This page shows you how to setup everything for the course and goes through setting up hardware and software in a fair bit of detail. There is a lot of information to go through because everything has to be in place.
In fact the first setup is the most difficult part of any project to get going and you are going to have learning curves for each piece of software, so take some time to go though this information carefully.
For the programmer I would recommend a PicKit3 as these are USB based and have the necessary ICSP interface. You can easily get these from ebay and use the free MPLAB X software to program the PIC device.
If you need an alternative, you can use ICPROG, which is only relevant if you want to use an older computer with a serial or parallel port built-in. Instructions for using this legacy method are at the end of the page.
For the other components you should have most of the stuff lying around if you have done any type of electronics except for the programmer, RS232 chip and PIC. For getting information out of the project and into the PC a USB to RS232 is needed and this can also be bought on ebay.
Note: You can use a serial port adaptor that does not require you to use an RS232 chip - it plugs directly to the PIC chip.
The course is built around mainly standard components except for the following
Chips You may not have on the bench:
External hardware you need is:
ICSP Programmer - if you are using a different
programmer then check the following:
You will need an ICSP capable programmer, any will do as long as it has the following connections:
Also it must be capable of programming a 16F88.
Hardware required for course:
You will also need to purchase the following hardware:
Preparing the 16F88
MPLAB X programmer (recommended)
NEW Updated all C Project Course files to MikroC PRO V6
The first thing you need to do is down load the compiler : Click Here . Download the executable to your computer, double click it and follow the instructions.
*** NOTE: DO NOT BUY THE COMPILER ***
It has free output up to 2kHex Bytes!
You don't need to buy it.
The course works fantastically well within this limit.
Note: This compiler allows you free use up to 2k output (hex file) size - all the examples in this course generate code below this limit.
Next you need to construct the following circuit:
Note D7 should be placed at the top right of your development board as this will form part of the dice circuit later on.
For this page - see below for BOM for the 1st complete circuit.
Here is the list of parts for the above circuit (or Bill Of Materials):
|1||10u||electrolytic capacitor||2||C1 C3|
|2||100n||Capacitor||3||C2 C4 C5|
|3||1u||electrolytic capacitor||4||C6 C7 C8 C9|
|4||DB9F-90||Dtype connector 9 way RS232 on PC COM port||1||CN1|
|5||2.1mm jack||Power Connector socket showing NC connection||1||CN2|
|7||RED||Light emitting diode||6||D2 D3 D4 D5 D6 D7|
|9||1x4||Header 4 way||1||HD1|
|10||Push button||push button normally open||2||PB1 PB2|
|13||1k||resistor||7||R3 R4 R5 R6 R7 R8 R9|
|15||MAX232CP||RS232 level translator||1||U2|
|16||LM7805C||5V 1A voltage regulator||1||U3|
End ofC Programming Tutorial BOM.
The last 3 components are for the curve tracer which also uses 10k resistors for gain setting.
You also need a circuit board to work on, or a solderless breadboard and wire for connecting up the circuit.
R1 stops the part entering the wrong programming mode (LVP mode). LVP
mode is the default mode (Low Volt Programming) and is always enabled for new
parts but it makes the pin unusable for anything else. Since there are not
many pins in this particular part the first task is to disable LVP mode.
You can do this by programming the part with the first program which has turned off the LVP fuse and at the same time it flashes the LED so once the part is programmed you can see that it's working.
At this point you don't need to do any compilation or C coding so lets just go through the programming process.
Note: Later diagrams may not show R1 as it is only important when 1st programming the part (if you ensure that the LVP control is always set to off in the compiler project edit control panel - see videos for more information on that).
Once LVP is programmed off then the PGM pin becomes a 'normal' pin i.e. you can treat it as normal I/O and use it just like any other programmable I/O pin.
Create a working directory:
Download the following zip file:
|Download file:||Download here.
Download the file "prog00-16F88-intro.zip" to that directory.
Note: I use 7zip - just do a google search for '7zip' if you don't have an unzip program which is free and integrates into the windows shell - meaning you can right click in explorer and directly zip/unzip files.
Unzip the file 'prog00-16F88-intro.zip' in the pic-c-course directory. It will create a directory c:\pic-c-course\prog00-16F88-intro\ in which will be a hex file.
This is the prefered method : Create a pre-built project in MPLABX in the directory that contains the hex file and hit the programming button.
I have created a pages that details this process here:
######### LEGACY INFORMATION FOLLOWS ###########
More details on using ICPROG here.
