Start simple, it will take time. Break down what you need, what you need to learn and how you will learn it. The rest is really easily found on google.
need help related to using - use MAX485 TTL to RS485 Converter Module with esp32 to get convert value of rs485 output to serial and print it on serial port
#define DE_PIN 2 // GPIO pin connected to DE (Data Enable) and RE (Receiver Enable) pins of MAX485 #define RS485_SERIAL Serial2 // Define the Serial port used for RS485 communication
void setup() { Serial.begin(9600); // Initialize serial monitor RS485_SERIAL.begin(9600); // Initialize RS485 serial communication pinMode(DE_PIN, OUTPUT); // Set DE pin as output }
void loop() { digitalWrite(DE_PIN, HIGH); // Enable transmission mode if (RS485_SERIAL.available()) { // If data is available on RS485 port while (RS485_SERIAL.available()) { // Read all available data char c = RS485_SERIAL.read(); // Read character Serial.print(c); // Print character to serial monitor } } digitalWrite(DE_PIN, LOW); // Disable transmission mode delay(100); // Delay before checking for new data }
Hi @accur4te If you don't mind could you tell us the exact instrument that you're trying to interface with ESP32 over RS485? Because you may need a salve ID/commands to communicate with the master microcontroller.
I guess you'll find the details about addressing scheme or the format of the data packets, including how to address specific devices (slaves) on the bus. So that you can write code for esp32 to read flow meter data.
Hey @Event Pings, Good news/bad news. Good news is we have another Engineering Hour coming up this Friday on getting started with Direct Memory Access (DMA) from @Edison @Edison_ngunjiri: https://discord.gg/7sJVtCyhSc?event=1250671812329607218. He'll be taking us from basic concept to real-world applications and of course a demo of memory to memory data transfers, here on Sunday, June 16th at 15:00 GMT. This is the first in a series towards timing, interrupts, and then OS-based design.
Now for the bad news, and sorry for the short noticeβI've got a last-minute conflict so I won't be able to host Office Hours tomorrow morning, which breaks an almost 8-month streak! But don't get too down, as next Friday, June 21st, we'll be back in Office Hours at the usual time of 15:00 GMT to continue our exploration of Zephyr with @ZacckOsiemo. Again, you can access that through the server event listings.
Of course, as always, keep the collab going in the server!
Oh, okay, I see it now. I was confused because the message was sent today, and Brandon says he can't host the meeting "tomorrow" - so that would point at Saturday. I guess it's due to time zones.
GM, fam. I'm JUST getting familiar with everything... Hoping to have my hardware back in the next week or so. Im grateful for the opportunity to learn from the best
Hey @Event Pings, we're going to start this week's Engineering Hour session in a little less than an hour at 15:00 GMT. @Edison will be explaining Direct Memory Access (DMA) on an STM32 and showing how you can leverage it to optimize your designs.
Yeah!.. I have to choose a project which I am going to work on but I am confused, what should I choose , I have thought of an audio amplifier only with transistors no ic, a helium balloon control with esp, or a hand motion capture gloves. Idk what should I choose, do you have any other suggestions, i am a beginner btw