Search found 58 matches

by palmerr
Tue May 23, 2017 1:03 am
Forum: STM32F4 Boards
Topic: tiny stm32 F4 boards
Replies: 76
Views: 2627

Re: tiny stm32 F4 boards

A 3d printed frame would be the obvious answer! Just a simple box with a lip inside for the edge of the board to sit on - for a top mount solution. http://drive.google.com/uc?export=view&id=0B5-X58smuOjcT3RYOEtPYzRmak0 For a slide-in solution, a slot below the top edge could work. http://drive.googl...
by palmerr
Mon May 22, 2017 1:19 am
Forum: STM32F4 Boards
Topic: tiny stm32 F4 boards
Replies: 76
Views: 2627

Re: tiny stm32 F4 boards

Mine arrived in the post on Friday. Has anyone looked inside the EEPROM to see if it's just a resource, or has any magic pre-installed? Also, I tend to substitute long pin headers on my boards, rather using than the shorter ones supplied, so that I can attach logic analyser probes or put several wir...
by palmerr
Tue May 16, 2017 7:20 am
Forum: STM Core
Topic: First release of STM32F4 core (deprecated)
Replies: 60
Views: 2416

Re: First release of STM32F4 core

Frederic,

Excellent.

Richard
by palmerr
Tue May 16, 2017 1:10 am
Forum: STM32F4 Boards
Topic: tiny stm32 F4 boards
Replies: 76
Views: 2627

Re: tiny stm32 F4 boards

I see your point - and thanks for the advice. We'll just have to work on something general enough to be useful, but allow easy customisation. The NVIC isn't so much of an issue, as the interrupts are pretty specific for a particular task, even though there are quite a few of them. DMA is relatively ...
by palmerr
Mon May 15, 2017 3:09 am
Forum: STM32F4 Boards
Topic: tiny stm32 F4 boards
Replies: 76
Views: 2627

Re: tiny stm32 F4 boards

Ollie, EXTI on ADC or EXTI generally? @DanielEff and I have been talking about some neater ADCinit() code for his STM32GENERIC implementation under https://github.com/danieleff/STM32GENERIC/issues/6 To use the existing HAL (and LL) code requires a lot of intimate knowledge of the ADC and DMA registe...
by palmerr
Mon May 15, 2017 1:43 am
Forum: STM32F4 Boards
Topic: tiny stm32 F4 boards
Replies: 76
Views: 2627

Re: tiny stm32 F4 boards

Here's another way to get a tiny F7 (yes, F7) board: Sparkfun's new OpenMV M7 Camera - which just happens to come with an embedded STM32F765VGT6 to handle image processing. https://www.sparkfun.com/products/14186 It comes with an SD card socket, USB (FS), I2C, SPI and 6 other GPIOs broken out onto i...
by palmerr
Fri May 12, 2017 7:19 am
Forum: STM32F4 Boards
Topic: tiny stm32 F4 boards
Replies: 76
Views: 2627

Re: tiny stm32 F4 boards

Ollie, Yes, simple and standard is the way to go - leaving HAL (and LL) libraries visible for anything but the most basic tasks. For example, there's a standard ADC library in Arduino that can read an ADC sample and write to the DAC (PWM!!!) - all expenses paid. For anything else, direct access to t...
by palmerr
Fri May 12, 2017 1:45 am
Forum: STM32F4 Boards
Topic: tiny stm32 F4 boards
Replies: 76
Views: 2627

Re: tiny stm32 F4 boards

Ollie, I'd be interested in the schematic, as I have one on the way as well. Given the lack of onboard extras (memory, special purpose headers) and the handy silkscreen printing on the back, it shouldn't be too hard to trace the few lines going to the USB - almost certainly +5, GND, PA11, PA12 (USB ...
by palmerr
Thu May 11, 2017 1:36 am
Forum: STM Core
Topic: First release of STM32F4 core (deprecated)
Replies: 60
Views: 2416

Re: First release of STM32F4 core

Frederic, I'll get on with additional modes. Probably VBAT, VTEMP, Channels and Triple interleaved first. It would be useful to include both HAL and LL drivers for anything time sensitive in the new generic code. I found that I ran up against the time constraints in the HAL mode interrupt routine. F...
by palmerr
Tue May 09, 2017 7:06 am
Forum: STM Core
Topic: First release of STM32F4 core (deprecated)
Replies: 60
Views: 2416

Re: First release of STM32F4 core

I have added a reasonably extensive set of working HAL ADC examples for the new F4 code set at https://github.com/palmerr23/Black-F407VET6-cube/tree/master/examples * Regular Conversion Polling - ADC1 and ADC3 * Regular Conversion Interrupt * Regular Conversion DMA * Dual Mode Interleaved - Continuo...