Introduction: Distance Finder Using ARM Cortex-M4
This is a breadboard based project which uses ARM Cortex-M4(Texas Instruments EK-TM4C123GXL) to find the distance using Ultrasonic Sensor. The output can be obtained in "cm" on both 16x2 LCD Screen and Serial Monitor of Energia IDE, Tera Team, Keil uVision or any other virtual terminal software.
We can also use 16x2 LCD Screen or Serial Monitor at the single time, means one thing is optional. During the measurement of distance, a RED LED of EK-TM4C123GXL shows the status of measurement and microcontroller. The whole circuit is powered by +5V (VBUS) and +3.3V of EK-TM4C123GXL..bin file of c99 code is attached with the provided link at the end of this tutorial. .bin file can be uploaded to the microcontroller using LM Flash Programmer.
Step 1: Requirements
The following things are required to get this project done:
1- Texas Instruments EK-TM4C123GXL
2- Potentiometer (eg 5K) (optional)
3- LCD 16x2 (optional)
4- Ultrasonic sensor
5- LM Flash Programmer (software on PC)
=> If you don't know how to use and install LM Flash Programmer, then please check out my previous Instructable, or click on the following links:
Step 2: Pin-outs & Wiring
The Pin-outs & Wiring of ARM Cortex-M4 (Texas Instruments EK-TM4C123GXL) and other peripheral is attached with this step and also given following:
TM4C123GXL => LCD
VBUS => VDD or VCC
GND => VSS
PB4 => RS
GND => RW
PE5 => E
PE4 => D4
PB1 => D5
PB0 => D6
PB5 => D7
+3.3V => A
GND => K
TM4C123GXL => Potentiometer
VBUS => 1st pin
GND => 3rd pin
Potentiometer => LCD
2nd pin => Vo
=> You can set contrast using Potentiometer
TM4C123GXL => Ultrasonic sensor
VBUS => VCC
PA6 => Trig
PA5 => Echo
GND => GND
Step 3: Upload the .bin File
Upload the attached .bin file with this step to ARM Cortex-M4(Texas Instruments EK-TM4C123GXL) using LM Flash Programmer.
Step 4: Get Your Output
After uploading .bin file to ARM Cortex-M4(Texas Instruments EK-TM4C123GXL), you can get your output in "cm" on 16x2 LCD Screen or any of your desired terminal e.g. Energia IDE Serial Monitor, Keil uVision and Tera Team Virtual Terminal etc or both.
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