Hello all,
I am in the process of guide, which I downloaded from this site and came across a simple problem which i'm not able to fix. I did a processing system with quad spi and gpio in the PL. I was able to properly configure the GPIO but as I try to read the values of the keys but XGpio_DiscreteRead(&my_Gpio,1) is always getting 0xEA00003D value, regardless of the buttons state. GPIO is connected to the leds and buttons on ZedBoard. Can anybody help work this out? Thank you in advance.
C code:
#include <stdio.h>
#include "platform.h"
#include "xgpio.h"
#include "xparameters.h"
int main()
{
tXGpio_Config *GPIO_Config;
tXGpio my_Gpio;
tint status = 0;
tunsigned int DIP_value = 0;
tunsigned int LED_value = 0;
init_platform();
GPIO_Config = XGpio_LookupConfig(XPAR_GPIO_0_DEVICE_ID);
status = XGpio_CfgInitialize(&my_Gpio, GPIO_Config, GPIO_Config->DeviceId);
status = XGpio_SelfTest(&my_Gpio);
if(status==0)
tprintf("Status GPIO ok
r");
else {
tprintf("Status GPIO nok
t");
twhile(1);
}
XGpio_SetDataDirection(&my_Gpio, 1, 0x000000FF);
while(1) {
tDIP_value = XGpio_DiscreteRead(&my_Gpio,1);
tLED_value = DIP_value << 8;
tprintf("DIP = 0x%04X, LED = 0x%04X
r", DIP_value, LED_value);
}
cleanup_platform();
return 0;
}
and this is my constrains.
set_property PACKAGE_PIN AA11 [get_ports spi_rtl_io0_io]
set_property PACKAGE_PIN Y10 [get_ports spi_rtl_io1_io]
set_property PACKAGE_PIN AA9 [get_ports spi_rtl_sck_io]
set_property PACKAGE_PIN Y11 [get_ports {spi_rtl_ss_io[0]}]
set_property PACKAGE_PIN F22 [get_ports {gpio_rtl_tri_io[0]}]
set_property PACKAGE_PIN G22 [get_ports {gpio_rtl_tri_io[1]}]
set_property PACKAGE_PIN H22 [get_ports {gpio_rtl_tri_io[2]}]
set_property PACKAGE_PIN F21 [get_ports {gpio_rtl_tri_io[3]}]
set_property PACKAGE_PIN H19 [get_ports {gpio_rtl_tri_io[4]}]
set_property PACKAGE_PIN H18 [get_ports {gpio_rtl_tri_io[5]}]
set_property PACKAGE_PIN H17 [get_ports {gpio_rtl_tri_io[6]}]
set_property PACKAGE_PIN M15 [get_ports {gpio_rtl_tri_io[7]}]
set_property PACKAGE_PIN T22 [get_ports {gpio_rtl_tri_io[8]}]
set_property PACKAGE_PIN T21 [get_ports {gpio_rtl_tri_io[9]}]
set_property PACKAGE_PIN U22 [get_ports {gpio_rtl_tri_io[10]}]
set_property PACKAGE_PIN U21 [get_ports {gpio_rtl_tri_io[11]}]
set_property PACKAGE_PIN V22 [get_ports {gpio_rtl_tri_io[12]}]
set_property PACKAGE_PIN W22 [get_ports {gpio_rtl_tri_io[13]}]
set_property PACKAGE_PIN U19 [get_ports {gpio_rtl_tri_io[14]}]
set_property PACKAGE_PIN U14 [get_ports {gpio_rtl_tri_io[15]}]
set_property IOSTANDARD LVCMOS25 [get_ports {spi_rtl_*}]
set_property IOSTANDARD LVCMOS25 [get_ports {gpio_rtl_tri_io[*]}]
set_property PULLDOWN true [get_ports {spi_rtl_*}]
set_property PULLDOWN true [get_ports {gpio_rtl_tri_io[*]}]
