Hello, Im sorry, I recognize this post will be moved. Please accept my apologies for making more work for you.
I posted here because I am embarking of a data collection device from sensors. And thought my post fit here. But I do see that it might be putting the cart before the horse.
I am trying to start small project with a DHT22 and see the data in the serial viewer. But my code is not doing it.
Or Im setting up my environment wrong.
I have this hardware
List item
Esp32S 38p dev board - not connecting to the com
Esp wroom 32 - id2ac7z-espwroom32 - connects fine but when hard wird to gnd-3v3-pin4 or g4 I get cant read dht22 sensor data in serial monitor
windows 11 IDE 2.3.2
my code is
//Ronald M. Pare
//xTrainer
//alpha 1.0 DHT intergation
#include <Adafruit_Sensor.h>
#include <DHT.h>
#include <DHT_U.h>
#define DHTPIN 4 // Digital pin connected to the DHT sensor
#define DHTTYPE DHT22 // DHT 22 (AM2302), AM2321
DHT dht(DHTPIN, DHTTYPE);
void setup() {
Serial.begin(115200);
dht.begin();
}
void loop() {
delay(2000);
float temperature = dht.readTemperature();
float humidity = dht.readHumidity();
if (isnan(temperature) || isnan(humidity)) {
Serial.println("Failed to read from DHT sensor!");
return;
}
Serial.print("Temperature: ");
Serial.print(temperature);
Serial.print(" °C ");
Serial.print("Humidity: ");
Serial.print(humidity);
Serial.println(" %");
}
Thank you for your time and patience while I properly learn the etiquette. Yes I read the getting started documents, but I am on the spectrum and while I see the rules I over complicate things in my head.
Ok I intend to use the development board (unplugged, should I plug it in to power? or is the usb good enough?). But it isnt being recognized.
While I haven't tried the uart cable (haven't used it yet its new) my micro usb wont show a com.
However when I connect directly to the esp itself unconnected to dev board with micro-usb i get my com3 and it uploads but doesn't show the sensor data. powered by usb
I connected the dht22 to gnd at bottum of board across from 3v3, the 3v3 and g4 or p4 as described on board.
Thank you, I hope to hear the kids say it this year.
Powered through USB should be OK.
If you don’t see a com port either the board is damaged or you miss a driver or the cable is just a power cable and not a data + power cable.
Ill check, I am pretty sure I have it. I will install it now and see.
At this point i am saying yes, as I have been to this page and installed a driver.
Yes I do.
Connected the uart to the dev board and get this error. tx connected to rx and visa versa
Sketch uses 269549 bytes (20%) of program storage space. Maximum is 1310720 bytes.
Global variables use 17024 bytes (5%) of dynamic memory, leaving 310656 bytes for local variables. Maximum is 327680 bytes.
esptool.py v4.6
Serial port COM6
Connecting......................................
Waiting for gdb server to start...[2024-06-16T19:02:26.178Z] SERVER CONSOLE DEBUG: onBackendConnect: gdb-server session connected. You can switch to "DEBUG CONSOLE" to see GDB interactions.
"C:\Users\decke\AppData\Local\Arduino15\packages\esp32\tools\openocd-esp32\v0.12.0-esp32-20230921/bin/openocd" -c "gdb_port 50000" -c "tcl_port 50001" -c "telnet_port 50002" -s "c:\Users\decke\Documents\Arduino\xtrainer-a1-0" -f "C:/Program Files/Arduino IDE/resources/app/plugins/cortex-debug/extension/support/openocd-helpers.tcl" -f board/esp32-wrover-kit-3.3v.cfg
Open On-Chip Debugger v0.12.0-esp32-20230921 (2023-09-21-13:40)
Licensed under GNU GPL v2
For bug reports, read OpenOCD: Bug Reporting
CDRTOSConfigure
Info : auto-selecting first available session transport "jtag". To override use 'transport select '.
Info : Listening on port 50001 for tcl connections
Info : Listening on port 50002 for telnet connections
Error: unable to open ftdi device with description '', serial '' at bus location '*'
C:/Users/decke/AppData/Local/Arduino15/packages/esp32/tools/openocd-esp32/v0.12.0-esp32-20230921/bin/../share/openocd/scripts/target/esp_common.cfg:9: Error:
at file "C:/Users/decke/AppData/Local/Arduino15/packages/esp32/tools/openocd-esp32/v0.12.0-esp32-20230921/bin/../share/openocd/scripts/target/esp_common.cfg", line 9
[2024-06-16T19:02:26.803Z] SERVER CONSOLE DEBUG: onBackendConnect: gdb-server session closed
GDB server session ended. This terminal will be reused, waiting for next session to start...
