Messages in this thread | | | Date | Mon, 25 Nov 2013 15:54:36 +0100 | From | Michael Lawnick <> | Subject | Re: [PATCH] i2c-mux-pca954x: Disable mux after 200ms timeout |
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Hi,
Am 25.11.2013 14:43, schrieb Mike Looijmans: > Leaving the mux enabled causes needless I2C traffic on the downstream > bus. De-selecting after every request causes excess I2C traffic and > switching. > > This patch implements a hybrid solution: After 200ms of inactivity, > the mux is disabled. ...
Have you checked against behavior on cascaded muxes? At least your desired timing will not look as expected. 200 ms: disable mux1 201 ms: enable mux1 - disable mux2 202 ms: enable mux2 - disable mux3 401 ms: disable mux1 402 ms: enable mux1 - disable mux2 602 ms: disable mux1 And on full second temperature sensor behind mux3 is read again ...
KR Michael
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