2022-12-21 08:40:34 [显示全部楼层]
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[求助] 树莓派TFT触摸屏问题咨询

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请问下,这个触摸屏的I2C不是直接连接到电容屏I2C的吗,中间还需要经过C8T6的转换才行吗?
WedDecember-202212216390..png

DFSyBM3-i4u  中级技师

发表于 2022-12-22 14:17:18

你要把这个接到其他设备上吗?这里面只有树莓派的出厂固件
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pATAq  版主

发表于 2023-1-6 01:22:04

可以看下这篇文章:https://community.st.com/s/quest ... m32f769idisco-board
1) Typically ICN6211 MIPI-DSI chip is used, no specs publicly available. However, lots of information can be found in Linux kernel forums. Based on this, I put configurator tool available here.

2) In addition to MIPI-DSI RPI displays use I2C communication for display config and touch. This communication is obfuscated. Note RPI displays contain some MPU, typically STM32F103. Probably the only purpose of this chip is to protect RPI secrets. What one can do is simply de-solder this chip and connect I2C lines (touch control and ICN6211. Doing so I have partially succeeded, I am able to communicate with ICN6211 and put in in test mode, display control screen, receive touch data. I have not succeeded yet configuring STM32F769 for ICN6211. If you do, please share the details/demo. For now I use MIPI parallel interface.

以上很可能直连FT5X06和RPi的I2C即可,并不需要F103,此MCU主要功能可能就是保护屏幕私有内容的,具体可以问下DFRobot的工程师
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花生编程  中级技匠

发表于 2023-8-20 11:06:42

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花生编程  中级技匠

发表于 2023-8-20 11:08:12

可以问一下DF商城的技术客服。
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