If you get too many checksum or timing out err, set cpu frequency to 160MHz
result with two sketch
test(still running...)
160MHz/5sec report: 13.13H, 9400, err : 20(large sketch, too many err with 80MHz)
80MHz/5sec report: 8.1H, 5816, err : 0(simple sketch)
Interrupt driven DHT 11/21/22 sensor library for Spark
Supports reading DHT22/DHT21/DHT11 sensors without disabling interrupts
Scott Piette, Piette Technologies - [email protected]Jan 18, 2014 - Initial port to Spark Core
Oct 1, 2014 - Added DHT11/21 support, fixed timing issues, enhanced examples
| VERSION: | 0.2 |
| PURPOSE: | Interrupt driven non-blocking library for DHT sensors |
| LICENSE: | GPL v3 (http://www.gnu.org/licenses/gpl.html) |
BASED ON:
DHT11 interrupt library https://github.com/niesteszeckDHT11 library http://playground.arduino.cc/Main/DHT11Lib
Wiring diagram for Spark Core with DHT22 Sensor
DATASHEETS:
| DHT11 |
http://akizukidenshi.com/download/ds/aosong/dht11.pdf |
| DHT22 |
https://www.sparkfun.com/datasheets/Sensors/Temperature/DHT22.pdf |