In this short tutorial I'm going to show to you how to implement , in the Arduino UNO environment, the basic functionalities to work with the TCN75.

Materials needed for this tutorial.

• 1 Arduino UNO board (naturally)
• Arduino IDE (naturally)
• 1 TCN75 (naturally I'll use my own board, see related posts)
• 4 jumper cables

Our tcn75 board is described here:

• Working with the RTCC MCP 79410 RTCC (Real Time Clock with Calendar)
  
• How to use the i2c bus with PIC12f1840 (a simple library)
• Temperature sensor and real time clock for Arduino
• A PIC 12f1840 developer board with mcp79410 RTC and tcn75 temperature sensor.

Ok let's start

How to use the TCN75 temperature sensor

In this article I'm going to show to you how to use the TCN75 we have mounted on our boards.

• Temperature sensor and real time clock for Arduino
• A PIC 12f1840 developer board with mcp79410 RTC and tcn75 temperature sensor. 
  

The TCN75 is a very simple temperature sensor but at the same time it is very accurate, with a precision of ±0,5 ° C, fra 25°C≤ TA ≤ 100°C e ±3 °C -55°C≤ TA ≤ +125°C.

On 8th December 2011, ISO has ratified and published as ISO/IEC 9899:2011 the new C11 (C1x) standard for the C programming language. The major changes from the previous standard (C99), as written in the wikipedia, are the following:

The standard includes several changes to the C99 language and library specifications, such as:[6]

Alignment specification (_Alignas specifier, alignof operator, aligned_alloc function, <stdalign.h> header file)

The _Noreturn function specifier

Type-generic expressions using the _Generic keyword. For example, the following macro cbrt(x) translates to cbrtl(x), cbrt(x) or cbrtf(x) depending on the type of x:

#define cbrt(X) _Generic((X), long double: cbrtl, \

                              default: cbrt, \

                              float: cbrtf)(X)

How to use the MCP79410 Real Time Clock

In this article I'm going to show you how to use the MCP 79410 we have mounted on our boards.

• Temperature sensor and real time clock for Arduino
• A PIC 12f1840 developer board with mcp79410 RTC and tcn75 temperature sensor. 

The MCP79410 is a Real Time Clock (RTC) chip that uses a digital compensation of the time to realize an accurate clock/calendar. It has a programmable output line (it is possible to program up to two alarms), it can be backupped by an external battery (there is an ad hoc circuit), it has a small non volatile memory to store data and a small backupped SRAM.

We have developed this library to use the i2c bus on our 12f1840 development board.

http://www.xappsoftware.com/wordpress/?p=3523

http://www.xappsoftware.com/wordpress/?p=3428

Naturally it can be used also with our PICcoletta board and with other boards which use Microchip PICs. Leave a message to this post if you find useful this library or if you use this library with other PICs.

If it is possible you should use constant increments instead of multiplies.

#include <stdio.h>

#include <stdlib.h>

int main1(void)
{
    int i, j;
    for(i=0; i<100; i+=10)
    {
        j=i;
    }
}


#include <stdio.h>

int main()
{
    printf("goodbye, dad\n");
    return 0;
}

source: http://www.muppetlabs.com/~breadbox/rip-dmr.html

The GCC provides the capability to generate optimized compiled code. When you are running gcc to compile your code you can choose between a large number of optimization levels using the following switches:

This Saturday I've seen the light. For the first time since three months I've had the freedom to do what I want. So I have implemented this simple brainfuck interpreter for Arduino.

I tried it on my Arduino UNO dev board, let me know if you try on other boards.