matheusmdutra

Energia MSP430 WATER FLOW + NRFL2401

11 posts in this topic

Hi, everyone.

 

First of all, sorry for my bad english hahaha

 

I'm new in msp430 and energia, so i have a lot of doubts.

 

I'm creating a water flow system, and i will use two nrf2401 module, a msp430, a rasp (central) and a water flow sensor.

 

i have no idea how to integrate this.

 

i have already installed NRF24 library, and now i need that the MSP430 read the sensor value and send this via RF to rasp.

my doubt is in TX CODE

 

I attached the original codes below. Now i need to integrate this two codes.
Can anyone help me?

 

huges
I attached the original codes

ENRF_-_TX_CODE.ino

water_sensor.ino

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i tried integrate the codes, but i receive this error code:

error: 'pulseCounter' was not declared in this scope

In arduino i didn't have to declare this... 

here, is my code:
 

#include <SPI.h>
#include <Enrf24.h>
#include <nRF24L01.h>
 
 
 
byte statusLed    = 13;
 
byte sensorInterrupt = 0;  // 0 = digital pin 2
byte sensorPin       = 2;
 
// The hall-effect flow sensor outputs approximately 4.5 pulses per second per
// litre/minute of flow.
float calibrationFactor = 4.5;
 
volatile byte pulseCount;  
 
float flowRate;
unsigned int flowMilliLitres;
unsigned long totalMilliLitres;
 
unsigned long oldTime;
 
Enrf24 radio(P2_0, P2_1, P2_2);  // P2.0=CE, P2.1=CSN, P2.2=IRQ
const uint8_t txaddr[] = { 0xF0,0xF0,0xF0,0xF0,0xE1 };
boolean flag = 0;
 
 
void dump_radio_status_to_serialport(uint8_t);
 
void setup() {
  Serial.begin(9600);
 // Set up the status LED line as an output
 
  SPI.begin();
  SPI.setDataMode(SPI_MODE0);
  SPI.setBitOrder(1); // MSB-first
 pinMode(statusLed, OUTPUT);
  digitalWrite(statusLed, HIGH);  // We have an active-low LED attached
  
  pinMode(sensorPin, INPUT);
  digitalWrite(sensorPin, HIGH);
 
  pulseCount        = 0;
  flowRate          = 0.0;
  flowMilliLitres   = 0;
  totalMilliLitres  = 0;
  oldTime           = 0;
 
  // The Hall-effect sensor is connected to pin 2 which uses interrupt 0.
  // Configured to trigger on a FALLING state change (transition from HIGH
  // state to LOW state)
  attachInterrupt(sensorInterrupt, pulseCounter, FALLING);
 
  radio.begin();  // Defaults 1Mbps, channel 0, max TX power
  //radio.setCRC(1,1);
  
 
  radio.setTXaddress((void*)txaddr);
}
 
void loop()
{  
   
   if((millis() - oldTime) > 1000)    // Only process counters once per second
  { 
    // Disable the interrupt while calculating flow rate and sending the value to
    // the host
    detachInterrupt(sensorInterrupt);
        
    // Because this loop may not complete in exactly 1 second intervals we calculate
    // the number of milliseconds that have passed since the last execution and use
    // that to scale the output. We also apply the calibrationFactor to scale the output
    // based on the number of pulses per second per units of measure (litres/minute in
    // this case) coming from the sensor.
    flowRate = ((1000.0 / (millis() - oldTime)) * pulseCount) / calibrationFactor;
    
    // Note the time this processing pass was executed. Note that because we've
    // disabled interrupts the millis() function won't actually be incrementing right
    // at this point, but it will still return the value it was set to just before
    // interrupts went away.
    oldTime = millis();
    
    // Divide the flow rate in litres/minute by 60 to determine how many litres have
    // passed through the sensor in this 1 second interval, then multiply by 1000 to
    // convert to millilitres.
    flowMilliLitres = (flowRate / 60) * 1000;
    
    // Add the millilitres passed in this second to the cumulative total
    totalMilliLitres += flowMilliLitres;
      
    unsigned int frac;
    
    // Print the flow rate for this second in litres / minute
    radio.print("Flow rate: ");
    radio.print(int(flowRate));  // Print the integer part of the variable
    radio.print("L/min");
    radio.print("\t");       // Print tab space
 
    // Print the cumulative total of litres flowed since starting
    radio.print("Output Liquid Quantity: ");        
    radio.print(totalMilliLitres);
    radio.println("mL"); 
    radio.print("\t");       // Print tab space
  radio.print(totalMilliLitres/1000);
  radio.print("L");
    
 
    // Reset the pulse counter so we can start incrementing again
    pulseCount = 0;
    
    // Enable the interrupt again now that we've finished sending output
    attachInterrupt(sensorInterrupt, pulseCounter, FALLING);
      radio.flush();  // Force transmit (don't wait for any more data)
  }
  }
}
 
/*
Insterrupt Service Routine
 */
void pulseCounter()
{
  // Increment the pulse counter
  pulseCount++;
}
  
 
  
 
  delay(1000); 
}

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Well, somebody declared something:

void dump_radio_status_to_serialport(uint8_t);

just add:

void pulseCounter(void);

above setup().

 

Are you using Energia? because it should also generate the prototypes for you. There are some situations where the Arduino IDE gets it wrong, too.

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this 2 codes that i have posted are correct.. (attached above)
the ENFR code is to ENERGIA ide and it is working.
the second code (water flow) is to ARDUINO IDE.
i have to integrate this two codes to work in energia.. 

i tried in several ways, but none worked.

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the second code (water flow) is to ARDUINO IDE.

i have to integrate this two codes to work in energia..

Have you tried getting the Arduino code working in Energia by itself?   If not, try to get it working in Energia before combining the two.  It does not look like you have done basic "porting" to get it to work in Energia. 

 

For example, this: 

byte sensorInterrupt = 0;  // 0 = digital pin 2

The comment says it is supposed to be digital pin 2 but the variable says 0.  And there is no pin 0 in Energia.  You are also writing to pin 13 and calling it the status LED.  Pin 13 is the red LED on an Arduino.  In Energia it is RED_LED.  The code looks like it should be easy to get it going but you must carefully map the pins.

dubnet likes this

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