android - Is there anyway I can send SERIAL-USB data thru a HDMI port? -



android - Is there anyway I can send SERIAL-USB data thru a HDMI port? -

i have been working on project our android tablet has 1 microusb port.

since must communicate via serialusb external device, became little fuzzy after noticed leaving tablet powering bus (host mode) drains it`s battery till death. moreover, still must supply plenty energy powerfulness tablet.

after lot of attempted fails, such using otg-y cable, modifying kernel battery config , using usb hub, need find way perform communication , maintain tablet charging.

thought using hdmi or audio/serial. there solution can forwards solve this?

at point, i'm getting out of ideas.

you can utilize arduino, not normal one, you'll need mega, because ardiono mega arduino know of more 1 serial uart. uno illustration shares rx/tx serial pins same uart usb interface.

if have mega, can inexpensive usb serial module such this: http://www.ebay.com/sch/i.html?_from=r40&_sacat=0&_nkw=arduino+usb+to+serial&_sop=15

now, plug pc mega's normal usb powerfulness mega pc. connect tablet serial module.

all that's left create simple ino script mega transfer info serial (pc-usb) serial2 (tablet), , vice versa..

example:

void setup() { // set setup code here, run once: serial.begin(115200); // pc <--> usb serial1.begin(115200); // serial <--> tablet } void loop() { // set main code here, run repeatedly: serialcoms(); // tells loop execute serialcoms() function } // serial comunication function void serialcoms() { // read port 1 (tablet), send port 0 (pc): if (serial1.available()) { int inbyte = serial1.read(); serial.write(inbyte); } // read port 0 (pc), send port 1 (tablet): if (serial.available()) { int inbyte = serial.read(); serial1.write(inbyte); } }

note: may need add together #define entries before void setup define pins on serial usb module.

android usb battery usbserial hdmi

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