Search found 1502 matches

by stevestrong
Thu Sep 21, 2017 11:08 am
Forum: New users MUST post here first, and let us know a bit about you and your projects
Topic: Hi every one KHODIDAS from INDIA
Replies: 3
Views: 92

Re: Hi every one KHODIDAS from INDIA

The Arduino_STM32 core has no USB host functionality implemented.
You could try the generic core or the official STM32 core.
by stevestrong
Wed Sep 20, 2017 2:04 pm
Forum: USB bootloader
Topic: MapleMini : Standalone Bootloading and USB/Serial Usage
Replies: 10
Views: 85

Re: MapleMini : Standalone Bootloading and USB/Serial Usage

I can follow you, that is why I suggested the link. Please use the DFU loader, involved by uploading to the bootloader:http://wiki.stm32duino.com/index.php?title=Uploading_a_sketch#Upload_via_STM32duino_bootloader Have a look to the maple loader BAT file: https://github.com/rogerclarkmelbourne/Ardui...
by stevestrong
Mon Sep 18, 2017 8:12 pm
Forum: Working / ported libraries
Topic: New SdFat library (with and without DMA)
Replies: 154
Views: 16264

Re: New SdFat library (with and without DMA)

Just fyi, I added support for F4 (SPI and SDIO) to SdFat library from Greiman: https://github.com/stevstrong/SdFat
PR is ongoing: https://github.com/greiman/SdFat/pull/69
by stevestrong
Mon Sep 18, 2017 6:36 pm
Forum: General discussion
Topic: Overactive interrupt triggering using internal pullups
Replies: 42
Views: 1201

Re: Overactive interrupt triggering using internal pullups

First, you should define all variables used in ISRs as "volatile". Second, it does not seem to be a bug for me, it is rather the MCU which runs couple of times faster than the AVR processors. Third, you should put a resistor (100 Ohm) in series with the capacitor to the button in order to reduce the...
by stevestrong
Mon Sep 18, 2017 12:08 pm
Forum: Libraries & Hardware
Topic: Adafruit_ILI9341_STM - improvements
Replies: 18
Views: 709

Re: Adafruit_ILI9341_STM - improvements

Manny, I see that you are using non-DMA transfers. Is there any reason why you don't use DMA transfers?

Anyway,I posted two PRs to Greiman's repo to solve this issue. https://github.com/greiman/SdFat/pulls
by stevestrong
Sat Sep 16, 2017 4:22 pm
Forum: Ideas & suggestions
Topic: Differential ADC (ADC1-ADC2)
Replies: 8
Views: 188

Re: Differential ADC (ADC1-ADC2)

With simultaneous ADC conversion (the ADC1 samples in the exactly same time as the ADC2 does) the common noise voltage cancels (because we do u1 - u2). ... theoretically. But it did not work for me, I tried that a half a year ago, still got sporadically some differential noise. Maybe due to unequal...
by stevestrong
Fri Sep 15, 2017 12:00 pm
Forum: New users MUST post here first, and let us know a bit about you and your projects
Topic: Hello and Help with USB
Replies: 1
Views: 79

Re: Hello and Help with USB

You definitely need a driver.
Read this: http://wiki.stm32duino.com/index.php?ti ... on_Windows
If it does not work, try that from ST.
by stevestrong
Thu Sep 14, 2017 11:22 am
Forum: General discussion
Topic: Proposal. Remove support for GD32 from the Libmaple repo
Replies: 10
Views: 255

Re: Proposal. Remove support for GD32 from the Libmaple repo

Search the forum for STM32F103 overclocking, 128MHz is doable, however you need to set 3 wait states for the flash to work.