430 MCU Programming Help

smilesword

430 MCU Programming Help [Copy link]

void Init_Timer0_A5(void) { TA0CTL = 0 // Reset Timer0_A5, set the frequency division coefficient to 1 | (1 << 2) // Clear the counter to 0 | (2 << 8) ; // Set the counting clock to SMCLK ; TA0CCR0 = 16000 - 1 ; // SMCK=EX2=16MHz, set the counter overflow time to 1ms TA0CCTL0 = 0 // Initialize capture control | (1 << 4) ; // Enable compare interrupt TA0CTL |= (1 << 4) ; // Set the counter to count up and start} I am a newbie. I don't know how to understand the above program. TA0CCR0 = 16000 - 1; // SMCK=EX2=16MHz, set the counter overflow time to 1ms Mainly, I don't know how to understand this expression. I would like to ask for help from netizens. Thank you in advance.

ienglgge

TA0CCR0 = 16000 - 1; Find the development manual. Find the corresponding register. Look at this assignment statement. Assign each bit to a certain value. Look at the register description. The meaning of each bit will be clear.

qwerghf

The parameter configuration is shown in the 430 specific register. The counting cycle is calculated by TA0CCR0 and SMCK.

57014673

The value of ccr0 will enter an interrupt when the timer overflows this value