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https://github.com/ole1986/pic18f-morsecode
PIC example code to translate ASCII text into morse code blinking LED using serial connection (UART)
https://github.com/ole1986/pic18f-morsecode
microchip-pic microcontroller morse-code pic pic18f
Last synced: 20 days ago
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PIC example code to translate ASCII text into morse code blinking LED using serial connection (UART)
- Host: GitHub
- URL: https://github.com/ole1986/pic18f-morsecode
- Owner: ole1986
- Created: 2020-01-02T19:04:19.000Z (about 5 years ago)
- Default Branch: master
- Last Pushed: 2020-01-03T07:22:58.000Z (about 5 years ago)
- Last Synced: 2024-12-19T15:18:01.623Z (about 1 month ago)
- Topics: microchip-pic, microcontroller, morse-code, pic, pic18f
- Language: Makefile
- Size: 514 KB
- Stars: 0
- Watchers: 2
- Forks: 1
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
Awesome Lists containing this project
README
# PIC18F morse code serial example
This example program demostrates how to use a pic18f26K20 to send data through UART using pin 18 and 17 (RX,TX) and translate it into morse codes.
Once an ASCII text (E.g. "SOS\n") is submitted over serial the controller translates the input into morse codes on pin 6 (RA4).
In addition to this the serial port will receive the morse codes from the controller ("." for short / "-" for long).
```
Welcome to minicom 2.7.1
OPTIONS: I18n
Compiled on Aug 13 2017, 15:25:34.
Port /dev/serial0, 21:00:01
Press CTRL-A Z for help on special keys
sos
...---... (sos)
```
## Hardware requirements
* 1x PIC18F controller (E.g. PIC18F26K20) or any other compatible chip
* 1x Raspberry Pi
* 1x Breadboard
* 8x male/female jumper wires (RPi -> Breadboard)
* 4x male/male jumper wires (Breadboard)
* 2x Resistors (10 K)
* 4x Resistors (470 R) - programming
* 1x LED
## Software requirements
* [MPLAB](https://www.microchip.com/mplab/mplab-x-ide) to compile the source code
* [pickle](https://wiki.kewl.org/dokuwiki/projects:pickle#installation) to program the controller via raspberry
## Pinout (RPi)
*A screenshot of the breadboard pinout for both serial and programmer incl. LED*
**This applies only to PIC18F26K20 - Other chips may be different**
[PIC18F26K20 Datasheet](http://ww1.microchip.com/downloads/en/DeviceDoc/40001303H.pdf)
### Programming
```
R-PI PICMicro GPIO header .pickle
==== ======== =========== =======
3V3-------------------------------VDD--+ PIN 1 (P1-01)
|
GND-------------------------------VSS R1 PIN 19
|
GPIO04--------R3-470R-------------VPP--+ PIN 7 VPP=4
GPIO25--------R4-470R-------------PGC PIN 22 PGC=25
GPIO24--------R5-470R-------------PGD PIN 18 PGD=24
GPIO22--------R6-470R-------------PGM--R2-+ PIN 15 PGM=22
|
///
(R1) 10K !MCLR pull-up
(R2) 10K where appropriate (PGM is not present on all devices).
(R3..R6) 470R.
```
Source: [pickle project page](https://wiki.kewl.org/dokuwiki/projects:pickle)
### Serial
To use the serial connection (UART) two additional jumper wires need to be connected plus one wire for the LED to blink
```
R-PI PICMicro GPIO header .pickle
==== ======== =========== =======
RA4--+ PIN 6
|
R1
|
LED
|
///
GPIO14----------------------------RC7/RX/DT PIN 18
GPIO15----------------------------RC6/TX/CK PIN 17
(R1) 10K or 1K
```
## Build pickle
To build pickle on your Raspberry Pi, please follow [this installation instructions](https://wiki.kewl.org/dokuwiki/projects:pickle#installation)
## Program the firmware
To program the firmware onto your controller, all previous steps are necessary and the programming pinout must be used
Download the latest morsecode firmware [from here](https://github.com/ole1986/pic18f-morsecode/raw/master/dist/XC8_18F87K22_BUILD/production/pic18f16K20.X.production.hex) with your raspberry pi.
Add a ".pickle" file into the same folder with the following content
```
DEVICE=RPI2
SLEEP=1
BITRULES=0x1000
# !MCLR/VPP - PI/O G04
VPP=4
# PGM - PI/O G22
PGM=22
# PGC CLOCK - PI/O G25
PGC=25
# PGD DATA_I/O - PI/O G24
PGD=24
# Debug level (0=NONE, 1=ERROR, 10=INFO)
DEBUG=0
```
Install the firmware using pickle command "p16" from your RPi
```
p16 program pic18f16K20.X.production.hex
```
## Test the program
To test the serial chip connection, the serial pinout must be applied.
Also I recommend to install minicom on your RPi using the following command
```
sudo apt-get install minicom
```
Once minicom is installed use the following command to establish the connection
```
minicom -b 9600 -o -D /dev/serial0
```
By entering "sos" the controller should response with "...---..." and LED should blink properly