espressif/esp-idf
1
0
Fork 0
mirror of https://github.com/espressif/esp-idf.git synced 2026-04-27 19:13:21 +00:00
Code Issues Packages Projects Releases Wiki Activity

Merge branch 'fix/i2c_nack_c5_v5.3' into 'release/v5.3'

Browse Source 
fix(i2c_master): Fix potential concurrency issue with task and interrupt when nack happens (v5.3)

See merge request espressif/esp-idf!46485
This commit is contained in:
Jiang Jiang Jian
2026-03-25 10:48:56 +08:00
parent df8ddf2f65 486f843814
commit e2be25ecc4
1 changed files with 7 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
components/esp_driver_i2c/i2c_master.c
+7
View File
@@ -535,6 +535,13 @@ 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 {