feat(i2c): Add method to access the I2C bus handle

Author: me-no-dev

cores/esp32/esp32-hal-i2c-ng.c

@@ -56,6 +56,13 @@ static bool i2cDetachBus(void *bus_i2c_num) {
   return true;
 }
 
+void * i2cBusHandle(uint8_t i2c_num) {
+  if (i2c_num >= SOC_I2C_NUM) {
+    return NULL;
+  }
+  return bus[i2c_num].bus_handle;
+}
+
 bool i2cIsInit(uint8_t i2c_num) {
   if (i2c_num >= SOC_I2C_NUM) {
     return false;

cores/esp32/esp32-hal-i2c.h

@@ -19,6 +19,7 @@
 
 #include "soc/soc_caps.h"
 #if SOC_I2C_SUPPORTED
+#include "esp_idf_version.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -39,6 +40,10 @@ esp_err_t i2cWriteReadNonStop(
 );
 bool i2cIsInit(uint8_t i2c_num);
 
+#if ESP_IDF_VERSION >= ESP_IDF_VERSION_VAL(5, 4, 0)
+void * i2cBusHandle(uint8_t i2c_num);
+#endif
+
 #ifdef __cplusplus
 }
 #endif