Files
c_soft/riscv/startup/main.c
andy 8003bbd256 riscv模拟器配置与fpga同步
slab内存分配器似乎不能支持小内存池,改为heap方式
2025-11-11 15:20:05 +08:00

96 lines
1.7 KiB
C

#include "stdint.h"
#include "stdio.h"
#include "stdarg.h"
#include "head.h"
#include "rtthread.h"
#define UART0_BASE (0x30000000)
#define UART0_CTRL (UART0_BASE + (0x00))
#define UART0_STATUS (UART0_BASE + (0x04))
#define UART0_BAUD (UART0_BASE + (0x08))
#define UART0_TXDATA (UART0_BASE + (0x0c))
#define UART0_RXDATA (UART0_BASE + (0x10))
#define UART0_REG(addr) (*((volatile uint32_t *)addr))
// send one char to uart
void my_putc(uint8_t c)
{
while (UART0_REG(UART0_STATUS) & 0x1);
UART0_REG(UART0_TXDATA) = c;
}
// Block, get one char from uart.
uint8_t uart_getc()
{
UART0_REG(UART0_STATUS) &= ~0x2;
while (!(UART0_REG(UART0_STATUS) & 0x2));
return (UART0_REG(UART0_RXDATA) & 0xff);
}
// 115200bps, 8 N 1
void uart_init()
{
// enable tx and rx
UART0_REG(UART0_CTRL) = 0x3;
}
int my_puts(const char *s,int len) {
for (int i = 0;i < len;i++) {
my_putc(s[i]);
}
return 0;
}
static char g_print_buff[1024];
int my_printf(const char* fmt, ...) {
int len = 0;
va_list args;
va_start(args, fmt);
len = vsnprintf(g_print_buff, 1024, fmt, args);
va_end(args);
my_puts(g_print_buff, len);
return len;
}
char g_string[] = "string from ram";
void task1(void* par) {
(void)par;
while (1) {
my_printf("task1: %s\n", g_string);
rt_thread_delay(500);
}
}
int main()
{
my_printf("Hello World! %s\n", "Andy");
// cpu_test();
rt_thread_t t = rt_thread_create("task1", task1, 0, 1024, 10, 10);
(void)t;
rt_thread_startup(t);
my_printf("enter while 1\n");
while (1) {
rt_size_t total, used, max_used;
rt_memory_info(&total, &used, &max_used);
my_printf("main: total=%d, used=%d, max_used=%d\n", total,used,max_used);
rt_thread_delay(1000);
}
return 0;
}