ramelectronics

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  1. LogicStart MegaWing v1.2 - U1 IC is hotting

    Thank you Jack. I will do it so.
  2. LogicStart MegaWing v1.2 - U1 IC is hotting

    Hi Jack, finally I've received today a new Papilio One 500K board, but my surprise when I plugged it to the LogicStart MegaWing v1.2. With the default program it started flashing all the LEDs but the U1 IC is still hotting. I guess the problem is on the LogicStart, right?. Any ideas where the problem could be?.
  3. LogicStart MegaWing v1.2 - U1 IC is hotting

    Thank you very much for your info Hamster, but I still don't know how you get the relationship between the pins and the LEDs. The pin assignment I have goes only from P2 to P98. There is neither P123 nor P134. The UCF file I use has the following pin assignment: # Main board wing pin [] to FPGA pin Pxx map# -------C------- -------B------- -------A-------# [GND] [C00] P91 [GND] [B00] P85 P86 [A15]# [2V5] [C01] P92 [2V5] [B01] P83 P84 [A14]# [3V3] [C02] P94 [3V3] [B02] P78 P79 [A13]# [5V0] [C03] P95 [5V0] [B03] P71 P70 [A12]# [C04] P98 [B04] P68 P67 [A11] [5V0]# [C05] P2 [B05] P66 P65 [A10] [3V3]# [C06] P3 [B06] P63 P62 [A09] [2V5]# [C07] P4 [B07] P61 P60 [A08] [GND]# [GND] [C08] P5 [GND] [B08] P58 P57 [A07]# [2V5] [C09] P9 [2V5] [B09] P54 P53 [A06]# [3V3] [C10] P10 [3V3] [B10] P41 P40 [A05]# [5V0] [C11] P11 [5V0] [B11] P36 P35 [A04]# [C12] P12 [B12] P34 P33 [A03] [5V0]# [C13] P15 [B13] P32 P26 [A02] [3V3]# [C14] P16 [B14] P25 P23 [A01] [2V5]# [C15] P17 [B15] P22 P18 [A00] [GND]
  4. LogicStart MegaWing v1.2 - U1 IC is hotting

    It is a pity, but don't worry at all. Yesterday Mike Field suggested me to plug the lower 'Wing C' connector into the 'Wing B' socket and modify accordingly the constraints.ucf file: # Constraints for Papilio OneNET switch_1 LOC = "P63" | IOSTANDARD=LVTTL;NET switch_0 LOC = "P61" | IOSTANDARD=LVTTL;NET LED_1 LOC = "P25" | IOSTANDARD=LVTTL;NET LED_0 LOC = "P22" | IOSTANDARD=LVTTL; Surprisingly now the "switches_led" program is working, but unfortunately the U1 IC is still hotting. Regards,Ruben
  5. Hi, I'm newbie with FPGAs so I found the Mike Field's book and I bought both a Papilio One 500K and a LogicStart MegaWind board as suggested. The first time I plugged the LogicStart MegaWing on the Papilio One, it lighted up all the LEDs on it. Then I followed the book and after some issues I could finally generate a .bit file as described in "Your First Design" chapter. I tried to load it using the Papilio Loader but unexpectedly the program didn't work (the switches didn't light up any LED). But the real problem now is that the board began to smell burned. I tried to check it and I realized the ADC U1 IC was hotting!! Although I erased the FPGA with the Papilio Loader, the IC continues becoming very hot in a few seconds. I tried to check if there was any shortcircuit between the ADC port pins, but everything seems to be correct. I don't know what else can I check. My Papilio One jumper's settings are USB and 3.3V. Any help will be appreciated!