Forum Discussion
New ContributorFitter doesn't assign HPS DDR3 pins
First thing is that you had look into the wrong table, you should look into the table 11 U670 device, which only have 145 IO
second is that you have HPS inout pin that is not connected to the module, Quartus will not able to identify those pin are HPS thus it will assume it as the GPIO. This will cause it have more GPIO pin.
// inout HPS_I2C0_SCLK,
// inout HPS_I2C0_SDAT,
// inout HPS_I2C1_SCLK,
// inout HPS_I2C1_SDAT,
// inout HPS_KEY,
// inout HPS_LED,
// inout HPS_LTC_GPIO,
// output HPS_SD_CLK,
// inout HPS_SD_CMD,
// inout [3:0] HPS_SD_DATA,
// output HPS_SPIM_CLK,
// input HPS_SPIM_MISO,
// output HPS_SPIM_MOSI,
// inout HPS_SPIM_SS,
Super ContributorCan you put the question more clear? Those GPIO pin I see in your design are floating. How do you intent to use those pin?
New ContributorHere the result of an example project I have :
As you can see the PIN locations where never assigned (I get the critical warning "No exact pin location assignment(s) ...") but the fitter somehow figured that these should be on the HPS GPIO.
If you question me about why I dont simply reuse that projet it is because its only assign HPS DDR GPIO and I want to know how to do so to assign I2C, UART, ... HPS GPIO.
