188 lines
7.2 KiB
C
188 lines
7.2 KiB
C
/******************************************************************************************************************************************
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* 文件名称: SWM320_norflash.c
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* 功能说明: SWM320单片机的NOR Flash驱动程序
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* 技术支持: http://www.synwit.com.cn/e/tool/gbook/?bid=1
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* 注意事项:
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* 版本日期: V1.1.0 2017年10月25日
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* 升级记录:
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*
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*
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*******************************************************************************************************************************************
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* @attention
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*
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* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS WITH CODING INFORMATION
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* REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME. AS A RESULT, SYNWIT SHALL NOT BE HELD LIABLE
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* FOR ANY DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE CONTENT
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* OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING INFORMATION CONTAINED HEREIN IN CONN-
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* -ECTION WITH THEIR PRODUCTS.
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*
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* COPYRIGHT 2012 Synwit Technology
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*******************************************************************************************************************************************/
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#include "SWM320.h"
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#include "SWM320_norflash.h"
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/******************************************************************************************************************************************
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* 函数名称: NORFL_Init()
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* 功能说明: NOR Flash控制器初始化
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* 输 入: NORFL_InitStructure * initStruct 包含NOR Flash控制器相关设定值的结构体
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* 输 出: 无
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* 注意事项: 无
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******************************************************************************************************************************************/
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void NORFL_Init(NORFL_InitStructure *initStruct)
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{
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uint32_t i;
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// 配置SRAM前需要刷新下SDRAM控制器
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do
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{
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SYS->CLKEN |= (1 << SYS_CLKEN_SDRAM_Pos);
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while (SDRAMC->REFDONE == 0)
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;
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SDRAMC->REFRESH &= ~(1 << SDRAMC_REFRESH_EN_Pos);
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for (i = 0; i < 1000; i++)
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__NOP();
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SYS->CLKEN &= ~(1 << SYS_CLKEN_SDRAM_Pos);
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} while (0);
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SYS->CLKEN |= (1 << SYS_CLKEN_NORFL_Pos);
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NORFLC->CR = ((initStruct->DataWidth == 8 ? 1 : 0) << NORFLC_CR_BYTEIF_Pos) |
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(initStruct->WELowPulseTime << NORFLC_CR_WRTIME_Pos) |
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(initStruct->OEPreValidTime << NORFLC_CR_RDTIME_Pos);
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NORFLC->IE = 3;
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NORFLC->IF = 3; // 清除中断标志
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if (initStruct->OperFinishIEn)
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NORFLC->IM &= ~(1 << NORFLC_IM_FINISH_Pos);
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else
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NORFLC->IM |= (1 << NORFLC_IM_FINISH_Pos);
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if (initStruct->OperTimeoutIEn)
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NORFLC->IM &= ~(1 << NORFLC_IM_TIMEOUT_Pos);
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else
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NORFLC->IM |= (1 << NORFLC_IM_TIMEOUT_Pos);
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}
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/******************************************************************************************************************************************
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* 函数名称: NORFL_ChipErase()
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* 功能说明: NOR Flash整片擦除
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* 输 入: 无
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* 输 出: uint32_t 0 擦除成功 1 擦除超时
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* 注意事项: 无
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******************************************************************************************************************************************/
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uint32_t NORFL_ChipErase(void)
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{
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uint32_t res;
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NORFLC->CMD = (NORFL_CMD_CHIP_ERASE << NORFLC_CMD_CMD_Pos);
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while (((NORFLC->IF & NORFLC_IF_FINISH_Msk) == 0) &&
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((NORFLC->IF & NORFLC_IF_TIMEOUT_Msk) == 0))
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__NOP();
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if (NORFLC->IF & NORFLC_IF_FINISH_Msk)
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res = 0;
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else
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res = 1;
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NORFLC->IF = NORFLC_IF_FINISH_Msk | NORFLC_IF_TIMEOUT_Msk;
