Content originally posted in LPCWare by Badman on Wed Apr 23 08:46:22 MST 2014 I have an example for LPC4088, which uses memory flash S29GL064 for Keil. Ported it to the LPCXpresso but the lack of data read from memory. Field variables NOR_ID always have a value 65535. Why below code works compiled in Keil, but not LPCXpresso ?
#include "emc_nor.h"
#include "lpc_timer.h"
/* Private define ------------------------------------------------------------*/
#define NOR_FLASH_START_ADDR ((uint32_t)0x90000000)
#define NOR_FLASH_END_ADDR ((uint32_t)0x90800000)
/* Delay definition */
#define SectorErase_Timeout ((uint32_t)0x00A00000)
#define ChipErase_Timeout ((uint32_t)0x30000000)
#define Program_Timeout ((uint32_t)0x00001400)
#define ADDR_SHIFT(A) (NOR_FLASH_START_ADDR + (2 * (A)))
#define NOR_WRITE(Address, Data) (*(volatile short *)(Address) = (Data))
typedef struct
{
uint16_t Manufacturer_Code;
uint16_t Device_Code1;
uint16_t Device_Code2;
uint16_t Device_Code3;
}
NOR_IDTypeDef;
NOR_IDTypeDef NOR_ID;
/*******************************************************************************
* Function Name : EMC_NOR_Init
* Description : Configures the FSMC and GPIOs to interface with the NOR memory.
* This function must be called before any write/read operation
* on the NOR.
* Input : None
* Output : None
* Return : None
* Attention : None
*******************************************************************************/
void EMC_NOR_Init(void)
{
TIM_TIMERCFG_Type TIM_ConfigStruct;
EMC_STATIC_MEM_Config_Type config;
/**************************************************************************
* Initialize EMC for NOR FLASH
**************************************************************************/
config.CSn = 1;
config.AddressMirror = 0;
config.ByteLane = 1;
config.DataWidth = 16;
config.ExtendedWait = 0;
config.PageMode = 0;
config.WaitWEn = 2;
config.WaitOEn = 2;
config.WaitWr = 0x1f;
config.WaitPage = 0x1f;
config.WaitRd = 0x1f;
config.WaitTurn = 0x1f;
StaticMem_Init(&config);
// init timer
TIM_ConfigStruct.PrescaleOption = TIM_PRESCALE_USVAL;
TIM_ConfigStruct.PrescaleValue= 1;
// Set configuration for Tim_config and Tim_MatchConfig
TIM_Init(LPC_TIM0, TIM_TIMER_MODE,&TIM_ConfigStruct);
TIM_Waitms(100);
//delay time
TIM_Waitms(10);
return;
}
/******************************************************************************
* Function Name : EMC_NOR_ReadID
* Description : Reads NOR memory's Manufacturer and Device Code.
* Input : - NOR_ID: pointer to a NOR_IDTypeDef structure which will hold
* the Manufacturer and Device Code.
* Output : None
* Return : None
* Attention : None
*******************************************************************************/
void EMC_NOR_ReadID(NOR_IDTypeDef* NOR_ID)
{
NOR_WRITE(ADDR_SHIFT(0x0555), 0x00AA);
NOR_WRITE(ADDR_SHIFT(0x02AA), 0x0055);
NOR_WRITE(ADDR_SHIFT(0x0555), 0x0090);
NOR_ID->Manufacturer_Code = *(volatile short *) ADDR_SHIFT(0x0000);
NOR_ID->Device_Code1 = *(volatile short *) ADDR_SHIFT(0x0001);
NOR_ID->Device_Code2 = *(volatile short *) ADDR_SHIFT(0x000E);
NOR_ID->Device_Code3 = *(volatile short *) ADDR_SHIFT(0x000F);
}
/******************************************************************************
* Function Name : EMC_NOR_ReturnToReadMode
* Description : Returns the NOR memory to Read mode.
* Input : None
* Output : None
* Return : NOR_SUCCESS
* Attention : None
*******************************************************************************/
NOR_Status EMC_NOR_ReturnToReadMode(void)
{
NOR_WRITE(NOR_FLASH_START_ADDR, 0x00F0);
return (NOR_SUCCESS);
}
void main (void)
{
uint32_t index;
uint16_t sector;
uint8_t nor_error;
/* Initialize the FSMC NOR Flash Interface */
EMC_NOR_Init();
/* Set the NOR read modes */
EMC_NOR_ReturnToReadMode();
EMC_NOR_ReadID(&NOR_ID);
while(1)
{
}
}
Content originally posted in LPCWare by Badman on Thu May 01 10:39:31 MST 2014 Problem solved. I forgot to set the bit EMCS in the register SCS: LPC_SC->SCS |= (1<<0);
