X-Git-Url: https://git.ayoreis.com/Adafruit_Blinka-hackapet.git/blobdiff_plain/8710bd63a485827e3935bf141e8300377d3ca98a..4376a296bdc5eca8e1c47d51219dbe173b217cd5:/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 0088ef2..3926922 100644 --- a/src/adafruit_blinka/microcontroller/nova/spi.py +++ b/src/adafruit_blinka/microcontroller/nova/spi.py @@ -1,15 +1,18 @@ class SPI: + MSB = 0 PAYLOAD_MAX_LENGTH = 64 def __init__(self, clock): from adafruit_blinka.microcontroller.nova import Connection self._nova = Connection.getInstance() + self._nova.setNumericalBase(10) self._nova.setOperationMode(0, 'SPI') 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) + # Cpol and Cpha set by mode # Mode Cpol Cpha # 0 0 0 @@ -18,14 +21,14 @@ class SPI: # 3 1 1 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)) + firstbit=MSB, sck=None, mosi=None, miso=None): + #print("baudrate: " + str(baudrate)) + #print("mode: " + str((polarity<<1) | (phase))) self._nova.setClockSPI(0, baudrate) self._nova.setModeSPI(0, (polarity<<1) | (phase)) @staticmethod - def getSpiReceivedData(lineOutput): + def get_received_data(lineOutput): return (lineOutput.split('RXD ')[1]) @property @@ -35,7 +38,6 @@ 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) - 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 @@ -48,17 +50,13 @@ class SPI: 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) - self._nova.setIOpinValue(0, 'LOW') for i in range(start, end): - buf[start+i] = int(self.getSpiReceivedData(self._nova.transferSPI(0, write_value)), 16) - self._nova.setIOpinValue(0, 'HIGH') + buf[start+i] = int(self.get_received_data(self._nova.transferSPI(0, write_value))) - def write_readinto(self, buffer_out, buffer_in, out_start=0, out_end=None, in_start=0, in_end=None): + 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) in_end = in_end if in_end else len(buffer_in) readlen = in_end-in_start @@ -69,10 +67,8 @@ class SPI: 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) + data_in = int(self.get_received_data(self._nova.transferSPI(0, data_out))) if i < readlen: buffer_in[in_start+i] = data_in i += 1 - self._nova.setIOpinValue(0, 'HIGH')