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[/] [minsoc/] [trunk/] [sw/] [support/] [tick.c] - Blame information for rev 53

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Line No. Rev Author Line
1 53 ConX.
#include "../support/or1200.h"
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#include "../support/support.h"
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#include "tick.h"
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int tick_int;
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void tick_ack(void)
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{
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        tick_int--;
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}
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void tick_init(void)
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{
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        mtspr(SPR_TTMR, 25000000 & SPR_TTMR_PERIOD);    //1s
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        //mtspr(SPR_TTMR, 125000 & SPR_TTMR_PERIOD);    //5ms
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        mtspr(SPR_TTMR, mfspr(SPR_TTMR) | SPR_TTMR_RT | SPR_TTMR_IE);   //restart after match, enable interrupt
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        mtspr(SPR_TTMR, mfspr(SPR_TTMR) & ~(SPR_TTMR_IP));    //clears interrupt
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        //set OR1200 to accept exceptions
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        mtspr(SPR_SR, mfspr(SPR_SR) | SPR_SR_TEE);
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        tick_int = 0;
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}
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void tick_except(void)
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{
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        tick_int++;
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        mtspr(SPR_TTMR, mfspr(SPR_TTMR) & ~(SPR_TTMR_IP));    //clears interrupt
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}

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