will nrf24le1 impossible to design a low stanby remote controller ?

[sam]

I meet problems:

1. how to make all IO as input pull up??? like

P0DIR=0xFF;

P1DIR=0xFF;

P0CON = 0x50;

P0CON = 0x51;

..........??

how can I make all pins pull up? it seems only one pin can be pull up.

2. how can I enable all pins wake up when LOW? the key will connect pin to GND when pressed.

   OPMCON= 0x00; // unlock needed?

    WUOPC0 = 0XFF;//
   
    WUOPC1 = 0XFF;//
                                 
    OPMCON = 0x06;// lock?
   

3. how to enter standby? like following?

   PWRDWN = 0x04;

    delay(100);
    ................
   

4. is read the pin value like this?

unsigned char pin0value= P0;

unsigned char pin1value= P1;

the pin value I read is in change(not pull up all pins sucessfully?)

This is a simple function but I still can not make it working.......... so please help.

[Asbjørn]

1: The pull up/down can be individually set in P0CON registers. The configurations are chosen in bit 6:5 and then with bit 2:= you address which pin you want this configuration to. So if you want to set 5 pins as pull up you have to write to P0CON 5 times. One for each pin.

2: Not all pins can be used a active low. Which pins are available as active low is described in nRF24LE1 prod spec table 65 on page 116.

3: Have a look at the deep sleep example in the FAQ.

4: The above FAQ also shows how to read and use a pin as wake up source.

[sam]

it still with problems, can not enter sleep mode and reset when key down. please see below code. thanks. the mcu is QFN32