OpenMoCo
/
QEIx4_Example
QEIx4 Example
main.cpp
- Committer:
- jocis
- Date:
- 2014-09-02
- Revision:
- 0:bbf48777e304
- Child:
- 2:7c787d83331e
File content as of revision 0:bbf48777e304:
#include "mbed.h" #include "QEIx4.h" DigitalOut myled(LED1); Timer t; // ports for nxp LPC 1768 QEIx4 qei1(p30, p29, p28); // QEI with index signal for zeroing QEIx4 qei2(p27, p26, NC); // QEI only with AB signals QEIx4 qei3(p25, p24, NC, false); // QEI without interrups for polling mode int main() { t.start(); qei1.SetZeroOnIndex(true); // Set the flag to zero counter on next index signal rises while(1) { qei3.poll(); // poll manually without interrupt - sampling in this loop with about 2kHz if ( t.read_ms() > 500 ) // every half second { t.reset(); t.start(); myled = !myled; printf ( "\r\n%6d %6d %6d", (int)qei1, (int)qei2, (int)qei3 ); // print counter values } wait_us(500); // for about 2kHz } }