This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

MSP432E401Y: 请问这样的adc采样思路正确吗

Part Number: MSP432E401Y


为了达到2m的采样速率 我的配置如下

systemClock = MAP_SysCtlClockFreqSet((SYSCTL_XTAL_25MHZ | SYSCTL_OSC_MAIN |
SYSCTL_USE_PLL | SYSCTL_CFG_VCO_320),
120000000);

ADC0->CC=0x90;

 MAP_TimerLoadSet(TIMER0_BASE, TIMER_A, systemClock/(2000000));

adc用pll vco作为时钟源 div分频10倍 320m的pll vco 分成32m 

然后用timerA 2m的速度触发

走dma 连续采集1024个点

为什么我最后得到采样数据计算后发现只有30k的采样率呢?