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esp_hf_ag_devices_status_indchange() function
Unsolicited send device status notification to HFP Client. As a precondition to use this API, Service Level Connection shall exist with HFP client.
Syntax
esp_err_t esp_hf_ag_devices_status_indchange(esp_bd_addr_t remote_addr,
esp_hf_call_status_t call_state,
esp_hf_call_setup_status_t call_setup_state,
esp_hf_network_state_t ntk_state,
int signal) __attribute__((
deprecated("Please use esp_hf_ag_ciev_report")
));
Return value
- ESP_OK: device status notification is sent to lower layer - ESP_ERR_INVALID_STATE: if bluetooth stack is not yet enabled - ESP_ERR_INVALID_ARG: if arguments are invalid - ESP_FAIL: others