int sram_load_segment ( int seg )
{
int a;
char path[PATH_MAX + 1];
FILE *f = sram_open(seg, "rb", path);
DEBUGPRINT("MEM: SRAM: loading SRAM segment %02Xh from file %s" NL, seg, path);
if (!f) {
ERROR_WINDOW("Cannot open file for loading SRAM segment %02Xh because of file I/O error: %s\nFile name was: %s", seg, ERRSTR(), path);
return 1;
}
a = fread(memory + (seg << 14), 0x4000, 1, f);
if (a != 1)
ERROR_WINDOW("Cannot load SRAM segment %02Xh because of file I/O error: %s\nFile name was: %s", seg, ERRSTR(), path);
fclose(f);
return a != 1;
}
int sram_save_segment ( int seg )
{
int a;
char path[PATH_MAX + 1];
FILE *f = sram_open(seg, "wb", path);
DEBUGPRINT("MEM: SRAM: saving SRAM segment %02Xh to file %s" NL, seg, path);
if (!f) {
ERROR_WINDOW("Cannot create file for saving SRAM segment %02Xh because of file I/O error: %s\nFile name was: %s", seg, ERRSTR(), path);
return 1;
}
a = fwrite(memory + (seg << 14), 0x4000, 1, f);
if (a != 1)
ERROR_WINDOW("Cannot save SRAM segment %02Xh because of file I/O error: %s\nFile name was: %s", seg, ERRSTR(), path);
fclose(f);
return a != 1;
}
int main(int argc, char *argv[])
{
off_t offset;
uint16_t ored;
uint16_t val;
int i;
int n;
int stepsz;
int write;
int error;
if (argc < 4) {
fprintf(stderr, "Usage: sram <r/w> <n> <stepsz> [orv]\n");
exit(1);
}
if (argc == 5)
ored = (int16_t)strtol(argv[4], NULL, 16);
else
ored = 0;
n = atoi(argv[2]);
stepsz = atoi(argv[3]);
if (*argv[1] == 'w') {
write = 1;
printf("Write mode enabled \n");
} else {
write = 0;
printf("Read mode enabled \n");
}
if ((error = sram_open())) {
perror("sram_open");
exit(1);
}
printf("SRAM opened!\n");
sleep(1);
for (i = 0; i < n; i++) {
offset = i * (stepsz <<1);
if (write) {
val = (uint16_t)((i<<1) | ored);
if ((error = sram_write(offset, &val, sizeof(val)))) {
fprintf(stderr, "Error during sram_write\n");
exit(1);
}
} else {
if ((error = sram_read(offset, &val, sizeof(val)))) {
fprintf(stderr, "Error during sram_read\n");
exit(1);
}
printf("@%#lx: %hx\n", (unsigned long)offset, val);
}
sleep(1);
}
sleep(1);
sram_close();
return 0;
}
