Tool/software: Code Composer Studio
Hi,
I am using MSP430FR6972.
I have made the ADC Program(ADC_12).
I want to calculate the dB.
Can any one tell me,
How to calculate the dB value.
For reference ADC Program :
ADC INITIALIZE==============================
void adc(void)
{
P9SEL1 |= BIT7;
P9SEL0 |= BIT7;
// Configure ADC12
// Configure ADC12
ADC12CTL0 = ADC12ON | ADC12SHT0_2; // Turn on ADC12, set sampling time..16 clock cycle
ADC12CTL1 = ADC12SHP | ADC12SSEL1; // Use sampling timer,ACL SELECT
ADC12MCTL0 = ADC12VRSEL_0 | ADC12INCH_15; // Vr+ = VeREF+ (ext) and Vr-=AVss
ADC12CTL0 |= ADC12ENC;
}
Display the ADC value on LCD================================
void adctest(void)
{
ADC12CTL0 |= ADC12SC; // Start conversion-software trigger
while (!(ADC12IFGR0 & BIT0));
ADCvar = ADC12MEM0; // Read conversion result
LCD[2] = lcd_num[(ADCvar /1000)];
LCD[3] = lcd_num[((ADCvar%1000)/100)];
LCD[4] = lcd_num[((ADCvar %100)/10)];
LCD[5] = lcd_num[(ADCvar %10)];
}
Checking it in main Function.
My ADC have no problem.
I want to check the dB value.
How to do that?
regards,
Srijit.
