[General] Msp430 12-bit adc register configuration

[santh92]

Hi, everyone

I have started working on MSP430F5438A microcontroller.
I have gone through the datasheet for the corresponding device.
I learnt the register configuration for ADC12_A based on that i written a code...
Kindly found my code below and give me some idea to configure the registers are better way.
If i did any mistakes please forgive me....

---

Code C - [expand]
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
#include "io430.h"
 
int main( void )
{
  // Stop watchdog timer to prevent time out reset
  WDTCTL = WDTPW + WDTHOLD;
  
  P6SEL |= 0x80;        // ENABLE ADC CHANNEL A7
  // ADC CONTORL REGISTER INITIALIZATION //
  // ADC CONTROL REGISTER 0 ///////////////////////////////////////////////////
  ADC12CTL0  = ADC12SHT0x0;      // SETTING SAMPLING TIME 
  ADC12CTL0 |= MSC;              // ENABLE MULTIPLE SAMPLE CONVERSION
  ADC12CTL0 |= ADC12REF2_5;      // REFERENCE VOLTAGE
//ADC12CTL0  = ADCREFON;
  ADC12CTL0 |= ADC12ON;          // ENABLE ADC12 CORE
//ADC12CTL0  = ADC12OVIE;
//ADC12CTL0  = ADC12TOVIE;  
  ADC12CTL0 |= ADC12ENC;         // ENABLE CONVERSION        
  ADC12CTL0 |= ADC12SC;          // ENABLE START CONVERSION
              
  // ADC CONTROL REGISTER 1 ///////////////////////////////////////////////////
  ADC12CTL1  = ADC12CSTARTADDx7; // ENABLE 7TH CHANNEL        
  ADC12CTL1  = ADC12SHSx0;       // ENABLE START CONVERSION
  ADC12CTL1 |= ADC12SHP;         // ENABLE SAMPLING TIMER
  ADC12CTL1  = ADC12SSELx2;      // ENABLE MASTER CLOCK
  ADC12CTL1  = ADC12CONSEQx2;    // ENABLE MODE(REPEATED SINGLE CHANNEL)
//ADC12CTL1  = ADC12BUSY;
  
  // ADC CONTROL REGISTER 2 /////////////////////////////////////////////////
  ADC12CTL2 &= ADC12PDIV;       // SET PREDIVIDER DEFAULT
  ADC12CTL2 &= ADC12TCOFF       // TEMPERATURE SENSOR DISABLED
  ADC12CTL2  = ADC12RESx2       // 12-BIT RESOLUTION ENABLED
  ADC12CTL2 &= ADC12DF;         // DATA READ BACK FORMAT(UNSIGNED)
  ADC12CTL2 &= ADC12SR;         // ENABLE SAMPLING RATE(200 ksps)
//ADC12CTL2 &= ADC12REFOUT;     // ENABLE REFERENCE OUTPUT
//ADC12CTL2 &= ADC12REFBURST;   // REFERENCE BUFFER ENABLE
  
  // CONVERSION MEMORY REGISTER ////////////////////////////////////////////
  // CONVERSION MEMORY CONTROL REGISTER ////////////////////////////////////
      P6SEL |= 0x80;            // ENABLE ADC CHANNEL A7
  // ADC12IE REGISTER //////////////////////////////////////////////////////
      ADC12IE7 = 0x080;         // ENALBLE INTERRUPT FOR CHANNEL7
  // ADC12IFG REGISTER /////////////////////////////////////////////////////
      ADC12IFG7 = 0x80;         // ENABLE INTERRUPT FLAG
  // ADC12IV REGISTER //////////////////////////////////////////////////////
      ADC12IV = 0x14;           // ENABLE ADC12MEM7 AND ADC12IFG7
 
}

---