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139 lines
2.8 KiB
C
139 lines
2.8 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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#ifndef _CPU_H
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#define _CPU_H
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/**
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* @defgroup msp430 TI MSP430
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* @ingroup cpu
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* @brief Texas Instruments MSP430 specific code
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<h2>First steps</h2>
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\li See the <a href="../manual/index.html">manual</a> for toolchain and ide setup
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* @{
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*/
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#include <stdio.h>
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#include <legacymsp430.h>
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#include "board.h"
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#include <msp430.h>
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#include "sched.h"
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#include "msp430_types.h"
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#include "cpu-conf.h"
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#define WORDSIZE 16
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/* CPU speed */
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#define F_CPU (2457600ul)
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#define F_RC_OSCILLATOR (32768) ///< Frequency of internal RC oscillator
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extern volatile int __inISR;
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extern char __isr_stack[MSP430_ISR_STACK_SIZE];
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//#define eINT() eint()
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//#define dINT() dint()
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inline void __save_context_isr(void)
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{
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__asm__("push r15");
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__asm__("push r14");
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__asm__("push r13");
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__asm__("push r12");
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__asm__("push r11");
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__asm__("push r10");
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__asm__("push r9");
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__asm__("push r8");
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__asm__("push r7");
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__asm__("push r6");
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__asm__("push r5");
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__asm__("push r4");
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__asm__("mov.w r1,%0" : "=r"(active_thread->sp));
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}
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inline void __restore_context_isr(void)
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{
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__asm__("mov.w %0,r1" : : "m"(active_thread->sp));
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__asm__("pop r4");
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__asm__("pop r5");
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__asm__("pop r6");
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__asm__("pop r7");
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__asm__("pop r8");
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__asm__("pop r9");
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__asm__("pop r10");
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__asm__("pop r11");
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__asm__("pop r12");
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__asm__("pop r13");
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__asm__("pop r14");
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__asm__("pop r15");
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}
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inline void __enter_isr(void)
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{
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__save_context_isr();
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__asm__("mov.w %0,r1" : : "i"(__isr_stack+MSP430_ISR_STACK_SIZE));
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__inISR = 1;
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}
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inline void __exit_isr(void)
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{
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__inISR = 0;
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if (sched_context_switch_request) {
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sched_run();
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}
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__restore_context_isr();
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__asm__("reti");
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}
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inline void __save_context(void)
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{
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__asm__("push r2"); /* save SR */
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__save_context_isr();
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}
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inline void __restore_context(void)
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{
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__restore_context_isr();
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__asm__("reti");
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}
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inline void eINT(void)
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{
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// puts("+");
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eint();
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}
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inline void dINT(void)
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{
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// puts("-");
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dint();
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}
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#define lpm_set(...)
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void thread_yield(void);
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int inISR(void);
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void msp430_cpu_init(void);
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/** @} */
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#endif // _CPU_H
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