s29gl.rar_The Peripheral_s29gl

/** ****************************************************************************** * @file NorFlash.c * @author YqZhao * @version V1.0.0 * @date 26-April-2013 * @brief This file provides firmware functions to manage the following * functionalities of the NorFlash FSMC peripheral: * - Initialization FSMC bus of NorFlash * - Write datas of the NorFlash * - Read datas of the NorFlash * - Read ID * - Erase the section of the NorFlash * * @verbatim * * =================================================================== * How to use this driver * =================================================================== * 1. FSMC pins configuration about NorFlash in User.h * * 2. Initialise and configure the NorFlash using S29glInit * PLS refer to the stm32f2xx_fsmc.c file * * 3. Erase the desired section using s29glSectorErase if writing data needed * * * 4. Write the desired data using s29glWrite. * * 5. Read the desired data using s29glRead. * * 6. If needed read the ID using S29gReadId. * @endverbatim * ****************************************************************************** * @attention * SectionNum Address ________ __________ 0 0x000000 ________| | ________ 16bits 1 0x020000 ________| | Data 2 0x040000 | | | | | | | | 255 0x1FE0000 ________| | |_________________ | * ****************************************************************************** */ #include "include.h" #ifndef WP_NORFLASH #define WP_NORFLASH PE_O.BitSet.v01 #endif #ifndef RESET_NORFLASH #define RESET_NORFLASH PE_O.BitSet.v01 #endif /******************************************************************************* Function: Nor Flash Erase Operation Param : sectorNum stands for the beigin of section sectorCount stans for how many sections need erase Return : NOR_Status NOR_SUCCESS = 0, // Stands for success NOR_ONGOING, // Stands for ongoing something NOR_ERROR, // Stands for error NOR_TIMEOUT // Stands for time out Comment : When need write data must erase the section respectively first *******************************************************************************/ NOR_Status s29glSectorErase( int sectorNum, int sectorCount) { int ii,jj; uint16_t wTemp1,wTemp2; volatile uint16_t* pFlash; unsigned int timeout; for ( ii = 0; ii < sectorCount; ii++ ) { pFlash = ( uint16_t * ) ( NOR_FLASH_START_ADDR+( sectorNum + ii ) * ( 128*1024 ) ); NOR_WRITE(ADDR_SHIFT(0x00), 0xf0);/* RESET ????*/ NOR_WRITE(ADDR_SHIFT(0x555),0xaa); NOR_WRITE(ADDR_SHIFT(0x2aa),0x55); NOR_WRITE(ADDR_SHIFT(0x555),0x80); NOR_WRITE(ADDR_SHIFT(0x555),0xaa); NOR_WRITE(ADDR_SHIFT(0x2aa),0x55); *pFlash = 0x30; wTemp1 = *pFlash & 0x40; timeout = 0xf000000; while ( 1 ) { FEED_DOG(); wTemp2 = *pFlash & 0x40; if ( wTemp1 == wTemp2 ) { break; } else { wTemp1 = wTemp2; } if ( timeout-- <= 0 ) { return ( NOR_TIMEOUT ); } } NOR_WRITE(ADDR_SHIFT(0x00), 0xf0f0);/* RESET ????*/ for ( jj = 0; jj < 128*1024/2; jj++ )/* Maybe too long time */ { if ( *pFlash != 0xffff ) { return ( NOR_ERROR ); } pFlash ++; } } return(NOR_SUCCESS); } /******************************************************************************* Function: Nor Flash Write Operation Param : address stands for the beigin of address buffer stans for the datas be written into the NorFlash length stans for how many bytes need to write NorFlash Return : NOR_Status NOR_SUCCESS = 0, // Stands for success NOR_ONGOING, // Stands for ongoing something NOR_ERROR, // Stands for error NOR_TIMEOUT // Stands for time out Comment : *******************************************************************************/ NOR_Status s29glWrite( uint32_t address, uint8_t * buffer, int length ) { uint16_t ii; uint32_t timeout; uint16_t *pBuffer=(uint16_t *)buffer; volatile uint16_t *pFlash; uint16_t wTemp1, wTemp2; pFlash =(uint16_t *)(NOR_FLASH_START_ADDR + address); for ( ii = 0; ii <(length>>1); ii++ ) { NOR_WRITE(ADDR_SHIFT(0x555),0xaa); NOR_WRITE(ADDR_SHIFT(0x2aa),0x55); NOR_WRITE(ADDR_SHIFT(0x555),0xa0); *pFlash = *pBuffer; wTemp1 = *pFlash & 0x40; timeout = 0x5000000; while ( 1 ) { FEED_DOG(); wTemp2 = *pFlash & 0x40; if ( wTemp1 == wTemp2 ) { break; } else { wTemp1 = wTemp2; } if ( timeout-- <= 0 ) { return ( NOR_TIMEOUT ); } } NOR_WRITE(ADDR_SHIFT(0x00), 0xf0); if ( *pFlash != *pBuffer ) { return ( NOR_ERROR ); } pFlash ++; pBuffer ++; } return (NOR_SUCCESS); } /******************************************************************************* Function: Nor Flash Read Operation Param : address stands for the beigin of address buffer stans for the datas to be read our of the NorFlash length stans for how many bytes need to read NorFlash Return : No Comment : *******************************************************************************/ void s29glRead(uint32_t address, uint8_t * buffer, int length ) { uint16_t *pBuffer=(uint16_t *)buffer; volatile uint16_t *pFlash; uint32_t ii; NOR_WRITE(ADDR_SHIFT(0x0555), 0x00AA); NOR_WRITE(ADDR_SHIFT(0x02AA), 0x0055); NOR_WRITE((NOR_FLASH_START_ADDR + address), 0x00F0); pFlash =(uint16_t *)(NOR_FLASH_START_ADDR + address); for( ii=0; ii<(length>>1); ii++) { *pBuffer++ = *pFlash++; } } /******************************************************************************* Function: Nor Flash initiation Operation Param : NOR_ID save the ID read form chip Return : No Comment : *******************************************************************************/ void S29gReadId(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 = *(vu16 *) ADDR_SHIFT(0x0000); NOR_ID->Device_Code1 = *(vu16 *) ADDR_SHI