Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Tue, 30 Oct 2001 06:46:43 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Tue, 30 Oct 2001 06:46:31 -0500 Received: from viap112.atea.be ([194.78.143.112]:4103 "EHLO hrtades9.atea.be") by vger.kernel.org with ESMTP id ; Tue, 30 Oct 2001 06:46:09 -0500 Date: Tue, 30 Oct 2001 12:49:18 +0100 From: david.heremans@siemens.atea.be To: linux-kernel@vger.kernel.org Subject: Low-level help needed with leds Message-ID: <20011030124918.A1932@PCF988> Reply-To: david.heremans@siemens.atea.be Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="wRRV7LY7NUeQGEoC" Content-Disposition: inline User-Agent: Mutt/1.3.23i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org --wRRV7LY7NUeQGEoC Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Hello all, I'm writing to this maillinglist as a last resort, since reading books and other peoples code didn't solve my problem, and it is on the vague boundary of userspace/kernel. I recently got hold of a nice little piece of hardware that must be connected between the computer and the keyboard. You can program this device by sending it bytes trough the keyboard-leds. More about this device at http://www.andywarne.pwp.blueyonder.co.uk/, the device is called the I-Pac. The programming protocol description I got from the maker of this hardware states this sequence. 1. Set any led combination execpt all leds on. 2. Send five times all leds on. 3. The I-Pac will send a key-down code for the 'Y' (ready to program) or 'J' (jumper set to fixed) key. I don't get this key code back. I was wondering if I misunderstood the way the Linux kernel sends this LEDs commands. Does it send extra led commands that I don't know about? Maybe it doesn't send twice the same led formation since it would be a logical optimisation? Honestly, I'm completely clueless by now, and digging into the Linux source code is way to complicated for me, I honestly tried but got lost in it (tasklets et all) :-( I took the liberty of attaching a simplified version of my programming tool. If some of the more knowledgable people here could please help me out, thanks. Sincerely, David Heremans PS: I'm not subscribed to this list, I just scan the archieves and digests from time to time. So I you reply please put me in CC. PPS: When compiling the c program I also got redefine warnings in headers, sugestions to solve these are also welcomme, the include list I use is a mix of other example programs, so I'm not sure which are the exact ones to use. --wRRV7LY7NUeQGEoC Content-Type: application/x-gtar Content-Disposition: attachment; filename="led_test.tgz" Content-Transfer-Encoding: base64 H4sIAJ6azDsAA+1Ze1MbyRHnX/ZTNLo6W1IErMQrsQ5XYYFzsgW4TiSOK05Ro9VImrCaUe3s IlQO+ezpnofYFQLkO+qSVDHFc6a7p+c33T3drUhJrWK+GYve5iRRw4SNN8WERVtCRmvPNMJ6 GO7v7q6FYVg/2Avzv2nshwc7a/i93zjY3wkbe0i/t1M/WIPwuRR4bGQ6ZQnAWp9di/4jdE+t /5+OH/Ce46zP4Sed9oXaGr0N7qZ4ksiFqZQnY6F0cTKTArmLc3qmt4WK0rg4HQuZ3WxfGeIA oU9FBDpNsiiFdScbNLvml+6fGvSyATSDaIS3tL4eWXMdqz5vBkKmgEJjNoND2ENLasL29h6M