21 lines
629 B
C
21 lines
629 B
C
#include "xilinx_ip_defs.h"
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__IO uint32_t SysTick;
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void System_Init(void) {
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// Clear UARTLite FIFOs
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UART0->CTRL = 0x03;
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SysTick = 0;
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// Enable interrupts
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asm volatile("csrs mie, %0\n" : : "r"(0x80)); // Enable timer interrupt
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asm volatile("csrs mstatus, %0\n" : : "r"(0x8)); // Enable global interrupt
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// Setup systick timer
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TIMER0->TCSR0 = 0x12; // Generate mode, down count, auto-reload
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TIMER0->TCR0 = 0; // Clear counter
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TIMER0->TLR0 = SYS_CLK_FREQ / SYS_TICK_RATE; // Set reload value
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TIMER0->TCSR0 |= (1 << 0x06U) | (1 << 0x07U); // Enable timer interrupt, enable counter.
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} |