Question

我有一个Raspberry Pi 2，型号B，我想使用SPI与另一个Pi通信（稍后将其用于更多SPI设备）。我还想用WiringPi对我的程序进行C编码。

我以为我会确保我拥有所需的一切，所以我进行了全面升级：

sudo apt-get update && sudo apt-get upgrade -y

我安装了WiringPi，并启用了从raspi-config加载SPI，但如果没有以下错误，我仍然无法执行gpio load SPI：

gpio: Unable to load/unload modules as this Pi has the device tree enabled.
  You need to run the raspi-config program (as root) and select the
  modules (SPI or I2C) that you wish to load/unload there and reboot.
  There is more information here:
    https://www.raspberrypi.org/forums/viewtopic.php?f=28&t=97314

然后我尝试了the link suggested：

...将“device_tree =”添加到您的config.txt并重新启动。

$ nano sudo /boot/config.txt
# Go to last line
# Add 'device_tree='
# Save, and exit
$ sudo reboot

然后我尝试gpio load spi，但我仍然遇到同样的错误。

在/boot/config.txt中启用了SPI：

$ cat /boot/config.txt | grep spi
dtparam=spi=on

有任何建议，我可以尝试启用我的SPI吗？

Answer 1

根据this thread，a = a.reshape(1, -1) tf_x = tf.placeholder(tf.float32, [None, a.shape[-1]]) # now if you want the final array to have total 4 element, you can set it as number of output output = tf.layers.dense(tf_x, 4, tf.nn.relu) with tf.Session() as sess: sess.run(tf.global_variables_initializer()) pred = sess.run(output, {tf_x: a}) pred = pred.reshape(2, 2)已被弃用。

Raspberry Pi 2，如何禁用device_tree来启用SPI？

1 个答案: