User Manual

Getting Started With EZ-
www.cypress.com Document No.: 001-96841 Rev. ** 40
Figure 51. Bluetooth Low Energy IAS Event Handler Firmware
Ma i n Lo o p a nd L ow Pow e r O p er a ti o n
The main loop firmware in your design must periodically service the BLE stack processing event and configure the BLESS
block and the EZ-BLE PRoC Module system into the Low Power mode between connection intervals. Figure 52 and Figure 53
show the main loop flowchart and firmware.
#define NO_ALERT (0u)
#define MILD_ALERT (1u)
#define HIGH_ALERT (2u)
#define BLINK_TIMEOUT (100u)
#define LED_NO_ALERT (200u)
#define LED_MILD_ALERT (100u)
#define LED_HIGH_ALERT (0u)
uint8 alertLevel;
void IasEventHandler(uint32 event, void* eventParam)
{
/* Alert Level Characteristic write event */
if(event == CYBLE_EVT_IASS_WRITE_CHAR_CMD)
{
/* Data structure that is returned as eventParam */
CYBLE_IAS_CHAR_VALUE_T *charValue =
(CYBLE_IAS_CHAR_VALUE_T *)eventParam;
/* Extract Alert Level value from the data structure */
alertLevel = *((charValue->value->val));
}
}