Search found 149 matches
- Thu Aug 08, 2024 8:04 pm
- Forum: PR's bugs and enhancements
- Topic: STM32G431CBU6 (and others) : USARTs : how to declare only Rx pin
- Replies: 14
- Views: 3350
Re: STM32G431CBU6 (and others) : USARTs : how to declare only Rx pin
some of the features of the USARTs (from the reference manual of your G431, a very interesting document ! ) : • Separate enable bits for transmitter and receiver ... I don't know anything specific about G431, but there are many hardware features that STM32DUINO does not support, even for F103 p ...
- Sun Jul 14, 2024 8:17 pm
- Forum: General discussion
- Topic: Discharging the battery for the FSE clock
- Replies: 20
- Views: 3213
Re: Discharging the battery for the FSE clock
I've seen that there are STM32F411-based boards https://fr.aliexpress.com/item/1005006127461676.html?spm=a2g0o.productlist.main.1.29b3UriPUriPFg&algo_pvid=6335e4ed-da8e-47b4-9bd1-d188e2c38ab2&algo_exp_id=6335e4ed-da8e-47b4-9bd1-d188e2c38ab2-0&pdp_npi=4%40dis%21EUR%215.88%210.99%21%21%2145.34%217.58 ...
- Sat Jul 13, 2024 6:40 pm
- Forum: General discussion
- Topic: Discharging the battery for the FSE clock
- Replies: 20
- Views: 3213
Re: Discharging the battery for the FSE clock
If you have a spare ADC capable GPIO, maybe you could connect VBAT to that and then periodically enable the pull-down (to give it some load) and then read the voltage.
This is not something I have done though.
This is not something I have done though.
- Mon Apr 29, 2024 3:31 am
- Forum: General discussion
- Topic: STM32 Pinout Polarity
- Replies: 5
- Views: 20125
Re: STM32 Pinout Polarity
For some other processors GPIO pins may not have symmetrical output capability. For example, they might be able to sink more current than they can source, and that could influence the way you might connect a LED to them. However for the STM32 processors that I have used, the datasheets indicate ...
- Sun Apr 28, 2024 4:00 am
- Forum: Libraries & Hardware
- Topic: Adafruit Nexopixel Library not working...
- Replies: 8
- Views: 19849
Re: Adafruit Nexopixel Library not working...
All white is an indication that the pulse durations are too long, resulting in every bit being interpreted as “1”. I looked at the Adafruit library some years ago, and the timing was a bit out, but the pulses were actually on the short side, which could cause the opposite problem of all LEDs off. In ...
- Sun Mar 31, 2024 6:25 am
- Forum: General discussion
- Topic: Hardware Serial returning gibberish.
- Replies: 3
- Views: 7951
Re: Hardware Serial returning gibberish.
Try
Code: Select all
Serial.write(gpsSerial.read());
- Thu Feb 29, 2024 1:48 am
- Forum: General discussion
- Topic: STM32 hangs when >100khz signal applied to input
- Replies: 19
- Views: 6344
Re: STM32 hangs when >100khz signal applied to input
Dannyf, I missed your updates on the second page previously. It is a very different situation if you can avoid the STM32DUINO and maybe HAL code as well, but this could be easier said than done depending on what other parts of STM32DUINO need to be used in the final project. Maybe your "cut down ...
- Wed Feb 28, 2024 9:07 pm
- Forum: General discussion
- Topic: STM32 hangs when >100khz signal applied to input
- Replies: 19
- Views: 6344
Re: STM32 hangs when >100khz signal applied to input
for around 5µs that's too long. your ISR overhead will be 20 ticks. Hard to imagine this thing goes over 100 ticks end-to-end. I will do some testing later on as well. I would be interested to see what you find. I've done tests like that before, and the result is not out of line with what I have ...
- Wed Feb 28, 2024 5:22 am
- Forum: General discussion
- Topic: STM32 hangs when >100khz signal applied to input
- Replies: 19
- Views: 6344
Re: STM32 hangs when >100khz signal applied to input
I would approach the problem this way. 1. Set up an input capture on falling edge. No interrupt. 2. Set up one input capture on rising edge, interrupt enabled. In this isr, you will need to calculate the timer count elapsed between two isr invocations, and the difference between the count captures ...
- Mon Feb 26, 2024 8:54 pm
- Forum: General discussion
- Topic: STM32 hangs when >100khz signal applied to input
- Replies: 19
- Views: 6344
Re: STM32 hangs when >100khz signal applied to input
I lifted up the first code you posted (that uses input capture) and tried it on 72MHz F103. I could not get it to work anywhere near 100kHz. At 20kHz it was producing output, but looking like this: Frequency = 0.0000 Dutycycle = 0.0000 I then changed it to produce the pwm output on pin PA1 instead ...