初始化提交

boards/default/micropython/build/lib/ble_uart_repl.py

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+# Proof-of-concept of a REPL over BLE UART.
+# Set the EoL characters to \r\n.
+
+import io
+import os
+from machine import Timer
+from micropython import schedule
+from ble_uart_peripheral import BLEUART
+
+_MP_STREAM_POLL = const(3)
+_MP_STREAM_POLL_RD = const(0x0001)
+
+# Batch writes into 50ms intervals.
+Define_timer = Timer(2)
+
+def schedule_in(handler, delay_ms):
+    def _wrap(_arg):
+        handler()
+    if Define_timer:
+        Define_timer.init(mode=Timer.ONE_SHOT, period=delay_ms, callback=_wrap)
+    else:
+        schedule(_wrap, None)
+
+# Simple buffering stream to support the dupterm requirements.
+class BLEUARTStream(io.IOBase):
+    def __init__(self, name="mpy-repl"):
+        self._uart = BLEUART(name)
+        self._tx_buf = bytearray()
+        self._uart.irq(self._on_rx)
+
+    def _on_rx(self):
+        if hasattr(os, "dupterm_notify"):
+            os.dupterm_notify(None)
+
+    def read(self, sz=None):
+        return self._uart.read(sz)
+
+    def readinto(self, buf):
+        avail = self._uart.read(len(buf))
+        if not avail:
+            return None
+        for i in range(len(avail)):
+            buf[i] = avail[i]
+        return len(avail)
+
+    def ioctl(self, op, arg):
+        if op == _MP_STREAM_POLL:
+            if self._uart.any():
+                return _MP_STREAM_POLL_RD
+        return 0
+
+    def _flush(self):
+        data = self._tx_buf[0:100]
+        self._tx_buf = self._tx_buf[100:]
+        self._uart.write(data)
+        if self._tx_buf:
+            schedule_in(self._flush, 50)
+
+    def write(self, buf):
+        empty = not self._tx_buf
+        self._tx_buf += buf
+        if empty:
+            schedule_in(self._flush, 50)
+
+def start(ble_name="mpy-repl"):
+    stream = BLEUARTStream(name=ble_name)
+    os.dupterm(stream)