Merge branch 'master' of https://github.com/BPI-STEAM/BPI-BIT-MicroPython

Author: junhuanchen

07.sensors/cs5460a/cs5460a.py

@@ -1,15 +1,60 @@
 from machine import Pin, SPI
-import utime
+
+from micropython import const
+
+CS5460A_RMS_VOLTAGE = const(0x18)
+
+CS5460A_RMS_CURRENT = const(0x16)
+
+CS5460A_TRUE_POWER = const(0x14)
+
+CS5460A_CFG_READ = const(0x00)  # //reg read: config
+
+CS5460A_CFG_READ_IGN = const(0x04)  # //reg read: Ign
+
+CS5460A_CFG_READ_VGN = const(0x08)  # //reg read: Vgn
+
+CS5460A_CFG_READ_CYCLE = const(0x0a)  # //reg read: cycle count
+
+CS5460A_CFG_POWER_UP = const(0xa0)  # // power-up/halt
+
+CS5460A_CFG_GAIN = const(0x40)  # // reg write: config. PGA Gain 10x, IHPF=1, VHPF=1
+
+CS5460A_CFG_GAIN1 = const(0x01)
+
+CS5460A_CFG_GAIN2 = const(0x00)
+
+CS5460A_CFG_GAIN3 = const(0x61)
+
+CS5460A_CFG_IGN= const(0x44)  # // reg write: Ign [current chan gain].
+
+CS5460A_CFG_IGN1 = const(0x40)
+
+CS5460A_CFG_IGN2 = const(0x00)
+
+CS5460A_CFG_IGN3 = const(0x00)
+
+CS5460A_CFG_VGN = const(0x48)  # reg write: Vgn [voltage chan gain]
+
+CS5460A_CFG_VGN1 = const(0x41)
+
+CS5460A_CFG_VGN2 = const(0xA0)
+
+CS5460A_CFG_VGN3 = const(0xEA)
+
+CS5460A_START_CONV = const(0xe8) #command : start convert
+
 
 class cs5460a(object):
-    def __init__(self, spi, cs=4, rst=2):
+    import utime
+    def __init__(self, spi, cs=2, rst=4):
         self.spi = spi
         self.cs = Pin(cs, Pin.OUT)
         self.rst = Pin(rst, Pin.OUT)
         self.FLOAT24 = 16777216.0  # 2^24
-        self.VOLTAGE_MULTIPLIER = (1 / self.FLOAT24 * 385)
+        self.VOLTAGE_MULTIPLIER = (1 / self.FLOAT24 * 367)
         self.CURRENT_MULTIPLIER = (1 / self.FLOAT24 * 11.66)
-        self.POWER_MULTIPLIER = (1 / self.FLOAT24 * 1.024 * 385 * 11.66 * 2)
+        self.POWER_MULTIPLIER = (1 / self.FLOAT24 * 1.024 * 367 * 11.66 * 2)
 
     def read(self, addr):
         b = bytearray([0xfe, 0xfe, 0xfe])
@@ -28,24 +73,24 @@ def write(self, addr, data):
         self.cs.value(1)
         # print('write_ok')
 
-    def cs5460a_init(self):
+    def cs5460a_setup(self):
         self.rst.value(0)
         utime.sleep_ms(50)
         self.rst.value(1)  # reset the  cs5460a
 
         self.cs.value(0)
-        self.spi.write(bytearray([0xa0]))
+        self.spi.write(bytearray([CS5460A_CFG_POWER_UP]))
         self.cs.value(1)  # the command of the power_up
 
-        self.write(0x40, bytearray([0x00, 0x00, 0x61]))  # set
-        self.write(0x48, bytearray([0x46, 0xfa, 0xcb]))
-        self.write(0x44, bytearray([0x42, 0x66, 0xb4]))
+        self.write(CS5460A_CFG_GAIN, bytearray([CS5460A_CFG_GAIN1, CS5460A_CFG_GAIN2, CS5460A_CFG_GAIN3]))  # set
+        self.write(CS5460A_CFG_VGN , bytearray([CS5460A_CFG_VGN1, CS5460A_CFG_VGN2, CS5460A_CFG_VGN3]))#V
+        self.write(CS5460A_CFG_IGN, bytearray([CS5460A_CFG_IGN1, CS5460A_CFG_IGN2, CS5460A_CFG_IGN3]))#A
 
         self.cs.value(0)
-        self.spi.write(bytearray([0xe8]))
+        self.spi.write(bytearray([CS5460A_START_CONV]))
         self.cs.value(1)  # start to convert
 
-    def conv(self, true_power):
+    def _conv(self, true_power):
         if true_power[0] > 0x80:
             a = bytearray([~true_power[0]])
             a[0] &= 0x7f
@@ -59,29 +104,51 @@ def conv(self, true_power):
             temp = ((true_power[0] + true_power[0] * 256 + true_power[0] * 65536) + 1)
         return temp
 
+    def read_u(self):
+        voltage = self.read(CS5460A_RMS_VOLTAGE)
+        temp = (voltage[2] + voltage[1] * 256 + voltage[0] * 65536)
+        V = self.VOLTAGE_MULTIPLIER * temp
+        return V
+
+    def read_i(self):
+        current = self.read(CS5460A_RMS_CURRENT)
+        temp = (current[2] + current[1] * 256 + current[0] * 65536)
+        A = self.CURRENT_MULTIPLIER * temp
+        return A
+
+    def read_p(self):
+        true_power = self.read(CS5460A_TRUE_POWER)
+        temp = self._conv(true_power)
+        P = self.POWER_MULTIPLIER * temp
+        return P
+
+
+from machine import Pin
+import utime
+
+p = Pin(18, Pin.OUT)
+p.value(1)
+
 
 def unit_test():
-    vspi = SPI(-1, sck=Pin(18), mosi=Pin(23), miso=Pin(19), baudrate=2000000)  # -1 software spi
+    vspi = SPI(-1, sck=Pin(5), mosi=Pin(23), miso=Pin(19), baudrate=2000000)  # -1 software spi
     ts = cs5460a(vspi)
-    ts.cs5460a_init()  # 初始化
+    ts.cs5460a_setup()  # 初始化
 
     while True:
         utime.sleep_ms(1000)
         k = ts.read(0x1e)
-        print(k)
-        voltage = ts.read(0x18)
-        current = ts.read(0x16)
-        true_power = ts.read(0x14)
-        temp1 = (current[2] + current[1] * 256 + current[0] * 65536)
-        temp2 = (voltage[2] + voltage[1] * 256 + voltage[0] * 65536)
-        t = ts.conv(true_power)
-        A = ts.CURRENT_MULTIPLIER * temp1
-        V = ts.VOLTAGE_MULTIPLIER * temp2
-        P = ts.POWER_MULTIPLIER * t
+        # print(k)
+        # current=ts.read(0x16)
+        # temp = (current[2] + current[1] * 256 + current[0] * 65536)/16777216
+        # print(temp)
+        V = ts.read_u()
+        A = ts.read_i()
+        P = ts.read_p()
         print('current=%.2f A' % A)
         print('voltage=%.2f V' % V)
         print('ture_power=%.2f W' % P)
 
 
 if __name__ == '__main__':
-    unit_test()
+    unit_test()