ADC noise cancel out subrotiue in C for ARM (LPC17
2016-08-23
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LPC 1768 has got an internal ADC. Depending on pcb design its output contains
noise. By a few polling ADC read sequence it discovered that noisy output dose
not repeat after the other noisy output, based on this idea instead of one read
action, 3 times repeatedly reading action will be done, then one of samples (the
most out of average one) will eliminated. Then the average of rest is subroutine's
return value
noise. By a few polling ADC read sequence it discovered that noisy output dose
not repeat after the other noisy output, based on this idea instead of one read
action, 3 times repeatedly reading action will be done, then one of samples (the
most out of average one) will eliminated. Then the average of rest is subroutine's
return value
c
ADC
消除
噪音
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