void RDA_isr()
{
gets(Sstring);
if(pilha_rs232[0]==1) return;
if (!stricmp(Sstring,go))//go="DEBUG"
{
DEBUG=TRUE;
printf("DEBUG MODE ON \n\r");
disable_interrupts(INT_RDA);
return;
}
if (Sstring[0]==':')
{
pilha_rs232[0]=1; // |trans_pending|
pilha_rs232[1]=atoi_b16(&Sstring[1]); // | dest_adr |
pilha_rs232[2]=atoi_b16(&Sstring[3]); // | sub_dest_adr|
pilha_rs232[3]=atoi_b16(&Sstring[5]); // | source_adr |
pilha_rs232[4]=atoi_b16(&Sstring[7]); // |sub_source_adr|
pilha_rs232[5]=atoi_b16(&Sstring[9]); // | type |
pilha_rs232[6]=atoi_b16(&Sstring[11]); // | length(data)|
for (Saux=0;Saux<pilha_rs232[6];++Saux)// | data [0-5] |
{
pilha_rs232[7+Saux]=atoi_b16(&Sstring[13+2*Saux]);
}
}
}
void load_program(void)
{
int1 do_ACKLOD, done=FALSE;
int8 checksum, line_type;
int16 l_addr,h_addr=0;
int8 to;
int32 addr;
int8 dataidx, i, count;
int8 data[32];
int buffidx;
char buffer[BUFFER_LEN_LOD];
while (!done) // Loop until the entire program is downloaded
{
usb_task();
if(!usb_cdc_kbhit())
continue;
buffidx = 0; // Read into the buffer until 0x0D ('\r') is received or the buffer is full
to = 250; //250 milliseconds
do
{
if(!usb_cdc_kbhit())
{
delay_ms(1);
to--;
if(!to)
break;
}
else
to = 250;
i = usb_cdc_getc();
buffer[buffidx++] = i;
}while((i != 0x0D) && (i != 0x0A) && (buffidx <= BUFFER_LEN_LOD));
if(!to)
continue;
usb_cdc_putc(XOFF); // Suspend sender
do_ACKLOD = TRUE;
// Only process data blocks that start with ':'
if(buffer[0] == ':')
{
count = atoi_b16 (&buffer[1]); // Get the number of bytes from the buffer
// Get the lower 16 bits of address
l_addr = make16(atoi_b16(&buffer[3]),atoi_b16(&buffer[5]));
line_type = atoi_b16 (&buffer[7]);
addr = make32(h_addr,l_addr);
// If the line type is 1, then data is done being sent
if(line_type == 1)
{
done = TRUE;
}
else if((addr >= (int32)APPLICATION_START) && (addr < ((int32)0x300000)))
{
checksum = 0; // Sum the bytes to find the check sum value
for(i=1; i<(buffidx-3); i+=2)
checksum += atoi_b16 (&buffer[i]);
checksum = 0xFF - checksum + 1;
if(checksum != atoi_b16 (&buffer[buffidx-3]))
do_ACKLOD = FALSE;
else
{
if(line_type == 0) {
// Loops through all of the data and stores it in data
// The last 2 bytes are the check sum, hence buffidx-3
for(i = 9,dataidx=0; i < buffidx-3; i += 2)
data[dataidx++]=atoi_b16(&buffer[i]);
rom_w(addr, data, count);
}
else if(line_type == 4)
h_addr = make16(atoi_b16(&buffer[9]), atoi_b16(&buffer[11]));
}
}
}
if(do_ACKLOD)
usb_cdc_putc (ACKLOD);
usb_cdc_putc(XON);
}
usb_cdc_putc(ACKLOD);
usb_cdc_putc(XON);
delay_ms(2000); //give time for packet to flush
reset_cpu();
}
