-/*****************************************************************************/
-/* THIS SAMPLE CODE IS PROVIDED AS IS AND IS SUBJECT TO ALTERATIONS. FUJITSU */
-/* MICROELECTRONICS ACCEPTS NO RESPONSIBILITY OR LIABILITY FOR ANY ERRORS OR */
-/* ELIGIBILITY FOR ANY PURPOSES. */
-/* (C) Fujitsu Microelectronics Europe GmbH */
-/*****************************************************************************/
-
#include "flash.h"
#include "mb91465k.h"
-static unsigned int IFlag;
-
-#pragma section CODE=IRAM,attr=CODE
-
-
void FLASH_PrepareWriteHalfWordMode()
{
/* Set FLASH Access Mode via BootROM Routine */
FMWT_WTC = 4;
}
-
-unsigned char FLASH_SectorErase(unsigned int secadr)
+unsigned char FLASH_ChipErase(void)
{
unsigned char flag = 0;
- volatile unsigned int value = 0;
-
- /* Disable Interrupts if necessary */
- IFlag = FLASH_SaveDisableInterruptFlag();
- /* Set FLASH access mode to 16Bit Write Mode */
+ /*Set FLASH access mode to 16Bit Write Mode*/
FLASH_PrepareWriteHalfWordMode();
-
- secadr |= 0x0003;
-
- /* Start FLASH Sector Erase Sequence */
+
+ /*Start FLASH Sector Erase Sequence*/
*hseq_1 = 0x00AA;
*hseq_2 = 0x0055;
*hseq_1 = 0x0080;
*hseq_1 = 0x00AA;
*hseq_2 = 0x0055;
- *(unsigned short int *)secadr = 0x0030;
-
- /* Wait for the Auto Algorithm to start */
- while( !( *(unsigned short int *)secadr & SETIMR ) )
- {
- /* Feed the Hardware Watchdog */
- HWWD_CL = 0;
-
- /* Check for Pending Interrupts */
- if( FLASH_CheckPendingInterrupt() )
- {
- /* Wait for Sector Erase Suspend */
- FLASH_SuspendSectorErase(secadr);
-
- /* Set FLASH access mode to 32Bit Read Mode */
- FLASH_PrepareReadMode();
-
- /* Restore the original Interrupt Flag */
- FLASH_RestoreInterruptFlag(IFlag);
-
- /* Keep on checking for pending Interrupts */
- while( FLASH_CheckPendingInterrupt() ) HWWD_CL = 0;
-
- /* Disable Interrupts if necessary */
- IFlag = FLASH_SaveDisableInterruptFlag();
-
- /* Set FLASH access mode to 16Bit Write Mode */
- FLASH_PrepareWriteHalfWordMode();
-
- /* Sector Erase Resume */
- FLASH_ResumeSectorErase(secadr);
- }
- }
+ *hseq_1 = 0x0010;
- /* Wait for the Auto Algorithm to finish */
- while( flag == 0 )
- {
+ /*Wait for the Auto Algorithm to finish*/
+ while( flag == 0 ) {
/* Feed Hardware Watchdog */
HWWD_CL = 0;
- /* Check for Pending Interrupts */
- if( FLASH_CheckPendingInterrupt() )
- {
- /* Sector Erase Suspend */
- FLASH_SuspendSectorErase(secadr);
-
- /* Set FLASH access mode to 32Bit Read Mode */
- FLASH_PrepareReadMode();
-
- /* Restore the original Interrupt Flag */
- FLASH_RestoreInterruptFlag(IFlag);
-
- /* Keep on checking for pending Interrupts */
- while( FLASH_CheckPendingInterrupt() ) HWWD_CL = 0;
-
- /* Disable Interrupts if necessary */
- IFlag = FLASH_SaveDisableInterruptFlag();
-
- /* Set FLASH access mode to 16Bit Write Mode */
- FLASH_PrepareWriteHalfWordMode();
