MSP430F6736A: MSP430F6736A 24位ADC的数据处理问题

Hi,
Sorry for late reply. I think your question is:
"we have selected MSP430F6976A for your system MCU for main controller. It is because there is a built-in sigma-delta ADC-24bit. When using SD-24 mode, ADC result data is saved in 2 16bit words. How to integrate them into valid 24bit data? "

The answer is to define the ADC result variable to "unsigned long" data type, and move the ADC conversion data to the variable with twice operation. Please refer to the example code msp430f673xA_sd24b_06.c in the MSP430F6976A code example ZIP file (www.ti.com/.../slac693).

unsigned long results;
......
results = SD24BMEMH2; // Save CH2 results (clears IFG)
results = (results << 16) | SD24BMEML2; // Concatenate lower and upper words

Default ADC data format is Right-aligned, and offset binary. If you would like the data format to Left-aligned and Twos complement, please check the register setting of SD24ALGN and SD24DFx in the user guide.

Thanks,
Lixin

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