Created
November 12, 2022 03:42
-
-
Save jrwagz/a2722055eea4211acd902e7548ee3905 to your computer and use it in GitHub Desktop.
Icestudio example of using Lattice ICE40 internal oscillator as a reference clock working on UPduino v3.1
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| { | |
| "version": "1.2", | |
| "package": { | |
| "name": "", | |
| "version": "", | |
| "description": "", | |
| "author": "", | |
| "image": "" | |
| }, | |
| "design": { | |
| "board": "upduino31", | |
| "graph": { | |
| "blocks": [ | |
| { | |
| "id": "bba5bacd-2bbe-48a6-afda-3639d94f801a", | |
| "type": "basic.output", | |
| "data": { | |
| "name": "LED", | |
| "pins": [ | |
| { | |
| "index": "0", | |
| "name": "led_blue", | |
| "value": "40" | |
| } | |
| ], | |
| "virtual": false | |
| }, | |
| "position": { | |
| "x": 360, | |
| "y": -64 | |
| } | |
| }, | |
| { | |
| "id": "5701b50c-904b-4776-ab4c-addc641b71ff", | |
| "type": "basic.output", | |
| "data": { | |
| "name": "LED", | |
| "pins": [ | |
| { | |
| "index": "0", | |
| "name": "led_red", | |
| "value": "41" | |
| } | |
| ], | |
| "virtual": false | |
| }, | |
| "position": { | |
| "x": 360, | |
| "y": 16 | |
| } | |
| }, | |
| { | |
| "id": "279c2e74-69b0-489f-af8a-1a3b26a8d20e", | |
| "type": "32200dc0915d45d6ec035bcec61c8472f0cc7b88", | |
| "position": { | |
| "x": 208, | |
| "y": 16 | |
| }, | |
| "size": { | |
| "width": 96, | |
| "height": 64 | |
| } | |
| }, | |
| { | |
| "id": "c4334cde-6d7f-4932-bd44-7978a59c0b75", | |
| "type": "basic.info", | |
| "data": { | |
| "info": "LEDs blue and red are blinking alternatively", | |
| "readonly": false | |
| }, | |
| "position": { | |
| "x": -176, | |
| "y": -120 | |
| }, | |
| "size": { | |
| "width": 416, | |
| "height": 32 | |
| } | |
| }, | |
| { | |
| "id": "9f445916-9f64-46fe-921d-06ef2a3a4fff", | |
| "type": "basic.code", | |
| "data": { | |
| "ports": { | |
| "in": [], | |
| "out": [ | |
| { | |
| "name": "clk" | |
| } | |
| ] | |
| }, | |
| "params": [], | |
| "code": "wire clk_pre;\nSB_HFOSC inthosc(.CLKHFPU(1'b1), .CLKHFEN(1'b1), .CLKHF(clk_pre));\n\nparameter N = 27;\n\n//-- divisor register\nreg [N-1:0] divcounter;\n\n//-- N bit counter\nalways @(posedge clk_pre)\n divcounter <= divcounter + 1;\n\n//-- Use the most significant bit as output\nassign clk = divcounter[N-1];" | |
| }, | |
| "position": { | |
| "x": -416, | |
| "y": -384 | |
| }, | |
| "size": { | |
| "width": 760, | |
| "height": 216 | |
| } | |
| } | |
| ], | |
| "wires": [ | |
| { | |
| "source": { | |
| "block": "279c2e74-69b0-489f-af8a-1a3b26a8d20e", | |
| "port": "664caf9e-5f40-4df4-800a-b626af702e62" | |
| }, | |
| "target": { | |
| "block": "5701b50c-904b-4776-ab4c-addc641b71ff", | |
| "port": "in" | |
| } | |
| }, | |
| { | |
