GUI Maker for Avalon Bus - FPGA SPI Bridge Panel

आप एनआईओएस द्वितीय बिना इंटेल FPGA के एवलॉन बस संचालित करने के लिए एक जीयूआई बना सकते हैं।

What is the purpose of this application?

You can create a GUI to operate Intel (formerly Altera) FPGA's Avalon bus in a short time. You can operate FPGA from Android without Nios II CPU.

You can place buttons, timers, graphs, etc., and describe the processing in Python.

Likewise, you can write a simple game by describing the placement and processing of 3D objects in Python.

What program should be written to ESP8266 / ESP32?

Arduino sketch　http://rapidnack.com/?p=835

Operation explanation - Display　http://rapidnack.com/?p=918

SPI Bridge Scope　http://rapidnack.com/?p=1831

Please write the above Arduino sketch to ESP.

You can use the following methods to access the Avalon bus in the FPGA.

byte[] WriteBytePacket(UInt32 addr, byte data, int timeoutInSec = 3)

byte[] WriteUInt16Packet(UInt32 addr, UInt16 data, int timeoutInSec = 3)

byte[] WriteUInt32Packet(UInt32 addr, UInt32 data, int timeoutInSec = 3)

byte[] WriteBytePacket(UInt32 addr, byte[] dataBytes, bool isIncremental = false, int timeoutInSec = 3)

byte[] WriteUInt16Packet(UInt32 addr, UInt16[] dataArray, bool isIncremental = false, int timeoutInSec = 3)

byte[] WriteUInt32Packet(UInt32 addr, UInt32[] dataArray, bool isIncremental = false, int timeoutInSec = 3)

byte ReadBytePacket(UInt32 addr, int timeoutInSec = 3)

UInt16 ReadUInt16Packet(UInt32 addr, int timeoutInSec = 3)

UInt32 ReadUInt32Packet(UInt32 addr, int timeoutInSec = 3)

byte[] ReadBytePacket(UInt16 size, UInt32 addr, bool isIncremental = false, int timeoutInSec = 3)

UInt16[] ReadUInt16Packet(UInt16 size, UInt32 addr, bool isIncremental = false, int timeoutInSec = 3)

UInt32[] ReadUInt32Packet(UInt16 size, UInt32 addr, bool isIncremental = false, int timeoutInSec = 3)

The following is a sketch for ESP32.

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#include <SPI.h>

#include <WiFi.h>

const char* ssid     = "your-ssid";

const char* password = "your-password";

WiFiServer server(2002);

WiFiClient client;

#define SPI_BUF_LEN 1024

byte spiBuf[SPI_BUF_LEN];

byte spiReadBuf[SPI_BUF_LEN];

void setup() {

  Serial.begin(57600);

  SPI.begin();

  SPI.setFrequency(24000000);

  SPI.setDataMode(SPI_MODE1);

  SPI.setBitOrder(MSBFIRST);

  pinMode(SS, OUTPUT);

  digitalWrite(SS, HIGH);

  Serial.println();

  Serial.print("Connecting to ");

  Serial.println(ssid);

  //WiFi.mode(WIFI_STA);  // Disable Access Point

  WiFi.begin(ssid, password);

  while (WiFi.status() != WL_CONNECTED) {

    delay(500);

    Serial.print(".");

  }

  Serial.println("");

  Serial.println("WiFi connected"); 

  Serial.println("IP address: ");

  Serial.println(WiFi.localIP());

  server.begin();

  Serial.println("Server started");

}

void loop() {

  if (!client.connected()) {

    // try to connect to a new client

    client = server.available();

  } else {

    // read data from the connected client

    int n = client.available();

    if (n > 0) {

      //Serial.print("available: ");

      //Serial.println(n);

      if (n > SPI_BUF_LEN) {

        n = SPI_BUF_LEN;

      }

      // transfer data to/from SPI

      client.readBytes(spiBuf, n);

      digitalWrite(SS, LOW);

      SPI.transferBytes(spiBuf, spiReadBuf, n);

      digitalWrite(SS, HIGH);

      // return data to client

      client.write(spiReadBuf, n);

    }

  }

}

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