更新MPY一些库优化，及增加微波雷达，语音播放库

boards/default_src/micropython/origin/build/lib/cbr817.py

@@ -0,0 +1,112 @@
+"""
+CBR817
+
+MicroPython library for the CBR817 (Microwave radar sensor)
+=======================================================
+@dahanzimin From the Mixly Team
+"""
+import time
+from machine import Pin
+from micropython import const
+
+CBR_ADDRESS			= const(0x71)
+CBR_OP_SET			= const(0x02)
+CBR_TX_RF			= const(0x03)
+CBR_POWER			= const(0x04)
+CBR_LIGHT			= const(0x0B)
+CBR_REG_CTR1		= const(0X13)
+CBR_SENSOR_THR		= const(0X18)
+CBR_NOISE_THR		= const(0X1A)
+CBR_TRIGER			= const(0x1C)
+CBR_DELAY_TIM		= const(0X1D)
+CBR_LOCK_TIM		= const(0X20)
+CBR_SEL_REG			= const(0x23)
+CBR_REG_CTR2		= const(0X24)
+CBR_FILTER			= const(0x2A)
+CBR_RESULT			= const(0x81)
+
+class CBR817:
+	def __init__(self, i2c_bus, addr=CBR_ADDRESS, tx_power=3, threshold=5000, noise=256, delay=500, lock=500):
+		self._device  = i2c_bus
+		self._address = addr
+		_str_i2c = str(self._device)
+		self._scl = Pin(int(_str_i2c[_str_i2c.find('=') + 1 : _str_i2c.find(",")]), Pin.OUT, Pin.OPEN_DRAIN)
+
+		self._wake()
+		self._configure()
+		self.tx_power(tx_power)
+		self.threshold(threshold)
+		self.noise(noise)
+		self.delay_ms(delay)
+		self.lock_ms(lock)
+
+	def _wreg(self, reg, val):
+		'''Write memory address'''
+		self._device.writeto_mem(self._address, reg, val.to_bytes(1, 'little'))
+
+	def _rreg(self, reg, nbytes=1):
+		'''Read memory address'''
+		return  self._device.readfrom_mem(self._address, reg, nbytes)[0] if nbytes <= 1 else self._device.readfrom_mem(self._address, reg, nbytes)[0:nbytes]
+
+	def _wake(self):
+		'''Wake up from low power consumption'''
+		self._scl.value(0)
+		time.sleep_us(10)
+
+	def threshold(self, value=None):
+		if value is None:
+			return self._rreg(CBR_SENSOR_THR) | self._rreg(CBR_SENSOR_THR + 1) << 8 
+		else:
+			self._wreg(CBR_SENSOR_THR, value & 0xFF)
+			self._wreg(CBR_SENSOR_THR + 1, (value >> 8) & 0xFF)
+
+	def noise(self, value=None):
+		if value is None:
+			return self._rreg(CBR_NOISE_THR) | self._rreg(CBR_NOISE_THR + 1) << 8 
+		else:
+			self._wreg(CBR_NOISE_THR, value & 0xFF)
+			self._wreg(CBR_NOISE_THR + 1, (value >> 8) & 0xFF)
+
+	def delay_ms(self, value=None):
+		if value is None:
+			return round((self._rreg(CBR_DELAY_TIM) | self._rreg(CBR_DELAY_TIM + 1) << 8  | self._rreg(CBR_DELAY_TIM + 2) << 16) / 32)
+		else:
+			value = value * 32
+			self._wreg(CBR_DELAY_TIM, value & 0xFF)
+			self._wreg(CBR_DELAY_TIM + 1, (value >> 8) & 0xFF)
+			self._wreg(CBR_DELAY_TIM + 2, (value >> 16) & 0xFF)
+
+	def lock_ms(self, value=None):
+		if value is None:
+			return round((self._rreg(CBR_LOCK_TIM) | self._rreg(CBR_LOCK_TIM + 1) << 8  | self._rreg(CBR_LOCK_TIM + 2) << 16) // 32)
+		else:
+			value = value * 32
+			self._wreg(CBR_LOCK_TIM, value & 0xFF)
+			self._wreg(CBR_LOCK_TIM + 1, (value >> 8) & 0xFF)
+			self._wreg(CBR_LOCK_TIM + 2, (value >> 16) & 0xFF)
+
+	def tx_power(self, value=None):
+		if value is None:
+			return self._rreg(CBR_TX_RF) & 0x07
+		else:
+			self._wreg(CBR_TX_RF, (value & 0x07) | 0x30)
+
+	def _configure(self):
+		self._wreg(CBR_SEL_REG, 0xC0)			#唤醒射频芯片
+		_star = time.ticks_ms()
+		while self._rreg(CBR_SEL_REG) != 0xC0:
+			self._wreg(CBR_SEL_REG, 0xC0)
+			time.sleep_us(10)
+			if time.ticks_diff(time.ticks_ms(), _star) >= 200:
+				raise AttributeError("Cannot find a CBR817")
+		self._wreg(CBR_TRIGER, 0x55)			#连续检测
+		self._wreg(CBR_LIGHT, 0x12)				#关闭光敏
+		self._wreg(CBR_POWER, 0xA0)				#功耗全供电
+		self._wreg(CBR_FILTER, 0x0F)			#打开滤波器
+		self._wreg(CBR_OP_SET, 0x5C)			#单运放，0.5uA电流
+		self._wreg(CBR_REG_CTR1, 0X61)			#感应门限和噪声门限改寄存器控制
+		self._wreg(CBR_REG_CTR2, 0X60)			#延时时间和闭锁时间改寄存器控制
+
+	def result(self):
+		self._wake()
+		return bool(self._rreg(CBR_RESULT) & 0x20)