Search found 536 matches

by ag123
Fri May 26, 2017 8:34 pm
Forum: STM32generic
Topic: [STM32GENERIC] SDIO DMA
Replies: 161
Views: 1588

Re: [STM32GENERIC] SDIO DMA

off-topic: in a way perhaps 1 day we could just get nand flash & hack our own SD cards (maybe with stm32 f1-f7 as its controller, no crc errors) :lol: http://bunniefoo.com/bunnie/sdcard-30c3-pub.pdf surprisingly u could actually get those nand flash & even some proprietary programmers on eba...
by ag123
Fri May 26, 2017 8:20 pm
Forum: OSX
Topic: Failed to reconnect serial monitor after uploading on macOS
Replies: 29
Views: 412

Re: Failed to reconnect serial monitor after uploading on macOS

i'm not too sure if /usr/bin/test or /bin/test exists on macos, but i'd guess [ ! -r ${dummy_port_fullpath} ] is basically test ! -r ${dummy_port_fullpath} ? using dd seem to be checking if you are able to copy from the file, which probably works but looks a little unorthodox :) and it would seem a ...
by ag123
Fri May 26, 2017 7:25 pm
Forum: Generic STM32F103
Topic: Blue pill and SD card
Replies: 15
Views: 202

Re: Blue pill and SD card

are you using 'greiman''s SD fat? currently this seem to be one that works pretty well http://www.stm32duino.com/viewtopic.php?f=13&t=20 https://github.com/greiman/SdFat in addition, i actually used the SPI.cpp, SPI.h 'drivers' in libraries/SPI https://github.com/rogerclarkmelbourne/Arduino_STM3...
by ag123
Fri May 26, 2017 7:08 pm
Forum: STM32F4 Boards
Topic: tiny stm32 F4 boards
Replies: 74
Views: 1696

Re: tiny stm32 F4 boards

f7 is probably closer to a raspberry pi / beagle bone black (i.e. mini PCs) than simply f4, f1 which is deem an 'mcu', i've been wondering how they have been able to pack that much stuff into an soc, as the photos goes, the f7 do have a 'massive' chip surface :lol: i've been looking at those f103vet...
by ag123
Fri May 26, 2017 6:56 pm
Forum: STM32generic
Topic: [STM32GENERIC] SDIO DMA
Replies: 161
Views: 1588

Re: [STM32GENERIC] SDIO DMA

well, it seem the crc error is alleviated? that's a pretty good achievement :D i took a look at pito's last post, it seem there isn't CRC errors in those copies the command timeouts seemed somewhat harder to solve and some of the logics may seem to be needed in the sketch/app itself. e.g. i'm not su...
by ag123
Fri May 26, 2017 6:32 pm
Forum: Generic STM32F103
Topic: Blue pill and SD card
Replies: 15
Views: 202

Re: Blue pill and SD card

as you have an LDO regulator on the SD breakout board https://ae01.alicdn.com/kf/HTB1aiMDJFXXXXanXVXXq6xXFXXXH/118548710/HTB1aiMDJFXXXXanXVXXq6xXFXXXH.jpg you may like to try to route a 5V pin from your bluepill to the VCC pin on the SD breakout board *warning*, when doing all these, have voltmeter ...
by ag123
Fri May 26, 2017 6:16 pm
Forum: STM32generic
Topic: [STM32GENERIC] SDIO DMA
Replies: 161
Views: 1588

Re: [STM32GENERIC] SDIO DMA

i think i must have mixed up sequences while i test, testing with a 32 megs file class 10 strongtium branded uSD card, the board tested with is black stm32f407vet6 using the on board uSD slot :P i waited for a while between runs but did not reproduce the error i got earlier. Use a freshly formatted ...
by ag123
Fri May 26, 2017 5:42 pm
Forum: Builds and Announcements
Topic: FYI. I'm applying loads of changes to the master branch
Replies: 2
Views: 56

Re: FYI. I'm applying loads of changes to the master branch

just pulled the repository replaced my hardware/Arduino_STM32
built and run a blinky sketch in arduino ide 1.8.2 with LED_BUILTIN, using baite maple mini, works ok, serial monitor works just well (linux64), no issues
i've not yet tested anything more 'complicated' yet
by ag123
Fri May 26, 2017 3:11 pm
Forum: STM32generic
Topic: [STM32GENERIC] SDIO DMA
Replies: 161
Views: 1588

Re: [STM32GENERIC] SDIO DMA

Can you run it a few times in a row to see if it fails any time? I have also discovered that if I let the sketch waiting for a few minutes, the card seems to go to idle, which would need another command to get it in transfer mode again. If you could test that, would be good to confirm it is normal ...
by ag123
Fri May 26, 2017 2:43 pm
Forum: STM32generic
Topic: [STM32GENERIC] SDIO DMA
Replies: 161
Views: 1588

Re: [STM32GENERIC] SDIO DMA

there may be some prior fat errors on the card. hence, we'd ignore it for now, going to re-run a new test 100 megs (102400000 bytes) test_in.bin strontium branded uSD card class 10 16GB ************************************************* Opening the read file.. Opening the write file.. Reading, Writin...

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