rpi_hal 树莓派的IO控制 pascal版代码

功能强大，直接虐死wiringPi的树莓派IO之pascal代码，包括GPIO，I2C，PWM等控制。rpi_hal-HardwareAbstractionLibrary(GPIO,I2CandSPIfunctionsandprocedures)ThisUnitwitharound1700LinesofCodeprovidedbyStefanFischer,deliversproceduresandfunctionstoaccesstherpiHWI2C,SPIandGPIO:Justanexcerptoftheavailablefunctionsandprocedures