Change the pins activation acording to AFCv4 specifications

nxpprog.py

@@ -464,27 +464,12 @@ def __init__(self, device, baud, xonxoff=False, control=False):
  # this is of course only possible if the signals are connected in
  # this way
  def isp_mode(self):
- self.reset(0)
- time.sleep(.1)
- self.reset(1)
- self.int0(1)
- time.sleep(.1)
- self.reset(0)
- time.sleep(.1)
- self.int0(0)
-
- def reset(self, level):
- if self.reset_pin == "rts":
- self._serial.setRTS(level)
- else:
- self._serial.setDTR(level)
 
- def int0(self, level):
- # if reset pin is rts int0 pin is dtr
- if self.reset_pin == "rts":
- self._serial.setDTR(level)
- else:
- self._serial.setRTS(level)
+ # sequence to put the AFCv4 (https://ohwr.org/project/afc/tree/cti_afc4) into bootloader mode
+ self._serial.setRTS(1) # set RTS line to 0v
+ self._serial.setDTR(0) # set DTR line to 3.3v
+ time.sleep(0.1)
+ self._serial.setDTR(1) # set DTR line to 0v
 
  def write(self, data):
  self._serial.write(data)