All Questions
Tagged with rs232 microcontroller
55
questions
1
vote
0
answers
50
views
RS232 isolated communication via MAX3250
I have a two diffrent boards. One of the board is send the SoC and other things to Charger Board. While charging progress starts I want to isolate this to device because battery ground is isolated to ...
- 27
0
votes
0
answers
109
views
Ethernet to UART (or RS232) conversion
For the PCB I'm designing, I need serial communication (1.8V UART, 3.3V UART, 5V UART or RS232, whichever is easiest) from an Ethernet connection (the devices connected to the Ethernet network will ...
- 7,697
0
votes
1
answer
540
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ESP32-S3: Serial stops working after a random period of time
I am using a ESP32-S3 Dev Kit (Arduino code) connected to a MAX3232 to read data from a solar inverter. I am facing a strange problem as follows:
The UART (Serial1, ...
- 101
0
votes
1
answer
598
views
Capturing serial output from PuTTY
I have a microcontroller set up to capture serial data via RS-232 so that I can debug directly and view registers, variables, etc. I am using PuTTY through a USB to RS-232 converter to send data to it ...
- 129
1
vote
1
answer
238
views
Convert RS232 signal to I2C/CAN/MAVLink signal
I have an airspeed sensor that outputs a RS232 signal: https://www.aeroprobe.com/micro-air-data-system/. I want to connect this sensor to the Pixhawk in order to use the data for my controller ...
- 111
7
votes
3
answers
2k
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Must RS-232 devices use the same logic level?
I want to interface a microcontroller with the RS-232 COM port of my PC.
My PC uses a 75232G IC, which uses +/-12V logic levels as per some multimeter tests.
Currently I'm planning to use the ...
- 490
2
votes
1
answer
183
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On a (Windows) PC, can the TxD pin on COM1 be bitbanged? If not, why not?
In this question:
Why usb to serial port converter can’t program avr microcontroller?
Cornelius claims:
"DTR and RTS are the only pins of the serial port that can be bitbanged."
But is that ...
- 63
0
votes
2
answers
583
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How do I know if it's RS232 levels or TTL levels
I have a random device: GT MEDIA V8 Finder Pro. I would like to communicate over its console port.
Here are some pictures of its mainboard. Here is the area around the console connector:
I have no ...
1
vote
0
answers
124
views
MCU to talk to 5 (or more) serials
I have a project where I need to talk to 5 devices over serial (RS232 to be precise).
At 57k Baud. With a polling frequency that is as high as possible.
The first step is probably to convert from ...
- 221
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
-5
votes
1
answer
83
views
Relay controller without the relays? [closed]
I need a way to turn off/on about 20 relays or FETs using RS-232 codes. (I do not want to program a generic microcontroller, I want a dedicated device that is designed to do switching only.) I notice ...
- 2,206
0
votes
2
answers
499
views
Understanding jtag between microcontroller and devices
I am trying to understand how a micro-controller (in this case a C2000 from TI) communicates with other devices via jtag. The device here is a FT2232 (a jtag to usb converter). According to the figure,...
0
votes
1
answer
690
views
RS232/TTL converter with Arduino not recognized as serial device
My goal is a very basic one: I want to communicate from my microcontroller to my PC/phone via RS232.
I bought a TTL/RS232 converter like this.
And since my PC does not have a RS232 port I am using a ...
- 3
1
vote
0
answers
88
views
UART communication with a Thorlabs chip
I am trying to configure a Thorlabs temperature driver (MTD415TE), using a UART-USB connection. For this, I am using a Foca v2.2 with a FT232R USB-UART cable. I am using serial terminals such as ...
- 11
0
votes
1
answer
62
views
ICL3232 and SN75C3232 difference
I'm using ICL3232EIV-16Z-T in one of my projects for UART communication. As per the datasheet, the max speed is 500Kbps. But I've tested this IC for baud rate up to 921600 and there is no data loss. ...
- 33