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MSP430FR5994: MSP_LEA_VALID_ADDRESS失败

Part Number: MSP430FR5994

我们一套设备包含3片MSP430做数据采集(这3片分别叫ABC),都使用到了LEA做FFT运算。

在对现场设备陆续升级过程中,发现有一套设备,其中A计算的基波有效值是正确的,B和C计算的基波有效值在随机跳动。

	fftParams.length = HIGH_SAMPLES;
	fftParams.bitReverse = 1;
	fftParams.twiddleTable = msp_cmplx_twiddle_table_256_q15;	
	MAP_msp_fft_auto_q15(&fftParams, (_q15*)gIplSamples2 , &leaIplShift);

上面是我们使用的LEA函数,我们远程定位到,B和C在运行到MSP LEA VALID ADDRESS的时候提前返回了。

我们继续跟踪MSP_LEA_BOTTOM、MSP_LEA_TOP和每次做FFT计算的数组gIplSamples2的地址,结果如下:

三片MSP430中数组gIplSamples2地址都为0x3400,是正确定位到LEA地址中的;

但是B和C读出来的LEAMB和LEAMT值就不对了。

我们固件已经在现场经上万片MSP430长时间运行验证过了,软件用法应该没有什么问题。

但是在这套设备里面同时出现2片都有问题,是芯片本身的问题吗?

  • Hi inhand,

    Here is an worlwide forum, please use English to communicate. Or you can also file a thread in https://e2echina.ti.com/ 

    但是在这套设备里面同时出现2片都有问题,是芯片本身的问题吗?

    It is hard to say. If there are only two chips error, it is more likely that there is a problem with the chip.

    I suggest you check the power voltage and current consumption of the device and whether it is abnormal. Meanwhile, you can also replace a new chip in the board to check whether it works normal.

    B.R.

    Sal

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