+# SPDX-FileCopyrightText: 2021 Melissa LeBlanc-Williams for Adafruit Industries
+#
+# SPDX-License-Identifier: MIT
"""SPI Class for Binho Nova"""
from adafruit_blinka.microcontroller.nova import Connection
"""Custom SPI Class for Binho Nova"""
MSB = 0
- PAYLOAD_MAX_LENGTH = 64
+ BUFFER_PAYLOAD_MAX_LENGTH = 64
+ WHR_PAYLOAD_MAX_LENGTH = 1024
def __init__(self, clock):
self._nova = Connection.getInstance()
self._nova.setIOpinMode(0, "DOUT")
self._nova.setIOpinMode(1, "DOUT")
self._nova.beginSPI(0)
+ self._novaCMDVer = "0"
+ if hasattr(self._nova, "getCommandVer"):
+ response = self._nova.getCommandVer().split(" ")
+ if response[0] != "-NG":
+ self._novaCMDVer = response[1]
# Cpol and Cpha set by mode
# Mode Cpol Cpha
# 2 1 0
# 3 1 1
+ def __del__(self):
+ """Close Nova on delete"""
+ self._nova.close()
+
# pylint: disable=too-many-arguments,unused-argument
def init(
self,
- baudrate=100000,
+ baudrate=1000000,
polarity=0,
phase=0,
bits=8,
miso=None,
):
"""Initialize the Port"""
- # print("baudrate: " + str(baudrate))
- # print("mode: " + str((polarity<<1) | (phase)))
self._nova.setClockSPI(0, baudrate)
self._nova.setModeSPI(0, (polarity << 1) | (phase))
def write(self, buf, start=0, end=None):
"""Write data from the buffer to SPI"""
end = end if end else len(buf)
- chunks, rest = divmod(end - start, self.PAYLOAD_MAX_LENGTH)
+ payloadMaxLength = self.BUFFER_PAYLOAD_MAX_LENGTH
+ if int(self._novaCMDVer) >= 1:
+ payloadMaxLength = self.WHR_PAYLOAD_MAX_LENGTH
+ chunks, rest = divmod(end - start, payloadMaxLength)
+
for i in range(chunks):
- chunk_start = start + i * self.PAYLOAD_MAX_LENGTH
- chunk_end = chunk_start + self.PAYLOAD_MAX_LENGTH
- buffer_data = buf[chunk_start:chunk_end]
- self._nova.clearBuffer(0)
- self._nova.writeToBuffer(0, 0, buffer_data)
- self._nova.transferBufferSPI(0, chunk_end - chunk_start + 1)
+ chunk_start = start + i * payloadMaxLength
+ chunk_end = chunk_start + payloadMaxLength
+ if int(self._novaCMDVer) >= 1:
+ self._nova.writeToReadFromSPI(
+ 0, True, False, chunk_end - chunk_start, buf[chunk_start:chunk_end]
+ )
+ else:
+ self._nova.clearBuffer(0)
+ self._nova.writeToBuffer(0, 0, buf[chunk_start:chunk_end])
+ self._nova.transferBufferSPI(0, chunk_end - chunk_start + 1)
if rest:
- buffer_data = buf[-1 * rest :]
- self._nova.clearBuffer(0)
- self._nova.writeToBuffer(0, 0, buffer_data)
- self._nova.transferBufferSPI(0, rest)
+ if int(self._novaCMDVer) >= 1:
+ self._nova.writeToReadFromSPI(0, True, False, rest, buf[-1 * rest :])
+ else:
+ self._nova.clearBuffer(0)
+ self._nova.writeToBuffer(0, 0, buf[-1 * rest :])
+ self._nova.transferBufferSPI(0, rest)
def readinto(self, buf, start=0, end=None, write_value=0):
"""Read data from SPI and into the buffer"""
end = end if end else len(buf)
- for i in range(start, end):
- buf[start + i] = int(
- self.get_received_data(self._nova.transferSPI(0, write_value))
- )
+ if int(self._novaCMDVer) >= 1:
+ chunks, rest = divmod(end - start, self.WHR_PAYLOAD_MAX_LENGTH)
+ i = 0
+ for i in range(chunks):
+ chunk_start = start + i * self.WHR_PAYLOAD_MAX_LENGTH
+ chunk_end = chunk_start + self.WHR_PAYLOAD_MAX_LENGTH
