LM3S9B92通用输入输出口的使用

目 录

第 1 章

通用输入输出(GPIO)..................................................................................1

1.1 GPIO概述 .....................................................................................................................1

1.2 各种模式下的GPIO .....................................................................................................2

1.3 GPIO库函数及例程 .....................................................................................................4

i

第1章 通用输入输出(GPIO)

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void GPIOPadConfigGet(unsigned long ulPort, unsigned char ucPin,

unsigned long *pulStrength, unsigned long *pulPadType)

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void GPIOPinTypeGPIOInput(unsigned long ulPort, unsigned char ucPins)

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void GPIOPinTypeGPIOOutput(unsigned long ulPort, unsigned char ucPins)

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void GPIOPinTypeGPIOOutputOD(unsigned long ulPort, unsigned char ucPins)

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void GPIOPinTypeI2C(unsigned long ulPort, unsigned char ucPins)

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void GPIOPinTypePWM(unsigned long ulPort, unsigned char ucPins)

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void GPIOPinTypeQEI(unsigned long ulPort, unsigned char ucPins)

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void GPIOPinTypeSSI(unsigned long ulPort, unsigned char ucPins)

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void GPIOPinTypeTimer(unsigned long ulPort, unsigned char ucPins)

long GPIOPinRead(unsigned long ulPort, unsigned char ucPins)

void GPIOIntTypeSet(unsigned long ulPort, unsigned char ucPins, unsigned long ulIntType)

unsigned long GPIOIntTypeGet(unsigned long ulPort, unsigned char ucPin)

void GPIOPinIntEnable(unsigned long ulPort, unsigned char ucPins)

void GPIOPinIntDisable(unsigned long ulPort, unsigned char ucPins)

void GPIOPortIntUnregister(unsigned long ulPort)

8 个物理 GPIO 块组成，一块对应一个 GPIO 端口（PA、PB、PC、PD、PE、PF、PG、PH）。

每个 GPIO 端口包含 8 个管脚，如 PA 端口是 PA0～PA7。GPIO 模块遵循 FiRM（Foundation

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z 输入/输出可承受 5V

z 可编程控制 GPIO 管脚配置：

在 Stellaris 系列 ARM 里，GPIO 管脚可以被配置为多种工作模式，其中有 3 种比较常

用：高阻输入、推挽输出、开漏输出。