/*======================================================================
| FUNCTIONS
| =====================================================================*/
static void _blast_async(int handle, int txnlen, int iter)
{
double elapsed = 0;
byte[] noresult = new byte[1];
// Make a simple queue to just assert OE.
CheetahApi.ch_spi_queue_clear(handle);
CheetahApi.ch_spi_queue_oe(handle, (byte)1);
CheetahApi.ch_spi_batch_shift(handle, 0, noresult);
// Queue the batch which is a sequence of SPI packets
// (back-to-back) each of length 4.
CheetahApi.ch_spi_queue_clear(handle);
int i;
int count = 0;
byte[] data_out = new byte[4];
for (i = 0; i < txnlen; ++i)
{
CheetahApi.ch_spi_queue_ss(handle, 0x1);
data_out[0] = (byte)((count >> 24) & 0xff);
data_out[1] = (byte)((count >> 16) & 0xff);
data_out[2] = (byte)((count >> 8) & 0xff);
data_out[3] = (byte)((count >> 0) & 0xff);
++count;
CheetahApi.ch_spi_queue_array(handle, 4, data_out);
CheetahApi.ch_spi_queue_ss(handle, 0x0);
}
ulong start = _timeMillis();
// First, submit first batch
CheetahApi.ch_spi_async_submit(handle);
int n, ret;
for (n = 0; n < iter - 1; ++n)
{
// Submit another batch, while the previous one is in
// progress. The application may even clear the current
// batch queue and queue a different set of SPI
// transactions before submitting this batch
// asynchronously.
CheetahApi.ch_spi_async_submit(handle);
// The application can now perform some other functions
// while the Cheetah is both finishing the previous batch
// and shifting the current batch as well. In order to
// keep the Cheetah's pipe full, this entire loop must
// complete AND another batch must be submitted
// before the current batch completes.
CheetahApi.ch_sleep_ms(25);
// Collect the previous batch
ret = CheetahApi.ch_spi_async_collect(handle, 0, noresult);
elapsed = ((double)(_timeMillis() - start)) / 1000;
Console.Write("collected batch #{0:d3} in {1:f2} seconds\n",
n + 1, elapsed);
if (ret < 0)
{
Console.Write("status error: {0:s}\n",
CheetahApi.ch_status_string(ret));
}
Console.Out.Flush();
start = _timeMillis();
// The current batch is now shifting out on the SPI
// interface. The application can again do some more tasks
// here but this entire loop must finish so that a new
// batch is armed before the current batch completes.
CheetahApi.ch_sleep_ms(25);
}
// Collect batch the last batch
ret = CheetahApi.ch_spi_async_collect(handle, 0, noresult);
elapsed = ((double)(_timeMillis() - start)) / 1000;
Console.Write("collected batch #{0:d3} in {1:f2} seconds\n",
n + 1, elapsed);
if (ret < 0)
{
Console.Write("status error: {0:s}\n",
CheetahApi.ch_status_string(ret));
}
Console.Out.Flush();
}
static int _write(int handle, int addr, string binfile)
{
ulong start = _timeMicroseconds();
//Read bin file
BinaryReader br;
try
{
br = new BinaryReader(new FileStream(binfile,
FileMode.Open));
}
catch (IOException e)
{
Console.WriteLine(e.Message + "\n Cannot open file.");
return(-1);
}
int data_length = Convert.ToInt32(br.BaseStream.Length);
int data_pad_length = 1024 - data_length % 1024;
byte[] bin_data = new byte[data_length];
bin_data = br.ReadBytes(data_length);
byte[] data = new byte[data_length + data_pad_length];
byte[] data_in = new byte[data_length + data_pad_length];;
int addr_back = addr;
bin_data.CopyTo(data, 0);
if (data_pad_length != 0)
{
for (int i = 0; i < data_pad_length; i++)
{
data[data_length + i] = (byte)(255);
}
}
br.Close();
//Upate data_length to data_length + data_pad_length
data_length = data_length + data_pad_length;
// Buffer for outgoing data.
byte[] data_page = new byte[4 + PAGE_SIZE];
byte[] noresult = new byte[1];
byte[] data_back = new byte[5];
//Erase first
_erase(handle, addr / 4, (data.Length / (4 * 1024)) + 1);
// Reset the state of the bus.
CheetahApi.ch_spi_queue_clear(handle);
CheetahApi.ch_spi_queue_ss(handle, 0);
CheetahApi.ch_spi_queue_oe(handle, 1);
CheetahApi.ch_spi_batch_shift(handle, 0, noresult);
// Convert address and length from KB to bytes
addr *= 1024;
// Set the starting counter based on the address.
int val = addr / 4;
int pages = 0;
int retry = 0;
while (data_length != 0)
{
// Start the write sequence.
