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fix(i2c_master): Fix potential concurrency issue with task and interrupt when nack happens

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C.S.M
2024-07-24 11:00:49 +08:00
parent 0d9ea9cb6e
commit 4606003655
3 changed files with 7 additions and 6 deletions
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components/esp_driver_i2c/i2c_master.c
+7
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@@ -494,6 +494,13 @@ static void s_i2c_send_commands(i2c_master_bus_handle_t i2c_master, TickType_t t
if (xQueueReceive(i2c_master->event_queue, &event, ticks_to_wait) == pdTRUE) {
if (event == I2C_EVENT_DONE) {
atomic_store(&i2c_master->status, I2C_STATUS_DONE);
} else if (event == I2C_EVENT_NACK) {
// For i2c nack detected, the i2c transaction not finish.
// start->address->nack->stop
// So wait the whole transaction finishes, then quit the function.
while (i2c_ll_is_bus_busy(hal->dev)) {
__asm__ __volatile__("nop");
}
}
s_i2c_err_log_print(event, i2c_master->bypass_nack_log);
} else {