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https://opencores.org/ocsvn/minsoc/minsoc/trunk
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[/] [minsoc/] [trunk/] [sw/] [support/] [tick.c] - Rev 111
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#include "or1200.h" #include "support.h" #include "tick.h" int tick_int; void tick_ack(void) { tick_int--; } void tick_init(void) { mtspr(SPR_TTMR, 25000000 & SPR_TTMR_PERIOD); //1s //mtspr(SPR_TTMR, 125000 & SPR_TTMR_PERIOD); //5ms mtspr(SPR_TTMR, mfspr(SPR_TTMR) | SPR_TTMR_RT | SPR_TTMR_IE); //restart after match, enable interrupt mtspr(SPR_TTMR, mfspr(SPR_TTMR) & ~(SPR_TTMR_IP)); //clears interrupt //set OR1200 to accept exceptions mtspr(SPR_SR, mfspr(SPR_SR) | SPR_SR_TEE); tick_int = 0; } void tick_except(void) { tick_int++; mtspr(SPR_TTMR, mfspr(SPR_TTMR) & ~(SPR_TTMR_IP)); //clears interrupt }
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