From 3127d1dc51e9968553c5acf4183acb4adc1e7e4f Mon Sep 17 00:00:00 2001
From: Cristian Maglie <c.maglie@arduino.cc>
Date: Wed, 24 Aug 2016 12:47:51 +0200
Subject: [PATCH] USB-CDC: Increased buffer size to 256 bytes
This change improves read performance when massive data is sent
via USB by exploiting the hardware capability to handle multi-packet
transfers autonomously.
---
cores/arduino/USB/USBCore.cpp | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/cores/arduino/USB/USBCore.cpp b/cores/arduino/USB/USBCore.cpp
index d27502c9..bd815d36 100644
--- a/cores/arduino/USB/USBCore.cpp
+++ b/cores/arduino/USB/USBCore.cpp
@@ -427,7 +427,7 @@ void USBDeviceClass::initEP(uint32_t ep, uint32_t config)
}
else if (config == (USB_ENDPOINT_TYPE_BULK | USB_ENDPOINT_OUT(0)))
{
- epHandlers[ep] = new DoubleBufferedEPOutHandler(usbd, ep, 64);
+ epHandlers[ep] = new DoubleBufferedEPOutHandler(usbd, ep, 256);
}
else if (config == (USB_ENDPOINT_TYPE_BULK | USB_ENDPOINT_IN(0)))
{
--
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