| "source": { | |
| "block": "9f445916-9f64-46fe-921d-06ef2a3a4fff", | |
| "port": "clk" | |
| }, | |
| "target": { | |
| "block": "bba5bacd-2bbe-48a6-afda-3639d94f801a", | |
| "port": "in" | |
| } | |
| }, | |
| { | |
| "source": { | |
| "block": "9f445916-9f64-46fe-921d-06ef2a3a4fff", | |
| "port": "clk" | |
| }, | |
| "target": { | |
| "block": "279c2e74-69b0-489f-af8a-1a3b26a8d20e", | |
| "port": "18c2ebc7-5152-439c-9b3f-851c59bac834" | |
| } | |
| } | |
| ] | |
| } | |
| }, | |
| "dependencies": { | |
| "32200dc0915d45d6ec035bcec61c8472f0cc7b88": { | |
| "package": { | |
| "name": "NOT", | |
| "version": "1.0.0", | |
| "description": "NOT logic gate", | |
| "author": "Jesús Arroyo", | |
| "image": "%3Csvg%20xmlns=%22http://www.w3.org/2000/svg%22%20width=%2291.33%22%20height=%2245.752%22%20version=%221%22%3E%3Cpath%20d=%22M0%2020.446h27v2H0zM70.322%2020.447h15.3v2h-15.3z%22/%3E%3Cpath%20d=%22M66.05%2026.746c-2.9%200-5.3-2.4-5.3-5.3s2.4-5.3%205.3-5.3%205.3%202.4%205.3%205.3-2.4%205.3-5.3%205.3zm0-8.6c-1.8%200-3.3%201.5-3.3%203.3%200%201.8%201.5%203.3%203.3%203.3%201.8%200%203.3-1.5%203.3-3.3%200-1.8-1.5-3.3-3.3-3.3z%22/%3E%3Cpath%20d=%22M25.962%202.563l33.624%2018.883L25.962%2040.33V2.563z%22%20fill=%22none%22%20stroke=%22#000%22%20stroke-width=%223%22/%3E%3C/svg%3E" | |
| }, | |
| "design": { | |
| "graph": { | |
| "blocks": [ | |
| { | |
| "id": "5365ed8c-e5db-4445-938f-8d689830ea5c", | |
| "type": "basic.code", | |
| "data": { | |
| "code": "// NOT logic gate\n\nassign c = ~ a;", | |
| "params": [], | |
| "ports": { | |
| "in": [ | |
| { | |
| "name": "a" | |
| } | |
| ], | |
| "out": [ | |
| { | |
| "name": "c" | |
| } | |
| ] | |
| } | |
| }, | |
| "position": { | |
| "x": 256, | |
| "y": 48 | |
| } | |
| }, | |
| { | |
| "id": "18c2ebc7-5152-439c-9b3f-851c59bac834", | |
| "type": "basic.input", | |
| "data": { | |
| "name": "" | |
| }, | |
| "position": { | |
| "x": 64, | |
| "y": 144 | |
| } | |
| }, | |
| { | |
| "id": "664caf9e-5f40-4df4-800a-b626af702e62", | |
| "type": "basic.output", | |
| "data": { | |
| "name": "" | |
| }, | |
| "position": { | |
| "x": 752, | |
| "y": 144 | |
| } | |
| } | |
| ], | |
| "wires": [ | |
| { | |
| "source": { | |
| "block": "18c2ebc7-5152-439c-9b3f-851c59bac834", | |
| "port": "out" | |
| }, | |
| "target": { | |
| "block": "5365ed8c-e5db-4445-938f-8d689830ea5c", | |
| "port": "a" | |
| } | |
| }, | |
| { | |
| "source": { | |
| "block": "5365ed8c-e5db-4445-938f-8d689830ea5c", | |
| "port": "c" | |
| }, | |
| "target": { | |
| "block": "664caf9e-5f40-4df4-800a-b626af702e62", | |
| "port": "in" | |
| } | |
| } | |
| ] | |
| } | |
| } | |
| } | |
| } | |
| } |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
See FPGAwars/icestudio#408 (comment) for context