Jump to content

SuryaPrakash

Members
  • Posts

    4
  • Joined

  • Last visited

Everything posted by SuryaPrakash

  1. I am trying to read from MIO 50 button of Zybo Z7-20 in linux , I have changed the voltage from 1.8V to 3.3V in VIVADO and used the .XSA file and generated linux image in petalinux and I have used the following code to read from MIO 50. Even if I don't press the MIO 50 button , I am still getting result as button pressed. int fd; //file handler. struct gpiohandle_request button; struct gpiohandle_data data; /*Open the gpiochip0 file which is mapped to the gpio physical layer*/ fd = open("/dev/gpiochip0", O_RDWR); //opening the file in read-write mode. if(fd < 0) { perror("File not present\n"); return -1; } /*Set button (MIO-50) as input*/ button.flags = GPIOHANDLE_REQUEST_INPUT; strcpy(button.consumer_label , "BUTTON"); memset(button.default_values , 0 , sizeof(button.default_values)); button.lines = 1; button.lineoffsets[0] = PS_SWITCH; /*Make request to make MIO50 as input*/ if(ioctl(fd , GPIO_GET_LINEHANDLE_IOCTL,&button) < 0) { perror("GPIO input request failed\n"); close(fd); close(led.fd); return -1; } //Intialize the data.values array to 0. memset(data.values , 0 , sizeof(data.values)); if(ioctl(button.fd , GPIOHANDLE_GET_LINE_VALUES_IOCTL , &data) < 0) { perror("Getting value from GPIO input pin failed\n"); close(fd); close(led.fd); close(button.fd); return -1; } if(data.values[0] == 1) { printf("\nBUTTON PRESS DETECTED\n"); } else { printf("\nBUTTON PRESS NOT DETECTED\n"); } close(fd); close(button.fd); return 0;
  2. Hi all, I am learning embedded linux with Zybo Z7-20 board, I am using petalinux 2022.1 version to create my customized image, I tried the prebuilt version linux image offered by digilent , the board boots up with no issues. Since that bsp is made from 2017.4 version of petalinux , I can't use that bsp in my current petalinux version. So I tried to create project based on zynq template in petalinux and tried to boot it and the booting is not happening. Can you please suggest any ways on how I can get this boot working, do I need to add device-tree code to the system_user.dtsi file?
  3. Hi I am planning to use QNX in Zybo Z7-20 board , where can I find the required BSP packages.
  4. Hi, I bought Digilent Zybo Z7-20 FPGA board , Since it is an EVM , I am hoping that I could get the Hardware description file (.XSA) for the Zybo Z7-20 FPGA board. I thought of using the Hardware description file in Vitis and create a hardware platform and develop my application code on top of that. Please tell if there is any hardware description file available for Zybo Z7-20 FPGA board , for latest Vitis software version 2022.1.1 or if Hardware description file is available for any other version also , please tell me that.
×
×
  • Create New...