Here are some topics you could explore further:
- Timers - How to use the onboard timers for things like blinking LEDs, delays, etc.
- A/D Converter - How to read analog sensor values using the analog to digital converter
- Serial Communication - How to send/receive data over the serial port
- External Interrupts - How to trigger code using external interrupt pins
- Memory - Understanding program and data memory limitations
- Advanced C Programming - Pointers, structures, functions for more complex programs
- Peripherals - Interfacing with additional hardware like buttons, sensors, displays
- Projects - Come up with an example project to apply what you've learned
2. Main purpose:
◦ To run programs on devises
“Mini Computer” – Contains memory space
Devise for embedded control
Use a computer to program
Can download programs from computer
Can output information to computer
Contains input/output ports
3. Everywhere!
◦ Computers
◦ Remote controls
◦ Cell phones
◦ Cars (engine, antilock breaks, cruise control, etc.)
◦ Microwaves
◦ Dishwashers
◦ TVs
◦ DVD Players
◦ Almost every electronic with a user interface
8. Used For
◦ Writing Programs
◦ Sending Programs to C8051
Programmed in C
Used For displaying text from:
◦ Main Program
◦ Input
9. Be Careful with circuit
◦ Circuit boards are very delecate
Only hold circuits by the edges
◦ Do not touch anything metal
Before setting down:
◦ Make sure rubber feet are in tact
◦ Make sure area is clean and dust-free
When storing:
◦ Use anti-static bag and cushioned packaging
◦ Store at room temperature
10. To USB
Debug
Adapter
To Power
Cord
LED should light up
when powered
11. USB to
Computer
To power
LEDs should light
outlet
up when in use
12. 1. Open SiLabs IDE
2. Go to File New File
3. Type in C Program
Copy Sample Program:
#include <stdio.h>
main ()
{
printf(“PDI Studio 5/n");
}
13. 4. Compile program by pressing the
Assemble/Compile button on the toolbar or
press Project Assemble/Compile File
5. Build program by pressing the Build/Make
button on the toolbar or press Project
Build/Make Project
Assemble/Compile Build/Make
Button Button
Note: If your program does not work, it will
notify you at steps 4 and 5 and you will have
to debug before attempting to connect
14. 6. Go to Options Connection options and
choose USB Debug Adapter and then OK
15. 7. Press the Connect button (or alt c)
Connect
Button
LEDs on the Debug Adapter should now be on
16. 8. Press the Download code button
Download
Code Button
17. Go to Project Target Build Configuration
Enable automatic connect/download after
build and then press build again
18. Go to C:SiLabsMCUExamplesC8051F02x
Click on the “Blinky” folder, and open the c
file in IDE
Press on the green “go” button
The green led on the board should start
blinking
Press the red button for the program to stop
Each program has a description of function
and reason for different lines
Use these programs as guilds for your
programs
19.
20. 8 ports, 0 through 7
Each port is 1 byte (8 bits)
wide
You can address to entire
bytes or individual bits
Each port can be assigned as
input or output
C8051 will read the ports as
◦ 0 volts as false
◦ +3 volts as true
21. Setting by bit (one of eight bits of the port)
◦ To assign b7 of port 0 :
sbit bit7 = P0^7;
bit7 = 1;
22. Set as Input
◦ Port 3 pin 7
P3MDout &= ~0x80;
P3 | = 0x80; *****
Set as Output
◦ Port 2 pin 2
P2MOUT |= 0x04
23. For individual bits, first read entire port, then
use masking to determine value of bit
Describe Masking Here
25. Change settings and connect (try different
com numbers) **
26. Right click on Serial-COM3 and select
“Session Options…”
27. Click on emulation, change the scrollback
buffer to 32000, and press ok.
28. Make a new project and file in IDE (save as
384test.c
Copy this program:
#include "c8051.h"
int main()
{
Sys_Init();
printf("nnntesting...n");
printf("done for now...n");
while(1);
}
29. Compile and build the code
Connect and download code
Start the code
Text should display on Secure CRT window
***
30. Embedded Control Course Materials
http://litec.rpi.edu/course.php
IDE Software:
http://litec.rpi.edu/Postings/UsingSiLabsIDE.
html
C8051 User Guide
http://litec.rpi.edu/Postings/C51_User_Guide
.pdf
C8051 Manual:
http://litec.rpi.edu/Postings/C8051F02xRev1
_4.pdf
While computers can be used for many different functions with many different programs, microcontrollers generally are used for one purpose, storing only one main program in ROM memory. They are usually “embedded” inside another devise, hence the name embedded control.
You need to be able to use the computer to send programs to the microcontroller. You also need to program the microcontroller using c-programming. Depending on what you are using the microcontroller for, you may need to know some circuitry.
