Learning about basic io based on MSP430F5438

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Learning about basic io based on MSP430F5438 [Copy link]

1. Familiar with the clock system of MSP430 2. Operate GPIO [cpp] view plain copy // Clock default situation // FLL clock FLL selects XT1 // Auxiliary clock ACLK selects XT1 32768Hz // Main system clock MCLK selects DCOCLKDIV 1048576Hz // Subsystem clock SMCLK selects DCOCLKDIV 1048576Hz // If XT1 fails to start, ACLK automatically switches to REFO, // FLL automatically switches to REFO // In the case of XT1 startup failure, P7.0 and P7.1 peripheral functions are not initialized #include  
int main(void) { WDTCTL = WDTPW+WDTHOLD; // Stop watchdog P4DIR |= BIT0; // P4.0 output status while(1) { P4OUT ^= BIT0; // Flip P4.0 __delay_cycles(60000); // Software delay } }