62 lines
1.3 KiB
C
62 lines
1.3 KiB
C
#pragma once
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struct TimerControl {
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union {
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struct {
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uint32_t MDT0 : 1;
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uint32_t UDT0 : 1;
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uint32_t GENT0 : 1;
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uint32_t CAPT0 : 1;
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uint32_t ARHT0 : 1;
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uint32_t LOAD0 : 1;
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uint32_t ENIT0 : 1;
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uint32_t ENT0 : 1;
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uint32_t T0INT : 1;
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uint32_t PWMA0 : 1;
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uint32_t ENALL : 1;
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uint32_t CASC : 1;
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uint32_t reserved : 20;
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};
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uint32_t raw;
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};
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};
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struct Timer {
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volatile TimerControl TCSR0;
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volatile uint32_t TLR0;
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volatile uint32_t TCR0;
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uint32_t _reserved;
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volatile TimerControl TCSR1;
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volatile uint32_t TLR1;
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volatile uint32_t TCR1;
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void EnableT1() {
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TCSR1.ARHT0 = 1;
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TCSR1.ENT0 = 1;
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}
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uint32_t GetT1Ticks() { return TCR1; }
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void SetupAsWdt(uint32_t timeout_ticks) {
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TLR0 = timeout_ticks;
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TCSR0.LOAD0 = 1; // reset counter
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TCSR0.UDT0 = 1; // count backwards from the load value
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TCSR0.ENIT0 = 1; // enable interrupt
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TCSR0.LOAD0 = 0; // allow counter to run
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TCSR0.ENT0 = 1; // enable timer
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}
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void Pet() {
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TCSR0.ENT0 = 0;
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TCSR0.LOAD0 = 1;
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TCSR0.LOAD0 = 0;
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TCSR0.ENT0 = 1;
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}
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};
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#define timer0 ((Timer*)0x40002000)
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