[Trying to expand the number of GPIO ports on the Zybo Z720, the method which I am currently using is assigning PMOD port JE as the IO ports by changing the constraint files in vivado, however not successful in initializing and reading/writing those pins.]

I followed this forum and changed the constraint files of the Zybo Z720 in Vivado and successfully generate bitstream and the xsa file to import into Vitis. https://forum.digilentinc.com/topic/8943-pmod-as-input-and-output-gpio/

#Pmod Header JE                                                          

set_property -dict { PACKAGE_PIN V12  IOSTANDARD LVCMOS33 } [get_ports { je_pin1_io }];  

set_property -dict { PACKAGE_PIN W16  IOSTANDARD LVCMOS33 } [get_ports { je_pin2_io }];           

set_property -dict { PACKAGE_PIN J15  IOSTANDARD LVCMOS33 } [get_ports { je_pin3_io }];            

set_property -dict { PACKAGE_PIN H15  IOSTANDARD LVCMOS33 } [get_ports { je_pin4_io }];          

set_property -dict { PACKAGE_PIN V13  IOSTANDARD LVCMOS33 } [get_ports { je_pin7_io }];      

set_property -dict { PACKAGE_PIN U17  IOSTANDARD LVCMOS33 } [get_ports { je_pin8_io }];       

set_property -dict { PACKAGE_PIN T17  IOSTANDARD LVCMOS33 } [get_ports { je_pin9_io }];         

set_property -dict { PACKAGE_PIN Y17  IOSTANDARD LVCMOS33 } [get_ports { je_pin10_io }];   

I am able to control the GPIO pins of port JF on the Zybo Z720 using the following code, how do I edit this so that I am able to turn on/off LEDs using the Pmod port JE instead.

#include "xil_cache.h"

#include "xparameters.h"

#include "stdio.h"

#include "xparameters.h"

#include "xuartps.h"

#include "xtime_l.h"

#include "xgpiops.h"

#include "sleep.h"

#include "xil_io.h"

#include "xil_types.h"

#include "xil_printf.h"

#include "sleep.h"

#include "stdlib.h"

#include "string.h"

 

#define HOST_UART_DEVICE_ID XPAR_PS7_UART_1_DEVICE_ID

#define HostUart XUartPs

#define HostUart_Config XUartPs_Config

#define HostUart_CfgInitialize XUartPs_CfgInitialize

#define HostUart_LookupConfig XUartPs_LookupConfig

#define HostUart_Recv XUartPs_Recv

#define HostUartConfig_GetBaseAddr(CfgPtr) (CfgPtr->BaseAddress)

#define PMODESP32_UART_BASEADDR XPAR_PMODESP32_0_AXI_LITE_UART_BASEADDR

#define PMODESP32_GPIO_BASEADDR XPAR_PMODESP32_0_AXI_LITE_GPIO_BASEADDR

#define COUNTS_PER_SECOND (XPAR_CPU_CORTEXA9_CORE_CLOCK_FREQ_HZ /2)

#define TIMER_FREQ_HZ 100000000

#define MAX_WIDTH 320

#define MAX_HEIGHT 240

#define MAX_BUTTON 16

 

#ifdef __MICROBLAZE__

#define HOST_UART_DEVICE_ID XPAR_AXI_UARTLITE_0_BASEADDR

#define HostUart XUartLite

#define HostUart_Config XUartLite_Config

#define HostUart_CfgInitialize XUartLite_CfgInitialize

#define HostUart_LookupConfig XUartLite_LookupConfig

#define HostUart_Recv XUartLite_Recv

#define HostUartConfig_GetBaseAddr(CfgPtr) (CfgPtr->RegBaseAddr)

#include "xuartlite.h"

#include "xil_cache.h"

#else

#define HOST_UART_DEVICE_ID XPAR_PS7_UART_1_DEVICE_ID

#define HostUart XUartPs

#define HostUart_Config XUartPs_Config

#define HostUart_CfgInitialize XUartPs_CfgInitialize

#define HostUart_LookupConfig XUartPs_LookupConfig

#define HostUart_Recv XUartPs_Recv

#define HostUartConfig_GetBaseAddr(CfgPtr) (CfgPtr->BaseAddress)

