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msp430f5529 save to flash memory

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Hello guys i'm working on an application where i need to save 2 float numbers in flash memory (i need them when the msp lose power) ,i have the hardware part done but i can't figure out the coding i'm very new to programing.

I need to do something like this.

int sensorPin = 23;  
int sensorValue = 0; 
float volt;

// loop part
sensorValue = analogRead(sensorPin); 
unsigned long currentMillis = millis();

if(currentMillis - previousMillis > interval) {
    	previousMillis = currentMillis;   

I need to save "energie1" to flash and whe my msp lose power the value stays on and then when i power it back my "energie1" value goes something like this energie1=(media_puteri1*timp/3600)+flash_value;

PS: i read the ENERGIA flash write/read exemple but i don't understand how to save float values;

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