MSP430F5438A: ADC12 timer trigger

Hello,
Thanks for the response. So I wrote the code below. Now the problem is I'm getting zero all the time. Not sure if the problem with timer and ADC setup or something conceptual. What I am doing is Set a timer to generate a PWM for the sensor input. Another timer to trigger my ADC12 exactly at the same time the sensor getting the activation pulse. In my ADC12 I set the sample and hold time around 0.26ms (Couldn't able to set it at 0.28ms which is recommended). Then I am sending the ADC data through UART sothat I can check my ADC value (using tera term to see the vaules). I.m not efficient in msp coding that's why didn't use ISR just not deal with additional complicacy.

My Code:
 

#include <msp430.h>

volatile unsigned char volt [5];
volatile unsigned int in_value;

void clock_setup (void);
void clock_setup (void)
{
P11DIR |= BIT0;
P11SEL |= BIT0; // ACLK
P11DIR |= BIT1;
P11SEL |= BIT1; // MCLK
P11DIR |= BIT2;
P11SEL |= BIT2; // SMCLK
P2DIR |= BIT7;
P2SEL |= BIT7; // ADC12 CLK
}

void init_serial (void);
void init_serial (void)
{
P5SEL |= 0xC0; // 5.6 and 5.7 for TX/RX- UCA1
UCA1CTL1 |= UCSWRST;
UCA1CTL1 |= UCSSEL_1; //32768 Hz
UCA1BR0 = 03; // Baudrate 9600
UCA1BR1 = 0x00;
UCA1MCTL = 0x06; // Modulation Sx=3, Fx= 0
UCA1CTL0 = 0x00;
UCA1CTL1 &= ~UCSWRST; // In operation mode

}

void ADC_value (int);
void ADC_value (int ADC_Data)
{
volatile char x=3;
volt [3] = volt [2] = volt [1] = volt [0] = 0x30;
while (ADC_Data > 0)
{
volt [x] = (ADC_Data%10)| 0x30; // Separating unit digit
ADC_Data = ADC_Data/10; // rest of the digit than last digit
x--;
}
volt [4] = '\0';
}

void Send_Serial (void);
void Send_Serial (void)
{
volatile char i=0;
while (volt[i] != '\0')
{
UCA1TXBUF = volt[i];

while (UCA1STAT & UCBUSY);
i++;
}
UCA1TXBUF = 0x0a;
while (UCA1STAT & UCBUSY);
UCA1TXBUF = 0x0d;
while (UCA1STAT & UCBUSY);

}


int main(void)
{
clock_setup();
init_serial ();

WDTCTL = WDTPW + WDTHOLD; // Stop WDT
P8DIR |= BIT6; // P8.6 output
P8SEL |= BIT6; // P8.6 options select
P1DIR |= BIT1;
P1DIR |= BIT1;

// Generating PWM for Sensor input PIN 3
TA1CCR0 = 10617-1; // PWM Period
TA1CCTL1 = OUTMOD_7; // CCR1 reset/set
TA1CCR1 = 10286; // CCR1 PWM duty cycle --> Get a 0.32ms low pulse out of 10ms, goes low at 9.68ms
TA1CTL = TASSEL__SMCLK + MC__UP + TACLR; // SMCLK, up mode, clear TAR

// Configure Timer0_A3 to periodically trigger the ADC12
TA0CCR0 = 10617-1; // PWM Period
TA0CCTL1 = OUTMOD_3; // TACCR1 set/reset
TA0CCR1 = 10286; // TACCR1 PWM Duty Cycle--> triggers ADC12 at 9.68ms which is at the same time the sensor got a low input 
TA0CTL = TASSEL__SMCLK + MC__UP + TACLR; // SMCLK, up mode, clear TAR

P6SEL |= BIT7; //ADC in
ADC12CTL0 = ADC12SHT0_8 + ADC12ON; // Sampling time ((256+13)/(ADC_CLK)=0.26ms around not able to get 0.28ms recommended by sensor datasheet), ADC12 on
ADC12CTL1 = ADC12SHP + ADC12SHS_1; // Use sampling timer + MCLK
ADC12MCTL0 = ADC12INCH_7;


while (1)
{
ADC12CTL0 &= ~ADC12SC;
ADC12CTL0 |= ADC12SC + ADC12ENC;
while (ADC12CTL1 & ADC12BUSY)
in_value = ADC12MEM0 & 0x0FFF;
P1OUT ^= BIT1;
ADC_value (in_value);
Send_Serial ();
}

}

I am attaching the arduino version (Found in Web) of the code also for this sensor. I'm trying to implement same thing in msp430. I tested the code and it works perfect for sensor. I'm attaching this if by any chance I explained anything wrong about the sensor in my statring post.
Arduino code version:

int sensePin = A0;
int ledPin = 9;

int Tsampling = 280;
int Tdelta = 40;
int Tsleep = 9680;

float outVo = 0;
float sigVolt = 0;
float dustLevel = 0;

void setup(){
Serial.begin(9600);
pinMode(ledPin,OUTPUT);
}

void loop(){
digitalWrite(ledPin,LOW); 
delayMicroseconds(Tsampling);

outVo = analogRead(sensePin); 

delayMicroseconds(Tdelta);
digitalWrite(ledPin,HIGH); 
delayMicroseconds(Tsleep);

sigVolt = outVo * (3.3 / 1024);

dustLevel = 0.17 * sigVolt - 0.1;

Serial.print("Measured Signal Value (0-1023): ");
Serial.print(outVo);

Serial.print(" Voltage: ");
Serial.print(sigVolt);

Serial.print(" Dust Density Level: ");
Serial.println(dustLevel);

delay(1000);
}

Hope any of you can help me understand what am I doing wrong!

Thanks,
Row