Dia antes primera install

node_modules/i2c-bus/integration-test/sync-plain-i2c-performance.js

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+'use strict';
+
+const i2c = require('../');
+
+const ITERATIONS = 5000;
+
+const DS1621_ADDR = 0x48;
+const CMD_ACCESS_TL = 0xa2;
+
+const i2c1 = i2c.openSync(1);
+const cmdGetTL = Buffer.from([CMD_ACCESS_TL]);
+const tl = Buffer.alloc(2);
+
+let time = process.hrtime();
+
+// one operation is an i2cWriteSync and an i2cReadSync, i.e., two calls
+for (let operations = 1; operations <= ITERATIONS; operations += 1) {
+  i2c1.i2cWriteSync(DS1621_ADDR, cmdGetTL.length, cmdGetTL);
+  i2c1.i2cReadSync(DS1621_ADDR, 2, tl);
+}
+
+time = process.hrtime(time);
+const opsPerSec = Math.floor(ITERATIONS / (time[0] + time[1] / 1E9));
+
+i2c1.closeSync();
+
+console.log('ok - sync-plain-i2c-performance - ' + opsPerSec + ' (x 2) operations per second');
+