From e033b729129d6ebb1f902186bf8f32eb51af1c3c Mon Sep 17 00:00:00 2001
From: Gol <hypergol@gmail.com>
Date: Thu, 13 Mar 2014 06:09:02 +0400
Subject: [PATCH] Added setFreq

---
 motorshield/motorshield.js | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/motorshield/motorshield.js b/motorshield/motorshield.js
index 428a49c..2ef64e1 100644
--- a/motorshield/motorshield.js
+++ b/motorshield/motorshield.js
@@ -28,10 +28,20 @@ exports.setDivider = function (value) {
 	divider = value;
 	freq = parseInt(25000000 / (divider + 1) / 4096);
 	tic =  1 / freq / 4096;
-
+	fs.writeFileSync("/sys/bus/i2c/devices/1-00" + address.toString(16) + "/freq", divider);
 	console.log("freq divider set to " + value);
 }
 
+/* set I2C PWM frequency */
+exports.setFreq = function (value) {
+	freq = value;
+	divider = Math.round(25000000 / (4096 * freq)) -1;
+	tic =  1 / freq / 4096;
+	fs.writeFileSync("/sys/bus/i2c/devices/1-00" + address.toString(16) + "/freq", divider);
+	console.log("freq set to " + value);
+}
+
+
 /* motorshield init */
 exports.init = function () {