ThingMagic Mercury xPRESS Platform v1.7 - Manual (Page 70)

Status Indication Through GPI Lines
A D I V I S I O N O F T R I M B L E
70 Using the Optional Modules

For the WiFi module, it is used to monitor association status and TCP connection
status
void GPIMGR_unregisterPin(uint32_t gpio_idx)

Used to unregister the GPI line that is being monitored
bool GPIMGR_getValue(uint32_t gpio_idx)

Used to get the GPI line current state
uint32_t GPIMGR_getTogglePeriodMs(uint32_t gpio_idx)

Used to get the current frequency of a pin’s blinking
void GPIMGR_addStateListener(uint32_t gpio_idx, void* gpio_handler)
 Used to add listener call back for monitoring GPI line state changes