flashmemory.c.bak

LM3S8962 通过SSI方式读取 AT45DB161D 程序

#include  "Heads.h"
#include  "FlashMemory.h"

uint8 temp = 0;
void  SPIInit(void)
{
    SysCtlPeripheralEnable(SYSCTL_PERIPH_SSI);                           
    SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOA);
    SSIConfig(SSI_BASE, SSI_FRF_MOTO_MODE_0, SSI_MODE_MASTER, BitRate, DataWidth);
    SSIEnable(SSI_BASE);                                                
  
    GPIOPinTypeSSI( GPIO_PORTA_BASE, (GPIO_PIN_2 | GPIO_PIN_4 | GPIO_PIN_5) );
    GPIODirModeSet(GPIO_PORTA_BASE, Flash_CS, GPIO_DIR_MODE_OUT);            
    GPIOPadConfigSet( GPIO_PORTA_BASE, Flash_CS, GPIO_STRENGTH_2MA, GPIO_PIN_TYPE_STD );                               
    CE_High();
}


uint8 Send_Byte(uint8 data)
{    
    uint32 NullData;
   
   
    SSIDataPut(SSI_BASE, data);	
    SSIDataGet(SSI_BASE, &NullData); 
      
    return NullData;     
}


void Flash_RdID(uint8 ID_CMD, uint32* RcvbufPt)
{
    
        
    
    CE_Low();			
    Send_Byte(ID_CMD);
    temp = Send_Byte(0x00);
    temp = Send_Byte(0x00);
    CE_High();			 
}