Fix SPI driver for firmware v3 by using _BURST commands

Author: TejasAnalyst

pslab/bus/spi.py

@@ -51,9 +51,9 @@ class _SPIPrimitive:
     """
 
     _TRANSFER_COMMANDS_MAP = {
-        8: CP.SEND_SPI8,
-        16: CP.SEND_SPI16,
-    }  # PSLab only supports 8 and 16 bits.
+        8: CP.SEND_SPI8_BURST,
+        16: CP.SEND_SPI16_BURST,
+    } # PSLab only supports 8 and 16 bits.
     _INTEGER_TYPE_MAP = {
         8: CP.Byte,
         16: CP.ShortInt,
@@ -508,9 +508,7 @@ def transfer8(self, data: int) -> int:
         data_in : int
             Data returned by slave device.
         """
-        self._start()
         data_in = self._transfer(data, 8)
-        self._stop()
 
         return data_in
 
@@ -527,9 +525,7 @@ def transfer16(self, data: int) -> int:
         data_in : int
             Data returned by slave device.
         """
-        self._start()
         data_in = self._transfer(data, 16)
-        self._stop()
 
         return data_in
 
@@ -546,9 +542,7 @@ def transfer8_bulk(self, data: List[int]) -> List[int]:
         data_in : list of int
             List of 8-bit data returned by slave device.
         """
-        self._start()
         data_in = self._transfer_bulk(data, 8)
-        self._stop()
 
         return data_in
 
@@ -565,9 +559,7 @@ def transfer16_bulk(self, data: List[int]) -> List[int]:
         data_in : list of int
             List of 16-bit data returned by slave device.
         """
-        self._start()
         data_in = self._transfer_bulk(data, 16)
-        self._stop()
 
         return data_in
 
@@ -579,9 +571,7 @@ def read8(self) -> int:
         int
             Data returned by slave device.
         """
-        self._start()
         data_in = self._read(8)
-        self._stop()
 
         return data_in
 
@@ -593,9 +583,7 @@ def read16(self) -> int:
         int
             Data returned by slave device.
         """
-        self._start()
         data_in = self._read(16)
-        self._stop()
 
         return data_in
 
@@ -612,9 +600,7 @@ def read8_bulk(self, data_to_read: int) -> List[int]:
         list of int
             List of 8-bit data returned by slave device.
         """
-        self._start()
         data_in = self._read_bulk(data_to_read, 8)
-        self._stop()
 
         return data_in
 
@@ -631,9 +617,7 @@ def read16_bulk(self, data_to_read: int) -> List[int]:
         list of int
             List of 16-bit date returned by slave device.
         """
-        self._start()
         data_in = self._read_bulk(data_to_read, 16)
-        self._stop()
 
         return data_in