Install SPI on raspberry pi

之前做過的事情,沒有做筆記,參考的網站也已經不支道淹沒到哪裡去了

害我明明半小時可以搞定的事情,搞了一整個早上!!!! 肯!!!!

Reference

http://tightdev.net/SpiDev_Doc.pdf

先更新在重開機

sudo apt-get update sudo apt-get upgrade sudo reboot

下載python dev

sudo apt-get install python-dev

打開raspi-blacklist.conf,把spi從黑名單中除去,再重開機

sudo nano /etc/modprobe.d/raspi-blacklist.conf sudo reboot

鍵入指令lsmod,看看spi_bcm2708在不在

lsmod

下載python spidev

mkdir python-spi cd python-spi wget https://raw.github.com/doceme/py-spidev/master/setup.py wget https://raw.github.com/doceme/py-spidev/master/spidev_module.c sudo python setup.py install

可以用下面程式測試來看接腳sclk與mosi是否有波形出來

#!/usr/bin/python import spidev import time spi = spidev.SpiDev() spi.open(0,1) try: while True: resp = spi.xfer2([0x01]) time.sleep(0.1) except KeyboardInterrupt: spi.close()

之前用舊版的pi,在跑程式前還需要設定這兩樣東西,看看試了,新版的b+好像不用了?????

Sudo modprobe spi-bcm2708 sudo chmod 666 /dev/spidev0.1