u16_get_can_listen_id()

Description

u16_get_can_listen_id() returns the CAN identifier of messages from the PC (default 0x765). The device and its bootloader will expect to receive bootloader protocol messages with this ID.

Syntax

u16_get_can_listen_id();

Parameters

none

Returns

uint16_t – the standard (11 bit) ID of messages from the PC.

Example Code

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

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

  uint16_t u16_can_listen_id = BOOTLOADER_SETTING.u16_get_can_listen_id();
  
  Serial.println("Current bootloader settings:");
  Serial.println(" - can listen id: 0x"+ String( u16_can_listen_id, HEX ));
  
  delay(2000);
  Serial.println("Modify the settings");
  BOOTLOADER_SETTING.u8_set_can_listen_id(0x765);
  
  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).