SPI,I2C interfaces in Pi - Raspberry Pi Forums

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hi,
going through article : http://www.airspayce.com/mikem/bcm2835/

under heading "real time performance constraints" talks constraints , says "this means should not expect real-time performance or real-time timing constraints such programs."

questions are
1. what's solution of problem in pi's context. how can make part of kernel ?
2.how in other devices, mobile phones, such interfaces work in real-time.say applications , games designed using accelerometer on mobile phone reacts in real-time .

regards,
tk

a short answer pi wasn't designed real time. rather multi purpose teaching tool. there many things going on in background interrupt such applications , can cause small delays. in applications isn't issue true real time tiny delay can cause issues.

question 2 don't believe many examples category considered real time rather data doesn't change fast enough real time application. 1 reason arduino products suit these situations better have 1 thing going on them allows more precise timing. believe real time can defined in milliseconds know constraints tight , must consistent.


raspberrypi



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