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SourceVuESP-IDF Framework and ExamplesESP-IDFesp_hf_client_query_current_calls()

esp_hf_client_query_current_calls() function

Query list of current calls in AG(send AT+CLCC command). As a precondition to use this API, Service Level Connection shall exist with AG.

Syntax

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Summary

Declaration

from esp_hf_client_api.h:558

esp_err_t esp_hf_client_query_current_calls(void);

Return value

- ESP_OK: query of current calls is sent to lower layer - ESP_ERR_INVALID_STATE: if bluetooth stack is not yet enabled - ESP_FAIL: others

Examples

esp_hf_client_query_current_calls() is referenced by 1 libraries and example projects:

hfp_hf sample

References

from 0/1 examples

Code

Location

esp_err_t esp_hf_client_query_current_calls(void)

esp_hf_client_api.c:338

esp_err_t esp_hf_client_query_current_calls(void);

esp_hf_client_api.h:558

Call Tree

from 0/1 examples

esp_hf_client_query_current_calls() calls 2 functions:

esp_hf_client_query_current_calls()

btc_transfer_context()

esp_bluedroid_get_status()

Data Use

from 0/1 examples

esp_hf_client_query_current_calls() reads 5 variables and writes 3 variables:

btc_sig_t::BTC_SIG_API_CALL

btc_pid_t::BTC_PID_HF_CLIENT

esp_bluedroid_status_t::ESP_BLUEDROID_STATUS_ENABLED

bt_status_t::BT_STATUS_SUCCESS

btc_hf_client_act_t::BTC_HF_CLIENT_QUERY_CURRENT_CALLS_EVT

esp_hf_client_query_current_calls()

btc_msg::sig

btc_msg::pid

btc_msg::act

Class Tree

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Override Tree

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Implementations

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Instances

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Lifecycle

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