Added init sequence

Author: Kevin Townsend

adafruit_bluefruitspi.py

@@ -143,7 +143,8 @@ def __init__(self, spi, cs, irq, reset, debug=False):
         self._irq.direction = Direction.INPUT
         self._irq.pull = Pull.DOWN
 
-        self._spi_device = SPIDevice(spi, cs)
+        self._spi_device = SPIDevice(spi, cs,
+                                     baudrate=4000000, phase=0, polarity=0)
 
     def cmd(self, cmd):
         """
@@ -207,6 +208,24 @@ def cmd(self, cmd):
 
         return msgtype, rspid, rsp
 
+    def init(self):
+        """
+        Sends the SDEP initialize command, which causes the board to reset.
+        This command should complete in under 1s.
+        """
+        # Construct the SDEP packet
+        struct.pack_into("<BHB", self._buf_tx, 0,
+                         MsgType.COMMAND, SDEPCommand.INITIALIZE, 0)
+        if self._debug:
+            print("Writing: ", [hex(b) for b in self._buf_tx])
+
+        # Send out the SPI bus
+        with self._spi_device as spi:
+            spi.write(self._buf_tx, end=4)
+
+        # Wait 1 second for the command to complete.
+        time.sleep(1)
+
     def uarttx(self, txt):
         """
         Sends the specific string out over BLE UART.

examples/bluefruitspi_simpletest.py

@@ -20,46 +20,19 @@ def send_command(string):
     except RuntimeError as error:
         raise RuntimeError("AT command failure: " + repr(error))
 
-def command_check_OK(string):
+def command_check_OK(string, delay=0.0):
     ret = send_command(string)
+    time.sleep(delay)
     if not ret or not ret[-4:]:
         raise RuntimeError("Not OK")
     if ret[-4:] != b'OK\r\n':
         raise RuntimeError("Not OK")
     if ret[:-4]:
         return str(ret[:-4], 'utf-8')
 
-def uarttx(string):
-    try:
-        msgtype, msgid, rsp = bluefruit.uarttx(string)
-        if msgtype == MsgType.ERROR:
-            raise RuntimeError("Error (id:{0})".format(hex(msgid)))
-    except RuntimeError as error:
-        raise RuntimeError("UARTTX command failure: " + repr(error))
-    if not rsp or not rsp[-4:]:
-        raise RuntimeError("Not OK")
-    if rsp[-4:] != b'OK\r\n':
-        raise RuntimeError("Not OK")
-    if rsp[:-4]:
-        return str(ret[:-4], 'utf-8')
-
-def uartrx():
-    try:
-        msgtype, msgid, rsp = bluefruit.uartrx()
-        if msgtype == MsgType.ERROR:
-            raise RuntimeError("Error (id:{0})".format(hex(msgid)))
-    except RuntimeError as error:
-        raise RuntimeError("UARTRX command failure: " + repr(error))
-    if not rsp or not rsp[-4:]:
-        raise RuntimeError("Not OK")
-    if rsp[-4:] != b'OK\r\n':
-        raise RuntimeError("Not OK")
-    if rsp[:-4]:
-        return str(ret[:-4], 'utf-8')
-
-# Send the ATI command
-print(command_check_OK("AT+FACTORYRESET"))
-time.sleep(1)
+# Initialize the device
+bluefruit.init()
+print(command_check_OK("AT+FACTORYRESET", 1.0))
 print(command_check_OK("ATI"))
 #print(command_check_OK("AT+GAPDEVNAME=ColorLamp"))
 
@@ -80,6 +53,10 @@ def uartrx():
     # Yay!
     print("\nConnected!")
     while connected:
-        uarttx("1")
-        connected = int(command_check_OK("AT+GAPGETCONN")) == 1
+        command_check_OK("AT+BLEUARTTX=*")
+        resp = command_check_OK("AT+BLEUARTRX")
+        if resp:
+            print(resp)
+        # Check connection status with a 1s delay
+        connected = int(command_check_OK("AT+GAPGETCONN", 0.5)) == 1
     print("Connection lost.")