48 lines
1.3 KiB
C
48 lines
1.3 KiB
C
#include <stdint.h>
|
|
#include <stdio.h>
|
|
|
|
|
|
#include "main.h"
|
|
|
|
#define DDR_BASE 0x1FC00000
|
|
#define DDR_LENGTH 0x100
|
|
|
|
xilinx_uartlite_handle_t soc_uart;
|
|
xilinx_gpio_handle_t soc_gpio;
|
|
|
|
int main(int argc, char *argv[]) {
|
|
printf("Dumping first 256 bytes of DDR memory...\r\n");
|
|
for(uint32_t i = DDR_BASE; i < DDR_BASE + DDR_LENGTH; i++) {
|
|
printf("%02x ", *(uint8_t *)i);
|
|
if((i + 1) % 16 == 0) {
|
|
printf("\r\n");
|
|
}
|
|
}
|
|
printf("Dump done.\r\n");
|
|
printf("== RISC-V: The Free and Open RISC Instruction Set Architecture ==\r\n");
|
|
printf("Running on LowRISC Ibex\r\n");
|
|
|
|
printf("System core frequency: %ld\r\n", GetCoreClock());
|
|
|
|
volatile uint32_t reg_buf = 0;
|
|
asm volatile("csrr %0, misa\n" : "=r"(reg_buf));
|
|
printf("MISA: 0x%08x\r\n", reg_buf);
|
|
|
|
asm volatile("csrr %0, mhartid\n" : "=r"(reg_buf));
|
|
printf("MHARTID: 0x%08x\r\n", reg_buf);
|
|
|
|
uint32_t previous_tick = GetTick();
|
|
|
|
xilinx_gpio_pinmode(&soc_gpio, 1, 1);
|
|
xilinx_gpio_write(&soc_gpio, 1, 0);
|
|
|
|
while(1) {
|
|
if(GetTick() - previous_tick >= 500) {
|
|
previous_tick = GetTick();
|
|
xilinx_gpio_toggle(&soc_gpio, 1);
|
|
printf("SysTick: %lu\r\n", GetTick());
|
|
printf("MCycle: %llu\r\n", __read_mcycle());
|
|
}
|
|
}
|
|
return 0;
|
|
} |