?? yc2440main.c
字號(hào):
#include "def.h"
#include "2410addr.h"
#include "2410lib.h"
#include "2410slib.h"
#include "uart.h"
#include "timer.h"
#include "led.h"
#include "timer.h"
U32 Console_Uart = 0;
U32 Console_Baud = 115200;
static void cal_cpu_bus_clk(void)
{
U32 val;
U8 m, p, s;
val = rMPLLCON;
m = (val>>12)&0xff;
p = (val>>4)&0x3f;
s = val&3;
SYS_FCLK = ((m+8)*(FIN/100)*2)/((p+2)*(1<<s))*100;
val = rCLKDIVN;
m = (val>>1)&3;
p = val&1;
val = rCAMDIVN;
s = val>>8;
switch (m) {
case 0:
SYS_HCLK = SYS_FCLK;
break;
case 1:
SYS_HCLK = SYS_FCLK>>1;
break;
case 2:
if(s&2)
SYS_HCLK = SYS_FCLK>>3;
else
SYS_HCLK = SYS_FCLK>>2;
break;
case 3:
if(s&1)
SYS_HCLK = SYS_FCLK/6;
else
SYS_HCLK = SYS_FCLK/3;
break;
}
if(p)
SYS_PCLK = SYS_HCLK>>1;
else
SYS_PCLK = SYS_HCLK;
rUPLLCON = (56<<12) | (2<<4) | 2;
}
int Main(U32 RstStat)
{
ChangeMPllValue(92,1,1); //400MHZ
SetClockDivider(2,1); //fclk:hclk:pclk=1:4:8
cal_cpu_bus_clk();
rGPHCON=(rGPHCON&0x3ffff)|(0x0a<<18);
rMISCCR=(rMISCCR&0x0f)|(0x02<<4);
rMISCCR=(rMISCCR&0x0f)|(0x03<<4);
rMISCCR=(rMISCCR&0x0f)|(0x04<<4);
Port_Init();
Isr_Init();
Uart_Init(0, Console_Baud);
Uart_Select(Console_Uart);
EnableModuleClock(CLOCK_ALL);
rGPBCON &= ~12;
rGPBCON |= 4;
rGPBDAT |= 2;
led();
}
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