio-acoustics as they reflect the hearing capabilities of animals. However FFT is common in signal processing as it is fast but results in a linear frequency scale....

You have also to consider the AudioInputI2S that configures the SGTL5000

The I2S microphone has LSB bot 0 while the I2SInput (from audio library) uses as LSB bit 16 (uses top 16 bit) you can hear only very loud signals test: hit on microphone, you should hear something. Unfortunately...

AFAICS, usb_mtp_status is only introduced in latest beta. At least, on my production system TD 1.56 it is not there

Not sure if the RAWHID_* and DEVICE_ * are needed and what they are doing they com from USB_EVERYTHING they are used in part for USB_SERIAL_HID (DEVICE_*) USB_RAW_HID (RAWHID_*) but USB_MIDI4,16...

One issue with MTP+Serial is that it uses for the moment the PID of Everything Even if MTP+Serual is not yet ready to be included for full, I continue to suggest that Paul defines a dedicated PID, so we can run the...

About 3 years ago, I made a FAT free FS called ZeroFS https://github.com/WMXZ-EU/zeroFS Not that I suggest you to use this, but it may be easier to digest what I did than analysing FatFs In general you only have to...

search forum for MTP

From T4.1 card, I see SCK,MOSI,MISO SCK1,MOSI1,MISO1 SCK2,MOSI2,MISO2 You should be able to use any set for talking to uSD cards HOWEVER, you must then adapt the SD card interface accordingly. There may be also...

For SPI, you always should check that CLK,MOSI,MISO and chip select of your board correspond to your program. The Teensy card may help to figure out the standard values.

Thanks Bill, I tried with new disk and it worked also here. sane configuration (SdFat 2.1.2, Teensyduino 1.56 with Arduino 1.8.19) must have screwed up my earlier testing.

Just downloaded actual version and without further editing of SdConfig.h and activating build-in debug messages, I get test exFAT logger sd.begin() done file FILE_A.txt, pos=8192, adding 8192 bytes, written 8192...