中断一次也进不去

发表于 2023-1-8 19:36

void SCA60C_init(void)
{

ADC12CTL0 = ADC12SHT02 + ADC12ON; // 打开ADC12设置采样间隔
ADC12CTL1 = ADC12SHP+ADC12CONSEQ_1; // 采样保持出发信号选择采样定时器序列通道单次转换
ADC12MCTL0 = ADC12INCH_6; // 模拟输入通道选择通道A6
ADC12MCTL1 = ADC12INCH_7+ADC12EOS; // 模拟输入通道选择通道A7
ADC12CTL0 |= ADC12ENC; // 使能转换
ADC_PORT_SEL |= 0xff; //ADC选择 P6.6 P6.7作为输入（A6）（A7）
ADC12IE = 0x08;
}
uint16_t *SCA60C_getValue(void)
{
ADC12CTL0 |= ADC12SC; // Start sampling/conversion开始采样转换
__bis_SR_register(LPM4_bits+GIE); // ADC12_ISR will force exit进入LPM4并全局中断调试到这里就发现下一步没有进入中断而是直接继续执行
///////省略若干代码}

////中断服务程序
#pragma vector = ADC12_VECTOR
__interrupt void ADC12_ISR(void)
{
switch (__even_in_range(ADC12IV, ADC12IV_ADC12IFG15))
{
………………
case ADC12IV_ADC12IFG3:
positionData[0] = ADC12MEM0; // 读取转换结果
positionData[1] = ADC12MEM1; // 读取转换结果
__bic_SR_register_on_exit(LPM4_bits); // Exit active CPU退出低功耗唤醒CPU
break;
…………
default:
break;
}
}

发表于 2023-1-8 19:37

中断向量指向错误了把，你只用了ad0和ad1，应该进ifg1

发表于 2023-1-8 19:41

试一下序列通道多次转换吧

发表于 2023-1-8 19:41

中断是可以进去，因为你可以看到数据采集的结果已经存入定义的变量中了，但是问题在于中断中的退出低功耗函数没有被执行，CPUOFF标志位一直=1

发表于 2023-1-8 19:47

ADC10CTL0 / ADC10CTL1 后面的赋值把前面的覆盖了吧。

发表于 2023-1-8 19:48

ADC10CTL0 = ADC10ON + ADC10SHT_2 + MSC + ADC10IE; //打开内核,采样保持时间，中断允许

发表于 2023-1-8 19:54

ADC12MCTL1 = INCH_1+EOS; // ref+=AVcc, channel = A1, end seq.
ADC12IE = 0x02; // Enable ADC12IFG.1

发表于 2023-1-8 19:54

WDTCTL = WDTPW+WDTHOLD; // Stop watchdog timer
P6SEL = 0x0F; // Enable A/D channel inputs
ADC12CTL0 = ADC12ON+MSC+SHT0_8; // Turn on ADC12, extend sampling time
// to avoid overflow of results
ADC12CTL1 = SHP+CONSEQ_3; // Use sampling timer, repeated sequence
ADC12MCTL0 = INCH_0; // ref+=AVcc, channel = A0
ADC12MCTL1 = INCH_1; // ref+=AVcc, channel = A1
ADC12MCTL2 = INCH_2; // ref+=AVcc, channel = A2
ADC12MCTL3 = INCH_3+EOS; // ref+=AVcc, channel = A3, end seq.
ADC12IE = 0x08; // Enable ADC12IFG.3
ADC12CTL0 |= ENC; // Enable conversions
ADC12CTL0 |= ADC12SC; // Start conversion

发表于 2023-1-8 19:59

ADC10CTL0 = SREF_4 + REFON;

发表于 2023-1-8 19:59

DC的中断向量 #pragma vector=ADC12_VECTOR

发表于 2023-1-8 20:04

__interrupt void ADC12ISR (void)
{
static unsigned int index = 0;

A0results[index] = ADC12MEM0; // Move A0 results, IFG is cleared
A1results[index] = ADC12MEM1; // Move A1 results, IFG is cleared
A2results[index] = ADC12MEM2; // Move A2 results, IFG is cleared
A3results[index] = ADC12MEM3; // Move A3 results, IFG is cleared
index = (index+1)%Num_of_Results; // Increment results index, modulo; Set Breakpoint here
}

发表于 2023-1-8 20:05

ADC12CTL0 = ADC12SHT02 + ADC12ON;       // Sampling time, ADC12 on
ADC12CTL1 = ADC12SHP;                   // Use sampling timer
ADC12IE = 0x01;                         // Enable interrupt
ADC12CTL0 |= ADC12ENC;

ADC12CTL0 |= ADC12SC;                // Start sampling/conversion

发表于 2023-1-8 20:10

开启内部参考源 ADC12CTL0 = REF2_5V + REFON

发表于 2023-1-8 20:10

在使用DAC之前，必须开启内部参考源

发表于 2023-1-8 20:14

以A0定时器作为采样输入信号源的、单通道单次模式采样。

发表于 2023-1-8 20:16

看看这个几个寄存器配置是否正确呢

发表于 2023-1-8 20:20

开启参考电压2.5v以供DA使用。

发表于 2023-1-8 20:21

模拟输入A0对应的转换结果是最稳定、可信的

发表于 2023-1-8 20:25

AD的采集方法的根据实际的设计需要选择的即可。

发表于 2023-2-3 19:39

中断是可以进去尝试一下序列通道多次转换吧

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