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113 lines
2.1 KiB
C
113 lines
2.1 KiB
C
/*
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* Copyright (C) 2014 INRIA
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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/**
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* @ingroup chronos
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* @{
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*/
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/**
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* @file
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* @brief eZ430-chronos radio driver (board dependent part)
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*
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* @author Oliver Hahm <oliver.hahm@inria.fr>
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*
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*/
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#include <stdint.h>
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#include <stdint.h>
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#include <cc430f6137.h>
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#include "cpu.h"
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#include "irq.h"
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#include "cc110x_legacy.h"
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#define CC1100_GDO0 (RF1AIN & BIT0)
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#define CC1100_GDO1 (RF1AIN & BIT1)
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#define CC1100_GDO2 (RF1AIN & BIT2)
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int cc110x_get_gdo0(void)
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{
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return CC1100_GDO0;
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}
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int cc110x_get_gdo1(void)
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{
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return CC1100_GDO1;
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}
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int cc110x_get_gdo2(void)
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{
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return CC1100_GDO2;
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}
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void cc110x_before_send(void)
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{
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// Disable GDO2 interrupt before sending packet
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cc110x_gdo2_disable();
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}
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void cc110x_after_send(void)
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{
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// Enable GDO2 interrupt after sending packet
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cc110x_gdo2_enable();
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}
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void cc110x_gdo0_enable(void)
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{
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RF1AIFG &= ~BIT0;
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RF1AIE |= BIT0;
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}
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void cc110x_gdo0_disable(void)
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{
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RF1AIE &= ~BIT0;
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RF1AIFG &= ~BIT0;
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}
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void cc110x_gdo2_disable(void)
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{
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RF1AIFG &= ~BIT2; // Clear a pending interrupt
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RF1AIE &= ~BIT2; // Disable the interrupt
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}
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void cc110x_gdo2_enable(void)
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{
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RF1AIFG &= ~BIT2; // Clear a pending interrupt
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RF1AIE |= BIT2; // Enable the interrupt
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}
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void cc110x_init_interrupts(void)
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{
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uint8_t state = disableIRQ(); /* Disable all interrupts */
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cc110x_gdo2_enable();
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cc110x_gdo0_disable();
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restoreIRQ(state); /* Enable all interrupts */
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}
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interrupt(CC1101_VECTOR) __attribute__((naked)) cc110x_isr(void)
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{
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__enter_isr();
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/* Check IFG */
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if (RF1AIV == RF1AIV_RFIFG2) {
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while (RF1AIN & BIT2);
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/* discard all further interrupts */
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RF1AIV = 0;
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cc110x_gdo2_irq();
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}
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if (RF1AIV == RF1AIV_RFIFG0) {
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cc110x_gdo0_irq();
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RF1AIE &= ~BIT0;
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}
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__exit_isr();
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}
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