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Found 4 results

  1. Hello, I want to make a wireless thermometer using two microcontrollers. How do I write the code in Energia to transmit and receive a variable using a 433 Mhz RF module? Transmitter Setup: I have a TM4C123G connected to a RF transmitter using TX(3) pin 34 on the MCU. The TM4C123G is also connected to a LM34DZ Temp sensor. I need help to modify this working code to send the temperature variable using tx(3) pin 34 /*TM4C123G*/ //initializes/defines the output pin of the LM34 temperature sensor int outputpin= A11; // (pin # 2), use A11 analog input //--------------------------------------------------------------------- //this sets the ground pin to LOW and the input voltage pin to high void setup() { Serial.begin(9600); Serial3.begin(9600); //---------------------------------------------------------------------- } void loop() { int rawvoltage= analogRead(outputpin); float millivolts= (rawvoltage/4095.0) * 3300; float fahrenheit= millivolts/10; Serial3.write(fahrenheit); //transmits temperature to receiver Serial.println(fahrenheit);//displays temperatur on Serial monitor delay(200); } Receiver Setup: I also have a MSP432 connected to a RF receiver using rx pin 3 on the MCU. The MSP432 is connected to a 16x2 LCD. I need help to modify this working code to receive the temperature variable using rx pin 3 and display to the lcd. /*Receiver MSP432*/ #include <LiquidCrystal_I2C.h> #include <Wire.h> #define rfReceivePin 3 //RF Receiver pin = pin 3 unsigned int data = 0; // variable used to store received data byte address = 0x3F; // LCD I2C address int columns = 16; // number of columns on LCD int rows = 2; // number of rows on LCD LiquidCrystal_I2C lcd(address, columns, rows); //----------------------------------------------------------------- void setup() { lcd.init(); // initialize the lcd lcd.backlight(); } //----------------------------------------------------------------- void loop() { lcd.clear(); lcd.setCursor(0,0); data=analogRead(rfReceivePin); //listen for data on pin 3 lcd.print("Temperature"); lcd.setCursor(0,1); lcd.print(data); delay(500); }
  2. Is there a way to use the SoftwareSerial library on the Stellaris Launchpad TM4C123GXL board? I am trying to connect a Sparkfun serial enabled LCD screen to the board but the SoftwareSerial library is only compatible with 20, 16, and 8 MHz processors, and the TM4C123GXL is an 80 MHz chip. How can I use this LCD screen with the Stellaris Launchpad over a UART connection? Do I need to use SoftwareSerial or can I do without it? I am programming in Energia 0101E0017 on Windows 7 64 bit. Any help is greatly appreciated, thanks!
  3. HVflash

    Energia UART Interrupt

    Hi, I wonder if it is possible to cause a interrupt when receiving serial data. This would have the big advantage to be able to wake up from sleep mode if new serial data is available. By now, serial data is written in the rx buffer even in sleep mode, but afaik it's not possible to notice that in Energia. I found lots of code for CCS for exactly this application, but i'm not able to port it for Energia. Does anybody already has some example code or may help me to make the CCS code working in Energia? Thanks!
  4. Hi I'm new with energia and I'm trying to use the Hardware serial communication with a Lauchpad Rev. 1.4 so I connect the RX end TX jumpers in cross but it doesn't work...Can anyone help me? this is the simple code I use: void setup() { Serial.begin(9600); } void loop() { Serial.println("Hello !!!"); delay(500); } I try to use also the software serial communication for but it doesn't work
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