LPC8xx Multi-Rate Timer example

Detailed Description

Example description
The MRT example demonstrates using the Multi-Rate Timer API functions. This example configures the MRT using the GetIdleChannel function to initialize a timer channel. If a timer channel is not available because all channels are in-use, the RED LED is illuminated. Otherwise, a timer channel is configured as a one-shot timer with a pseudo-random value. Every pass through the MRT Interrupt Handler toggles a LED, while another LED is toggled on every SysTick.

Special connection requirements
There are no special connection requirements for this example.

Build procedures:
LPC8xx example quickstart for IAR EWARM
LPC8xx example quickstart for Keil uVision4
LPC8xx example quickstart for Code Red Xpresso

Supported boards and board setup:
NXP Xpresso LPC812 board

Submitting LPCOpen issues:
Community support for LPCOpen

Macros
#define	TICKRATE_HZ   (10) /* 10 ticks per second */
#define	RNG_MULTI   (69069)
#define	NO_LO_BITS(x)   (x >> 8)

Functions
static uint32_t	RAND (void)
void	SysTick_Handler (void)
	Handle interrupt from SysTick timer.
void	MRT_IRQHandler (void)
	Handle interrupt from MRT.
int	main (void)
	MRT example main function.

Variables
static uint32_t	rng = 1234UL

Macro Definition Documentation

#define NO_LO_BITS

(

x

)

(x >> 8)

Definition at line 67 of file mrt.c.

#define RNG_MULTI   (69069)

Definition at line 66 of file mrt.c.

#define TICKRATE_HZ   (10) /* 10 ticks per second */

Definition at line 65 of file mrt.c.

Function Documentation

int main

(

void

)

MRT example main function.

Main program body.

Returns

Status (This function will not return)

defined(CHIP_LPC175X_6X)

Definition at line 142 of file mrt.c.

void MRT_IRQHandler

(

void

)

Handle interrupt from MRT.

Returns

Nothing

Definition at line 104 of file mrt.c.

static uint32_t RAND ( void  )

static

Definition at line 80 of file mrt.c.

void SysTick_Handler

(

void

)

Handle interrupt from SysTick timer.

SysTick 1mS tick handler.

Returns

Nothing

Definition at line 94 of file mrt.c.

Variable Documentation

uint32_t rng = 1234UL

static

Definition at line 69 of file mrt.c.