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Found 1 result

  1. NiLo

    Nexys 3 Pmod Nav Problem

    Hi, I am doing a project on Nexys 3 FPGA board and I am trying to connect Pmod Nav in order to display barometric pressure on PmodOLEDrgb. I am in trouble with Pmod Nav. I have created a Controller that reads via SPI Protocol the 24 bits of 3 data registers and then I have divided this result with value 4097 counts/hPa as it is mentioned in LPS25HB, in order to take the absolute pressure in hPa. The final value should be in range of 260- 1260 hPa. The problem is that the final absolute value of barometric pressure, that I take, is 4095, which means that all bits are stored in 3 registers PRESS_OUT_H, PRESS_OUT_L and PRESS_OUT_XL take the value of '1'. The pins that I have connected are SDI, SDO, SPC, CS_ALT. I have no idea on how to deal with this problem. I would appreciate if someone helped me. Thank you Nik