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/* */
#include <string.h>
#include "stm8.h"
#include "flash.h"
// Lock, unklock
void
flash_punlock(void)
{
FLASH->pukr= 0x56;
FLASH->pukr= 0xae;
}
void
flash_dunlock(void)
{
FLASH->pukr= 0xae;
FLASH->pukr= 0x56;
}
void
flash_plock(void)
{
FLASH->iapsr&= ~0x02;
}
void
flash_dlock(void)
{
FLASH->iapsr&= ~0x08;
}
void
flash_lock(void)
{
FLASH->iapsr&= ~0x0a;
}
// Set programing mode
void
flash_byte_mode(void)
{
FLASH->cr2= 0;
#if (DEVICE & DEV_STM8SAF)
FLASH->ncr2= 0xff;
#endif
}
void
flash_word_mode(void)
{
FLASH->cr2= 0x40;
#if (DEVICE & DEV_STM8SAF)
FLASH->ncr2= 0xbf;
#endif
}
void
flash_erase_mode(void)
{
FLASH->cr2= 0x20;
#if (DEVICE & DEV_STM8SAF)
FLASH->ncr2= 0xdf;
#endif
}
// Check the result
uint8_t
flash_wait_finish(void)
{
unsigned long int timeout= 0xfffff;
//volatile
uint8_t r;
r= FLASH->iapsr;
while (((r & 0x05) == 0) &&
(timeout != 0))
{
timeout--;
r= FLASH->iapsr;
}
if (r & 0x04)
return 0;
if (r & 0x01)
return 1;
if (timeout == 0)
return 2;
return 3;
}
uint8_t
flash_erase_fn(volatile uint8_t *addr, volatile uint8_t *iapsr)
{
volatile uint8_t r;
unsigned long timeout= 0xfffff;
flash_erase_mode();
*(addr++)= 0;
*(addr++)= 0;
*(addr++)= 0;
*(addr)= 0;
r= *iapsr;
while (((r & 0x05) == 0) &&
(timeout != 0))
{
timeout--;
r= *iapsr;
GPIOD->odr^= 1;
}
if (r & 0x04)
return 0;
if (r & 0x01)
return 1;
if (timeout == 0)
return 2;
return 3;
}
uint8_t flash_op_in_ram[120];
uint8_t
flash_erase(volatile uint8_t *addr, volatile uint8_t *iapsr)
{
uint8_t r;
typedef uint8_t (*ft)(volatile uint8_t *addr, volatile uint8_t *iapsr);
ft f= (ft)flash_op_in_ram;
memcpy(flash_op_in_ram, &flash_erase_fn, 119);
r= (*f)(addr, iapsr);
return r;
}
/* End of stm8.src/test/flash.c */
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