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KL05, KL25, KL26, KL46: Enable usticker 

Signed-off-by: Mahesh Mahadevan <mahesh.mahadevan@nxp.com>
pull/7009/head
Mahesh Mahadevan 2018-05-17 11:44:57 -05:00 committed by Bartek Szatkowski
parent 870600400d
commit 132dc87f3e
1 changed files with 35 additions and 21 deletions
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28
targets/TARGET_Freescale/TARGET_KLXX/us_ticker.c
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@ -1,5 +1,5 @@
/* mbed Microcontroller Library
* Copyright (c) 2006-2013 ARM Limited
* Copyright (c) 2006-2018 ARM Limited
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@ -18,14 +18,28 @@
#include "PeripheralNames.h"
#include "clk_freqs.h"
const ticker_info_t* us_ticker_get_info()
{
static const ticker_info_t info = {
1000000, // 1 MHz
32 // 32 bit counter
};
return &info;
}
static bool us_ticker_inited = false;
static void pit_init(void);
static void lptmr_init(void);
static int us_ticker_inited = 0;
void us_ticker_init(void) {
if (us_ticker_inited) return;
us_ticker_inited = 1;
if (us_ticker_inited) {
/* calling init again should cancel current interrupt */
us_ticker_disable_interrupt();
return;
}
us_ticker_inited = true;
pit_init();
lptmr_init();
@ -49,9 +63,6 @@ static void pit_init(void) {
}
uint32_t us_ticker_read() {
if (!us_ticker_inited)
us_ticker_init();
// The PIT is a countdown timer
return ~(PIT->CHANNEL[1].CVAL);
}
@ -177,6 +188,9 @@ static void lptmr_isr(void) {
us_ticker_int_remainder = 0;
} else {
/* Stop the timer */
LPTMR0->CSR &= ~LPTMR_CSR_TEN_MASK;
// This function is going to disable the interrupts if there are
// no other events in the queue
us_ticker_irq_handler();