lpc824 LpcOpen Stopwatch and RIT ... possible problem

lpcware — Wed, 15 Jun 2016 20:11:37 GMT

Content originally posted in LPCWare by efiLabs on Sun Dec 14 22:18:07 MST 2014

friends :

after creating my own timer class i had to revisit StopWatch_Init() and StopWatch_Start() where i took a few ideas from

my code didn't work right on timer over-runs and i stared at the LpcOpen code until i noticed that the 31 bit mask had one "F" to few and afterwards my code worked

sample copied from LpcOpen

in StopWatch_Init() :

Chip_MRT_SetInterval(LPC_MRT_CH1, 0x7ffffff | MRT_INTVAL_LOAD);

in StopWatch_Start() :

return 0x7ffffff - Chip_MRT_GetTimer(LPC_MRT_CH1);

unless lpcopen has something else in mind, i consider it wrong it should contain 0x7FFFFFFF

it works for me now

cheers efiLabs

topic lpc824 LpcOpen Stopwatch and RIT ... possible problem in LPC Microcontrollers

lpc824 LpcOpen Stopwatch and RIT ... possible problem