So, say I open one sensor using an init(const char *fd) type function, create an object, and run for ex: sensor1.init("/dev/i2c-1") with an input of my 1st sensor location. Then I create a 2nd object and run the same function with another sensor ex. sensor2.init("/dev/i2c-2"). When I use either object to call my other class ..
I am trying to modify a piece of code originally designed for an AD5245 to use it for an MCP4462. Both are I2C devices on a Raspberry PI. I’m trying to figure out how to formulate the write code to the device based on the documentation in the image/ If I am not mistaken, I ..
I’m doing my undergraduate thesis and I’m using Arduino to do so. I’m using a bunch of sensors to get measures of my experiment. These sensors are: 1x water flow sensor (uses interrupt to count pulses). 3x vibration sensors. 1x Water flow with TDS sensor embedded (uses interrupt to count pulses as well). 1x differential ..
Hi could someone please explain what does this mean? #define HEX(x) setw(2) << setfill(‘0’) << hex << (int)(x) This is for an i2cDevice class but i dont understand whats being conveyed here. Source: Windows Que..
I am currently experimenting with two MPU6050 which the AD0 is connected via PIN 7 and PIN 8 respectively, and if this is working, I plan to add another 2 more MPU6050 to it. I am using i2cdevlib’s MPU6050 library and what I did in a flow is: Initialize one MPU6050 object Set MPU6050 Object ..
I know that having an arduino with multiple slave addresses is impossible, however i wish to have an arduino that starts out at address A, and if a condition is met switch to address B instead. So not multiple slave addresses, since they’d be one at a time. I simply wish to change it in ..
This code is used for interfacing the POLAR T31 heart rate sensor to the Arduino. I need to take multiple actions when a specific heart rate value is exceeded, so I need to know which variable stores the heart rate BPMs! The code displays the serial monitor but I want to interact with the findings. ..
I am currently doing a Smart Metering device that uses NFC technology to communicate with a mobile phone. This device consists of 3 parts: An MSP432P401R launchpad. A TRF7970 (tag sensor) device connected to J1 and J2 pin arrays A temperature or humidity or both sensor that I still have to buy. I want to ..
Please find the below code snippet and let me know that ways to troubleshoot. #include <stdbool.h> #include <stdint.h> #include <stdarg.h> #include "inc/hw_i2c.h" #include "inc/hw_memmap.h" #include "inc/hw_types.h" #include "inc/hw_ints.h" #include "driverlib/gpio.h" #include "driverlib/i2c.h" #include "driverlib/interrupt.h" #include "driverlib/pin_map.h" #include "driverlib/sysctl.h" #include "driverlib/uart.h" #include "utils/uartstdio.h" #include "driverlib/gpio.h" #define SLAVEADDRESS_EXT 0x65 #define NUM_OF_I2CBYTES 255 #define reg_noOp 0x00 #define reg_decodeMode ..
I am trying to interface a mega with a due per I2C. I have done: grounds are shared. SCL/SDA on mega 2560 (not 20/21) are connected to SCL1/SDA1 on due. SCL/SDA of due (20/21) are connected to an imu bno055 which is working fine. no pull up resistors are connected. on mega I do: #include ..