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====== Joshua Oreman: 802.11 wireless development ====== ===== Journal Week 10 ===== ==== Tuesday-Thursday, 28-30 July ==== I've been working on getting the ath5k driver gPXEfied: * On branch **ath5k**: * [[http://git.etherboot.org/?p=people/oremanj/gpxe.git;a=commit;h=1fd55b8b4151e1694c88caab02c3f9744f8d1dea| [error] Add macro to test type of error returned from another file]] * [[http://git.etherboot.org/?p=people/oremanj/gpxe.git;a=commit;h=fb7a4171a6964b49f43d4ddb918f095261610ee4| [802.11] Expose net80211_duration() as useful to drivers]] * [[http://git.etherboot.org/?p=people/oremanj/gpxe.git;a=commit;h=4de68cd3446b641f202b26eb0c422fe351993fcb| [rtl818x] Update rtl818x driver for API changes]] * [[http://git.etherboot.org/?p=people/oremanj/gpxe.git;a=commit;h=10f5eab6a2ad8e7b9eec758bf6248366f5ec03c3| [Makefile] Build ath5k driver]] * [[http://git.etherboot.org/?p=people/oremanj/gpxe.git;a=commit;h=cf45cada24f368ae9426c6165ab26b389671629f| [ath5k] Further gPXEficiation]] * [[http://git.etherboot.org/?p=people/oremanj/gpxe.git;a=commit;h=4495bab0f74a45aacb0a66080f95899294d214e2| [802.11] Expand channel hw_value field to 16 bits]] * [[http://git.etherboot.org/?p=people/oremanj/gpxe.git;a=commit;h=f13c1419806d5d1a63fb4f13532690a386b657b5| [ath5k] Cleanup for successful compilation]] I've gotten it to a compilable state, and fixed what runtime bugs I could, but I've run up against one that suggests no more fruitful approach than shooting in the dark: ath5k: resetting for channel change (2422 -> 2447 MHz) ath5k: reset to channel 0x2b0b4 (2447 MHz) ath5k: txq [u] 0, link 0x0 ath5k: hw reset to channel 0x2b0b4 (2447 MHz) <~1second pause> ath5k: noise floor calibration timeout (2447 MHz) Without the noise floor calibration (comments and observation suggest) the card can't receive any packets. A further analysis of the registers reveal that upon setting the NF calibrate bit, nothing happens - the bit remains set (it should be cleared by the card once calibration starts) and the noise floor register doesn't change. Suffice it to say, I'm rather confused.
