int main(void)
{
SetupHardware();
sei();
// Initialize the USB, and then wait for the host to set configuration.
// If the Teensy is powered without a PC connected to the USB port,
// this will wait forever.
while (USB_DeviceState != DEVICE_STATE_Configured) /* wait */
USB_USBTask();
//configure all i/o lines (and set tristate=low)
//nor_initports();
nand_initports();
// Wait an extra second for the PC's operating system to load drivers
// and do whatever it does to actually be ready for input
_delay_ms(1000);
usbio_initbuffers();
int16_t command = -1;
uint8_t nand_id = 0;
uint16_t nand_block = 0;
while (1) {
USB_USBTask();
while (USB_DeviceState == DEVICE_STATE_Configured) { // is user still connected?
command = usbio_get_byte();
if (command == -1) continue;
switch (command) {
case CMD_GETVERSION:
usbio_set_byte(NANDORWAY_MAJOR_VERSION, 0);
usbio_set_byte(NANDORWAY_MINOR_VERSION, 0);
usbio_set_byte(NANDORWAY_BUILD_VERSION, 1);
break;
case CMD_PING:
usbio_set_byte(0x42, 0);
usbio_set_byte(0xbd, 1);
break;
case CMD_BOOTLOADER:
bootloader();
break;
case CMD_SPEEDTEST_READ:
speedtest_send();
break;
case CMD_SPEEDTEST_WRITE:
speedtest_receive();
break;
case CMD_IO_LOCK:
nor_initports();
break;
case CMD_IO_RELEASE:
nor_releaseports();
break;
case CMD_NOR_ID:
nor_id();
break;
case CMD_NOR_RESET:
nor_reset();
break;
case CMD_NOR_ERASE_SECTOR:
nor_erase_sector();
break;
case CMD_NOR_ERASE_CHIP:
nor_erase_chip();
break;
case CMD_NOR_ADDRESS_SET:
nor_address_set(usbio_get_byte(), usbio_get_byte(), usbio_get_byte());
break;
case CMD_NOR_ADDRESS_INCREMENT:
nor_address_increment(1);
break;
case CMD_NOR_ADDRESS_INCREMENT_ENABLE:
nor_address_increment_set(1);
break;
case CMD_NOR_ADDRESS_INCREMENT_DISABLE:
nor_address_increment_set(0);
break;
case CMD_NOR_2ND_DIE_ENABLE:
nor_2nd_die_offset(0x40); //A22=HIGH for Samsung K8Q2815
break;
case CMD_NOR_2ND_DIE_DISABLE:
nor_2nd_die_offset(0x00); //A22=LOW for Samsung K8Q2815
break;
case CMD_NOR_READ_WORD:
nor_read(NOR_BSS_WORD, 1);
break;
case CMD_NOR_READ_BLOCK_4KB:
nor_read(NOR_BSS_4, 1);
break;
case CMD_NOR_READ_BLOCK_8KB:
nor_read(NOR_BSS_8, 1);
break;
case CMD_NOR_READ_BLOCK_64KB:
nor_read(NOR_BSS_64, 1);
break;
case CMD_NOR_READ_BLOCK_128KB:
nor_read(NOR_BSS_128, 1);
break;
case CMD_NOR_WRITE_WORD:
nor_write_word();
break;
case CMD_NOR_WRITE_BLOCK_WORD:
nor_write_block(NOR_PRG_MODE_WORD);
break;
case CMD_NOR_WRITE_BLOCK_UBM:
nor_write_block(NOR_PRG_MODE_UBM);
break;
case CMD_NOR_WRITE_BLOCK_WBP:
nor_write_block(NOR_PRG_MODE_WBP);
break;
case CMD_NAND_ID:
switch (nand_id) {
case 0:
if (init_nand(&nand0) == 1) {
//24 bytes
usbio_set_byte(nand0.info.maker_code, 0);
usbio_set_byte(nand0.info.device_code, 0);
usbio_set_byte((nand0.info.page_size >> 24) & 0xFF, 0);
