programming doubt in msp430f449

[AnuHV]

HI,
i am planning to receive an analog input in port6.0 from flex sensor.output of flex sensor is 1.9 volt.when i bend the sensor it increases upto 2.5v.

depending upon this value i have to glow the led connected in port1.0


while writing a c code i want to transfer this analog input value to some registers.could some one help me to write the code for it?

 

[AnuHV]

please someone help me ...
i want to know whether while writing c code for msp430f449 we can access port pins individually?

 

[srizbf]

to change the state of the required pin:

//to set P1.0
P1OUT=P1OUT | 1;
//to reset
P1OUT=P1OUT & 0xfe;

 

[AnuHV]

[/COLOR]

to change the state of the required pin:

//to set P1.0
P1OUT=P1OUT | 1;
//to reset
P1OUT=P1OUT & 0xfe;

if it is to get an input from a single port pin?

 

[srizbf]

[/COLOR]


if it is to get an input from a single port pin?

if you want to read port1 , bit 0 ,
then,

if(P1IN&0x01)
yourvariable=1;
else
yourvariable=0;

 

[alexan_e]

I like to use

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Code C - [expand]
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// add this defines
#define SETBIT(ADDRESS,BIT) (ADDRESS |= (1<<BIT)) 
#define CLEARBIT(ADDRESS,BIT) (ADDRESS &= ~(1<<BIT)) 
#define FLIPBIT(ADDRESS,BIT) (ADDRESS ^= (1<<BIT)) 
#define CHECKBIT(ADDRESS,BIT) (ADDRESS & (1<<BIT)) 
#define WRITEBIT(RADDRESS,RBIT,WADDRESS,WBIT) (CHECKBIT(RADDRESS,RBIT) ? SETBIT(WADDRESS,WBIT) : CLEARBIT(WADDRESS,WBIT))
 
// and then you can use
SETBIT(PORTX,2);  // set bit2 of portx (set to 1)
SETBIT(PORTY,0);  // set bit0 of porty
 
CLEARBIT(PORTX,5); // clear bit5 of portx (set to 0)
 
FLIPBIT(PORTX,2);  // invert bit2 of portX, if it was 1 it becomes 0, and if 0 becomes 1
                    // example for portx 0x10101010 the result is 0x10101110
                    
if (CHECKBIT(PORTX,4)) {} else {} // result is true if bit4 of portx is 1, false if it is 0
if (!CHECKBIT(PORTX,4)) {} else {} // result is true if bit4 of portx is 0, false if it is 1
 
 
WRITEBIT(PORTX,0,PORTY,2);   // copy the bit0 of portx to bit2 of porty

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Just replace the PORTX/PORTY with the register you want to read/write (like P1IN)

Alex

 

[AnuHV]

if you want to read port1 , bit 0 ,
then,

if(P1IN&0x01)
yourvariable=1;
else
yourvariable=0;

if i want to read an analog input?