All Questions
10
questions
0
votes
1
answer
138
views
max3232 disconnection suddenly - problem
Hi I use a Max3232 chip to connect the RS232 between the microcontroller(STM32F103) and an HMI, the problem is that sometimes this connection will be disconnected and no longer work, this may happen ...
0
votes
2
answers
359
views
STM32 UART without HAL library
I am writing register level code for STM32F4 & in my code there is a timer for calculation of the frequency of an input signal.
I am trying to implement a UART for sending calculated data to ...
- 27
0
votes
1
answer
231
views
Why does the data observed on a UART/RS232 bus look different between a logic analyzer and an STM32 Debugger?
I'm trying to communicate with a BNO055 using an STM32L552ZET6Q microcontroller via UART. The BNO055 is on a separate board, and connected to the STM32 via a 1.5M cable. Additionally, there are ...
- 349
4
votes
2
answers
675
views
MAX232 IC does not convert to and form RS232 levels
I made a simple circuit to read data from RS232 lines and print data on different RS232 lines. This is the IC I am using: MAX3232EIDWG4. The IC fails to convert the CMOS to RS232 level logic.
I am ...
- 153
1
vote
2
answers
862
views
Interfacing stm32 with MAX232
I am interfacing MAX232 with STM32F030k6. I have very recently found out that Max3232 would be a better choice, because it works with 3,3 volt. But I am eager to know if UART reciever pin of the ...
- 85
0
votes
2
answers
1k
views
RS485 vs RS232 similarity vs differences
I have used UART RS232 communication between MCUs extensively. Now I need to interface my STM32F407 MCU over RS485 bus with with devices. I have understood few things about RS485 but not-clear about ...
- 907
9
votes
2
answers
4k
views
Why can't I successfully send messages over RS232?
So the past week I have been working on getting UART messages sent from a STM32F407 and reading it on my laptop through a ugreen RS232 to USB cable using termite.
I have used STMCube to generate code ...
- 135
0
votes
1
answer
1k
views
How to connect STM32 with DAC?
I have to do a project for my Uni, where one of the requirements is to connect DAC (AD5721 - Datasheet) with STM32F405RGT6 (Datasheet - package : LQFP64).
This is what I have so far (DAC connected ...
2
votes
3
answers
2k
views
USB-232 converters - rts/cts latency problem
I am integrating the USB controller FT230X into a new product.
It interfaces directly with the 32 bit Cortex M4 MCU, the STM32F303x
The receive buffer on the STM32 is only 2 bytes deep, which I ...
- 14k
1
vote
2
answers
15k
views
STM32 RS485 connection
I want to interface stm32f0 with rs422 (half duplex and full duplex). What I'm not getting how to connect RE and DE signals to rs 232. From UART I'll be having RX, TX, VCC and GND pins which i need to ...
- 11