sram_test.c

来自「LPC-H2214-test_mem.zip 这是一款LPC2214开发板的示例」· C语言 代码 · 共 59 行

//sram_test.c
#include "sram_test.h"
#include "uart.h"

void WriteByteSRAM(unsigned long* Add, unsigned char uiData)
{
  //later
}

unsigned char ReadByteSRAM(unsigned long* Add)
{
  //later
  return 0;
}


void WriteSRAM(unsigned long* Add, unsigned long uiData)
{
  *Add = uiData;
}

unsigned long ReadSRAM(unsigned long* Add)
{
  return *Add;
}

void TestSRAM()
{
  //write to UART
  UART0WriteTxt("Testing SRAM \n\r");

  unsigned long i       = 0;      //need for cycles
  unsigned long* pAdd   = 0;      //pointer to SRAM

  //write data to SRAM
  UART0WriteTxt("Writing data to SRAM \n\r");
  for(i=0, pAdd=(unsigned long *)SRAM_BASE; pAdd < (unsigned long *)SRAM_BASE+SRAM_SIZE/4; ++pAdd,++i)
  {
    WriteSRAM(pAdd, i);
  }

  //read data from SRAM
  UART0WriteTxt("Reading data from SRAM \n\r");
  for(i=0, pAdd=(unsigned long *)SRAM_BASE; pAdd < (unsigned long *)SRAM_BASE+SRAM_SIZE/4; ++pAdd,++i)
  {
     if (*pAdd != i) break;
  }

  //compare read and write data
  //if data is same pAdd will reach last address
   if (pAdd >= (unsigned long *)SRAM_BASE+SRAM_SIZE/4)
   {
     UART0WriteTxt("Veryfied data is OK! \n\r");
   }
   else UART0WriteTxt("Veryfied is NOT OK! \n\r");

}