LPC1857 external clock based timer interrupt generation

lpcware — Wed, 15 Jun 2016 18:20:49 GMT

Content originally posted in LPCWare by Nikhil Durlabhjibhai Dhameliya on Fri Jun 03 02:16:25 MST 2016
Hi Sir,

I want to generate interrupt on every rising edge of the PCLK signal [CAP1.1 pin] using timer1 as counter mode.
My PCLK clock frequency is 22.5MHz but it is not generating timer interrupt.
My settings for Timer are below:

Chip_SCU_PinMuxSet(0x5, 1, (SCU_MODE_INACT | SCU_MODE_INBUFF_EN | SCU_MODE_ZIF_DIS | SCU_MODE_FUNC5));//P5_1 pin

Chip_Clock_EnableOpts(CLK_MX_TIMER1, true, true, 1);

LPC_TIMER1->CTCR = 5;//Counter Mode Rising / CAP1.1
LPC_TIMER1->PR = 0 ;//no Prescaler
LPC_TIMER1->MR[0] = 1 ;
LPC_TIMER1->MCR = 3;//on match reset counter + interrupt
LPC_TIMER1->EMR = 0;
NVIC_SetPriority( TIMER1_IRQn, 14);
NVIC_EnableIRQ(TIMER1_IRQn);
LPC_TIMER1->TCR = 3;//Reset counter
LPC_TIMER1->TCR = 1;
Kindly give any suggestion.

Re: LPC1857 external clock based timer interrupt generation

lpcware — Sun, 19 Jun 2016 01:12:26 GMT

bump

topic Re: LPC1857 external clock based timer interrupt generation in LPC Microcontrollers

LPC1857 external clock based timer interrupt generation

Re: LPC1857 external clock based timer interrupt generation