Sleep Pin (on/off control) in RockBLOCK 9603 v3.F about sparkfun_iridiumsbd_i2c_arduino_library

[PaulZC]

Hi Alex (@alexburgis ),

Good to meet you. Thanks for the update. We were aware of the issue and have been working with @adamgarbo to resolve it on his equipment.

In this library, the setSleepPin function is weak. Users can overwrite it if they want to or need to. As you say, a solution for the RockBLOCK 3.F and 3.3V microcontrollers is to insert an open-drain N-MOSFET or open-collector NPN transistor between the IO pin and the RockBLOCK On/Off pin. You can then invert the IO pin output inside setSleepPin by including the following code:

void IridiumSBD::setSleepPin(uint8_t enable)
{
   if (enable == HIGH)
  {
      digitalWrite(this->sleepPin, LOW);  // LOW = awake. Inverted by N-MOSFET
      diagprint(F("AWAKE\r\n"));
   }
   else
   {
      digitalWrite(this->sleepPin, HIGH); // HIGH = asleep. Inverted by N-MOSFET
      diagprint(F("ASLEEP\r\n"));
   }
}

I'm going to close this issue, but pin it to make it easier for users to find.

Very best wishes,
Paul