B4R Question GPRS shield power up /down with code

Tayfur · Nov 22, 2016

I used this shield. and WEMOS board
http://www.geeetech.com/wiki/index.php/Arduino_GPRS_Shield

How can i Power up/down with code.

İ try t. So. code dont work.

B4X:

Public Sub GSM_POWER(ONOFF As Boolean) As Boolean
    If ONOFF=True Then
        'power up
        led.DigitalWrite(True)
        Log("sim 900 sinya verildi ")
        led.digitalWrite(False)
         Delay(1000)
         led.digitalWrite(True)
         Delay(2000)
         led.digitalWrite(False)
         Delay(3000)
        Log("sim 900 sinya kesildi ")
        'GSM.Init(GSM_TX, GSM_RX)
        GSM.Init(wemos.D6, wemos.D5)
    Else
        'power down
         led.digitalWrite(False)
         Delay(1000)
         led.digitalWrite(True)
         Delay(2000)
         led.digitalWrite(False)
         Delay(3000)
    End If
    Return True
End Sub

Erel · Nov 22, 2016

Why are you starting with high output? It is not the same as in this code:

B4X:

void powerUp()
{
pinMode(9, OUTPUT);
digitalWrite(9,LOW);
delay(1000);
digitalWrite(9,HIGH);
delay(2000);
digitalWrite(9,LOW);
delay(3000);
}

Tayfur · Nov 22, 2016

Erel said:
Why are you starting with high output? It is not the same as in this code:

B4X:

void powerUp() { pinMode(9, OUTPUT); digitalWrite(9,LOW); delay(1000); digitalWrite(9,HIGH); delay(2000); digitalWrite(9,LOW); delay(3000); }

I want open SIM900 use for :
(I dont want control with hand button, "Power key"- power up and down for SIM900)

D9 - Used for software control the power up or down of the SIM900

I converted your code.
So; it same my #1 post's code.

B4X:

Public Sub Power_Up
   'wemos.D7 >>>> connect to >>>> GPRS Shiled Pin9
   Led.intilize(wemos.D7,led.MODE_OUTPUT)
   led.digitalwrite(false)
   delay(1000)
   led.digitalwrite(true)
   Delay(2000)
   led.digitalwrite(false)
   Delay(3000)
end sub

Erel · Nov 23, 2016

Your code looks correct. It is the same is in the tutorial you posted. Based on that tutorial you also need to solder the jumper.

Tayfur · Nov 23, 2016

Code works for RX-TX ;
D5 & D6 connected Shield. GND-GND connection Ok

After wemos.D7 connected Sield pin9. After I run Powerup code on start.
it didnt work!!!

Tayfur · Nov 24, 2016

I SOLVED IT.

If use this way to power up the GPRS Shield, JP need to be soldered, then Digital Pin 9 of the Arduino will act as Software Triger port and Digital Pin 9 can not be use as other purpose. Then give Digital Pin 9 a Turn on Impulse can power up the GPRS Shield.

Some bords has different location on borads.(My board location is different. ) . You must find this location. After, finally same way like JP.

this very important point for using Pin9 on GSM shiled.

B4R Question GPRS shield power up /down with code

Tayfur

Well-Known Member

Erel

B4X founder

Tayfur

Well-Known Member

Erel

B4X founder

Tayfur

Well-Known Member

Tayfur

Well-Known Member

Similar Threads

B4R Question GPRS shield power up /down with code

Tayfur

Well-Known Member

Erel

B4X founder

Tayfur

Well-Known Member

Erel

B4X founder

Tayfur

Well-Known Member

Tayfur

Well-Known Member

Similar Threads

Privacy & Transparency

Privacy & Transparency