AMuxN怎么用啊？

只看该作者 · 2011-4-7 12:09

在CYC28中新加了AMuxN模块，可以超过八路信号输入，但是试了试发现，只要我修改一路信号，其他的信号都会跟着变，这是为什么呢？

只看该作者 · 2011-4-7 12:40

你是怎么试的呢？可以发code上来？

只看该作者 · 2011-4-7 16:19

本帖最后由 xpeter1987 于 2011-4-7 18:02 编辑

补充code
//----------------------------------------------------------------------------
// C main line
//----------------------------------------------------------------------------

#include <m8c.h>       // part specific constants and macros
#include "PSoCAPI.h" // PSoC API definitions for all User Modules

INT iData;

void adc_display(void)
{
                     INT i;
                     ADCINC12_Start(ADCINC12_HIGHPOWER);
                     ADCINC12_GetSamples(1);
                     while(ADCINC12_fIsDataAvailable() == 0);
                        ADCINC12_ClearFlag();
                     iData = ADCINC12_iGetData()+0x800;
                     for(i=0;i<20000;i++);
                     LCD_Position(0,6);
                     LCD_PrHexInt(iData);
                     ADCINC12_Stop();

}
void delay(void)
{
      INT i;
      for(i=0;i<50;i++);
}
void main(void)
{
      INT input_changer;
      input_changer = 0;

      M8C_EnableGInt ; // Uncomment this line to enable Global Interrupts

      PGA_Start(PGA_MEDPOWER);

      AMuxN_Start();

      LCD_Start();
      for(;;)
            {
                     switch(input_changer)
                     {
                     case 0:
                     {

                        AMuxN_InputSelect(AMuxN_PORT0,AMuxN_PIN1);
                     adc_display();
                     LCD_Position(1,6);
                     LCD_PrCString("0_0");
                     input_changer += 1 ;
                     break;
                     }

                     case 1:
                     {
                     AMuxN_InputSelect(AMuxN_PORT0, AMuxN_PIN3);
                        adc_display();
                     LCD_Position(1,6);
                     LCD_PrCString("0_1");
                     input_changer -= 1;
                     break;
                     }

                     case 2:
                     {
                     AMuxN_InputSelect(AMuxN_PORT0, AMuxN_PIN2);
                     delay();
                     adc_display();
                     LCD_Position(1,6);
                     LCD_PrCString("0_2");
                     input_changer += 1;
                     break;
                     }
                     case 3:
                     {

                     AMuxN_InputSelect(AMuxN_PORT0, AMuxN_PIN3);
                     delay();
                     adc_display();
                     LCD_Position(1,6);
                     LCD_PrCString("0_3");
                     input_changer += 1;
                     break;
                     }
                     case 4:
                     {
                     AMuxN_InputSelect(AMuxN_PORT0, AMuxN_PIN4);
                     delay();
                     adc_display();
                     LCD_Position(1,6);
                     LCD_PrCString("0_4");
                     input_changer += 1;
                     break;
                     }
                     case 5:
                     {
                     AMuxN_InputSelect(AMuxN_PORT0, AMuxN_PIN5);
                     delay();
                     adc_display();
                     LCD_Position(1,6);
                     LCD_PrCString("0_5");
                     input_changer += 1;
                     break;
                     }
                     case 6:
                     {
                     AMuxN_InputSelect(AMuxN_PORT0, AMuxN_PIN6);
                     delay();
                     adc_display();
                     LCD_Position(1,6);
                     LCD_PrCString("0_6");
                     input_changer += 1;
                     break;
                     }
                     case 7:
                     {
                     AMuxN_InputSelect(AMuxN_PORT0, AMuxN_PIN7);
                     delay();
                     adc_display();
                     LCD_Position(1,6);
                     LCD_PrCString("0_7");
                     input_changer += 1;
                     break;
                     }
                     case 8:
                     {
                     AMuxN_InputSelect(AMuxN_PORT1, AMuxN_PIN0);
                     delay();
                     adc_display();
                     LCD_Position(1,6);
                     LCD_PrCString("1_0");
                     input_changer = 0;
                     break;
                     }

                     default: input_changer = 0;
                     }


            }
}

只看该作者 · 2011-4-8 09:25

user module datasheet said:
This API only connects the specified pin to the bus, does not disconnect any pins from the bus.
So, before connnect a pin, you have to make sure all the other pins disconnect, if you don't want them connected.

只看该作者 · 2011-4-8 11:04

能否给一个具体的实例，特别是那个连线的图是怎么连接的？

AMuxN怎么用啊？

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