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# Maximum number of bytes that can be exchanged
_MAX_NB_BYTES = const(128)

class BLEperipheral:

	# Initializations
	def __init__(self, ble, name="mpy-uart", charbuf=_MAX_NB_BYTES):
		self._ble = ble
		self._ble.active(True)
		self._ble.irq(self._irq)
		# Registration of the service
		((self._tx_handle, self._rx_handle),) = self._ble.gatts_register_services((_UART_SERVICE,))

		# Extending chars buffers to 100 bytes
        	self._ble.gatts_write(self._tx_handle, bytes(charbuf))
		self._ble.gatts_write(self._rx_handle, bytes(charbuf))
		
		self._connections = set()
		self._rx_buffer = bytearray()
		self._handler = None
		# Advertising of the service (services=[_UART_UUID] is required for the exchange to identify the service)
		self._payload = advertising_payload(name=name, services=[_UART_UUID])
		self._advertise()

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