+ result = self._nova.writeToReadFromSPI(
+ 0, False, True, chunk_end - chunk_start, write_value
+ )
+ if result != "-NG":
+ resp = result.split(" ")
+ resp = resp[2]
+ # loop over half of resp len as we're reading 2 chars at a time to form a byte
+ loops = int(len(resp) / 2)
+ for j in range(loops):
+ buf[(i * self.WHR_PAYLOAD_MAX_LENGTH) + start + j] = int(
+ resp[j * 2] + resp[j * 2 + 1], 16
+ )
+ else:
+ raise RuntimeError(
+ "Received error response from Binho Nova, result = " + result
+ )
+ if rest:
+ result = self._nova.writeToReadFromSPI(
+ 0, False, True, rest, write_value
+ )
+ if result != "-NG":
+ resp = result.split(" ")
+ resp = resp[2]
- # pylint: disable=too-many-arguments
+ # loop over half of resp len as we're reading 2 chars at a time to form a byte
+ loops = int(len(resp) / 2)
+ for j in range(loops):
+ buf[(i * self.WHR_PAYLOAD_MAX_LENGTH) + start + j] = int(
+ resp[j * 2] + resp[j * 2 + 1], 16
+ )
+ else:
+ raise RuntimeError(
+ "Received error response from Binho Nova, result = " + result
+ )
+ else:
+ for i in range(start, end):
+ buf[start + i] = int(
+ self.get_received_data(self._nova.transferSPI(0, write_value))
+ )
+
+ # pylint: disable=too-many-arguments,too-many-locals,too-many-branches
def write_readinto(
self, buffer_out, buffer_in, out_start=0, out_end=None, in_start=0, in_end=None
):
tmp = bytearray(buffer_out)
tmp.extend([0] * (readlen - len(buffer_out)))
buffer_out = tmp
- i = 0
- for data_out in buffer_out:
- 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
-
- # pylint: enable=too-many-arguments
+
+ if int(self._novaCMDVer) >= 1:
+ chunks, rest = divmod(len(buffer_out), self.WHR_PAYLOAD_MAX_LENGTH)
+ i = 0
+ for i in range(chunks):
+ chunk_start = out_start + i * self.WHR_PAYLOAD_MAX_LENGTH
+ chunk_end = chunk_start + self.WHR_PAYLOAD_MAX_LENGTH
+ result = self._nova.writeToReadFromSPI(
+ 0,
+ True,
+ True,
+ chunk_end - chunk_start,
+ buffer_out[chunk_start:chunk_end],
+ )
+
+ if result != "-NG":
+ resp = result.split(" ")
+ resp = resp[2]
+
+ # loop over half of resp len as we're reading 2 chars at a time to form a byte
+ loops = int(len(resp) / 2)
+ for j in range(loops):
+ buffer_in[
+ (i * self.WHR_PAYLOAD_MAX_LENGTH) + in_start + j
+ ] = int(resp[j * 2] + resp[j * 2 + 1], 16)
+ else:
+ raise RuntimeError(
+ "Received error response from Binho Nova, result = " + result
+ )
+ if rest:
+ result = self._nova.writeToReadFromSPI(
+ 0, True, True, rest, buffer_out[-1 * rest :]
+ )
+ if result != "-NG":
+ resp = result.split(" ")
+ resp = resp[2]
+
+ # loop over half of resp len as we're reading 2 chars at a time to form a byte
+ loops = int(len(resp) / 2)
+ for j in range(loops):
+ buffer_in[
+ (i * self.WHR_PAYLOAD_MAX_LENGTH) + in_start + j
+ ] = int(resp[j * 2] + resp[j * 2 + 1], 16)
+ else:
+ raise RuntimeError(
+ "Received error response from Binho Nova, result = " + result
+ )
+ print(buffer_in)
+ else:
+ for data_out in buffer_out:
+ 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
+
+ # pylint: enable=too-many-arguments,too-many-locals,too-many-branches
projects / Adafruit_Blinka-hackapet.git / blobdiff