#include "xuartps.h"

#endif

 

#define PMODESP32_UART_BASEADDR XPAR_PMODESP32_0_AXI_LITE_UART_BASEADDR

#define PMODESP32_GPIO_BASEADDR XPAR_PMODESP32_0_AXI_LITE_GPIO_BASEADDR

#define BLOCK_SIZE 40

 

void startup();

 

XGpioPs_Config *ConfigPtr;

XGpioPs output;

 

int main() {

  startup();

  while(1)

  {

  XGpioPs_WritePin(&output, 13, 1); //led on (pin 1,2,3,4)

  XGpioPs_WritePin(&output, 10, 1);

  XGpioPs_WritePin(&output, 11, 1);

  XGpioPs_WritePin(&output, 12, 1);

}

 

  void startup(){ //initialize pins for JF

 

  ConfigPtr = XGpioPs_LookupConfig(XPAR_PS7_GPIO_0_DEVICE_ID);

  XGpioPs_CfgInitialize(&output, ConfigPtr, ConfigPtr->BaseAddr);

 

  XGpioPs_SetDirectionPin(&output, 13, 1);

  XGpioPs_SetOutputEnablePin(&output, 13,1); //pin1 JF1

 

  XGpioPs_SetDirectionPin(&output, 10, 1);

  XGpioPs_SetOutputEnablePin(&output, 10,1); //pin2 JF2

 

  XGpioPs_SetDirectionPin(&output, 11, 1);

  XGpioPs_SetOutputEnablePin(&output, 11,1); //pin3 JF3

 

  XGpioPs_SetDirectionPin(&output, 12, 1);

  XGpioPs_SetOutputEnablePin(&output, 12,1); //pin4 JF4

}

[Reading multiple data from different fields from thingspeak(8 fields) using the ESP32 for IOT control. (ZYBO-Z7)]

Hi, I am currently working on IOT control using ZYBO-Z7 FPGA with the Pmod ESP32, my goal is to read multiple data across 8 fields simultaneously, my current method is reading data from individual fields manually using the code given from this user from a digilent forum (https://forum.digilentinc.com/topic/21634-retrieve-data-from-thingspeak-through-using-pmod-esp32/), this method makes the control for IOT very slow as I have to individually wait for 8 fields of data one by one. My current solution I am testing out is to read json data using the C++ code below, however the json file is a placed in constant and can only read from that specific array and does not update real time data from thingspeak, how do I get my ZYBO-Z7 to process multiple data from a single feed with 8 fields all from one json URL? Much needed help please and thanks.

Sorry if I am not clear i can clarify more if need be.

Current code which reads data from fields 1 by 1 

backup2 19112021.txt 

Testing code using json format

jsontest.txt

[Why is the Pmod HYGRO only able to read from the top pins of the ZYBO Z720?]

Thanks for the response thinkthinkthink, I found another method yesterday which was fairly simple and gave it a quick test and ended up working.

Link to the similar procedures

[Why is the Pmod HYGRO only able to read from the top pins of the ZYBO Z720?]

Hi @thinkthinkthink sorry for the late reply, this is my current block diagram. Do you mind further explaining  about using the two AXI IIC IPs to be able to use both top and bottom rows of the Pmod port. Would I then be able to use Pmod HYGRO on the top Pmod port and Pmod AQS on the bottom Pmod port? (trying to free up one extra port for another AD1)

[Why is the Pmod HYGRO only able to read from the top pins of the ZYBO Z720?]

I am coding C++ in Vitis 2019.2 on the Zybo Z720 and I am only able to get temperature readings from pin 1-6 of the Pmod port. Currently trying to get the Pmod HYGRO to be able to read from both top 6 pins and bottom 6 pins, how do I do that? Attached are the code used and readings which I got from the top 6 pins and bottom 6 pins respectively. 

This is my Vitis code

Readings from top 6 pins of the Pmod port (accurate reading)

Readings from bottom 6 pins of the Pmod port (error reading)