will nrf24le1 impossible to design a low stanby remote controller ?

RE: will nrf24le1 impossible to design a low stanby remote controller ?

Asbjørn — Mon, 20 Oct 2014 12:24:18 GMT

WUOPCx will only enable the pins as a wake up source, but not change the active value for the reset. All pins are by default (once configured by WUOPCx) active high. Some of them can be set to active low. Please have a look in table 65 in the nRF24LE1 product specification.

So you can't use all buttons as wake up source if they are configured to pull a pin LOW to wake up the chip. Some of these pins can do this, but it's a subset of the pins.

RE: will nrf24le1 impossible to design a low stanby remote controller ?

sam — Tue, 14 Oct 2014 11:02:29 GMT

IS the mcu can not wake up from low by config OPMCON = 0x06;?

RE: will nrf24le1 impossible to design a low stanby remote controller ?

sam — Mon, 13 Oct 2014 15:20:57 GMT

but when WUOPCx inverted , they will never be able to wake up by press keys. also when wake up pwrdwn=1 should reset the mcu? but the mcu never reset.

RE: will nrf24le1 impossible to design a low stanby remote controller ?

Asbjørn — Mon, 13 Oct 2014 13:11:56 GMT

WUOPCx should be inverted. A value of 1 in WUOPCx will set the pin as wakeup source and with all the pullups enables you will wake up immediately from power down.

RE: will nrf24le1 impossible to design a low stanby remote controller ?

sam — Sat, 11 Oct 2014 11:01:25 GMT

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

RE: will nrf24le1 impossible to design a low stanby remote controller ?

sam — Sat, 11 Oct 2014 11:00:17 GMT

void main(void) { P0DIR = 0xff; P1DIR = 0x3f; PWRDWN = 0; OPMCON= 0x00; P1CON = 0x50;
P1CON = 0x51;
P1CON = 0x52;
P1CON = 0x53;
P1CON = 0x54;
P1CON = 0x55;
P0CON = 0x50;
P0CON = 0x51;
P0CON = 0x52;
P0CON = 0x53;
P0CON = 0x54;
P0CON = 0x55;
P0CON = 0x56;
P0CON = 0x57;

	rf_init();								                       
 	EA=1;  
	LED1=1;
	delay(50);

	TX_Mode();								
	while (!(TX_DS|MAX_RT));				
	sta = 0;
	PD_Mode();							
	delay(50);
	
	LED1=0;   
    WUOPC0 = 0XFF; 
    WUOPC1 = 0X3F;                            
    OPMCON = 0x06;
	PWRDWN = 0x01;
 	while(1);

}

also I ve try folowing code:

void main(void) { P0 = 0x00; P1 = 0x00; P0DIR = 0xff; P1DIR = 0x3f; PWRDWN = 0; OPMCON= 0x00; P1CON = 0x50;
P1CON = 0x51;
P1CON = 0x52;
P1CON = 0x53;
P1CON = 0x54;
P1CON = 0x55;
P0CON = 0x50;
P0CON = 0x51;
P0CON = 0x52;
P0CON = 0x53;
P0CON = 0x54;
P0CON = 0x55;
P0CON = 0x56;
P0CON = 0x57;
LED1=1; delay(500);

LED1=0;   
    WUOPC0 = 0XFF; 
    WUOPC1 = 0X3F;                            
    OPMCON = 0x06;
PWRDWN = 0x01;
 	while(1);

}

it also failed to enter sleep

RE: will nrf24le1 impossible to design a low stanby remote controller ?

Asbjørn — Wed, 24 Sep 2014 12:47:30 GMT

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.