Description

u8_get_local_id() returns the LID (local id) which is the unique address of this device on the CAN bus.

Syntax

u8_get_local_id();

Parameters

none

Returns

uint8_t – the local id of this device (default:1, range 1..62)

Example Code

This example shows how to read, set and store the ‘local id’ value of the bootloader settings.

void setup()
{  
  Serial.begin();
  while (!Serial) 
  {
    yield(); // wait for PC CAN2SER-monitor to open 
  }

  uint8_t u8_local_id = BOOTLOADER_SETTING.u8_get_local_id();
  
  Serial.println("Current bootloader settings:");
  Serial.println(" - own local id : "+ String( u8_local_id));
  
  delay(2000);
  Serial.println("Modify the settings");
  BOOTLOADER_SETTING.u8_set_local_id(1);
  
  delay(2000);
  Serial.println("Store the settings in flash");
  
  uint8_t u8_ret = BOOTLOADER_SETTING.u8_store_bootloader_settings();
  
  if(u8_ret != 0)
	Serial.println("Error writing into flash");
  
  Serial.println("DONE");
}

void loop () 
{
}

Notes and Warnings

This method returns the RAM copy value of the bootloader settings which are copied into the BOOTLOADER_SETTING object during its instantiation at system start (variant.cpp).

See also

u8_store_bootloader_settings()
u8_set_local_id()
SAMC21_CAN