This program demonstrates serial communications and digital output. I have a similar program for the Arduino Uno. The purpose of this program is to compare mbed and Arduino code.
Fork of Serial_ex_2 by
This is the corresponding Arduino/Wiring .ino program:
/* Serial2RGB_A
Toggles RGB LED junctions based on characters received via serial connection. Echos characters sent.
Hardware Required:
Arduino (or similar board as written)
Created by Dr. C. S. Tritt
Revision History
16-07-07 v. 1.0 Initial development (on TI MSP432). 17-03-13 v. 1.1 Ported to Arduino boards. 17-03-14 v. 1.2 Added echo of read characters.
- /
Use defines for pin IDs and other constants
- define RED_PIN 9 RED_LED
- define GRN_PIN 10 GREEN_LED
- define BLU_PIN 11 BLUE_LED
- define BAUD 9600 Other settings default to 8-N-1.
char inChar; boolean redState = LOW; boolean grnState = LOW; boolean bluState = LOW;
void setup() { Initialize the pins as an output. Assumes adjacent pins. for (int led = RED_PIN; led <= BLU_PIN; led++) { pinMode(led, OUTPUT); } Initialize serial communication. Serial.begin(BAUD); Set baud rate. }
void loop() { Read serial if available. if (Serial.available() > 0) { get incoming byte: inChar = (char) Serial.read(); Read and convert a value. Serial.print(inChar); Echo what was read. Use it to toggle outputs (LED states) if (inChar == 'r') { redState = !redState; digitalWrite(RED_PIN, redState); } else if (inChar == 'g') { grnState = !grnState; digitalWrite(GRN_PIN, grnState); } else if (inChar == 'b') { bluState = !bluState; digitalWrite(BLU_PIN, bluState); } } }
main.cpp@0:8d318218bac1, 2017-01-19 (annotated)
- Committer:
- mab5449
- Date:
- Thu Jan 19 14:23:37 2017 -0600
- Revision:
- 0:8d318218bac1
- Child:
- 1:fdb8ecdf954f
Initial commit. Ported code snippets to mbed OS 5 projects
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
mab5449 | 0:8d318218bac1 | 1 | #include "mbed.h" |
mab5449 | 0:8d318218bac1 | 2 | //K64F |
mab5449 | 0:8d318218bac1 | 3 | Serial pc(USBTX, USBRX); // tx, rx |
mab5449 | 0:8d318218bac1 | 4 | Serial device(MBED_CONF_APP_UART1_TX, MBED_CONF_APP_UART1_RX); // tx, rx |
mab5449 | 0:8d318218bac1 | 5 | |
mab5449 | 0:8d318218bac1 | 6 | int main() { |
mab5449 | 0:8d318218bac1 | 7 | while(1) { |
mab5449 | 0:8d318218bac1 | 8 | if(pc.readable()) { |
mab5449 | 0:8d318218bac1 | 9 | device.putc(pc.getc()); |
mab5449 | 0:8d318218bac1 | 10 | } |
mab5449 | 0:8d318218bac1 | 11 | if(device.readable()) { |
mab5449 | 0:8d318218bac1 | 12 | pc.putc(device.getc()); |
mab5449 | 0:8d318218bac1 | 13 | } |
mab5449 | 0:8d318218bac1 | 14 | } |
mab5449 | 0:8d318218bac1 | 15 | } |