usbio_set_byte((nand0.info.page_size >> 16) & 0xFF, 0);
usbio_set_byte((nand0.info.page_size >> 8) & 0xFF, 0);
usbio_set_byte(nand0.info.page_size & 0xFF, 0);
usbio_set_byte(nand0.info.oob->size, 0);
usbio_set_byte((nand0.info.block_size >> 24) & 0xFF, 0);
usbio_set_byte((nand0.info.block_size >> 16) & 0xFF, 0);
usbio_set_byte((nand0.info.block_size >> 8) & 0xFF, 0);
usbio_set_byte(nand0.info.block_size & 0xFF, 0);
usbio_set_byte((nand0.info.num_blocks >> 24) & 0xFF, 0);
usbio_set_byte((nand0.info.num_blocks >> 16) & 0xFF, 0);
usbio_set_byte((nand0.info.num_blocks >> 8) & 0xFF, 0);
usbio_set_byte(nand0.info.num_blocks & 0xFF, 0);
usbio_set_byte(nand0.info.num_planes, 0);
usbio_set_byte((nand0.info.plane_size >> 56) & 0xFF, 0);
usbio_set_byte((nand0.info.plane_size >> 48) & 0xFF, 0);
usbio_set_byte((nand0.info.plane_size >> 40) & 0xFF, 0);
usbio_set_byte((nand0.info.plane_size >> 32) & 0xFF, 0);
usbio_set_byte((nand0.info.plane_size >> 24) & 0xFF, 0);
usbio_set_byte((nand0.info.plane_size >> 16) & 0xFF, 0);
usbio_set_byte((nand0.info.plane_size >> 8) & 0xFF, 0);
usbio_set_byte(nand0.info.plane_size & 0xFF, 1);
}
else {
for (uint8_t i = 0; i < 23; ++i)
usbio_set_byte(0xFF, 0);
usbio_set_byte(0xFF, 1);
}
break;
case 1:
if (init_nand(&nand1) == 1) {
//24 bytes
usbio_set_byte(nand1.info.maker_code, 0);
usbio_set_byte(nand1.info.device_code, 0);
usbio_set_byte((nand1.info.page_size >> 24) & 0xFF, 0);
usbio_set_byte((nand1.info.page_size >> 16) & 0xFF, 0);
usbio_set_byte((nand1.info.page_size >> 8) & 0xFF, 0);
usbio_set_byte(nand1.info.page_size & 0xFF, 0);
usbio_set_byte(nand1.info.oob->size, 0);
usbio_set_byte((nand1.info.block_size >> 24) & 0xFF, 0);
usbio_set_byte((nand1.info.block_size >> 16) & 0xFF, 0);
usbio_set_byte((nand1.info.block_size >> 8) & 0xFF, 0);
usbio_set_byte(nand1.info.block_size & 0xFF, 0);
usbio_set_byte((nand1.info.num_blocks >> 24) & 0xFF, 0);
usbio_set_byte((nand1.info.num_blocks >> 16) & 0xFF, 0);
usbio_set_byte((nand1.info.num_blocks >> 8) & 0xFF, 0);
usbio_set_byte(nand1.info.num_blocks & 0xFF, 0);
usbio_set_byte(nand1.info.num_planes, 0);
usbio_set_byte((nand1.info.plane_size >> 56) & 0xFF, 0);
usbio_set_byte((nand1.info.plane_size >> 48) & 0xFF, 0);
usbio_set_byte((nand1.info.plane_size >> 40) & 0xFF, 0);
usbio_set_byte((nand1.info.plane_size >> 32) & 0xFF, 0);
usbio_set_byte((nand1.info.plane_size >> 24) & 0xFF, 0);
usbio_set_byte((nand1.info.plane_size >> 16) & 0xFF, 0);
usbio_set_byte((nand1.info.plane_size >> 8) & 0xFF, 0);
usbio_set_byte(nand1.info.plane_size & 0xFF, 1);
}
else {
for (uint8_t i = 0; i < 23; ++i)
usbio_set_byte(0xFF, 0);
usbio_set_byte(0xFF, 1);
}
break;
default:
break;
}
void initports()
{
nand_initports(&nand0);
nand_initports(&nand1);
}
