# 24lc512(raspberry pi) 硬體平台:raspberry zero 目的:對24lc512實現簡易讀寫 ## 接線圖 ![](https://i.imgur.com/9A23nct.png) SDA-GPIO3 SCL-GPIO3 WP-GPIO4 VCC-3.3V VSS-GND ## 開啟i2c功能 ```bash= sudo raspi-config ``` ## 讀寫24lc512 開啟IC寫入權限 ```bash= echo 4 > /sys/class/gpio/export echo out > /sys/class/gpio/gpio4/direction #0為開啟寫入權限(WP) echo 0 > /sys/class/gpio/gpio4/value ``` 找尋i2C位址(0x50) ```bash= i2cdetect -y 1 ``` 對0x0000位址連續寫入10個位址(從0x05遞增到0x0e) ```bash= i2ctransfer -y 1 w12@0x50 0x00 0x00 0x05+ ``` 從位址0x50連續讀取10個位址 ```bash= i2ctransfer -y 1 w2@0x50 0x00 0x00 r10 ``` 確認寫入的十個位置是否為0x05道0x0e的數值，寫入成功!! 參考資料: [datasheet](http://ww1.microchip.com/downloads/en/devicedoc/21754m.pdf) [i2ctransfer](https://manpages.debian.org/unstable/i2c-tools/i2ctransfer.8.en.html) ###### tags: `raspberry pi`