added SOP-8 (#128)

* added SOP-8

* Added SOP-8

src/fn/index.ts

@@ -1,3 +1,4 @@
+import { sop8 } from "./sop8"
 export { dip } from "./dip"
 export { diode } from "./diode"
 export { cap } from "./cap"
@@ -31,3 +32,4 @@ export { breakoutheaders } from "./breakoutheaders"
 export { hc49 } from "./hc49"
 export { pad } from "./pad"
 export { to92 } from "./to92"
+export { sop8 } from "./sop8"

src/fn/sop8.ts

@@ -0,0 +1,55 @@
+import type { AnySoupElement, PcbSilkscreenPath } from "circuit-json"
+import { extendSoicDef, type SoicInput, getCcwSoicCoords } from "./soic"
+import { rectpad } from "src/helpers/rectpad"
+import { type SilkscreenRef, silkscreenRef } from "src/helpers/silkscreenRef"
+
+export const sop8_def = extendSoicDef({})
+
+export const sop8 = (
+  raw_params: SoicInput,
+): { circuitJson: AnySoupElement[]; parameters: any } => {
+  const parameters = sop8_def.parse(raw_params)
+  const pads: AnySoupElement[] = []
+
+  for (let i = 0; i < parameters.num_pins; i++) {
+    const { x, y } = getCcwSoicCoords({
+      num_pins: parameters.num_pins,
+      pn: i + 1,
+      w: parameters.w,
+      p: parameters.p ?? 1.27,
+      pl: parameters.pl,
+      widthincludeslegs: true,
+    })
+    pads.push(
+      rectpad(i + 1, x, y, parameters.pl ?? "1.5mm", parameters.pw ?? "0.6mm"),
+    )
+  }
+
+  const sh = (parameters.num_pins / 2 - 1) * parameters.p + parameters.pw
+  const silkscreenRefText: SilkscreenRef = silkscreenRef(
+    0,
+    sh / 2 - 0.5,
+    sh / 12,
+  )
+
+  const silkscreenLine: PcbSilkscreenPath = {
+    layer: "top",
+    pcb_component_id: "",
+    pcb_silkscreen_path_id: "",
+    type: "pcb_silkscreen_path",
+    route: [
+      { x: -parameters.w / 3, y: sh / 2 + 0.2 },
+      { x: parameters.w / 3, y: sh / 2 + 0.2 },
+    ],
+    stroke_width: 0.1,
+  }
+
+  return {
+    circuitJson: [
+      ...pads,
+      silkscreenRefText,
+      silkscreenLine,
+    ] as AnySoupElement[],
+    parameters,
+  }
+}

tests/sop8.test.ts

@@ -0,0 +1,9 @@
+import { test, expect } from "bun:test"
+import { convertCircuitJsonToPcbSvg } from "circuit-to-svg"
+import { fp } from "../src/footprinter"
+
+test("sop8", () => {
+  const soup = fp.string("sop8").circuitJson()
+  const svgContent = convertCircuitJsonToPcbSvg(soup)
+  expect(svgContent).toMatchSvgSnapshot(import.meta.path, "sop8")
+})