-
- /* Sector Erase Resume */
- FLASH_ResumeSectorErase(secadr);
- }
-
-
- /* Check the Hardware Sequence Flags */
- if( ( *(unsigned short int *)secadr /* value */ & DPOLL ) )
- {
+ if(*hseq_1 & DPOLL) {
flag = 1;
}
- if( ( *(unsigned short int *)secadr /* value */ & TLOVER ) )
- {
- if( ( *(unsigned short int *)secadr /* value */ & DPOLL ) )
- {
+ if(*hseq_1 & TLOVER) {
+ if(*hseq_1 & DPOLL) {
flag = 1;
}
- else
- {
- /* Reset FLASH */
- FLASH_ReadReset();
-
+ else {
+ /*Reset FLASH (keep in mind 16Bit access to FLASH)*/
+ *hseq_1 = 0x00F0; // Keep in Mind (16Bit access)
+
flag = 2;
}
}
}
-
- /* Restore the original Interrupt Flag */
- FLASH_RestoreInterruptFlag(IFlag);
-
- /* Set FLASH access mode to 32Bit Read Mode */
+ /*Set FLASH access mode to 32Bit Read Mode*/
FLASH_PrepareReadMode();
-
+
return flag;
}
+//maybe implement this check too!
+#if 0
unsigned char FLASH_SectorBlankCheck(unsigned int secaddr, unsigned int size)
{
unsigned int count;
return 1;
}
+#endif
unsigned char FLASH_WriteHalfWord(unsigned int adr, unsigned short int data)
{
unsigned char flag = 0;
- /* Disable Interrupts if necessary */
- IFlag = FLASH_SaveDisableInterruptFlag();
-
/* Set FLASH access mode to 16Bit Write Mode */
FLASH_PrepareWriteHalfWordMode();
/* Set FLASH access mode to 32Bit Read Mode */
FLASH_PrepareReadMode();
- /* Restore the original Interrupt Flag */
- FLASH_RestoreInterruptFlag(IFlag);
-
return flag;
}
-
unsigned char FLASH_ReadReset()
{
*hseq_1 = 0x00F0;
return 1;
}
-#pragma asm
-_FLASH_SaveDisableInterruptFlag:
- STM0 (R0)
- MOV PS,R4
- LDI #0x00000010,R0
- AND R0,R4 ; Store Original Flag
- ANDCCR #0xFFFFFFEF ; Clear Interrupt Flag
- LDM0 (R0)
- RET
-#pragma endasm
-
-
-#pragma asm
-_FLASH_RestoreInterruptFlag:
- STM0 (R0)
- MOV PS,R0 ; Get current PS
- OR R4,R0 ; Set Flag as saved
- MOV R0,PS ; Write back PS
- LDM0 (R0)
- RET
-#pragma endasm
-
-
-unsigned char FLASH_SuspendSectorErase(unsigned int secaddr)
-{
- /* Write Sector Erase Suspend Command */
- *(volatile unsigned short int *)secaddr = 0x00B0;
-
- /* Wait for the FLASH macro to suspend sector erase */
- while(!(*(unsigned short int *)secaddr /* value */ & DPOLL) && (*(unsigned short int *)secaddr /* value */ & SETIMR))
- {
- HWWD_CL=0;
- }
-
- return 1;
-}
-
-unsigned char FLASH_ResumeSectorErase(unsigned int secaddr)
-{
- /* Write the Sector Erase Resume Command */
- *(volatile unsigned short int *)secaddr = 0x0030;
-
- /* Wait for the FLASH Macro to resume sector erase */
- while((*(unsigned short int *)secaddr /*value */ & DPOLL) && !(*(unsigned short int *)secaddr /*value */ & SETIMR))
- {
- HWWD_CL=0;
- }
-
- return 1;
-}
-
unsigned char FLASH_CheckPendingInterrupt()
{
/* Poll for Pending Interrupts which are needed here */
/* and return 1 when an Interrupt is pending */
return 0;
}
+
projects / pyfrprog.git / blobdiff