lpcmanager

Serial protocol SendData only prefix with size in case of variable size content (i.e. SetTraceVariableList)

2013-03-22, Edouard Tisserant
a9a499321a9b
Parents f131808ff78d
Children 969adbce6759
Serial protocol SendData only prefix with size in case of variable size content (i.e. SetTraceVariableList)
1 files changed, 10 insertions(+), 8 deletions(-)
  • +10 -8
    LPCconnector/LPCAppProto.py
    • --- a/LPCconnector/LPCAppProto.py Thu Mar 21 17:29:53 2013 +0100
    +++ b/LPCconnector/LPCAppProto.py Fri Mar 22 10:46:51 2013 +0900
    @@ -46,17 +46,14 @@
    return None
    def SendData(self, Data):
    - length = len(Data)
    - # transform length into a byte string
    - # we presuppose endianess of LPC same as PC
    - lengthstr = ctypes.string_at(ctypes.pointer(ctypes.c_int(length)),4)
    - buffer = lengthstr + Data
    - return self.pseudofile.write(buffer)
    + return self.pseudofile.write(Data)
    def GetData(self):
    lengthstr = self.pseudofile.read(4)
    # transform a byte string into length
    - length = ctypes.cast(ctypes.c_char_p(lengthstr), ctypes.POINTER(ctypes.c_int)).contents.value
    + length = ctypes.cast(
    + ctypes.c_char_p(lengthstr),
    + ctypes.POINTER(ctypes.c_uint32)).contents.value
    return self.pseudofile.read(length)
    def ExchangeData(self):
    @@ -82,7 +79,12 @@
    class SET_TRACE_VARIABLETransaction(LPCAppTransaction):
    def __init__(self, data):
    LPCAppTransaction.__init__(self, 0x04)
    - self.Data = data
    + length = len(data)
    + # transform length into a byte string
    + # we presuppose endianess of LPC same as PC
    + lengthstr = ctypes.string_at(ctypes.pointer(ctypes.c_uint32(length)),4)
    + self.Data = lengthstr + data
    +
    def ExchangeData(self):
    self.SendData(self.Data)