Kirk- How are you simulating the input in the office?
Javid ----- Original Message ----- From: "Kirk Wallace" <[EMAIL PROTECTED]> To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net> Sent: Monday, January 21, 2008 9:29 PM Subject: [Emc-users] Serial ADC Shifting >I have the a serial ADC setup and mostly working, but I have a problem > with the output value being too high. I shift bit 11 through 0 into a > byte as shown below. > > Full file here: > http://www.wallacecompany.com/machine_shop/EMC2/serial_adc/LTC1286.comp > > ... > case 1: // *** Mode 1 : Shift Data from ADC > clock_out=0x1 & adc_step; // Set clock_out high on odd adc_step's > if (clock_out) { // If clock_out is high ... > bit_shifted=(bit_in << which_bit); > accum=accum+bit_shifted; // get input bit, shift to current bit > location, and add to accumulator > which_bit--; > } > ... > > On the shop PC the output comes out seven shifts too high. My office PC > works properly. They both have the same software and EMC 2.2.2 and get > undated automatically. I have a screen-shot showing the value of each > shift on the bottom trace here: > > http://www.wallacecompany.com/machine_shop/EMC2/serial_adc/bad_shift-1a.png > > The first peak should have a value of 2048, but 262144 is indicated. > Just before this shot, I looked at a trace of the shift values, and > they were correct at 11 decrementing to 0. > > Both PC's are the same except, the office PC has a simulated input, and > the > shop PC has the real ADC input. > > Anyone have any ideas how an unsigned integer can be seven bits off? > > > ------------------------------------------------------------------------- > This SF.net email is sponsored by: Microsoft > Defy all challenges. Microsoft(R) Visual Studio 2008. > http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
