[ARM] how to configure counter with cmsis code

[hamedtahamtan]

hello
i coding cmsis for lpc1768
ther is som days that i try to run counter but i have some problems with it
at first i teke my code here and then i will describe my problem

// created by neamatollah tahamtan





#include "lpc17xx_gpio.h"
#include "lpc17xx_adc.h"
#include "lpc17xx_pinsel.h"
#include "lpc17xx_libcfg_default.h"
#include <stdio.h>
#include "lpc17xx_timer.h"
void delay (uint32_t Time)
{
    uint32_t i;
    
    i = 0;
    while (Time--) {
        for (i = 0; i < 5000; i++);
    }
}
// ****************************************************
int main (void)
{
PINSEL_CFG_Type PinCfg;	
TIM_TIMERCFG_Type TIM_ConfigStruct;
	TIM_CAPTURECFG_Type TIM_CaptureConfigStruct;
	// ---------------- Configuration ---------------	
	PinCfg.Funcnum = 3;
	PinCfg.OpenDrain = 0;
	PinCfg.Pinmode = 0;
	PinCfg.Portnum = 1;
	PinCfg.Pinnum = 27;
	PINSEL_ConfigPin(&PinCfg);
 
	// ---------------------------------------------------
	// Initialize timer 0, prescale count time of 100uS
 TIM_ConfigStruct.PrescaleOption = TIM_PRESCALE_TICKVAL;
	//TIM_ConfigStruct.PrescaleOption = TIM_PRESCALE_USVAL;
 TIM_ConfigStruct.PrescaleValue	= 2;

 	TIM_Init(LPC_TIM0, TIM_COUNTER_RISING_MODE,&TIM_ConfigStruct);
  //---------------------------------------------------------------	
	// use channel 0, CAPn.0
	TIM_CaptureConfigStruct.CaptureChannel = 1;
	// Enable capture on CAPn.0 rising edge
	TIM_CaptureConfigStruct.RisingEdge = ENABLE;
	// Enable capture on CAPn.0 falling edge
	TIM_CaptureConfigStruct.FallingEdge = DISABLE;
	// Generate capture interrupt
	TIM_CaptureConfigStruct.IntOnCaption = DISABLE;

	// Set configuration for Tim_config and Tim_MatchConfig
	TIM_ConfigCapture(LPC_TIM0, &TIM_CaptureConfigStruct);
	 TIM_ResetCounter(LPC_TIM0);

	TIM_Cmd(LPC_TIM0,ENABLE);
	
LPC_TIM0->CTCR=5;
	while (1)
	{
	
	}

}

i have 2 basic problem .
the first 1 is that when i init timer/counter i cant apoint a pin for input timer pulse with cmsis code and i forced to change then ctcr register manuly. like theis

LPC_TIM0->CTCR=5;

and it is work properly , but i want to do thes by smsis code )becuse this is a weakness in my coding .


the second one is that when i init timer as counter i cant set the prescaler AND THis lines dosnt work

// Initialize timer 0, prescale count time of 100uS
 TIM_ConfigStruct.PrescaleOption = TIM_PRESCALE_TICKVAL;
	//TIM_ConfigStruct.PrescaleOption = TIM_PRESCALE_USVAL;
 TIM_ConfigStruct.PrescaleValue	= 2;

before answering to this , i shuld apologize you becuse of my weak english writing:bang:.


thanke you!!