I was trying to use the GPIO19 and GPIO20 in esp32-S3 but these pins always stay High, I tried disabling the TinyUSB driver in the esp-idf menuconfig but still, I was not able to use those pins as generic GPIOs. How can I do that?
I am using ESP-IDF with vsCode.
This is the code snippet:
#define CAM_PWR GPIO_NUM_20
.......
.......
gpio_pad_select_gpio(CAM_PWR);
gpio_set_direction (CAM_PWR, GPIO_MODE_OUTPUT);
gpio_set_level(CAM_PWR, 0);
Related
Has anyone been able to use a 'blackpill' microcontroller (STM32F401) with a 128x64 OLED display, using the SS_OLED library?
I am using the following
Arduino IDE
ST-LINK V2 to program it (using the 3.3V rail to power the MCU)
PB6 as SCL
PB7 as SDA
If I run the I2CScanner app, it finds the display at 0x3C, as expected. Using an oscilloscope, I can see activity on the I2C lines.
If I run the SS_OLED library example 'SS_OLED_TEST', nothing happens; no display and no SCL/SDA activity.
In both cases, the I2C init code looks like this.
Wire.setSDA(PB7);
Wire.setSCL(PB6);
Wire.begin();
Any help would be greatly appreciated!
I'm currently trying to run an MLX90614 sensor on a ESP32 board (lolin32 lite)
This board doesn't have a pin 21 and from a forum I discovered I can use pin 23 and 19.
I tested this out with the I2C scanner code and this works.
Now I like to use Adafruit MLX90614 library and tell it to use pins 23,19.
Adafruit_MLX90614 mlx = Adafruit_MLX90614();
void setup() {
// put your setup code here, to run once:
Serial.begin(115200);
Wire.end();
Wire.setPins(23,19);
Wire.begin();
delay(100);
if (!mlx.begin(90, &Wire)) {
Serial.println("Error connecting to MLX sensor. Check wiring.");
while (1);
};
}
I keep getting "Error connecting to MLX sensor. Check wiring" so it doesn't overwrite the pin settings.
Can this been done?
UPDATE: I found my mistake. I had changed the I2C address of the MLX sensor in a previous project. That is why the I2C scanner code worked and Adafruit default address not.
Hi I would like to configure a custom GPIO pin as output to control a motor on a STM32 H743Zi board running Zephyr RTOS.
The dts file of the board can be found in the folder or a separate file nucleo h743zi.dts code.
I would like to us the arduino pin mapping provided by the board ardunio r3 connector.dtsi code
The overlay file that I've developed so far is as follows code. I would like to configure the D0 pin (as per the arduino connector dtsi file) as a GPIO pin to control the motors.
However, I've not been able to configure the pin and I don't receive a high signal if the pin is turned on.
Any help to resolve this issue is appreciated.
You can refer to the answer in this link:
https://github.com/zephyrproject-rtos/zephyr/discussions/35932
In my case, I use Thunderboard Sensor 2 and my solution as below:
Move to the <board.dsti> in folder /zephyr/dts/arm/silabs/efr32mg.dtsi
insert your define GPIO to use:
...
/ {
zephyr,user {
signal-gpios = <&gpioa 8 GPIO_ACTIVE_HIGH>;
};
...
Here, I use my board portA and pin 8 as schematic
After you save the file, open the main file of your project and insert something as below:
#define ZEPHYR_USER_NODE DT_PATH(zephyr_user)
...
void main(void)
{
const struct gpio_dt_spec signal =
GPIO_DT_SPEC_GET(ZEPHYR_USER_NODE, signal_gpios);
/* Configure the pin */
gpio_pin_configure_dt(&signal, GPIO_OUTPUT_INACTIVE);
...
while(1){
/* Toggle the pin PA8*/
gpio_pin_toggle(signal.port, signal.pin);
k_msleep(SLEEP_TIME_MS);
}
...
I started adventure with arduino and programming 2 months ago.So, I am new in this topics.
Until now I realized few projects including Blynk connected with arduino. The last one was similar to one described in topic but I used the ENC28j60 instead of ESP8266 module and then it worked fine.
The problem started with ESP module.