For this C programming tutorial you should have installed ICPROG so start
that program up now. Setup the hardware interfaces for your programmer using
the options menu.
If you are using the parallel port programmer then the setup details are shown in the image below:
Note: You can set the I/O delay to zero (tested on my parallel port programmer) - this will program the device slightly faster. Also if you use XP you'll need to select the Windows API interface (in the above box).
Note: For Windows XP use Windows API.
Note see module 1 of the course for a video tutorial on ICPROG.
Now open the file (in ICPROG)
Now program the file into the PIC Microcontroller.
Note: You can find detailed instructions on using ICPROG for this C programming tutorial here.
You should now have a circuit with a flashing LED - this is the equivalent
of the "hello World" program you usually find in the start of C courses but
because the microcontroller is only concerned with I/O ports there is no way of
displaying a message yet ...
... later on we'll look at RS232 where you can make a hello world program.
...you have programmed the microcontroller correctly and are now ready to start the C programming tutorial course.
This proves that all the software and hardware is operating correctly.
Things to note about the circuit for the C programming tutorial course:
The internal oscillator is running at 4MHz and saves you using an external
crystal or RC network. Similarly the reset circuit is also internal. Both
these features save pins as what was once a dedicated reset pin can now be used
as an I/O pin. Again using the internal oscillator saves two pins for use as
End of C programming tutorial Setup page.
-------------------------- ICPROG (legacy programmer information ) -------------------------
Use only for older computers that have a parallel port or serial port (and appropriate programming hardware)
Note: This is for older computers that have a
serial port or parallel port (or you fancy building it all yourself).
I started out by building a parallel port interafce - and it works fine - do check on this website for details of that parallel port programmer as you will need to inculde the transmission line termination impedance to make it work over long cables reliably).
Download and install ICPROG which is PC software that
generates the correct serial ICSP signals to program your PIC chip. You can
use it either on a parallel port, serial port or USB port with a USB to serial
adapter - ( USB <-> Serial untested).
Note: Look in left frame for download button.
You should setup the environment variable to icprog.exe so that it can be
called from anywhere but if you don't you can still start icprog by double
clicking icprog.exe in its installation directory.
The installation location is up to you but you should put it into a directory that is in the current path so that windows can find it or add the directory (where you put ICPROG) to the system path environment variable.
Unfortunately setting up the windows path is different for every windows installation from Windows 95 to XP so you will need to find the exact details for your operating system. Windows 95 uses autoexec.bat and config.sys.
For XP you can set the path from Start --> Control panel --> System --> Advanced (tab) --> Environment variables. You can set the path for a user or the system. I usually set the system path but see below:
Note : Do not delete the path variables and only add to the end of them. If unsure select the system path value and copy and paste it to a local editor. There edit it keeping all the original - make sure it is exactly the same with only your additions on the end. e.g. if you want to put icprog.exe in a directory c:\icprog-path add the text 'c:\icprog-path;' to the end. Note save the text editor text and check everything works as before - if it does not go back and set the path to what you started with.
Windows 2000 and XP stop you using the parallel port directly by adding a
layer of software between your program and the parallel port. It's probably
there so that no more than one process (e.g. printer) or user can access it at
the same time - but a 'PC' is a personal computer usually used by one person
this "feature" just gets in the way.
What this means is it is a pain if you want to use the parallel port for hardware. To get round this you have to install another piece or software which *will* allow you access to the parallel port. For ICPROG this program is a system driver and you can also download it from the ICPROG page it is icprog.sys (see instructions for getting this driver below)
For a parallel port programmer you need to install icprog.sys to allow the software to have parallel port access:
Note: A Serial or USB port programmer does not have this restriction.
Open an explorer window and navigate to the icprog install directory,
Download the icprog.sys file to your icprog install directory i.e. in the same directory as icprog.exe.
Using explorer select icprog.exe, right click. Then select the Properties
menu then the Compatibility tab. Make sure compatibility mode is disabled -
icprog will set this for you as you follow the next instructions.
Start ICPROG - a privileged instruction error occurs - ignore this - icprog starts.
Now in icprog choose Menu --> Settings --> Options --> Misc (tab) and set Enable NT/2000/XP Driver - icprog will now re-start with the driver installed.
How to use the MCP23017 to increase your I/O by 16 pins (or more) and use its interrupt system.
How to use I2C. In this tutorial you will learn all about the 2 wire I2C serial protocol. Learn how easy it is to use, how it works and when to use it...
How RS232 Works: What exactly is RS232 and how does it work? - Find out Here!