// ---------------------------------------------------------------------------
// Transfiere un buffer a la memoria FLASH
// ---------------------------------------------------------------------------
//
void SPI_TransferMsg ( UINT8 HdrLen, UINT8 DataLen, UINT8* MsgPtr )
{
UINT8 TmpData;
UINT8 * HdrPtr;
HdrPtr = SpiBuf;
flash_cs_l();
while(HdrLen){
REFRESH_WATCHDOG;
TmpData = *HdrPtr;
*HdrPtr = flash_spi(TmpData);
HdrPtr++;
HdrLen--;
}
while(DataLen){
REFRESH_WATCHDOG;
TmpData = *MsgPtr;
*MsgPtr = flash_spi(TmpData);
MsgPtr++;
DataLen--;
}
flash_cs_h();
}
void program_page(int page) {
int flash_addr = page_to_flash(page);
unsigned int i;
unsigned char data;
unsigned char data1;
flash_spi(ARRAY_READ);
flash_spi((flash_addr >> 8) & 0xff);
flash_spi(flash_addr & 0xff);
for (i=0; i < 5; i++) {
flash_spi(0);
}
for (i = 0; i < 128; i++) {
data = flash_spi(0);
data1 = flash_spi(0);
bg_spi(0x40);
bg_spi(0x00);
bg_spi(i);
bg_spi(data);
bg_spi(0x48);
bg_spi(0x00);
bg_spi(i);
bg_spi(data1);
}
bg_spi(0x4c);
bg_spi((page >> 1) & 0xff);
bg_spi((page << 7) & 0xff );
bg_spi(0x00);
}
// read the parameters from the flash; right now just reads the length of the
// program.
int read_params() {
int i;
int retval;
flash_cmd(ARRAY_READ, 0,0, 4);
/* flash_spi(ARRAY_READ);
flash_spi(0);
flash_spi(0);
flash_spi(4);*/
for (i=0; i < 4; i++) {
flash_spi(0);
}
retval = flash_spi(0) & 0xff;
retval += (flash_spi(0) << 8);
return retval;
}
int error_code(short errno) {
pulse_flash_cs();
flash_cmd(PAGE_TO_BUFFER_XFER,0,0,0);
pulse_flash_cs();
flash_cmd(BUFFER_WRITE, 0,0,8);
flash_spi(errno & 0xff);
flash_spi((errno >> 8) & 0xff);
return 1;
}
char program_enable() {
int ntries, end,i;
unsigned char foo;
unsigned char resp[6];
#ifdef FULLPC
__sda_string_[0] = 0;
__mosi_string_[0] = 0;
#endif
MAKE_BIG_GUY_RESET_OUTPUT();
CLR_SCK_PIN();
CLR_BIG_GUY_RESET_PIN();
wait();
wait();
i = 0;
pulse_flash_cs();
for (end=0; end < 5000; end++) {
wait();
}
for(end = 0, ntries = 32; (end == 0) && (ntries >0); ntries--) {
bg_spi(0xac);
bg_spi(0x53);
foo = bg_spi(0x00);
if (foo == 0x53) {
end = 1;
} else {
CLR_SCK_PIN();
wait();
wait();
SET_SCK_PIN();
wait();
wait();
}
bg_spi(0x00);
if (i <6)
resp[i++] = foo;
}
if (end == 0) {
flash_cmd(BUFFER_WRITE, 0,0,10);
for (i=0; i < 6; i++)
flash_spi(resp[i]);
pulse_flash_cs();
wait_ms(20);
return 0;
}
printf("%s\n", __mosi_string_);
printf("%s\n", __sda_string_);
return 1;
}
void flash_cmd(char cmd, char p1, char p2, char p3) {
flash_spi(cmd);
flash_spi(p1);
flash_spi(p2);
flash_spi(p3);
}
