To abstract from the actual hardware that is used to run an example, some examples use BSP states instead of a fast assignment of LEDs to indicate states. In this way, examples can easily be tested on different boards, like the development board and the dongle. States are indicated in different ways depending on the hardware that is used.
The following table lists how the BSP states are indicated on PCA10028 and PCA10031:
| BSP state | PCA10028 | PCA10031 |
| BSP_INDICATE_IDLE | All LEDs are off | All LEDs are off |
| BSP_INDICATE_SCANNING | LED 1 is blinking (period 2 sec, duty cycle: 10%) | Red LED is blinking (period 2 sec, duty cycle: 10%) |
| BSP_INDICATE_ADVERTISING | LED 1 is blinking (period 2 sec, duty cycle: 10%) | Red LED is blinking (period 2 sec, duty cycle: 10%) |
| BSP_INDICATE_ADVERTISING_WHITELIST | LED 1 is blinking fast (period 1 sec, duty cycle: 20%) | Red LED is blinking fast (period 1 sec, duty cycle: 20%) |
| BSP_INDICATE_ADVERTISING_SLOW | LED 1 is blinking slowly (period 4.4 sec, duty cycle: 10%) | Red LED is is blinking slowly (period 4.4 sec, duty cycle: 10%) |
| BSP_INDICATE_ADVERTISING_DIRECTED | LED 1 is blinking very fast (period 0.6 sec, duty cycle: 50%) | Red LED is blinking very fast (period 0.6 sec, duty cycle: 50%) |
| BSP_INDICATE_BONDING | LED 1 is blinking (period 200 msec, duty cycle: 50%) | Red LED is blinking (period 200 msec, duty cycle: 50%) |
| BSP_INDICATE_CONNECTED | LED 1 is on | Red LED is on |
| BSP_INDICATE_SENT_OK | LED 2 is inverted for 100 msec | Green LED is inverted for 100 msec |
| BSP_INDICATE_SEND_ERROR | LED 2 is inverted for 500 msec | Green LED is inverted for 500 msec |
| BSP_INDICATE_RCV_OK | LED 2 is inverted for 100 msec | Green LED is inverted for 100 msec |
| BSP_INDICATE_RCV_ERROR | LED 2 is inverted for 500 msec | Green LED is inverted for 500 msec |
| BSP_INDICATE_FATAL_ERROR | All LEDs are on | All LEDs are on |
| BSP_INDICATE_USER_STATE_OFF | All LEDs are off | All LEDs are off |
| BSP_INDICATE_USER_STATE_0 | LEDs 2, 3, and 4 are off, LED 1 is on | Green and blue LEDs are off, red LED is on |
| BSP_INDICATE_USER_STATE_1 | LEDs 1, 3, and 4 are off, LED 2 is on | Red and blue LED are off, green LED is on |
| BSP_INDICATE_USER_STATE_2 | LEDs 3 and 4 are off, LEDs 1 and 2 are on | Blue LED is off, red and green LEDs are on |
| BSP_INDICATE_USER_STATE_3 | All LEDs are on | All LEDs are on |
| BSP_INDICATE_USER_STATE_ON | All LEDs are on | All LEDs are on |
The following BSP alerts can be indicated on top of the states described in the previous table:
| BSP alert | PCA10028 | PCA10031 |
| BSP_INDICATE_ALERT_0 | LED 3 is blinking (period 1200 msec, duty cycle: 50%) | Blue LED is blinking (period 1200 msec, duty cycle: 50%) |
| BSP_INDICATE_ALERT_1 | LED 3 is blinking (period 800 msec, duty cycle: 50%) | Blue LED is blinking (period 800 msec, duty cycle: 50%) |
| BSP_INDICATE_ALERT_2 | LED 3 is blinking (period 400 msec, duty cycle: 50%) | Blue LED is blinking (period 400 msec, duty cycle: 50%) |
| BSP_INDICATE_ALERT_3 | LED 3 is on | Blue LED is on |
| BSP_INDICATE_ALERT_OFF | LED 3 is off | Blue LED is off |
1.8.3.1 
