A "Best of the Best Practices" (BOBP) guide to developing in Python.
- "Build tools for others that you want to be built for you." - Kenneth Reitz
- "Simplicity is alway better than functionality." - Pieter Hintjens
#include "application.h" | |
#include "neopixel/neopixel.h" | |
SYSTEM_MODE(AUTOMATIC); | |
// Define which pins are connected with a 1-10M resistor. | |
// The first pin will be connected to the touch sensor | |
// and must be D0, D1, D2, D3, D4 A0, A1, A3, A4, A5, A6, A7 | |
// see: http://docs.spark.io/firmware/#interrupts-attachinterrupt |
sudo apt-get install avahi-daemon avahi-discover avahi-utils libnss-mdns mdns-scan |
Latency Comparison Numbers (~2012) | |
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L1 cache reference 0.5 ns | |
Branch mispredict 5 ns | |
L2 cache reference 7 ns 14x L1 cache | |
Mutex lock/unlock 25 ns | |
Main memory reference 100 ns 20x L2 cache, 200x L1 cache | |
Compress 1K bytes with Zippy 3,000 ns 3 us | |
Send 1K bytes over 1 Gbps network 10,000 ns 10 us | |
Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD |