{
  "version": "1.1",
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    "version": "",
    "description": "",
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    "image": ""
  },
  "design": {
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    "graph": {
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          "data": {
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            "pins": [
              {
                "index": "0",
                "name": "LED0",
                "value": "95"
              }
            ],
            "virtual": false
          },
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          }
        },
        {
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        },
        {
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          "type": "basic.code",
          "data": {
            "code": "localparam IDLE = 0;\nlocalparam START = 1;\n\nreg state = IDLE;\nreg next_state = IDLE;\n\nreg oe;\nreg ena;\nreg trig = 0;\n\n//-- Transitions between states\nalways @(posedge clk)\n  state <= next_state;\n  \nalways @(*) begin\n\n  //-- Default values\n  next_state = state;\n  oe = 0;\n  ena = 0;\n  trig = 0;\n  \n  case (state)\n    IDLE: begin\n      if (button)\n        next_state = START;\n    end\n    \n    START: begin\n      oe = 1;  //-- Config. SDA for output\n      ena = 1; //-- Start the clock\n      trig = 1;\n    end\n    \n  endcase\n  \nend",
            "params": [],
            "ports": {
              "in": [
                {
                  "name": "clk"
                },
                {
                  "name": "button"
                }
              ],
              "out": [
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                },
                {
                  "name": "oe"
                },
                {
                  "name": "trig"
                }
              ]
            }
          },
          "position": {
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            "y": -216
          },
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            "height": 288
          }
        },
        {
          "id": "20d3b39a-a9b6-4a6a-8396-856abddcb69e",
          "type": "basic.input",
          "data": {
            "name": "SDA",
            "pins": [
              {
                "index": "0",
                "name": "DD4",
                "value": "88"
              }
            ],
            "virtual": false,
            "clock": false
          },
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            "y": -184
          }
        },
        {
          "id": "63c8c19a-efe0-480d-a466-610b65c1c02d",
          "type": "9b4eccd4c51ae63a95843afa85f05aefb8d71a44",
          "position": {
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            "height": 96
          }
        },
        {
          "id": "0002b440-f081-44a9-b2b4-804ae603c9d5",
          "type": "basic.output",
          "data": {
            "name": "led",
            "pins": [
              {
                "index": "0",
                "name": "D12",
                "value": "143"
              }
            ],
            "virtual": false
          },
          "position": {
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          }
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        {
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          }
        },
        {
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          "data": {
            "name": "Boton",
            "pins": [
              {
                "index": "0",
                "name": "SW1",
                "value": "10"
              }
            ],
            "virtual": false,
            "clock": false
          },
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            "y": -16
          }
        },
        {
          "id": "f3dd4e30-d0b8-4587-967c-9e72fa8b8c33",
          "type": "basic.output",
          "data": {
            "name": "trig",
            "pins": [
              {
                "index": "0",
                "name": "D11",
                "value": "142"
              }
            ],
            "virtual": false
          },
          "position": {
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            "y": -8
          }
        },
        {
          "id": "99d51906-ebef-4819-83d5-65f0f82b5a31",
          "type": "basic.output",
          "data": {
            "name": "SCL",
            "pins": [
              {
                "index": "0",
                "name": "DD5",
                "value": "87"
              }
            ],
            "virtual": false
          },
          "position": {
            "x": 1464,
            "y": 24
          }
        },
        {
          "id": "b783ae56-dc89-4640-8df7-808d48c9a41d",
          "type": "basic.code",
          "data": {
            "code": "\n//-- Initial value of the register\n//-- I2C frame: start (1bit) + addr (7bits) \n\n// 2. READ REGISTER\n//READ  ultrasonic - R0 -> return 0x05\n//                      ss              WWAA                AAxxxxSS              RRAATTTTTTTTTTTTTT                NACK \n//                      ..A6A5A4A3A2A1A0    R7R6R5R4R3R2R1R0        A6A5A4A3A2A1A0                  I7I6I5I4I3I2I1I0    SS\n//reg [97:0] data   = 98'b00111111000000000011000000000000000011001100111111000000001111111111111111110000000000000000111001;\n//reg [97:0] data2  = 98'b10010101010101010101010101010101010101010110010101010101010101000000000000000101010101010101010011;\n\n// 3. READ REGISTER\n//READ  ultrasonic - R1 -> returns 0x18                    Repeated start\n//                      ss              WWAA                AAxxxxSS              RRAATTTTTTTTTTTTTT                NACK \n//                      ..A6A5A4A3A2A1A0    R7R6R5R4R3R2R1R0        A6A5A4A3A2A1A0                  I7I6I5I4I3I2I1I0    SS\nreg [97:0] data   = 98'b00111111000000000011000000000000001111001100111111000000001111111111111111110000000000000000111001;\nreg [97:0] data2  = 98'b10010101010101010101010101010101010101010110010101010101010101000000000000000101010101010101010011;\n\n\n//-- Shift register\nalways @(posedge clk)\n  data <= {data[96:0], 1'b1};\n  \n//-- Shift register\nalways @(posedge clk)\n  data2 <= {data2[96:0], 1'b1};\n  \n//-- Send the MSB  \nassign ser = data[97];\nassign ser2 = data2[97];\n\n\n\n",
            "params": [],
            "ports": {
              "in": [
                {
                  "name": "clk"
                }
              ],
              "out": [
                {
                  "name": "ser"
                },
                {
                  "name": "ser2"
                }
              ]
            }
          },
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            "y": 96
          },
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            "height": 848
          }
        },
        {
          "id": "4fd32321-063f-4246-bdee-a7ee762aa55c",
          "type": "basic.output",
          "data": {
            "name": "trigg2",
            "pins": [
              {
                "index": "0",
                "name": "D10",
                "value": "141"
              }
            ],
            "virtual": false
          },
          "position": {
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          }
        }
      ],
      "wires": [
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          },
          "target": {
            "block": "245dbd89-9788-4155-9844-4da7ce3d2d37",
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        },
