From: Scott Shawcroft <scott@adafruit.com>
Date: Tue, 19 Sep 2023 16:55:23 +0000 (-0700)
Subject: Merge pull request #719 from makermelissa/fix-spi-buffer
X-Git-Tag: 8.22.4
X-Git-Url: https://git.ayoreis.com/Adafruit_Blinka-hackapet.git/commitdiff_plain/234688cf57e0cfd88b768a49b57ed630a4077551?hp=d7c11aecfeb5c06b58d8da8bc8e33c3d78c3b992

Merge pull request #719 from makermelissa/fix-spi-buffer

Update SPI to work with ReadableBuffers
---

diff --git a/src/adafruit_blinka/microcontroller/generic_linux/spi.py b/src/adafruit_blinka/microcontroller/generic_linux/spi.py
index 50ad8c1..6cce037 100755
--- a/src/adafruit_blinka/microcontroller/generic_linux/spi.py
+++ b/src/adafruit_blinka/microcontroller/generic_linux/spi.py
@@ -73,7 +73,7 @@ class SPI:
 
     def write(self, buf, start=0, end=None):
         """Write data from the buffer to SPI"""
-        if not buf:
+        if buf is None or len(buf) < 1:
             return
         if end is None:
             end = len(buf)
@@ -91,7 +91,7 @@ class SPI:
 
     def readinto(self, buf, start=0, end=None, write_value=0):
         """Read data from SPI and into the buffer"""
-        if not buf:
+        if buf is None or len(buf) < 1:
             return
         if end is None:
             end = len(buf)
@@ -116,7 +116,9 @@ class SPI:
         """Perform a half-duplex write from buffer_out and then
         read data into buffer_in
         """
-        if not buffer_out or not buffer_in:
+        if buffer_out is None or buffer_in is None:
+            return
+        if len(buffer_out) < 1 or len(buffer_in) < 1:
             return
         if out_end is None:
             out_end = len(buffer_out)