Search found 197 matches

by Ollie
Tue Dec 05, 2017 5:12 am
Forum: General discussion
Topic: Summer camp ideas?
Replies: 11
Views: 185

Re: Summer camp ideas?

For low cost, you could have an ultrasound sensor mounted on a servo and do a sonar mapping. The numeric results could be moved into Excel, Python, or Processing for rendering. If there would be more time, there could be a real-time sonar display. For fun, there could be a competition to recognize s...
by Ollie
Tue Nov 28, 2017 5:31 pm
Forum: Postbag
Topic: Robot Dyn Black Pills
Replies: 5
Views: 485

Re: Robot Dyn Black Pills

I did like the fact that the boot pins are missing. I didn't even use a resistor, but a direct soldering of the boot0. It has been working without any problems for many weeks.
by Ollie
Sun Nov 26, 2017 5:40 pm
Forum: Code snipplets
Topic: Fast bitbanding gpio/sram access
Replies: 22
Views: 405

Re: Fast bitbanding gpio/sram access

My reasons to like bitbanding I/O were Monotonic operations did eliminate conflicts with interrupts Self-documentation when using variable names instead of port letters and pin numbers Accessing pins that were not known at compilation time The reason why I have abandoned bitbanding is It is not supp...
by Ollie
Wed Nov 22, 2017 6:17 pm
Forum: General discussion
Topic: ST-Link Vs Jlink
Replies: 15
Views: 321

Re: ST-Link Vs Jlink

I do agree with racemaniac that the simple ST-Link does everything you need. In addition to the cost, you should select the least problematic platform. I don't know which one is the most robust. Over the past, I have had a lot of driver issues with ST-Link and the latest V2.1 is not working for my b...
by Ollie
Wed Nov 15, 2017 5:36 pm
Forum: CubeMX and HAL
Topic: GPIO macros for CubeMX
Replies: 4
Views: 485

Re: GPIO macros for CubeMX

You are correct that many of these read-modify-write problems can be dormant for a very long time and in sometimes dormant forever. What is bothering me, that it has taken some time for STM has some difficulties to get the register names right. F1 has 16 bit registers BSRR and BRR. F4 has only a 32 ...
by Ollie
Sat Nov 04, 2017 3:16 am
Forum: Custom design boards
Topic: Alternative BluePill sized F4
Replies: 16
Views: 505

Re: Alternative BluePill sized F4

There was a reference to 100 pin STMH743 as the next step after F4. Here are some reference points of prices: 1. STM32H743ZI Nucleo board - I got mine today and paid $23 at Mouser - After the purchase, I have seen the prices as low as $19 2. STM32H743ZI chip (144 pin) - Directly from ST for $8.90 (i...
by Ollie
Thu Nov 02, 2017 4:44 pm
Forum: STM32F103 Boards
Topic: The "PinkPill" board - the Reference Design
Replies: 7
Views: 470

Re: The "PinkPill" board - the Reference Design

I don't prefer to add any more confusion for the F103 family. The "new" Robodyn Black Pill seems to be the winner. The community effort should be for F405 Pill.
by Ollie
Sat Oct 21, 2017 4:45 pm
Forum: CubeMX and HAL
Topic: GPIO macros for CubeMX
Replies: 4
Views: 485

GPIO macros for CubeMX

My IDE tool has been EmBitz and that has restricted the development to Standard Peripheral Library. I have tried several non-STMicroelectronics libraries, but with disappointments. In practice, I have now ended in STM32CubeMX with tight integration with EmBitz. The HAL and LL API calls for GPIO felt...
by Ollie
Fri Oct 20, 2017 3:37 pm
Forum: New users MUST post here first, and let us know a bit about you and your projects
Topic: Hello from Finland
Replies: 1
Views: 82

Re: Hello from Finland

Hi Jussi,

I am happy to see more Finns in Robotics and STM32 activities. Congratulations to team Finland of getting the highest match points in FIRST Global Challenge 2017.

Cheers, Ollie (Olavi)
by Ollie
Wed Oct 18, 2017 7:14 pm
Forum: General discussion
Topic: Funny Package
Replies: 11
Views: 323

Re: Funny Package

Sorry, I cannot explain why I said that the STM32 MINI (Black Pill) power LED is red. It is GREEN. :oops: