程序功能說明：1、通過STM32的硬件I2C讀寫控制BH1750光照度傳感器模塊測量環境光照強度。2、程序通過串口打印輸出光照強度值。3、程序將光照強度值在LCD屏上顯示。程序注意事項：1、根據BH1750傳感器手冊可知，在One Time H-Resolution Mode2測量模式下測量光照強度大于會要120ms以上的測量時間，所以程序在發送測量命令以后應該盡量延時120ms以上，否則測量出來的數據不準確。2、在兩次測量之間最好加個延時，也就是在第一次測量結束和下次測量命令發出之間加個100ms左右的延時，否則也會出現測量錯誤的問題。3、在使用FSMC驅動LCD時不能用I2C1，只能用I2C2，或者將I2C1的時鐘和引腳重映射。4、測量結果保存在兩個字節中的，所以需要作移位處理，具體處理方式可以產考手冊和程序。
Simulation can provide a lot of information about what the system is doing. We canadd the effect of different element, like Encoder resolution, ADC sampling rate, etc and understand how does it affect the system. Another benefit is the possibility to slow down the process, to gain insight on what happens of fast systems or, vice versa, speed up slow process.Because National Instruments is a unique company in the fact the we provide a fullhardware solution couple with a full development platform, we can use this tools in very particular ways For example, it is possible to combine the LabVIEW Control Design and Simulation Module along with the FPGA module to quickly prototype a controller. One of the main benefits of this approach is that there is no need to compile the FPGA code, which allows for a quick algorithm design turnaround and debugging.
RK3328手冊RK3328 is a high-performance Quad-core application processor designed for Smart STB(Set Top Box) including OTT/IPTV/DVB. It is a high-integration and cost efficient SOC for 4KHDR STB.Quad-core Cortex-A53 is integrated with separate Neon and FPU coprocessor, also withshared L2 Cache. The Quad-core GPU supports high-resolution display and game.Lots of high-performance interface to get very flexible solution, such as multi-channeldisplay including HDMI2.0a and TV Encoder (CVBS). TrustZone and crypto hardware areintegrated for security. 32bits DDR3/DDR3L/DDR4/LPDDR3 provides high memorybandwidth.
