From: Jeff Epler <jepler@gmail.com>
Date: Thu, 28 Jan 2021 21:59:52 +0000 (-0600)
Subject: nxp_lpc4430: Fix SPI.readinto's write_value= argument
X-Git-Tag: 6.2.0~1^2~1
X-Git-Url: https://git.ayoreis.com/Adafruit_Blinka-hackapet.git/commitdiff_plain/f3b52cf393a38497d65d58b96b117ef6d384ea16

nxp_lpc4430: Fix SPI.readinto's write_value= argument

Before, this argument was ignored.  This prevented adafruit_sdcard from
functioning, as it relies on being able to send out the value 0xff.

This fix is speculative and untested.
---

diff --git a/src/adafruit_blinka/microcontroller/nxp_lpc4330/spi.py b/src/adafruit_blinka/microcontroller/nxp_lpc4330/spi.py
index 17859a4..a6e4045 100644
--- a/src/adafruit_blinka/microcontroller/nxp_lpc4330/spi.py
+++ b/src/adafruit_blinka/microcontroller/nxp_lpc4330/spi.py
@@ -93,7 +93,7 @@ class SPI:
     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)
-        result = self._transmit([], end - start)
+        result = self._transmit([write_value] * (end-start), end - start)
         for i, b in enumerate(result):
             buf[start + i] = b