I2C - Peripheral manager implementation (#8220)

* i2c-master periman initial commit

* i2c-master make detachbus static + comment remove

* i2c-slave periman implementation

* SetPinBus to INIT on i2cDeinits

* Fix slave pins deinit

* remove dbg logs

* set ret to ESP_FAIL instead of returning

Author: P-R-O-C-H-Y

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

@@ -42,6 +42,7 @@
 #include "hal/clk_gate_ll.h"
 #include "esp32-hal-log.h"
 #include "esp32-hal-i2c-slave.h"
+#include "esp32-hal-periman.h"
 
 #define I2C_SLAVE_USE_RX_QUEUE 0 // 1: Queue, 0: RingBuffer
 
@@ -194,7 +195,7 @@ static bool i2c_slave_handle_rx_fifo_full(i2c_slave_struct_t * i2c, uint32_t len
 static size_t i2c_slave_read_rx(i2c_slave_struct_t * i2c, uint8_t * data, size_t len);
 static void i2c_slave_isr_handler(void* arg);
 static void i2c_slave_task(void *pv_args);
-
+static bool i2cSlaveDetachBus(void * bus_i2c_num);
 
 //=====================================================================================================================
 //-------------------------------------- Public Functions -------------------------------------------------------------
@@ -231,6 +232,11 @@ esp_err_t i2cSlaveInit(uint8_t num, int sda, int scl, uint16_t slaveID, uint32_t
         frequency = 1000000;
     }
 
+    perimanSetBusDeinit(ESP32_BUS_TYPE_I2C_SLAVE, i2cSlaveDetachBus);
+    if(!perimanSetPinBus(sda, ESP32_BUS_TYPE_INIT, NULL) || !perimanSetPinBus(scl, ESP32_BUS_TYPE_INIT, NULL)){
+        return false;
+    }
+
     log_i("Initialising I2C Slave: sda=%d scl=%d freq=%d, addr=0x%x", sda, scl, frequency, slaveID);
 
     i2c_slave_struct_t * i2c = &_i2c_bus_array[num];
@@ -344,6 +350,10 @@ esp_err_t i2cSlaveInit(uint8_t num, int sda, int scl, uint16_t slaveID, uint32_t
     i2c_ll_slave_enable_rx_it(i2c->dev);
     i2c_ll_set_stretch(i2c->dev, 0x3FF);
     i2c_ll_update(i2c->dev);
+    if(!perimanSetPinBus(sda, ESP32_BUS_TYPE_I2C_SLAVE, (void *)(i2c->num+1)) || !perimanSetPinBus(scl, ESP32_BUS_TYPE_I2C_SLAVE, (void *)(i2c->num+1))){
+        i2cSlaveDetachBus((void *)(i2c->num+1));
+        ret = ESP_FAIL;
+    }
     I2C_SLAVE_MUTEX_UNLOCK();
     return ret;
 
@@ -367,7 +377,11 @@ esp_err_t i2cSlaveDeinit(uint8_t num){
     }
 #endif
     I2C_SLAVE_MUTEX_LOCK();
+    int scl = i2c->scl;
+    int sda = i2c->sda;
     i2c_slave_free_resources(i2c);
+    perimanSetPinBus(scl, ESP32_BUS_TYPE_INIT, NULL);
+    perimanSetPinBus(sda, ESP32_BUS_TYPE_INIT, NULL);
     I2C_SLAVE_MUTEX_UNLOCK();
     return ESP_OK;
 }
@@ -846,3 +860,17 @@ static void i2c_slave_task(void *pv_args)
     }
     vTaskDelete(NULL);
 }
+
+static bool i2cSlaveDetachBus(void * bus_i2c_num){
+    uint8_t num = (int)bus_i2c_num - 1;
+    i2c_slave_struct_t * i2c = &_i2c_bus_array[num];
+    if (i2c->scl == -1 && i2c->sda == -1) {
+        return true;
+    }
+    esp_err_t err = i2cSlaveDeinit(num);
+    if(err != ESP_OK){
+        log_e("i2cSlaveDeinit failed with error: %d", err);
+        return false;
+    }
+    return true;
+}

cores/esp32/esp32-hal-i2c.c

@@ -26,17 +26,33 @@
 #include "hal/i2c_hal.h"
 #include "hal/i2c_ll.h"
 #include "driver/i2c.h"
+#include "esp32-hal-periman.h"
 
 typedef volatile struct {
     bool initialized;
     uint32_t frequency;
 #if !CONFIG_DISABLE_HAL_LOCKS
     SemaphoreHandle_t lock;
+    int8_t scl;
+    int8_t sda;
 #endif
 } i2c_bus_t;
 
 static i2c_bus_t bus[SOC_I2C_NUM];
 
+static bool i2cDetachBus(void * bus_i2c_num){
+    uint8_t i2c_num = (int)bus_i2c_num - 1;
+    if(!bus[i2c_num].initialized){
+        return true;
+    }
+    esp_err_t err = i2cDeinit(i2c_num);
+    if(err != ESP_OK){
+        log_e("i2cDeinit failed with error: %d", err);
+        return false;
+    }
+    return true;
+}
+
 bool i2cIsInit(uint8_t i2c_num){
     if(i2c_num >= SOC_I2C_NUM){
         return false;
@@ -72,6 +88,12 @@ esp_err_t i2cInit(uint8_t i2c_num, int8_t sda, int8_t scl, uint32_t frequency){
     } else if(frequency > 1000000UL){
         frequency = 1000000UL;
     }
+
+    perimanSetBusDeinit(ESP32_BUS_TYPE_I2C_MASTER, i2cDetachBus);
+    if(!perimanSetPinBus(sda, ESP32_BUS_TYPE_INIT, NULL) || !perimanSetPinBus(scl, ESP32_BUS_TYPE_INIT, NULL)){
+        return false;
+    }
+
     log_i("Initialising I2C Master: sda=%d scl=%d freq=%d", sda, scl, frequency);
 
     i2c_config_t conf = { };
@@ -93,8 +115,14 @@ esp_err_t i2cInit(uint8_t i2c_num, int8_t sda, int8_t scl, uint32_t frequency){
         } else {
             bus[i2c_num].initialized = true;
             bus[i2c_num].frequency = frequency;
+            bus[i2c_num].scl = scl;
+            bus[i2c_num].sda = sda;
             //Clock Stretching Timeout: 20b:esp32, 5b:esp32-c3, 24b:esp32-s2
             i2c_set_timeout((i2c_port_t)i2c_num, I2C_LL_MAX_TIMEOUT);
+            if(!perimanSetPinBus(sda, ESP32_BUS_TYPE_I2C_MASTER, (void *)(i2c_num+1)) || !perimanSetPinBus(scl, ESP32_BUS_TYPE_I2C_MASTER, (void *)(i2c_num+1))){
+                i2cDetachBus((void *)(i2c_num+1));
+                return false;
+            }
         }
     }
 #if !CONFIG_DISABLE_HAL_LOCKS
@@ -122,6 +150,10 @@ esp_err_t i2cDeinit(uint8_t i2c_num){
         err = i2c_driver_delete((i2c_port_t)i2c_num);
         if(err == ESP_OK){
             bus[i2c_num].initialized = false;
+            perimanSetPinBus(bus[i2c_num].scl, ESP32_BUS_TYPE_INIT, NULL);
+            perimanSetPinBus(bus[i2c_num].sda, ESP32_BUS_TYPE_INIT, NULL);
+            bus[i2c_num].scl = -1;
+            bus[i2c_num].sda = -1;
         }
     }
 #if !CONFIG_DISABLE_HAL_LOCKS