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/******************************************************************************************************************************************
* �ļ�����: SWM320_norflash.c
* ����˵��: SWM320��Ƭ����NOR Flash��������
* ����֧��: http://www.synwit.com.cn/e/tool/gbook/?bid=1
* ע������:
* �汾����: V1.1.0 2017��10��25��
* ������¼:
*
*
*******************************************************************************************************************************************
* @attention
*
* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS WITH CODING INFORMATION
* REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME. AS A RESULT, SYNWIT SHALL NOT BE HELD LIABLE
* FOR ANY DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE CONTENT
* OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING INFORMATION CONTAINED HEREIN IN CONN-
* -ECTION WITH THEIR PRODUCTS.
*
* COPYRIGHT 2012 Synwit Technology
*******************************************************************************************************************************************/
#include "SWM320.h"
#include "SWM320_norflash.h"
/******************************************************************************************************************************************
* ��������: NORFL_Init()
* ����˵��: NOR Flash��������ʼ��
* �� ��: NORFL_InitStructure * initStruct ����NOR Flash����������趨ֵ�Ľṹ��
* �� ��: ��
* ע������: ��
******************************************************************************************************************************************/
void NORFL_Init(NORFL_InitStructure *initStruct)
{
uint32_t i;
// ����SRAMǰ��Ҫˢ����SDRAM������
do
{
SYS->CLKEN |= (1 << SYS_CLKEN_SDRAM_Pos);
while (SDRAMC->REFDONE == 0);
SDRAMC->REFRESH &= ~(1 << SDRAMC_REFRESH_EN_Pos);
for (i = 0; i < 1000; i++) __NOP();
SYS->CLKEN &= ~(1 << SYS_CLKEN_SDRAM_Pos);
}
while (0);
SYS->CLKEN |= (1 << SYS_CLKEN_NORFL_Pos);
NORFLC->CR = ((initStruct->DataWidth == 8 ? 1 : 0) << NORFLC_CR_BYTEIF_Pos) |
(initStruct->WELowPulseTime << NORFLC_CR_WRTIME_Pos) |
(initStruct->OEPreValidTime << NORFLC_CR_RDTIME_Pos);
NORFLC->IE = 3;
NORFLC->IF = 3; // ����жϱ�־
if (initStruct->OperFinishIEn) NORFLC->IM &= ~(1 << NORFLC_IM_FINISH_Pos);
else NORFLC->IM |= (1 << NORFLC_IM_FINISH_Pos);
if (initStruct->OperTimeoutIEn) NORFLC->IM &= ~(1 << NORFLC_IM_TIMEOUT_Pos);
else NORFLC->IM |= (1 << NORFLC_IM_TIMEOUT_Pos);
}
/******************************************************************************************************************************************
* ��������: NORFL_ChipErase()
* ����˵��: NOR Flash��Ƭ����
* �� ��: ��
* �� ��: uint32_t 0 �����ɹ� 1 ������ʱ
* ע������: ��
******************************************************************************************************************************************/
uint32_t NORFL_ChipErase(void)
{
uint32_t res;
NORFLC->CMD = (NORFL_CMD_CHIP_ERASE << NORFLC_CMD_CMD_Pos);
while (((NORFLC->IF & NORFLC_IF_FINISH_Msk) == 0) &&
((NORFLC->IF & NORFLC_IF_TIMEOUT_Msk) == 0)) __NOP();
if (NORFLC->IF & NORFLC_IF_FINISH_Msk) res = 0;
else res = 1;
NORFLC->IF = NORFLC_IF_FINISH_Msk | NORFLC_IF_TIMEOUT_Msk;
return res;
}
/******************************************************************************************************************************************
* ��������: NORFL_SectorErase()
* ����˵��: NOR Flash��������
* �� ��: uint32_t addr Ҫ������������ʼ��ַ
* �� ��: uint32_t 0 �����ɹ� 1 ������ʱ
* ע������: MX29LV128DB ǰ8����Ϊ8K����255����Ϊ64K MX29LV128DT ǰ255����Ϊ64K����8����Ϊ8K
******************************************************************************************************************************************/
uint32_t NORFL_SectorErase(uint32_t addr)
{
uint32_t res;
NORFLC->ADDR = addr;
NORFLC->CMD = (NORFL_CMD_SECTOR_ERASE << NORFLC_CMD_CMD_Pos);
while (((NORFLC->IF & NORFLC_IF_FINISH_Msk) == 0) &&
((NORFLC->IF & NORFLC_IF_TIMEOUT_Msk) == 0)) __NOP();
if (NORFLC->IF & NORFLC_IF_FINISH_Msk) res = 0;
else res = 1;
NORFLC->IF = NORFLC_IF_FINISH_Msk | NORFLC_IF_TIMEOUT_Msk;
return res;
}
/******************************************************************************************************************************************
* ��������: NORFL_Write()
* ����˵��: NOR Flashд
* �� ��: uint32_t addr ����Ҫд��ĵ�ַ
* uint32_t data Ҫд�������
* �� ��: uint32_t 0 д��ɹ� 1 д�볬ʱ
* ע������: Ӳ�����ӣ�������Ϊ16λʱ������д�룻������Ϊ8λʱ���ֽ�д��
******************************************************************************************************************************************/
uint32_t NORFL_Write(uint32_t addr, uint32_t data)
{
uint32_t res;
NORFLC->ADDR = addr;
NORFLC->CMD = (NORFL_CMD_PROGRAM << NORFLC_CMD_CMD_Pos) | (data << NORFLC_CMD_DATA_Pos);
while (((NORFLC->IF & NORFLC_IF_FINISH_Msk) == 0) &&
((NORFLC->IF & NORFLC_IF_TIMEOUT_Msk) == 0)) __NOP();
if (NORFLC->IF & NORFLC_IF_FINISH_Msk) res = 0;
else res = 1;
NORFLC->IF = NORFLC_IF_FINISH_Msk | NORFLC_IF_TIMEOUT_Msk;
return res;
}
/******************************************************************************************************************************************
* ��������: NORFL_Read()
* ����˵��: NOR Flash��
* �� ��: uint32_t addr ����Ҫ�����ĵ�ַ
* �� ��: uint32_t ����������
* ע������: Ӳ�����ӣ�������Ϊ16λʱ�����ֶ�����������Ϊ8λʱ���ֽڶ���
******************************************************************************************************************************************/
uint32_t NORFL_Read(uint32_t addr)
{
NORFLC->ADDR = addr;
NORFLC->CMD = (NORFL_CMD_READ << NORFLC_CMD_CMD_Pos);
return (NORFLC->CMD & NORFLC_CMD_DATA_Msk);
}
/******************************************************************************************************************************************
* ��������: NORFL_ReadID()
* ����˵��: NOR Flash��ID
* �� ��: uint32_t id_addr ID��ַ���˲�����оƬ��صģ�ÿ��оƬ����ͬ
* �� ��: uint16_t ��ȡ����ID
* ע������: ��
******************************************************************************************************************************************/
uint16_t NORFL_ReadID(uint32_t id_addr)
{
uint16_t id;
NORFLC->CMD = (NORFL_CMD_AUTO_SELECT << NORFLC_CMD_CMD_Pos);
NORFLC->ADDR = id_addr;
NORFLC->CMD = (NORFL_CMD_READ << NORFLC_CMD_CMD_Pos);
id = NORFLC->CMD & NORFLC_CMD_DATA_Msk;
NORFLC->CMD = (NORFL_CMD_RESET << NORFLC_CMD_CMD_Pos); // �˳�ID��ȡģʽ
return id;
}
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