Merge pull request #236 from neilt6/master

Fixed readNB() bug
2014-03-27 09:41:45 +00:00 · 2014-03-27 09:41:45 +00:00 · 3d49a491d4
parent c81f9207c4 f0453b3e07
commit 3d49a491d4
1 changed files with 3 additions and 0 deletions
--- a/libraries/USBDevice/USBHID/USBHID.cpp
+++ b/libraries/USBDevice/USBHID/USBHID.cpp
@ -59,6 +59,9 @@ bool USBHID::readNB(HID_REPORT *report)
    uint32_t bytesRead = 0;
    bool result;
    result = USBDevice::readEP_NB(EPINT_OUT, report->data, &bytesRead, MAX_HID_REPORT_SIZE);
+    // if readEP_NB did not succeed, does not issue a readStart
+    if (!result)
+        return false;
    report->length = bytesRead;
    if(!readStart(EPINT_OUT, MAX_HID_REPORT_SIZE))
        return false;