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SourceVuESP-IDF Framework and ExamplesESP-IDFi2c_obj_t::cmd_mux

i2c_obj_t::cmd_mux field

semaphore to lock command process

Syntax

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Summary

Declaration

SemaphoreHandle_t cmd_mux;

References

Code

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Referrer

SemaphoreHandle_t cmd_mux; /*!< semaphore to lock command process */

p_i2c->cmd_mux = xSemaphoreCreateMutex();

i2c_driver_install()

if (p_i2c->cmd_mux == NULL || p_i2c->cmd_evt_queue == NULL) {

i2c_driver_install()

if (p_i2c_obj[i2c_num]->cmd_mux) {

i2c_driver_install()

vSemaphoreDelete(p_i2c_obj[i2c_num]->cmd_mux);

i2c_driver_install()

if (p_i2c->cmd_mux) {

i2c_driver_delete()

xSemaphoreTake(p_i2c->cmd_mux, portMAX_DELAY);

i2c_driver_delete()

xSemaphoreGive(p_i2c->cmd_mux);

i2c_driver_delete()

vSemaphoreDelete(p_i2c->cmd_mux);

i2c_driver_delete()

BaseType_t res = xSemaphoreTake(p_i2c->cmd_mux, ticks_to_wait);

i2c_master_cmd_begin()

xSemaphoreGive(p_i2c->cmd_mux);

i2c_master_cmd_begin()

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Data Use

i2c_obj_t::cmd_mux is written by 1 function and is read by 3 functions:

i2c_driver_install()

i2c_obj_t::cmd_mux

i2c_driver_install()

i2c_driver_delete()

i2c_master_cmd_begin()

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