Re: Programming the EMC2 board
Posted: Fri Aug 19, 2016 1:22 pm
Hi Francois,
Im glad it works fine.
Carl, answering your question about the LEDs on the EMC2 board (what we talked about in Trondheim):
There are four LEDs onboard (LED1,LED2,LED3,LED4), four LEDs on the SEIC extension (LED1 peripheral, electrically related to the 4 onboard*), and two more at the Ethernet peripheral(PHY_LED1,PHY_LED2).
So:
LEDs onboard:
2 of them are accessible from the FPGA, loc U18, U19. The other 2 are NOT accessible directly from the FPGA. Why? I told you there were electrical reasons, which I didnt remember. Looking through the PCB, they seem to be connected to the PEX switch for the PCI express interface. They can be used with a previous configuration of the PEX, allowing the chip to use the GPIO 8 and 9.
*The 2 that are accessible (U18,U19 pins of the FPGA), are related through a transistor to the LEDs at the SEIC extension board, (two top LEDS on LED1 peripheral).
SEIC extension board:
The LEDs with locations AB18, AB19 in the FPGA, are the PHY_LED1, PHY_LED2, you can see them at the Ethernet port.
I hope this clarifies better which LEDs you can use, and how.
Regards,
Timoteo
Im glad it works fine.
Carl, answering your question about the LEDs on the EMC2 board (what we talked about in Trondheim):
There are four LEDs onboard (LED1,LED2,LED3,LED4), four LEDs on the SEIC extension (LED1 peripheral, electrically related to the 4 onboard*), and two more at the Ethernet peripheral(PHY_LED1,PHY_LED2).
So:
LEDs onboard:
2 of them are accessible from the FPGA, loc U18, U19. The other 2 are NOT accessible directly from the FPGA. Why? I told you there were electrical reasons, which I didnt remember. Looking through the PCB, they seem to be connected to the PEX switch for the PCI express interface. They can be used with a previous configuration of the PEX, allowing the chip to use the GPIO 8 and 9.
*The 2 that are accessible (U18,U19 pins of the FPGA), are related through a transistor to the LEDs at the SEIC extension board, (two top LEDS on LED1 peripheral).
SEIC extension board:
The LEDs with locations AB18, AB19 in the FPGA, are the PHY_LED1, PHY_LED2, you can see them at the Ethernet port.
I hope this clarifies better which LEDs you can use, and how.
Regards,
Timoteo