Fix some SPI-related code to get BME280 example code working

[Adafruit_Blinka-hackapet.git] / src / adafruit_blinka / microcontroller / nova / spi.py

diff --git a/src/adafruit_blinka/microcontroller/nova/spi.py b/src/adafruit_blinka/microcontroller/nova/spi.py
index 0088ef250adbdcef5856833ac52e026718a2603e..f51192eac32cd46bae67579d9ffa68494b8481ae 100644 (file)
--- a/src/adafruit_blinka/microcontroller/nova/spi.py
+++ b/src/adafruit_blinka/microcontroller/nova/spi.py
@@ -1,4 +1,5 @@
 class SPI:
 class SPI:

+    MSB = 0

     PAYLOAD_MAX_LENGTH = 64
 
     def __init__(self, clock):
     PAYLOAD_MAX_LENGTH = 64
 
     def __init__(self, clock):


@@ -8,8 +9,9 @@ class SPI:
         self._nova.setClockSPI(0, clock)
         self._nova.setModeSPI(0, 0)
         self._nova.setIOpinMode(0, 'DOUT')
         self._nova.setClockSPI(0, clock)
         self._nova.setModeSPI(0, 0)
         self._nova.setIOpinMode(0, 'DOUT')

-        self._nova.setIOpinValue(0, 'HIGH')
+        self._nova.setIOpinMode(1, 'DOUT')

         self._nova.beginSPI(0)
         self._nova.beginSPI(0)

+

         # Cpol and Cpha set by mode
         # Mode  Cpol Cpha
         #  0     0    0
         # Cpol and Cpha set by mode
         # Mode  Cpol Cpha
         #  0     0    0


@@ -19,8 +21,8 @@ class SPI:
 
     def init(self, baudrate=100000, polarity=0, phase=0, bits=8,
                   firstbit=MSB, sck=None, mosi=None, miso=None):
 
     def init(self, baudrate=100000, polarity=0, phase=0, bits=8,
                   firstbit=MSB, sck=None, mosi=None, miso=None):

-        print("baudrate: " + baudrate)
-        print("mode: " + (polarity<<1) | (phase))
+        #print("baudrate: " + str(baudrate))
+        #print("mode: " + str((polarity<<1) | (phase)))

         self._nova.setClockSPI(0, baudrate)
         self._nova.setModeSPI(0, (polarity<<1) | (phase))
 
         self._nova.setClockSPI(0, baudrate)
         self._nova.setModeSPI(0, (polarity<<1) | (phase))
 


@@ -35,7 +37,6 @@ class SPI:
     def write(self, buf, start=0, end=None):
         end = end if end else len(buf)
         chunks, rest = divmod(end - start, self.PAYLOAD_MAX_LENGTH)
     def write(self, buf, start=0, end=None):
         end = end if end else len(buf)
         chunks, rest = divmod(end - start, self.PAYLOAD_MAX_LENGTH)

-        self._nova.setIOpinValue(0, 'LOW')

         for i in range(chunks):
             chunk_start = start + i * self.PAYLOAD_MAX_LENGTH
             chunk_end = chunk_start + self.PAYLOAD_MAX_LENGTH
         for i in range(chunks):
             chunk_start = start + i * self.PAYLOAD_MAX_LENGTH
             chunk_end = chunk_start + self.PAYLOAD_MAX_LENGTH


@@ -48,15 +49,11 @@ class SPI:
             self._nova.clearBuffer(0)
             self._nova.writeToBuffer(0, 0, buffer_data)
             self._nova.transferBufferSPI(0, rest)
             self._nova.clearBuffer(0)
             self._nova.writeToBuffer(0, 0, buffer_data)
             self._nova.transferBufferSPI(0, rest)

-        self._nova.setIOpinValue(0, 'HIGH')
-        print(self._nova.readBuffer(0, 4))

 
     def readinto(self, buf, start=0, end=None, write_value=0):
         end = end if end else len(buf)
 
     def readinto(self, buf, start=0, end=None, write_value=0):
         end = end if end else len(buf)

-        self._nova.setIOpinValue(0, 'LOW')

         for i in range(start, end):
             buf[start+i] = int(self.getSpiReceivedData(self._nova.transferSPI(0, write_value)), 16)
         for i in range(start, end):
             buf[start+i] = int(self.getSpiReceivedData(self._nova.transferSPI(0, write_value)), 16)

-        self._nova.setIOpinValue(0, 'HIGH')

 
     def write_readinto(self, buffer_out, buffer_in,  out_start=0, out_end=None, in_start=0, in_end=None):
         out_end = out_end if out_end else len(buffer_out)
 
     def write_readinto(self, buffer_out, buffer_in,  out_start=0, out_end=None, in_start=0, in_end=None):
         out_end = out_end if out_end else len(buffer_out)


@@ -69,10 +66,8 @@ class SPI:
             tmp.extend([0] * (readlen - len(buffer_out)))
             buffer_out = tmp
         i = 0
             tmp.extend([0] * (readlen - len(buffer_out)))
             buffer_out = tmp
         i = 0

-        self._nova.setIOpinValue(0, 'LOW')

         for data_out in buffer_out:
             data_in = int(self.getSpiReceivedData(self._nova.transferSPI(0, data_out)), 16)
             if i < readlen:
                 buffer_in[in_start+i] = data_in
             i += 1
         for data_out in buffer_out:
             data_in = int(self.getSpiReceivedData(self._nova.transferSPI(0, data_out)), 16)
             if i < readlen:
                 buffer_in[in_start+i] = data_in
             i += 1

-        self._nova.setIOpinValue(0, 'HIGH')