RRwLzZG0ry0fCYx5vxnYf6uTZCjZGCUE21UYZDJKhZKA5p+qdDbhGqrbwbUSfbjis55iSf9S SJGWaarSXF9fR64R05Aq6HGIWIyy8a+BSjgwOQM1gHTEQeGPZC7eCDUqay77yKHLmdRiKJHX aEVTNSACc6RKc07cm6V8gZimHEXCdYo7G4k4ZebSdHYZ9RLOrsqkMOo7yXCWIJUspk0UMLAU QGCScp4xYdOyP+YyNly/z8M1T/1eTqM7Rk9t8BbjCV4gl3T3DpaHsP4tUH8LAK0Buui2cghR liS4JXROjtG+eJriJBKIAZTBWGm5e3HcPrt83+6cnJ3X4OPxn08ukLgGr5zxVKBCIgEGkwRP PSijxaN/1KD0o37jZFTmfDBgglR9Az/qr7JUA2dyNTJ2ZFNJ2ThXBW9sqdAvKgPJUQKePMkk nlJoGCRqbM7r3KCGGMANwQxTNHqQCo1HbeCGTiy/QSgblSbgf7doG3lIjBwHi8feQ6ObT4Dz 8d3p+fEJIDw5j3wYohw8jnMRn+WweP1Jffx2SqXRkKP1pElRr1f5uFGBnyA06qwvaFMqGBqM WeztxuNGW1HUOSxEIgwuVReqsoSuYDIjO0Otbr/Lr41l0jGWQ9u1dkdcldUsrvsrLI6OmOmY 80nZRRuyDDMB6FwmrM4wkkaJ8pE0d8qHApI5mlO2RIRkZ7SCSglSyoUtuMPKLMMrOIBa5uNe frlM62/f7lSeptknmp0cjdO4ECDn6M/ZnX97tocwb6ks7hsP8+FNJWJowhvB7h0HTwnOeBOO hiKh0bTON58IjWb34jSsFqW/Pe6Z3blnfrz8W+fo4oScEp7yyu6v9kr6EXyPv1jaregyHsRs CK8O4d9lOGn9fA7/gnbr6Oz8rGI4eTRSGN4HNYz6UkkR+XcE56zfWTFR9Pe/nrbP/oG71w2j ktwaFUsRvVSM+SL5Rfv0hOhDQy+VIUqccjbA6GUBBi5aXVTwM0Y9FGYjDAUYd6/lzXold83l 0JpgUHxYH7rm/Kv6HXf8y9HnVcLub7xggIdiLgFhnpdoMGZXnI5o5yzb/8odLQNnRQmrQLZ4 5QtpETyWFH1zD9sTV51/Z5srY3D/SQwWzfU7XrriMf/bpcvLeIZRqPmfreIvDlP/h+GD9f/+ rq3/d+r13XqjgfSNvd3dl/r/9xjb1QCqULQCDEdV+wUXGLUw+E1FOoLGVmOrfoCx25QON3/c B5ZEo4BCw7y+L0WP9JNKQfBouwGnkG2F1kKKoXy4MIe5KFvoNURUzD/Z0aBGhan6709Tf6I4 O4jkYkdjlUYHxtOuwkduGKsehv5rlgjWi22jIfihzwcCH8T2p6PW5ZfLUwhv6nsUgktfSrAJ R9GVVFN8goYcTvGJhRY9HPlBF1CU8Q5l/OkBGe9MOrkoZFFGy+jRODEyWiSjNeLRlc7GcEKv 3zJV7ssgPY4elmFUKUpZlPHB6rFrZHwgGR+y8QQzga5LuJeoc1+G0eNJGb2cOosyztodlBGG JOMCUxGFKZzlenjkLxcrtMuzcwAScKagg5VHbgta7XYA6rjaxZoLa/mOiq4WKM6QokH8COCS 5RYu0xlbbKKXrR91OlhCbVePSLrdPygWcZji+eLYVUrFdeETDwSqv5AIilrd104uTTDUt8Bj zWFpglo6Fn35OqVtTTOnz1Jmexxei7tOhk89SI9K6DLTW7Nksi0Xay4p1tjm0RL9TVujOIU7 0e9mrnDlEvMgqlx9X+ANLN/Ba5dG/YQJWQDEFtRTJlJTTzPEHE3GJP6mlZUmTOqxSDG6kgRX HRQlPJl2UzNnNK9LKVGl23HCYKqSK97fWJaFm06pycC16TIZJe4n33uWzuXeQkI9TEeamm6+ KUAarpJF27MM4kyPinQXrfb5+85fuj/b4xgKg1ZP4ZPTlojY9nlGuNERkdoQ4x+WizpaVfhk r8a8S+3NTyxydQIu1bfgU8v0CrSxsRhtLSIH5zcRn6RQor3QO7r4rpVMkjtvDFiXy7ccrMhG TuQe6CyKuNbims9laZJldtFwXyS64dI2xu+yZk+ws0UwHbWcV2nqMqATsAgNfwsuqNWIX0yj 6cZqqt+Qm1Xv4hq9KWOO9gul8481oGAwM1ZugO3FGHpKiywf5iwu9qLVkCucHp2emBKfrte5 mGUm4Jx3HhYCE51wSU/P6GHDh7EB6jkBVWxlpKw4ScuqNXLuMfkv/cGSYVSzoaFaxX+uXccI l4SNRIjfe5FoNCN6zIzDodk51U2zOlF0Fqql0C4wHwrsa2C71FOB4XDK7xq2GAwoFyAwcFuJ LzTJIzMK/CtCvyjsIgw8EwgBbBy67ubqzWOvoVcQ72uGdAi9UQP9OcWHZ7455NrIhY7AQky/ i5u/ZFL6xrLfzCSONGGjTB6Vr/Jug9vAQ2tUtX1I/APx4vBPTNERpYhlmtt1/OI3jD5H8Bt5 iDHcCh/S6PT0tND2JqZvohFsZhPg19TzpsNT3kdkVAOkecW9vDxy2pFNR9ymwCSur6aStkz4 EBNVVLdPTfk+3fAoG5PBs4R7aRp3QodCZmZ3GxhDIuMtgGZCujFnlOx3og4m09T/ulPOHQyX twrG4lq7O7bAsqE1TTifx20Pd4enr+kDEU72NeXGGszG+U8HKJT84e4jAoz23G9U/NDG3aY3 CJoTJt2NM9LbCIK5X/oPVppBgeurNLmcptaDAUoq9/nO/B4QUvRIfCu4jLzFoc2+1hsb3qqM SCkiXt5shLaj+JlbxvFEJSnDc73ZrLiHwmDh4UcbcqcrPPleqJWE6bQDy7V17C1ZiBz7widz NJX/rGwuTqpkjDCRj3lW42+k90uf5WW8jJfxMl7Gy3gZzz3+A4KYZVAAKAAA --wRRV7LY7NUeQGEoC-- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/