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return res;
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}
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/******************************************************************************************************************************************
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* 函数名称: NORFL_SectorErase()
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* 功能说明: NOR Flash扇区擦除
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* 输 入: uint32_t addr 要擦除扇区的起始地址
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* 输 出: uint32_t 0 擦除成功 1 擦除超时
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* 注意事项: MX29LV128DB 前8扇区为8K、后255扇区为64K MX29LV128DT 前255扇区为64K、后8扇区为8K
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******************************************************************************************************************************************/
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uint32_t NORFL_SectorErase(uint32_t addr)
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{
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uint32_t res;
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NORFLC->ADDR = addr;
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NORFLC->CMD = (NORFL_CMD_SECTOR_ERASE << NORFLC_CMD_CMD_Pos);
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while (((NORFLC->IF & NORFLC_IF_FINISH_Msk) == 0) &&
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((NORFLC->IF & NORFLC_IF_TIMEOUT_Msk) == 0))
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__NOP();
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if (NORFLC->IF & NORFLC_IF_FINISH_Msk)
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res = 0;
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else
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res = 1;
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NORFLC->IF = NORFLC_IF_FINISH_Msk | NORFLC_IF_TIMEOUT_Msk;
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return res;
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}
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/******************************************************************************************************************************************
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* 函数名称: NORFL_Write()
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* 功能说明: NOR Flash写
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* 输 入: uint32_t addr 数据要写入的地址
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* uint32_t data 要写入的数据
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* 输 出: uint32_t 0 写入成功 1 写入超时
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* 注意事项: 硬件连接，数据线为16位时，半字写入；数据线为8位时，字节写入
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******************************************************************************************************************************************/
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uint32_t NORFL_Write(uint32_t addr, uint32_t data)
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{
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uint32_t res;
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NORFLC->ADDR = addr;
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NORFLC->CMD = (NORFL_CMD_PROGRAM << NORFLC_CMD_CMD_Pos) | (data << NORFLC_CMD_DATA_Pos);
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while (((NORFLC->IF & NORFLC_IF_FINISH_Msk) == 0) &&
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((NORFLC->IF & NORFLC_IF_TIMEOUT_Msk) == 0))
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__NOP();
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if (NORFLC->IF & NORFLC_IF_FINISH_Msk)
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res = 0;
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else
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res = 1;
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NORFLC->IF = NORFLC_IF_FINISH_Msk | NORFLC_IF_TIMEOUT_Msk;
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return res;
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}
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/******************************************************************************************************************************************
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* 函数名称: NORFL_Read()
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* 功能说明: NOR Flash读
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* 输 入: uint32_t addr 数据要读出的地址
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* 输 出: uint32_t 读出的数据
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* 注意事项: 硬件连接，数据线为16位时，半字读出；数据线为8位时，字节读出
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******************************************************************************************************************************************/
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uint32_t NORFL_Read(uint32_t addr)
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{
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NORFLC->ADDR = addr;
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NORFLC->CMD = (NORFL_CMD_READ << NORFLC_CMD_CMD_Pos);
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return (NORFLC->CMD & NORFLC_CMD_DATA_Msk);
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}
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/******************************************************************************************************************************************
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* 函数名称: NORFL_ReadID()
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* 功能说明: NOR Flash读ID
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* 输 入: uint32_t id_addr ID地址，此参数是芯片相关的，每种芯片都不同
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* 输 出: uint16_t 读取到的ID
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* 注意事项: 无
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******************************************************************************************************************************************/
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uint16_t NORFL_ReadID(uint32_t id_addr)
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{
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uint16_t id;
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NORFLC->CMD = (NORFL_CMD_AUTO_SELECT << NORFLC_CMD_CMD_Pos);
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NORFLC->ADDR = id_addr;
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NORFLC->CMD = (NORFL_CMD_READ << NORFLC_CMD_CMD_Pos);
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id = NORFLC->CMD & NORFLC_CMD_DATA_Msk;
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NORFLC->CMD = (NORFL_CMD_RESET << NORFLC_CMD_CMD_Pos); // 退出ID读取模式
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return id;
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}
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