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Type: Posts; User: mborgerson

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    Uploading Teensy files to PC

    As part of an in-progress data logging program, I've been working on optimizing the uploading of files from the Teensy SD card to a host program that I've written for the PC. After several days...
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    I have written a sample sketch that shows how to...

    I have written a sample sketch that shows how to transfer more than 32KB in a single DMA transfer. To do this you have to bypass the functions of the dmaChannel object, which does not allow...
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    I'm trying to keep my code as simple as...

    I'm trying to keep my code as simple as possible---and that means doing the DMA with one transaction. The eventual goal is to continuously output data from a video frame buffer as is done in the DMA...
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    Using PDB to time DMA transfers

    In a different thread I asked about sending a DMA transfer > 32K bytes---which doesn't seem to be supported by the DMAChannel object.
    I postponed investigation of large transfers and switched to...
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    DMA > 32K Bytes

    I am working on a project to generate gray-scale NTSC video using a 3-bit R2R ladder DAC on GPIOD bits 0 to 2. My plan is to use a large buffer of uint8_t to hold all the sync, porch, black and...
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    Basically, all I did is change the serial1...

    Basically, all I did is change the serial1 receive buffer length in the file. Win10 makes it a bit difficult by putting the core source in the Program Files(x86) directory, which does not normally...
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    I tried expanding the serial input buffer by...

    I tried expanding the serial input buffer by editing serial1.c, which resides in C://Program Files(x86)/hardware/teensy/avr/cores/teensy3/serial1.c.. I changed the SERIAL1_RX_BUFFER_SIZE ...
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    As noted above, there won't be large bursts, but...

    As noted above, there won't be large bursts, but rather continuous bursts of 36 bytes every 10 milliseconds. I will look into SerialEvents and other mechanisms to synchronize the reception of the...
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    Changing hardware serial buffer size

    I suspect that this topic has been discussed before, but a forum search didn't get me a good answer.

    I have a project that would be greatly simplified if I could expand the hardware serial receive...
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