Dec 3, 2009 #1 F firmwaregirl Newbie level 1 Joined Dec 3, 2009 Messages 1 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Activity points 1,288 Using the ADE7753 Eval board: I am reading the WAVEFORM reg on the WSMP interrupt. I have CH1N/CH1P and CH2N/CH2P tied to AGND, verified with a voltmeter to both be 0V inputs into the ADC. On interrupt, with the CH1 setting I read ~0xff2928 (-55000) and with CH2 setting I read a more reasonable ~0xffff9c (-100). Both of these readings are too big to offset with the CH1OS/CH2OS of +/-31, and the CH1 reading seems completely out of whack. Any ideas?
Using the ADE7753 Eval board: I am reading the WAVEFORM reg on the WSMP interrupt. I have CH1N/CH1P and CH2N/CH2P tied to AGND, verified with a voltmeter to both be 0V inputs into the ADC. On interrupt, with the CH1 setting I read ~0xff2928 (-55000) and with CH2 setting I read a more reasonable ~0xffff9c (-100). Both of these readings are too big to offset with the CH1OS/CH2OS of +/-31, and the CH1 reading seems completely out of whack. Any ideas?
Dec 5, 2009 #2 bobcat1 Advanced Member level 4 Joined Jul 10, 2002 Messages 1,284 Helped 99 Reputation 198 Reaction score 34 Trophy points 1,328 Activity points 8,546 Hi Check whether the Clock is OK (3.58MHz) Check whether the REF voltage is set to internal and it is stable All the best BObi The microcontroller specialist
Hi Check whether the Clock is OK (3.58MHz) Check whether the REF voltage is set to internal and it is stable All the best BObi The microcontroller specialist