        {
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            "port": "out"
          },
          "target": {
            "block": "6c283eb0-fa75-484c-9dc3-8e7fad8e3c0e",
            "port": "c1e09958-aeb1-4453-af92-da0679a91f1d"
          }
        },
        {
          "source": {
            "block": "245dbd89-9788-4155-9844-4da7ce3d2d37",
            "port": "oe"
          },
          "target": {
            "block": "63c8c19a-efe0-480d-a466-610b65c1c02d",
            "port": "f96a1baf-fc8b-4c25-b132-12552605743f"
          }
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        {
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            "port": "out"
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          "target": {
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            "port": "076fd025-aa42-4f23-ae97-b65aec2298ce"
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        {
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            "block": "b783ae56-dc89-4640-8df7-808d48c9a41d",
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          "target": {
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            "port": "out"
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            }
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        },
        {
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            "port": "trig"
          },
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          }
        },
        {
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            "block": "b783ae56-dc89-4640-8df7-808d48c9a41d",
            "port": "ser2"
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        },
        {
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            "port": "ena"
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          }
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        }
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    "faccf20a16b576e0ba31a48f4c485c57ac98a97e": {
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              "id": "2b2e5d93-e6b6-469e-b347-769b365ca08a",
              "type": "basic.code",
              "data": {
                "code": "//-- Divide the frequency by 30 (12Mhz / 30 = 400Khz)\nlocalparam M = 30;\n\n//-- Calculate the number of bits for the divider\nlocalparam N = $clog2(M);\n\n//-- Registro for the implementation of the Module M counter\nreg [N-1:0] divcounter = 0;\n\n//-- Module M counter\nalways @(posedge clk)\n  if (ena)\n      divcounter <= (divcounter == M - 1) ? 0 : divcounter + 1;\n  else\n     divcounter <= 1'b0;\n\n//-- Comparator. A 200Khz signal si generated\n//-- The two signals are 90 degrees out of phase\nwire s90;\nwire s;\nassign s90 = (divcounter == M - 1) ? 1 : 0;\nassign s = (divcounter == M/2) ? 1 : 0;\n",
                "params": [],
                "ports": {
                  "in": [
                    {
                      "name": "clk"
                    },
                    {
                      "name": "ena"
                    }
                  ],
                  "out": [
                    {
                      "name": "s90"
                    },
                    {
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                    }
                  ]
                }
              },
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              },
              "size": {
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                "height": 592
              }
            },
            {
              "id": "b02bb5e9-3a7d-40c4-8498-a363919deedd",
              "type": "basic.code",
              "data": {
                "code": "\nreg q = 1;\n\nalways @(posedge clk)\n  if (ena) begin\n    if (t)\n      q <= ~q;\n    end\n  else\n    q <= 1;\n ",
                "params": [],
                "ports": {
                  "in": [
                    {
                      "name": "clk"
                    },
                    {
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                    },
                    {
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            {
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              }
            },
            {
              "id": "839fbc76-8009-4291-8014-e8e9d8dbbf46",
              "type": "basic.code",
              "data": {
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                "params": [],
                "ports": {
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              }
            },
            {
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              "type": "basic.output",
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              },
              "position": {
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              }
            }
          ],
          "wires": [
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                "port": "t"
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    "9b4eccd4c51ae63a95843afa85f05aefb8d71a44": {
      "package": {
        "name": "Tri-state",
        "version": "1.0.0",
        "description": "Tri-state logic block",
        "author": "Salvador E. Tropea",
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                "y": 40
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                "y": 128
              }
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                "y": 128
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    "a627f5aacef2457b46054b0e895bd70d62c19a0c": {
      "package": {
        "name": "Botón de cambio",
        "version": "0.1",
        "description": "Bit que cambia con cada click del pulsador de entrada",
        "author": "Juan Gonzalez Gomez (obijuan)",
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      },
      "design": {
        "graph": {
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            {
              "id": "a663544c-3e89-413a-9b21-bffd24395d8d",
              "type": "basic.code",
              "data": {
                "code": "//-- Debouncer Circuit\n//-- It produces a stable output when the\n//-- input signal is bouncing\n\nreg btn_prev = 0;\nreg btn_out_r = 0;\n\nreg [16:0] counter = 0;\n\n\nalways @(posedge clk) begin\n\n  //-- If btn_prev and btn_in are differents\n  if (btn_prev ^ in == 1'b1) begin\n    \n      //-- Reset the counter\n      counter <= 0;\n      \n      //-- Capture the button status\n      btn_prev <= in;\n  end\n    \n  //-- If no timeout, increase the counter\n  else if (counter[16] == 1'b0)\n      counter <= counter + 1;\n      \n  else\n    //-- Set the output to the stable value\n    btn_out_r <= btn_prev;\n\nend\n\nreg T = 0;\n\nalways @(posedge btn_out_r)\n  T <= ~T;\n\n\nassign out = T;\n\n\n\n",
                "params": [],
                "ports": {
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                    {
                      "name": "clk"
                    },
                    {
                      "name": "in"
                    }
                  ],
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                    }
                  ]
                }
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              "position": {
                "x": 320,
                "y": 128
              },
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              }
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                "clock": true
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}