KC868-A4S ESP32 I/O pin define

[admin]

#define ANALOG_A1  36
#define ANALOG_A2  39
#define ANALOG_A3  34
#define ANALOG_A4  35

IIC SDA:4
IIC SCL:16

Relay_IIC_address 0x24
P0--P3: for relay1-relay4
P4--P7: for DI9--DI12

Input_IIC_address 0x22  for DI1-DI8

PCA9685 IIC address: 0x00

DS18B20/DHT11/DHT21/LED strip -1: 5
DS18B20/DHT11/DHT21/LED strip -2: 14


Ethernet (LAN8720) I/O define:

#define ETH_ADDR        0
#define ETH_POWER_PIN  -1
#define ETH_MDC_PIN    23
#define ETH_MDIO_PIN  18
#define ETH_TYPE      ETH_PHY_LAN8720
#define ETH_CLK_MODE  ETH_CLOCK_GPIO17_OUT


RS485:
RXD:GPIO33
TXD:GPIO32

GSM:
RXD:GPIO13
TXD:GPIO15

[DanielGuerrero]

Hi, I am tried to use i2c (iic), with a bme 280 sensor, but it does not works, please caun you help to fix the problem or can you provide me a explication how to use the sensor. I used the netx programation:
#include <Wire.h>
#include <SPI.h>
#include <Adafruit_Sensor.h>
#include <Adafruit_BME280.h>

#define BME_SCK 13
#define BME_MISO 12
#define BME_MOSI 11
#define BME_CS 10

#define SEALEVELPRESSURE_HPA (1013.25)

Adafruit_BME280 bme; // I2C


unsigned long delayTime;

void setup() {
Serial.begin(9600);
while(!Serial); // time to get serial running
Serial.println(F("BME280 test"));

unsigned status;

// default settings
status = bme.begin();
// You can also pass in a Wire library object like &Wire2
status = bme.begin(0x76);
if (!status) {
Serial.println("Could not find a valid BME280 sensor, check wiring, address, sensor ID!");
Serial.print("SensorID was: 0x"); Serial.println(bme.sensorID(),16);
Serial.print(" ID of 0xFF probably means a bad address, a BMP 180 or BMP 085\n");
Serial.print(" ID of 0x56-0x58 represents a BMP 280,\n");
Serial.print(" ID of 0x60 represents a BME 280.\n");
Serial.print(" ID of 0x61 represents a BME 680.\n");
while (1) delay(10);
}

Serial.println("-- Default Test --");
delayTime = 1000;

Serial.println();
}


void loop() {
printValues();
delay(delayTime);
}


void printValues() {
Serial.print("Temperature = ");
Serial.print(bme.readTemperature());
Serial.println(" °C");

Serial.print("Pressure = ");

Serial.print(bme.readPressure() / 100.0F);
Serial.println(" hPa");

Serial.print("Approx. Altitude = ");
Serial.print(bme.readAltitude(SEALEVELPRESSURE_HPA));
Serial.println(" m");

Serial.print("Humidity = ");
Serial.print(bme.readHumidity());
Serial.println(" %");

Serial.println();
}

[admin]

you need to check where to define I2C bus GPIO pins, SCL and SDA pins.

[DanielGuerrero]

you need to check where to define I2C bus GPIO pins, SCL and SDA pins.

okay, but, please, how  can I do it ?

[admin]

set SDA,SCL pin define as this photo.
   

[DanielGuerrero]

set SDA,SCL pin define as this photo.

so, like this ? ....

#include <Wire.h>
#include <SPI.h>
#include <Adafruit_Sensor.h>
#include <Adafruit_BME280.h>



#define SEALEVELPRESSURE_HPA (1013.25)
#define SDA  4
#define SCL  16

Adafruit_BME280 bme; // I2C

unsigned long delayTime;

void setup() {
    Serial.begin(9600);
    while(!Serial);    // time to get serial running
    Serial.println(F("BME280 test"));

    unsigned status;
 
    status = bme.begin(); 
 
    status = bme.begin(0x76);
    if (!status) {
        Serial.println("Could not find a valid BME280 sensor, check wiring, address, sensor ID!");
        Serial.print("SensorID was: 0x"); Serial.println(bme.sensorID(),16);
        Serial.print("        ID of 0xFF probably means a bad address, a BMP 180 or BMP 085\n");
        Serial.print("  ID of 0x56-0x58 represents a BMP 280,\n");
        Serial.print("        ID of 0x60 represents a BME 280.\n");
        Serial.print("        ID of 0x61 represents a BME 680.\n");
        while (1) delay(10);
    }
   
    Serial.println("-- Default Test --");
    delayTime = 1000;

    Serial.println();
}


void loop() {
    printValues();
    delay(delayTime);
}


void printValues() {
    Serial.print("Temperature = ");
    Serial.print(bme.readTemperature());
    Serial.println(" °C");

    Serial.print("Pressure = ");

    Serial.print(bme.readPressure() / 100.0F);
    Serial.println(" hPa");

    Serial.print("Approx. Altitude = ");
    Serial.print(bme.readAltitude(SEALEVELPRESSURE_HPA));
    Serial.println(" m");

    Serial.print("Humidity = ");
    Serial.print(bme.readHumidity());
    Serial.println(" %");

    Serial.println();
}

[KinCony Support]

set SDA,SCL pin define as this photo.

so, like this ? ....

#include <Wire.h>
#include <SPI.h>
#include <Adafruit_Sensor.h>
#include <Adafruit_BME280.h>



#define SEALEVELPRESSURE_HPA (1013.25)
//delet these two command
#define SDA  4
#define SCL  16

Adafruit_BME280 bme; // I2C

unsigned long delayTime;

void setup() {
    Serial.begin(9600);
    wire.begin(4,16);//add this command
    while(!Serial);    // time to get serial running
    Serial.println(F("BME280 test"));

    unsigned status;
 
    status = bme.begin(); 
 
    status = bme.begin(0x76);
    if (!status) {
        Serial.println("Could not find a valid BME280 sensor, check wiring, address, sensor ID!");
        Serial.print("SensorID was: 0x"); Serial.println(bme.sensorID(),16);
        Serial.print("        ID of 0xFF probably means a bad address, a BMP 180 or BMP 085\n");
        Serial.print("  ID of 0x56-0x58 represents a BMP 280,\n");
        Serial.print("        ID of 0x60 represents a BME 280.\n");
        Serial.print("        ID of 0x61 represents a BME 680.\n");
        while (1) delay(10);
    }
   
    Serial.println("-- Default Test --");
    delayTime = 1000;

    Serial.println();
}


void loop() {
    printValues();
    delay(delayTime);
}


void printValues() {
    Serial.print("Temperature = ");
    Serial.print(bme.readTemperature());
    Serial.println(" °C");

    Serial.print("Pressure = ");

    Serial.print(bme.readPressure() / 100.0F);
    Serial.println(" hPa");

    Serial.print("Approx. Altitude = ");
    Serial.print(bme.readAltitude(SEALEVELPRESSURE_HPA));
    Serial.println(" m");

    Serial.print("Humidity = ");
    Serial.print(bme.readHumidity());
    Serial.println(" %");

    Serial.println();
}