12.17 Low Battery LED Flash Rate Parameter

The low battery LED Flash rate parameter works along with high battery level parameter, and normal battery threshold parameter settings control the rate at which the internal logic of the IS187x device toggles the GPIO pin, P2_0, high or low, when the battery voltage crosses a certain low voltage threshold. After connecting an LED to GPIO pin, P2_0, there is a visual indication of the low voltage condition, as the GPIO pin toggles at the programmed interval (Flash rate).

If the user does not set the corresponding LED parameter values, ignore this parameter. The GPIO pin, P2_0, toggles if the parameters are properly configured, however, the visual indication requires a user to connect an LED to the GPIO pin, P2_0. For more details on the electrical characteristics of the GPIO pin, P2_0, refer to the BM70/71 Bluetooth® Low Energy (BLE) Module Data Sheet (DS60001372).

The normal battery threshold parameter represents the voltage level considered to be normal or nominal,a and considers anything below this number as low battery conditions. When the IS187x device detects a voltage value lower than this parameter, use the low-battery LED Flash rate parameter to commence LED operation.