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/*
* Copyright (c) 2024 Analog Devices Inc.
*
* This file is part of libm2k
* (see http://www.github.com/analogdevicesinc/libm2k).
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 2.1 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
/*
* In order to build the example, add libm2k-sharp.dll as a reference to the project.
* For example, in the command line: mcs analog.cs -reference:libm2k-sharp.dll
* Please make sure that libm2k-sharp.dll and libm2k-sharp-cxx-wrap.dll are in your build folder.
* Please make sure that the location of libm2k is in the PATH.
*
* This example uses EVAL-ADT7420-PMDZ as a slave
* Hardware configuration:
* (ADALM2000) DIO_0 <---> Pin 1 (ADT7420) <---> 10 kilohms resistor <--- V+ (ADALM2000)
* (ADALM2000) DIO_1 <---> Pin 3 (ADT7420) <---> 10 kilohms resistor <--- V+ (ADALM2000)
* (ADALM2000) GND <---> Pin 5 (ADT7420)
* (ADALM2000) V+ ---> Pin 7 (ADT7420)
*/
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace examples
{
class I2c
{
static float ConvertTemperature(byte[] data)
{
byte msb_temp = data[0];
byte lsb_temp = data[1];
UInt16 temp = 0;
float temperature = 0;
temp = (UInt16)((msb_temp << 8) + lsb_temp);
if ((temp & 0x8000) != 0)
{
/*! Negative temperature */
temperature = (float)((UInt32)temp - 65536) / 128;
}
else
{
/*! Positive temperature */
temperature = (float)temp / 128;
}
return temperature;
}
static void Main()
{
M2k context = libm2k.m2kOpen("ip:192.168.2.1");
if (context == null)
{
Console.WriteLine("Connection Error: No ADALM2000 device available/connected to your PC.");
return;
}
Console.WriteLine("Calibrating ADC . . .");
context.calibrateADC();
M2kPowerSupply powerSupply = context.getPowerSupply();
powerSupply.enableChannel(0, true);
powerSupply.pushChannel(0, 3.3);
var m2KI2CInit = new m2k_i2c_init();
m2KI2CInit.scl = 0;
m2KI2CInit.sda = 1;
m2KI2CInit.context = context;
var i2cInitParam = new i2c_init_param();
i2cInitParam.max_speed_hz = 100000;
i2cInitParam.slave_address = 0x48;
i2cInitParam.extra = m2KI2CInit;
var i2cDesc = libm2k.i2c_init(i2cInitParam);
if (i2cDesc == null)
{
Console.WriteLine("I2C Error: Could not configure I2C");
return;
}
Console.WriteLine("Initiating I2C transfer . . .");
byte[] dataWriteConfig = { 0x0B };
libm2k.i2c_write(i2cDesc, dataWriteConfig, 1, i2c_transfer_mode.i2c_general_call | i2c_transfer_mode.i2c_repeated_start)
byte[] dataReadConfig = { 0 };
libm2k.i2c_read(i2cDesc, dataReadConfig, 1, i2c_transfer_mode.i2c_general_call)
Console.WriteLine("Reading the temperature . . .");
byte[] dataWriteTemperature = { 0 };
libm2k.i2c_write(i2cDesc, dataWriteTemperature, 1, i2c_transfer_mode.i2c_general_call | i2c_transfer_mode.i2c_repeated_start)
byte[] dataReadTemperature = { 0, 0 };
libm2k.i2c_read(i2cDesc, dataReadTemperature, 2, i2c_transfer_mode.i2c_general_call)
float temperature = ConvertTemperature(dataReadTemperature);
Console.WriteLine("Temperature: " + temperature + "°C");
libm2k.i2c_remove(i2cDesc);
libm2k.contextClose(context);
}
}
}
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