TI中文支持网GPIO_SetupPinOptions(17,GPIO_OUTPUT,GPIO_PUSHPULL);
GPIO_SetupPinMux(17,GPIO_MUX_CPU1,0);
就是说上面的17，应该不是对应的GPIO口吧……看函数注释没看懂…..
Terry Deng：
//Set the peripheral muxing for the specified pin. The appropriate //parameters can be found in the GPIO Muxed Pins table(4.4) in the datasheet. //Use the GPIO index row (0 to 15) to select a muxing option for the GPIO.
void GPIO_SetupPinMux(Uint16 pin, Uint16 cpu, Uint16 peripheral)
//Setup up the GPIO input/output options for the specified pin. //The flags are a 16-bit mask produced by ORing together options. //For input pins, the valid flags are: //GPIO_PULLUP Enable pull-up //GPIO_INVERT Enable input polarity inversion //GPIO_SYNC Synchronize the input latch to PLLSYSCLK (default — you don't need to specify this) //GPIO_QUAL3 Use 3-sample qualification //GPIO_QUAL6 Use 6-sample qualification //GPIO_ASYNC Do not use synchronization or qualification //(Note: only one of SYNC, QUAL3, QUAL6, or ASYNC is allowed) // //For output pins, the valid flags are: //GPIO_OPENDRAIN Output in open drain mode //GPIO_PULLUP If open drain enabled, also enable the pull-up //and the input qualification flags (SYNC/QUAL3/QUAL6/SYNC) listed above. // //With no flags, the default input state is synchronous with no //pull-up or polarity inversion. The default output state is //the standard digital output.
void GPIO_SetupPinOptions(Uint16 pin, Uint16 output, Uint16 flags)
GPIO_SetupPinOptions(17,GPIO_OUTPUT,GPIO_PUSHPULL);
GPIO_SetupPinMux(17,GPIO_MUX_CPU1,0);
就是说上面的17，应该不是对应的GPIO口吧……看函数注释没看懂…..
Liliang Zhong1：
回复 Terry Deng:
其实我就是这些注释话没看懂，后面两个参数我懂，就是第一个参数是怎么对应到GPIO上的？
GPIO_SetupPinOptions(17,GPIO_OUTPUT,GPIO_PUSHPULL);
GPIO_SetupPinMux(17,GPIO_MUX_CPU1,0);
就是说上面的17，应该不是对应的GPIO口吧……看函数注释没看懂…..
zhaoyi chen：就是指GPIO 17，例程中都是这么写的
