diff options
Diffstat (limited to 'src/sw')
| -rwxr-xr-x | src/sw/hash_tester.py | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/src/sw/hash_tester.py b/src/sw/hash_tester.py index c9da8ed..472a6df 100755 --- a/src/sw/hash_tester.py +++ b/src/sw/hash_tester.py @@ -65,6 +65,11 @@ import hashlib # CONFIGURE YOUR DEVICE HERE! SERIAL_DEVICE = '/dev/cu.usbserial-A801SA6T' BAUD_RATE = 9600 +BIT_RATE = int(50E6 / BAUD_RATE) + +BAUD_RATE2 = 256000 +BIT_RATE2 = int(50E6 / BAUD_RATE2) + DATA_BITS = 8 STOP_BITS = 1 @@ -74,7 +79,7 @@ VERBOSE = False # Delay times we wait PROC_DELAY_TIME = 0.0001 -COMM_DELAY_TIME = 0.05 +COMM_DELAY_TIME = 0.005 # Memory map. SOC = '\x55' @@ -83,6 +88,9 @@ READ_CMD = '\x10' WRITE_CMD = '\x11' UART_ADDR_PREFIX = '\x00' +UART_ADDR_BIT_RATE = '\x10' +UART_ADDR_DATA_BITS = '\x11' +UART_ADDR_STOP_BITS = '\x12' SHA1_ADDR_PREFIX = '\x10' SHA1_ADDR_NAME0 = '\x00' @@ -957,6 +965,20 @@ def main(): print "Error: Can't open serial device." sys.exit(1) + # Try and switch baud rate in the FPGA and then here. + bit_rate_high = chr((BIT_RATE2 >> 8) & 0xff) + bit_rate_low = chr(BIT_RATE2 & 0xff) + + if VERBOSE: + print("Changing to new baud rate.") + print("Baud rate: %d" % BAUD_RATE2) + print("Bit rate high byte: 0x%02x" % ord(bit_rate_high)) + print("Bit rate low byte: 0x%02x" % ord(bit_rate_low)) + + write_serial_bytes([SOC, WRITE_CMD, UART_ADDR_PREFIX, UART_ADDR_BIT_RATE, + '\x00', '\x00', bit_rate_high, bit_rate_low, EOC], ser) + ser.baudrate=BAUD_RATE2 + try: my_thread = threading.Thread(target=read_serial_thread, args=(ser,)) except: @@ -975,6 +997,7 @@ def main(): test_case(ser) # Exit nicely. + time.sleep(50 * COMM_DELAY_TIME) if VERBOSE: print "Done. Closing device." ser.close() |