CheetahApi.ch_spi_queue_clear(handle);
CheetahApi.ch_spi_queue_oe(handle, 1);
// Send PAGE_WRITE_BATCH_SIZE number of pages to the Cheetah per
// batch shift. Here we only program one page each batch
for (int i = 0; i < PAGE_WRITE_BATCH_SIZE; i++)
{
// Check if we've reached the end.
if (data_length == 0)
{
break;
}
CheetahApi.ch_spi_queue_ss(handle, 0x1);
CheetahApi.ch_spi_queue_byte(handle, 1, 0x06);
CheetahApi.ch_spi_queue_ss(handle, 0);
//while (((data_back[0]>>1 & 0x01) != 1) && (retry++ < 100) ) {
// // Queue the write enable instruction for the flash.
// //Write enable command 0x06
// CheetahApi.ch_spi_queue_ss(handle, 0x1);
// CheetahApi.ch_spi_queue_byte(handle, 1, 0x06);
// CheetahApi.ch_spi_queue_ss(handle, 0);
// CheetahApi.ch_spi_batch_shift(handle, 0, noresult);
// CheetahApi.ch_spi_queue_clear(handle);
// //Send RDSR Command check WEL bit = 1?
// //Shift out RDSR Command First 0x05
// CheetahApi.ch_spi_queue_ss(handle, 0x1);
// CheetahApi.ch_spi_queue_byte(handle, 1, 0x05);
// CheetahApi.ch_spi_queue_ss(handle, 0);
// CheetahApi.ch_spi_batch_shift(handle, 0,noresult);
// CheetahApi.ch_spi_queue_clear(handle);
// //Read One Byte Data Back
// CheetahApi.ch_spi_queue_ss(handle, 0x1);
// CheetahApi.ch_spi_queue_byte(handle, 1, 0x00);
// CheetahApi.ch_spi_queue_ss(handle, 0);
// CheetahApi.ch_spi_batch_shift(handle,1, data_back);
// CheetahApi.ch_spi_queue_clear(handle);
//}
//if (retry >= 100)
//{
// Console.Write("Write Enable Failed.\n");
// Console.Out.Flush();
// return 1;
//}
// Queue the write instruction for the flash.
// Page write command 0x02 + ADDR[3] + BYTE[256]
CheetahApi.ch_spi_queue_ss(handle, 0x1);
data_page[0] = 0x02;
data_page[1] = (byte)((addr >> 16) & 0xff);
data_page[2] = (byte)((addr >> 8) & 0xff);
data_page[3] = (byte)((addr >> 0) & 0xff);
Console.Write("addr = 0x{0:x6}; num bytes = {1:d}\n",
addr, PAGE_SIZE);
Console.Out.Flush();
// Set the data to be written to the flash to incrementing
// 32-bit values starting from 0.
int j = 0;
while (j < PAGE_SIZE)
{
data_page[4 + j] = data[j + pages * 256];
j += 1;
}
CheetahApi.ch_spi_queue_array(handle, 4 + PAGE_SIZE, data_page);
CheetahApi.ch_spi_queue_ss(handle, 0);
// Give the flash time to commit the written values.
// Using ch_spi_queue_delay_ns is much more accurate than
// using ch_sleep_ms.
CheetahApi.ch_spi_queue_delay_ns(handle,
PAGE_PROGRAM_CYCLE_TIME_NS);
addr += PAGE_SIZE;
data_length -= PAGE_SIZE;
pages += 1;
}
// Shift out the write command. (Don't need the data back.)
Console.Write("Shifting data\n");
Console.Out.Flush();
int batch = CheetahApi.ch_spi_batch_length(handle);
int count = CheetahApi.ch_spi_batch_shift(handle, 0, noresult);
if (count != batch)
{
Console.Write("Expected {0:d} bytes but only received " +
"{1:d} bytes\n", batch, count);
return(1);
}
////Wait Programming Page Finished. Check WIP = 0?
//retry = 0;
//data_back[0] = (byte)(0xff);
//while (((data_back[0] & 0x01) != 0) && (retry++ < 100))
//{
// CheetahApi.ch_spi_queue_clear(handle);
// //Send RDSR Command check WIP bit = 0?
