Mirrors/esp-idf
1
0
Fork 0
mirror of https://github.com/espressif/esp-idf.git synced 2026-10-01 18:50:34 +03:00
Code Issues Packages Projects Releases Wiki Activity

fix(i2c_master): Add i2c master timeout range check

Browse Source 
Closes https://github.com/espressif/esp-idf/issues/17930
This commit is contained in:
Chen Chen
2025-12-10 17:55:59 +08:00
parent b389ca9ada
commit 8ad7d769aa
11 changed files with 37 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
components/esp_driver_i2c/i2c_master.c
+17
View File
@@ -5,6 +5,7 @@
*/
#include <string.h>
#include <inttypes.h>
#include <sys/param.h>
#include <sys/lock.h>
#include "sdkconfig.h"
@@ -606,6 +607,16 @@ static void s_i2c_send_command_async(i2c_master_bus_handle_t i2c_master, BaseTyp
i2c_hal_master_trans_start(hal);
}
static inline bool s_i2c_timeout_range_check(uint32_t *timeout_us, uint32_t sclk_clock_hz)
{
uint32_t max_timeout_us = (I2C_LL_MAX_TIMEOUT_PERIOD * 1000000ULL) / sclk_clock_hz;
if (*timeout_us > max_timeout_us) {
*timeout_us = max_timeout_us;
return true;
}
return false;
}
static esp_err_t s_i2c_transaction_start(i2c_master_dev_handle_t i2c_dev, int xfer_timeout_ms)
{
i2c_master_bus_handle_t i2c_master = i2c_dev->master_bus;
@@ -634,6 +645,7 @@ static esp_err_t s_i2c_transaction_start(i2c_master_dev_handle_t i2c_dev, int xf
}
// Set the timeout value
bool timeout_range_exceeded = s_i2c_timeout_range_check(&i2c_dev->scl_wait_us, i2c_master->base->clk_src_freq_hz);
i2c_hal_master_set_scl_timeout_val(hal, i2c_dev->scl_wait_us, i2c_master->base->clk_src_freq_hz);
i2c_ll_master_set_fractional_divider(hal->dev, 0, 0);
@@ -643,6 +655,11 @@ static esp_err_t s_i2c_transaction_start(i2c_master_dev_handle_t i2c_dev, int xf
i2c_ll_rxfifo_rst(hal->dev);
i2c_ll_enable_intr_mask(hal->dev, I2C_LL_MASTER_EVENT_INTR);
portEXIT_CRITICAL(&i2c_master->base->spinlock);
if (timeout_range_exceeded) {
ESP_LOGW(TAG, "Timeout value exceeds the maximum supported value, rounded down to maximum supported value: %" PRIu32 " us", i2c_dev->scl_wait_us);
}
if (i2c_master->async_trans == true) {
s_i2c_send_command_async(i2c_master, NULL);
} else {