MIDIUSB library and ios

amowry · April 17, 2018, 4:08pm

I found a solution here:

fab672000/MIDIUSB_1x1/blob/master/MIDIUSB_1x1.ino

/*
 * MIDIUSB 1x1 interface, works with iPad.
 * 
 *   Currently tested boards are Arduino Micro, Leonardo.
 *   Not tested on Due but should work as well.
 * 
 *   Important Note: needs D_CONFIG macro in USBCore.h to be patched to change USB_CONFIG_POWER_MA(500) 
 *     with a lower value (i.e 20) in order to work with iPad, as it is bus powered by the tablet.
 * 
 * Created: October, 11 2016
 * Author: Fabien
 * License: GPL V3 © 2016 Fabien (https://github.com/fab672000)
 *  
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.

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The USB power configuration setting has to be changed to a lower value. I changed it to 20 ma and it's working great now.

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MIDIUSB library and ios

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