fix(touch): fixed channel offset issue in touch v2

Author: L-KAYA

components/esp_driver_touch_sens/common/touch_sens_private.h

@@ -30,7 +30,7 @@ extern "C" {
 /* Helper macros */
 #define TOUCH_NULL_POINTER_CHECK(p)     ESP_RETURN_ON_FALSE((p), ESP_ERR_INVALID_ARG, TAG, "input parameter '"#p"' is NULL")
 #define TOUCH_NULL_POINTER_CHECK_ISR(p) ESP_RETURN_ON_FALSE_ISR((p), ESP_ERR_INVALID_ARG, TAG, "input parameter '"#p"' is NULL")
-#define FOR_EACH_TOUCH_CHANNEL(i)       for (int i = 0; i < SOC_TOUCH_SENSOR_NUM; i++)
+#define FOR_EACH_TOUCH_CHANNEL(i)       for (int i = 0; i < TOUCH_TOTAL_CHAN_NUM; i++)
 #define TOUCH_IRAM_CHECK(cb)            (!(cb) || esp_ptr_in_iram(cb))
 
 /* IRAM safe caps */

components/esp_driver_touch_sens/hw_ver2/touch_version_specific.c

@@ -64,9 +64,12 @@ void IRAM_ATTR touch_priv_default_intr_handler(void *arg)
     touch_base_event_data_t data;
     touch_ll_get_active_channel_mask(&data.status_mask);
     uint32_t curr_chan = touch_ll_get_current_meas_channel();
+    if (curr_chan == 0) {
+        return;
+    }
     /* It actually won't be out of range in the real environment, but limit the range to pass the coverity check */
-    curr_chan = curr_chan >= SOC_TOUCH_SENSOR_NUM ? SOC_TOUCH_SENSOR_NUM - 1 : curr_chan;
-    data.chan = g_touch->ch[curr_chan];
+    uint32_t curr_chan_offset = (curr_chan >= SOC_TOUCH_SENSOR_NUM ? SOC_TOUCH_SENSOR_NUM - 1 : curr_chan) - TOUCH_MIN_CHAN_ID;
+    data.chan = g_touch->ch[curr_chan_offset];
     /* If the channel is not registered, return directly */
     if (!data.chan) {
         return;

components/esp_driver_touch_sens/include/driver/touch_sens_types.h

@@ -16,14 +16,14 @@
 extern "C" {
 #endif
 
-#define TOUCH_TOTAL_CHAN_NUM        SOC_TOUCH_SENSOR_NUM                /*!< The total channel number of the touch sensor */
 #define TOUCH_SAMPLE_CFG_NUM        SOC_TOUCH_SAMPLE_CFG_NUM            /*!< The supported max sample configuration number */
 #if SOC_TOUCH_SUPPORT_PROX_SENSING
 #define TOUCH_PROXIMITY_CHAN_NUM    SOC_TOUCH_PROXIMITY_CHANNEL_NUM     /*!< The supported proximity channel number in proximity sensing mode */
 #endif
 
 #define TOUCH_MIN_CHAN_ID           SOC_TOUCH_MIN_CHAN_ID               /*!< The minimum available channel id of the touch pad */
 #define TOUCH_MAX_CHAN_ID           SOC_TOUCH_MAX_CHAN_ID               /*!< The maximum available channel id of the touch pad */
+#define TOUCH_TOTAL_CHAN_NUM        (TOUCH_MAX_CHAN_ID - TOUCH_MIN_CHAN_ID + 1) /*!< The total channel number of the touch sensor */
 
 /**
  * @brief The chip sleep level that allows the touch sensor to wake-up