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author | joeycastillo <joeycastillo@utexas.edu> | 2021-08-30 14:42:11 -0400 |
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committer | GitHub <noreply@github.com> | 2021-08-30 14:42:11 -0400 |
commit | eb3d9b26cbda2d2612f11eb39843b221224f1fa7 (patch) | |
tree | 7a514b4d21dd0d2a324a5e1313a144f26bf20799 /tinyusb/examples/device/hid_generic_inout/hid_test.js | |
parent | ee9cc322d301631c9ff0751d9bed717c6492b6a5 (diff) | |
parent | b0845cc3f1a8234a30c980eccf10e44765e4e105 (diff) | |
download | Sensor-Watch-eb3d9b26cbda2d2612f11eb39843b221224f1fa7.tar.gz Sensor-Watch-eb3d9b26cbda2d2612f11eb39843b221224f1fa7.tar.bz2 Sensor-Watch-eb3d9b26cbda2d2612f11eb39843b221224f1fa7.zip |
Merge pull request #9 from joeycastillo/usb-refactor
USB refactor / Makefile simplification
Diffstat (limited to 'tinyusb/examples/device/hid_generic_inout/hid_test.js')
-rwxr-xr-x | tinyusb/examples/device/hid_generic_inout/hid_test.js | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/tinyusb/examples/device/hid_generic_inout/hid_test.js b/tinyusb/examples/device/hid_generic_inout/hid_test.js new file mode 100755 index 00000000..daa958fd --- /dev/null +++ b/tinyusb/examples/device/hid_generic_inout/hid_test.js @@ -0,0 +1,68 @@ +// IMPORTANT: install the dependency via 'npm i node-hid' in the same location as the script +// If the install fails on windows you may need to run 'npm i -g windows-build-tools' first to be able to compile native code needed for this library + +var HID = require('node-hid'); +var os = require('os') +// list of supported devices +var boards = require('./boards.js') +var devices = HID.devices(); + +// this will choose any device found in the boards.js file +var deviceInfo = devices.find(anySupportedBoard); +var reportLen = 64; + +var message = "Hello World!" + +// Turn our string into an array of integers e.g. 'ascii codes', though charCodeAt spits out UTF-16 +// This means if you have characters in your string that are not Latin-1 you will have to add additional logic for character codes above 255 +var messageBuffer = Array.from(message, function(c){return c.charCodeAt(0)}); + +// HIDAPI requires us to prepend a 0 for single hid report as dummy reportID +messageBuffer.unshift(0) + +// Some OSes expect that you always send a buffer that equals your report length +// So lets fill up the rest of the buffer with zeros +var paddingBuf = Array(reportLen-messageBuffer.length); +paddingBuf.fill(0) +messageBuffer = messageBuffer.concat(paddingBuf) + +// check if we actually found a device and if so send our messageBuffer to it +if( deviceInfo ) { + console.log(deviceInfo) + var device = new HID.HID( deviceInfo.path ); + + // register an event listener for data coming from the device + device.on("data", function(data) { + // Print what we get from the device + console.log(data.toString('ascii')); + }); + + // the same for any error that occur + device.on("error", function(err) {console.log(err)}); + + // send our message to the device every 500ms + setInterval(function () { + device.write(messageBuffer); + },500) +} + + +function anySupportedBoard(d) { + + for (var key in boards) { + if (boards.hasOwnProperty(key)) { + if (isDevice(boards[key],d)) { + console.log("Found " + d.product); + return true; + } + } + } + return false; +} + + +function isDevice(board,d){ + // product id 0xff is matches all + return d.vendorId==board[0] && (d.productId==board[1] || board[1] == 0xFFFF); +} + |