Input/Output
pinSetDriveStrength()
Since 2.0.0:
// PROTOTYPE
int pinSetDriveStrength(pin_t pin, DriveStrength drive);
Sets the pin drive strength on Gen 3 devices with Device OS 2.0.0 and later.
DriveStrength is one of:
DriveStrength::DEFAULT(STANDARD)DriveStrength::STANDARDDriveStrength::HIGH
Returns SYSTEM_ERROR_NONE (0) on success, or a non-zero system error code on error.
The drive strength is typically 2 mA in standard drive mode (the default), and 9 mA in high drive mode.
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Current at GND+0.4 V, output set low, high drive | IOL,HDL | V3V3 >= 2.7V | 6 | 10 | 15 | mA |
| Current at V3V3-0.4 V, output set high, high drive | IOH,HDH | V3V3 >= 2.7V | 6 | 9 | 14 | mA |
| Current at GND+0.4 V, output set low, standard drive | IOL,SD | V3V3 >= 2.7V | 1 | 2 | 4 | mA |
| Current at V3V3-0.4 V, output set high, standard drive | IOH,SD | V3V3 >= 2.7V | 1 | 2 | 4 | mA |
Gen 3 Devices (B Series SoM, Tracker SoM, Tracker One, Boron, Argon, and E404X):
- Pin drive strength setting is only available on Gen 3 devices (nRF52840).
- On the P2 and Photon 2, the pin drive strength is always 16 mA.
- On Gen 2 devices (Photon, P1, Electron, and E Series) the pin drive strength is always 25 mA.