mirror of
https://github.com/RIOT-OS/RIOT.git
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3989945679
This PR converts tabs to white spaces.
The statement I used for the conversion:
```find . -name "*.[ch]" -exec zsh -c 'expand -t 4 "$0" > /tmp/e && mv /tmp/e "$0"' {} \;```
Afterwards, I had a quick overview of the converted files to prevent odd indentation.
95 lines
2.7 KiB
C
95 lines
2.7 KiB
C
/******************************************************************************
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Copyright (C) 2013, Freie Universitaet Berlin (FUB). All rights reserved.
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These sources were developed at the Freie Universitaet Berlin, Computer Systems
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and Telematics group (http://cst.mi.fu-berlin.de).
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-------------------------------------------------------------------------------
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This file is part of RIOT.
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This file is subject to the terms and conditions of the LGPLv2.
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See the file LICENSE in the top level directory for more details.
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*******************************************************************************/
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/**
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* @ingroup lpc2387
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* @{
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*/
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#include "cpu.h"
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#include <stdint.h>
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#include "VIC.h"
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void lpc2387_pclk_scale(uint32_t source, uint32_t target, uint32_t *pclksel, uint32_t *prescale)
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{
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uint32_t pclkdiv;
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*prescale = source / target;
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if ((*prescale % 16) == 0) {
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*pclksel = 3;
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pclkdiv = 8;
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}
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else if ((*prescale % 8) == 0) {
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*pclksel = 0;
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pclkdiv = 4;
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}
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else if ((*prescale % 4) == 0) {
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*pclksel = 2;
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pclkdiv = 2;
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}
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else {
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*pclksel = 1;
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pclkdiv = 1;
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}
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*prescale /= pclkdiv;
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if (*prescale % 2) {
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(*prescale)++;
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}
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}
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void cpu_clock_scale(uint32_t source, uint32_t target, uint32_t *prescale)
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{
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uint32_t pclksel;
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lpc2387_pclk_scale(source, target, &pclksel, prescale);
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PCLKSEL0 = (PCLKSEL0 & ~(BIT2 | BIT3)) | (pclksel << 2); // timer 0
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PCLKSEL0 = (PCLKSEL0 & ~(BIT4 | BIT5)) | (pclksel << 4); // timer 1
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PCLKSEL1 = (PCLKSEL1 & ~(BIT12 | BIT13)) | (pclksel << 12); // timer 2
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}
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/******************************************************************************
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** Function name: install_irq
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**
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** Descriptions: Install interrupt handler
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** parameters: Interrupt number, interrupt handler address,
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** interrupt priority
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** Returned value: true or false, return false if IntNum is out of range
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**
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******************************************************************************/
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#define VIC_BASE_ADDR 0xFFFFF000
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bool install_irq(int IntNumber, void (*HandlerAddr)(void), int Priority)
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{
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int *vect_addr;
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int *vect_cntl;
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VICIntEnClr = 1 << IntNumber; /* Disable Interrupt */
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if (IntNumber >= VIC_SIZE) {
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return (false);
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}
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else {
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/* find first un-assigned VIC address for the handler */
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vect_addr = (int *)(VIC_BASE_ADDR + VECT_ADDR_INDEX + IntNumber * 4);
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vect_cntl = (int *)(VIC_BASE_ADDR + VECT_CNTL_INDEX + IntNumber * 4);
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*vect_addr = (int)HandlerAddr; /* set interrupt vector */
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*vect_cntl = Priority;
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VICIntEnable = 1 << IntNumber; /* Enable Interrupt */
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return(true);
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}
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}
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/** @} */
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