// //Shift out RDSR Command First 0x05
// CheetahApi.ch_spi_queue_ss(handle, 0x1);
// CheetahApi.ch_spi_queue_byte(handle, 1, 0x05);
// CheetahApi.ch_spi_queue_ss(handle, 0);
// CheetahApi.ch_spi_batch_length(handle);
// CheetahApi.ch_spi_batch_shift(handle, 0, noresult);
// CheetahApi.ch_spi_queue_clear(handle);
// //Read One Byte Data Back
// CheetahApi.ch_spi_queue_ss(handle, 0x1);
// CheetahApi.ch_spi_queue_byte(handle, 1, 0x00);
// CheetahApi.ch_spi_queue_ss(handle, 0);
// CheetahApi.ch_spi_batch_shift(handle, 1, data_back);
// CheetahApi.ch_spi_queue_clear(handle);
//}
//if (retry >= 100)
//{
// Console.Write("Write Enable Failed.\n");
// Console.Out.Flush();
// return 1;
//}
Console.Write("Shift complete\n");
Console.Out.Flush();
// //Check Programming Result
// //Send RDSCUR Command 2B
// //Read Security Register bit 5
// CheetahApi.ch_spi_queue_ss(handle, 0x1);
// CheetahApi.ch_spi_queue_byte(handle, 1, 0x2b);
// CheetahApi.ch_spi_queue_ss(handle, 0);
// CheetahApi.ch_spi_batch_shift(handle, 0, noresult);
// CheetahApi.ch_spi_queue_clear(handle);
// //Read One Byte Data Back
// data_back[0] = (byte)(0xff);
// CheetahApi.ch_spi_queue_ss(handle, 0x1);
// CheetahApi.ch_spi_queue_byte(handle, 1, 0x00);
// CheetahApi.ch_spi_queue_ss(handle, 0);
// CheetahApi.ch_spi_batch_shift(handle, 1, data_back);
// CheetahApi.ch_spi_queue_clear(handle);
// //Check P_FAIL bit = 0? 0-> PP pass ,1-> PP fail
// if ((data_back[0]>>5 & 0x01) != 0)
// {
// Console.Write("PP Failed...,PFAIL Flag == 1.\n");
// Console.Out.Flush();
// return 1;
// }
}
// Reset the state of the bus.
CheetahApi.ch_spi_queue_clear(handle);
CheetahApi.ch_spi_queue_oe(handle, 0);
CheetahApi.ch_spi_batch_shift(handle, 0, noresult);
ulong end = _timeMicroseconds();
Console.Write("Flashing take {0 :f3} seconds\n",
(double)(end - start) / 1000000);
Console.Out.Flush();
//verify the programming data is correct...
_read(handle, addr_back, data.Length / 1024, out data_in);
bool compare_result = false;
for (int k = 0; k < data.Length; k++)
{
if (data[k] != data_in[k])
{
compare_result = true;
break;
}
}
end = _timeMicroseconds();
Console.Write("Totally take {0 :f3} seconds\n", (double)(end - start) / 1000000);
if (!compare_result)
{
Console.Write("Flashing Successfull...\n");
Console.Out.Flush();
return(0);
}
else
{
Console.Write("Flashing Failed...\n");
Console.Out.Flush();
return(-1);
}
}
/*=====================================================================
| FUNCTIONS
| ====================================================================*/
static void _writeMemory(int handle, ushort addr, ushort length, int zero)
{
short i, j, n;
int batch, count;
byte[] data_out = new byte[3 + PAGE_SIZE];
byte[] noresult = new byte[1];
// Write to the SPI EEPROM
//
// The AT25080A EEPROM has 32 byte pages. Data can be written
// in pages, to reduce the number of overall SPI transactions
// executed through the Cheetah adapter.
n = 0;
while (n < length)
{
CheetahApi.ch_spi_queue_clear(handle);
CheetahApi.ch_spi_queue_oe(handle, 1);
// Send PAGE_WRITE_BATCH_SIZE number of pages to the Cheetah per
// batch shift
for (i = 0; i < PAGE_WRITE_BATCH_SIZE; i++)
{
if (n >= length)
{
break;
}
// Send write enable command
CheetahApi.ch_spi_queue_ss(handle, 0x1);
CheetahApi.ch_spi_queue_byte(handle, 1, 0x06);
CheetahApi.ch_spi_queue_ss(handle, 0);
// Assemble the write command and address
Console.Write("addr = 0x{0:x4}; ", addr);
data_out[0] = (byte)0x02;
data_out[1] = (byte)((addr >> 8) & 0xff);
data_out[2] = (byte)((addr >> 0) & 0xff);
// Assemble the data
j = 3;
do
{
data_out[j++] = (zero != 0) ? (byte)0 : (byte)n;
++addr; ++n;
} while ((n < length) && ((addr & (PAGE_SIZE - 1)) != 0));
Console.Write("num bytes = {0:d}\n", j - 3);
Console.Out.Flush();
// Queue the write transaction
CheetahApi.ch_spi_queue_ss(handle, 0x1);
CheetahApi.ch_spi_queue_array(handle, j, data_out);
CheetahApi.ch_spi_queue_ss(handle, 0);
// Put in a wait for the write cycle time
CheetahApi.ch_spi_queue_delay_ns(handle, PAGE_WRITE_DELAY_NS);
}
// Shift the page writes
// Don't need the results back from the shift
Console.Write("Shifting data\n");
Console.Out.Flush();
batch = CheetahApi.ch_spi_batch_length(handle);
count = CheetahApi.ch_spi_batch_shift(handle, 0, noresult);
if (count != batch)
{
Console.Write("Expected {0:d} bytes but only received " +
"{1:d} bytes\n", batch, count);
return;
}
Console.Write("Shift complete\n");
Console.Out.Flush();
}
}
