Apparatus and method for obtaining A/D conversion effective value
An analog-to-digital conversion and RMS technology, applied in the direction of analog-to-digital converters, etc., can solve the problems of reducing the efficiency of analog-to-digital conversion and increasing the calculation flow and calculation amount of chip data processing, so as to reduce the calculation amount and improve the analog-to-digital conversion. Efficiency, effect of simplifying the process of analog-to-digital conversion
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Embodiment 1
[0023] The algorithm flow of Embodiment 1 is briefly described as follows, see FIG. 1 .
[0024] The 8-bit analog-to-digital converter ADC, the 16-bit register AD_TEMP, and the conversion counter AD_COUNTER need to obtain the AD value AD_FINAL. The 16-bit register uses AD_TEMP (it can be two registers connected together, mainly using the lower 8 bits to fill up and carry up) to record the sum of 256 AD values. The conversion counter AD_COUNTER is used to record the conversion times. AD_FINAL is used to store the AD value that the user needs to get.
[0025] Start the AD conversion first, add the AD value to AD_TEMP after the AD conversion once, then add 1 to AD_COUNTER, judge whether AD_COUNTER is equal to 255, if not, continue to add the value; if it is, directly take away the high 8 bits of AD_TEMP, and then Stored in AD_FINAL, this value is the desired result.
[0026] Directly taking the upper 8 bits of AD_TEMP as the result is equivalent to shifting the 16-bit data in ...
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