Short description of project:
The main idea is to control AC light with Blynk App support.
First of all I made a connection according to picture below:
As power source I used the USB phone charger connected with step by voltage converter to get in final the 3.3V source.
I additionally connected the Arduino Uno with relay module like this:
Arduino ====> Relay module
5V ====> VCC
GND ====> GND
Pin 5 ====> IN1
Everythink you can see in pictures below (sorry for quality)
And for now I did almost every step (with so many problems). Here I mean:
1. I checked if arduino is connected with ESP module by serial port -> system report "ready" status.
2. I upload the below (template) Arduino IDE sketch for my project:
#define BLYNK_PRINT Serial
#include <ESP8266WiFi.h>
#include <BlynkSimpleEsp8266.h>
// You should get Auth Token in the Blynk App.
// Go to the Project Settings (nut icon).
char auth[] = "***";
// Your WiFi credentials.
// Set password to "" for open networks.
char ssid[] = "***";
char pass[] = "***";
void setup()
{
// Debug console--
Serial.begin(9600);
Blynk.begin(auth, ssid, pass);
}
void loop()
{
Blynk.run();
}
And finally I started the New project in Blynk. I set the Arduino uno as a hardware model and WiFi as connection type. Then I added the Button and set the Output to D5.
And now (close to the end of project) I met with a problem. After pushing the connect button (in up-right corner) I receive the information that device is connected (Online). Then when I try to push the button to Active Relay - nothing happens.
Whats more. I tried with different pins on Arduino with the same results. And I don't know why (probably because I have still small knowladge) but when I set the Button output value to D2 - after connection when I push it then the diode on ESP module Turn OFF and Turn ON.
I tried to find solution on this forum and in many other places for last 3 days but without any results. That's why I decided to ask You for help. Do you know what did I wrong or what should I add to project to make connection between the Blynk and relay work correct?
Write if you will need some more or detailed information from my side.
Why are you using both the uno and the esp? You can just use the esp instead of the combo, will make your project less power hungry and smaller. If you wonder about using just the esp, you can use the nodemcu boards (which can be found for less that 4€ per unit in China).
I've some example sketches for this (with temperature and humidity), if you want to take a look at those.
When looking at the pictures and code you have postet, it seems that you have flashed the ESP with a Arduino sketch. This is fine if you would like to activate the relay directly with the ESP (without the Arduino UNO).
Then you just have to connect the relay to the ESP instead of to the Arduino. Unfortunately not all relay boards can operate with the 3.3V logic that the ESP supplies, but maybe you'r lucky.
On the other hand, if you would like to use the Arduino UNO with the ESP as Wi-Fi, then you would have to reflash the ESP with the original AT firmware. Then you could connect it to the Arduino and use a sketch that looks something like this.
#define BLYNK_PRINT Serial
#include <ESP8266_Lib.h>
#include <BlynkSimpleShieldEsp8266.h>
char auth[] = "YourAuthToken";
char ssid[] = "YourNetworkName";
char pass[] = "YourPassword";
#include <SoftwareSerial.h>
SoftwareSerial EspSerial(2, 3);
// pin 3 connected to ESP RX and pin 2 connected to ESP TX
// Your ESP8266 baud rate:
#define ESP8266_BAUD 115200
ESP8266 wifi(&EspSerial);
void setup()
{
// Debug console
Serial.begin(9600);
delay(10);
// Set ESP8266 baud rate
EspSerial.begin(ESP8266_BAUD);
delay(10);
Blynk.begin(auth, wifi, ssid, pass);
}
void loop()
{
Blynk.run();
}
And you should remove the connection between RST and GND on the Arduino
I can use digital pins from 1-13 as usual.
For example
relays.firstRelay = new five.Relay ( {
pin:13,
type:'NO'
});
But I am unable to set pin:14. I don't get any output.
Is there a way to set A0 as digital pin and use it in relay?
I am using Arduino Uno
On the UNO, the analog pins will need to be treated a bit differently because of the need to set their pin type. But otherwise having an array of pin objects should be fine. You just need to get the analog pins setup early as operating digitally instead. You may also want to try addressing the pin as A0 instead of 14.