okay, here is a programmer (=kernel.py) which communicate to the pkernel

[pyfrprog.git] / pkernel / kernel.py

diff --git a/pkernel/kernel.py b/pkernel/kernel.py
index 20b3a36b78e1c2779032d0b29dcc64948c979589..91bbcc41ab0baac967fb34a9d012309af4262b4b 100755 (executable)
--- a/pkernel/kernel.py
+++ b/pkernel/kernel.py
@@ -7,25 +7,69 @@ DEVICE="/dev/ttyUSB0"
 # baudrate used for communication with pkernel
 KERNEL_BAUDRATE=38400
 
+def recvByte():
+       i = tty.read()
+       while len(i)==0:
+               time.sleep(0.01)
+               i = tty.read()
+       return ord(i)
+
+def sendByte(byte):
+       time.sleep(0.501) # just to get sure, wait 1ms
+       tty.write(chr(byte))
+       tty.flush()
+
+def sendWord(word):
+       sendByte(word & 0xFF)
+       sendByte((word >> 8) & 0xFF)
+
+def sendDWord(dword):
+       sendByte(dword & 0xFF)
+       sendByte((dword >> 8) & 0xFF)
+       sendByte((dword >> 16) & 0xFF)
+       sendByte((dword >> 24) & 0xFF)
+
 def pkernWRITE(address, size, data):
+       print "address:", hex(address), "size:", size
        # send WRITE command
-       sendByte(0x01)
-       if (recvByte() != 0xF1):
-               raise Exception
-       sendByte(0x03)
-       if (recvByte() != 0x83):
+       sendByte(0x13)
+       if (recvByte() != 0x37):
                raise Exception
        # tell desired address and size
        sendDWord(address)
        sendWord(size)
+       if (recvByte() != 0x04):
+               raise Exception
+       print "Received Metadata."
+
        # write binary stream of data
        for i in range(0, size):
                sendByte(data[i])
-       # get checksum
-       recvChecksum()
+
+       if (recvByte() != 0x08):
+               raise Exception
+       print "Received Data."
+
+       if (recvByte() != 0x18):
+               raise Exception
+       print "Erasing done."
+
+       if (recvByte() != 0x28):
+               raise Exception
+       print "Flashing done."
+
+
+class FlashSequence(object):
+       def __init__(self, address, data):
+               self.address = address
+               self.data = data
+
+# list of all our address/data pairs to flash
+flashseqs = []
+
 
 print "Initializing serial port..."
-tty = SerialPort(DEVICE, 500, KERNEL_BAUDRATE)
+tty = SerialPort(DEVICE, 0, KERNEL_BAUDRATE)
 
 # check command line arguments
 if len(sys.argv) != 2:
@@ -77,4 +121,6 @@ for seq in flashseqs:
        print "Flashing", len(seq.data), "bytes at address", hex(seq.address)
        pkernWRITE(seq.address, len(seq.data), seq.data)
 
+sendByte(0x99);
+
 print "Reset your board now to run code from Flash"