From: Jeff Epler <jeff@adafruit.com>
Date: Mon, 8 Feb 2021 18:05:43 +0000 (-0600)
Subject: Merge pull request #403 from jepler/ft232-spi-write_data
X-Git-Tag: 6.2.0~1
X-Git-Url: https://git.ayoreis.com/Adafruit_Blinka-hackapet.git/commitdiff_plain/8eb18ed39b1f84acda2758bec6612e862a6353c5?hp=de89c24eadd6ba05779c92c2861ac9964bed0ea3

Merge pull request #403 from jepler/ft232-spi-write_data

Fix SPI.readinto with write_data=NONZERO
---

diff --git a/src/adafruit_blinka/microcontroller/ft232h/spi.py b/src/adafruit_blinka/microcontroller/ft232h/spi.py
index 81797b3..c768eaf 100644
--- a/src/adafruit_blinka/microcontroller/ft232h/spi.py
+++ b/src/adafruit_blinka/microcontroller/ft232h/spi.py
@@ -67,7 +67,8 @@ 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._port.read(end - start)
+        buffer_out = [write_value] * (end - start)
+        result = self._port.exchange(buffer_out, end - start, duplex=True)
         for i, b in enumerate(result):
             buf[start + i] = b
 
diff --git a/src/adafruit_blinka/microcontroller/nxp_lpc4330/spi.py b/src/adafruit_blinka/microcontroller/nxp_lpc4330/spi.py
index 17859a4..28b4fd2 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