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标题: 在CCS C的函数库中,output_float()和output_high有和区别? [打印本页]

作者: winnie 时间: 2009-4-20 12:49
标题: 在CCS C的函数库中,output_float()和output_high有和区别?
OUTPUT_FLOAT()

Syntax:	output_float (*pin*)
Parameters:	*Pins* are defined in the devices .h file. The actual value is a bit address. For example, port a (byte 5) bit 3 would have a value of 5*8+3 or 43. This is defined as follows: #define PIN_A3 43
Returns:	undefined
Function:	Sets the specified pin to the input mode. This will allow the pin to float high to represent a high on an open collector type of connection.

作者: winnie 时间: 2009-4-20 12:49
output_float()和output_high
前一个函数是使控制脚变为输入脚，后一函数是使控制脚变为高电平

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