About Adar70

Adar70 · 2024-10-18

I'm using Nucleo32-F303K8. I'm running low on pins and can't upgrade to a bigger MCU. I was thinking of using NRST pin as an E-Stop. Would that be a good idea? The GPIO pins would be externally driven low or high while under and after the reset, espe...

Adar70 · 2024-10-17

In a datasheet for STM32F303K8, page 77::How does the Schmitt trigger hysteresis work here? When the input transitions from low to high, should the value of hysteresis be added to the minimum high level input voltage, or does it say that the pin will...

Adar70 · 2024-07-05

Hello. I have problems with communication with TMC2209 through UART. It doesn't respond at all. I think that I've fried a receiver in UART1. Is that even possible? My board is Nucleo-F303k8. Please help me. Here's the code:/* USER CODE BEGIN Header *...

Adar70 · 2024-05-31

Hello. I have few questions on UART half-duplex single-wire peripheral. I'm using stm32f303k8.In RM it states that TX and RX are internaly connected and TX is low (or whatever "released" can mean) when it's not transmitting. This means that when no t...

Adar70 · 2024-05-27

Hello. I'm trying to obtain CRC value from CRC peripheral. It's supposed to give me 8 bit number. Instead it gives me 32 bit number. What am I doing wrong? Below is the code and program outputs. /* USER CODE BEGIN Header */ /** ********************...

Adar70 · 2024-10-21

It's a college project with thin budget, but you're completely right. There's no way around it, and a false stop could be even worse that no stop

Adar70 · 2024-10-18

E-Stop means emergency stop, a big red normally closed button that when pressed has to stop a device from operating. I've already accounted for the internall pull-up on NRST and the need for external pull-down, the siulation showed that everything is...

Adar70 · 2024-10-17

But the difference between V_IH and V_IL is bigger than 200mVfor 3,3V V_DD. So where is that 200mV loop placed at? In the undefned area perhaps? And your diagram doesn't make sense. Low V_IN gives high output level? No.Maybe it's how this picture sho...

Adar70 · 2024-07-05

No, I manually flipped 0xA0 to 0x05. Now I have to send it in MSB first order. 0xA0 in LSB order is 0x05.But it doesn't make sense why in CubeMX setting "MSB first" to Enable doesn't work while Disable works. This is sending 0x05 in LSB order and it ...

Adar70 · 2024-07-05

Praise Jesus! I prayed to Lord and He helped me!But still, it's weird. It started to work after I switched the "MSB first" option in CubeMX to Disable. I swear that before it worked with "MSB first" in Enable.But it doesn't make sense now honestly. T...

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E-Stop by resetting

What does hysteresis mean

Problems with communication with TMC2209 through UART

More information on UART half-duplex single-wire peripheral and functions

CRC calculation gives 32 bit number instead of 8 bit

Re: E-Stop by resetting

Re: E-Stop by resetting

Re: What does hysteresis mean

Re: Problems with communication with TMC2209 through UART

Re: Problems with communication with TMC2209 through UART