功能

msp430g2553单片机，读取adc电压，显示到oled

硬件

oled

// ------------------------------------------------------------

// IO口模拟I2C通信

// SCL接P2^0

// SDA接P2^1

采集P1.4电压 0到3.3V

部分程序

cpp
unsigned int volt;
int main(void)
{
    char SENDSTR[20];
    WDTCTL = WDTPW + WDTHOLD; /* Stop WDT */
    OLED_Init(); /* OLED初始化 */
    while (1)
    {
        ADC10CTL0 |= ENC + ADC10SC;             // Sampling and conversion start
        __bis_SR_register(CPUOFF + GIE);      // LPM0, ADC10_ISR will force exit
        volt=volt*3.3*100/1024;
        SENDSTR[0] = volt % 1000 / 100 + '0';
        SENDSTR[1] =  '.';
        SENDSTR[2] = volt % 100 / 10 + '0';
        SENDSTR[3] = volt % 10 + '0';
        SENDSTR[4] = 'V';
        SENDSTR[5] = 0;
        OLED_ShowString(0, 2, SENDSTR);
        delay_ms(100);
    }
}
// ADC10 interrupt service routine
#pragma vector=ADC10_VECTOR
__interrupt void ADC10_ISR(void)
{
    volt = ADC10MEM;
    __bic_SR_register_on_exit(CPUOFF);        // Clear CPUOFF bit from 0(SR)
}

全部程序

cpp
https://docs.qq.com/sheet/DUEdqZ2lmbmR6UVdU?tab=BB08J2