Open JL1946 opened 10 months ago
Hi @JL1946 sorry for the lack of instructions on the use of the component. The i2c_bus.h file is part of a component named i2c_bus found here: https://github.com/mauriciobarroso/i2c_bus.git
The libraries sht4x and i2c_bus work together, the following code show how they must be used.
#include "i2c_bus.h"
#include "sht4x.h"
i2c_bus_t i2c_bus;
sht4x_t sht41;
void app_main(main) {
/* Initialize I2C bus */
i2c_bus_init(&i2c_bus, /* I2C bus instance */
I2C_NUM_0, /* I2C port number */
I2C_BUS_SDA_PIN, /* I2C SDA gpio number */
I2C_BUS_SCL_PIN, /* I2C SCL gpio number */
false, /* I2C SDA pullup resistor */
false, /* I2C SCL pullup resistor */
400000)); /* I2C frequency */
/* Initialize SHT4x */
sht4x_init(&sht41, /* SHT4x instance */
&i2c_bus, /* I2C bus instance pointer */
SHT41_I2C_ADDR_44, /* I2C device address */
NULL, /* Use default I2C bus read funciton */
NULL); /* Use default I2C bus read funciton */
/* Get and print temperature and humidity */
float temp, hum;
sht4x_measure_high_precision(&sht41, &temp, &hum);
printf("Temperature: %f, Humidity: %f", temp, hum);
}
thank you very much... I do have another question... could you advise on how to implement an SHT4x and mcp23008 port expander (address 0x20) together on the same i2c bus? I am working with both devices and am using the NSBum mcp23008 library (https://github.com/NSBum/esp32-mcp23008.git)... thanks again for your prompt response...
I would have to write an mcp23008 library compatible with i2c_bus. It's not something too complex, but for now I don't have enough time.
Would like to use your library in my application... I find that it is well done and clearly annotated... However, I cannot find the include file "i2c_bus.h" in the esp-idf repo... Please add to your repo, or indicated where to get it from...
thank you