[bsp/bouffalo_lab]add drv_i2c (#7473)

bsp/bouffalo_lab/libraries/rt_drivers/Kconfig

@@ -707,55 +707,277 @@ menu "General Drivers Configuration"
                 default n
         endif
 
-    menu "General Purpose I2C"
-    menuconfig BSP_USING_I2C1
-        bool "Enable I2C1"
-        default n
-        select BSP_USING_I2C
+    menuconfig BSP_USING_I2C
+        bool "Enable I2C"
         select RT_USING_I2C
-        select RT_USING_I2C_BITOPS
-        select RT_USING_PIN
-        if BSP_USING_I2C1
-            choice
-                prompt "I2C1 SCL PIN"
-                default I2C1_SCL_USING_GPIO4 if BSP_USING_BL60X
-                default I2C1_SCL_USING_GPIO10 if BSP_USING_BL61X
-                default I2C1_SCL_USING_GPIO08 if BSP_USING_BL70X
-                default I2C1_SCL_USING_GPIO20 if BSP_USING_BL808
+        default n
 
-                config I2C1_SCL_USING_GPIO0
-                    bool "GPIO_0"
-                config I2C1_SCL_USING_GPIO4
-                    bool "GPIO_4"
-                config I2C1_SCL_USING_GPIO8
-                    bool "GPIO_8"
-                config I2C1_SCL_USING_GPIO10
-                    bool "GPIO_10"
-                config I2C1_SCL_USING_GPIO20
-                    bool "GPIO_20"
+        if BSP_USING_I2C
+        menuconfig BSP_USING_I2C0
+            bool "Enable I2C0"
+            default n
+            if BSP_USING_I2C0
+                choice 
+                    prompt "I2C0 SCL"
+                    default I2C0_SCL_USING_GPIO14
 
-            endchoice
-            choice
-                prompt "I2C1 SDA PIN"
-                default I2C1_SDA_USING_GPIO3 if BSP_USING_BL60X
-                default I2C1_SDA_USING_GPIO11 if BSP_USING_BL61X
-                default I2C1_SDA_USING_GPIO7 if BSP_USING_BL70X
-                default I2C1_SDA_USING_GPIO21 if BSP_USING_BL808
+                    config I2C0_SCL_USING_GPIO0
+                        bool "GPIO_0"
+                    config I2C0_SCL_USING_GPIO2
+                        bool "GPIO_2"
+                    config I2C0_SCL_USING_GPIO4
+                        bool "GPIO_4"
+                    config I2C0_SCL_USING_GPIO6
+                        bool "GPIO_6"
+                    config I2C0_SCL_USING_GPIO8
+                        bool "GPIO_8"
+                    config I2C0_SCL_USING_GPIO8
+                        bool "GPIO_8"
+                    config I2C0_SCL_USING_GPIO10
+                        bool "GPIO_10"
+                    config I2C0_SCL_USING_GPIO12
+                        bool "GPIO_12"
+                    config I2C0_SCL_USING_GPIO14
+                        bool "GPIO_14"
+                    config I2C0_SCL_USING_GPIO16
+                        bool "GPIO_16"
+                    config I2C0_SCL_USING_GPIO18
+                        bool "GPIO_18"
+                    config I2C0_SCL_USING_GPIO20
+                        bool "GPIO_20"
+                    config I2C0_SCL_USING_GPIO22
+                        bool "GPIO_22"
+                    config I2C0_SCL_USING_GPIO24
+                        depends on BSP_USING_BL61X || BSP_USING_BL70X || BSP_USING_BL808
+                        bool "GPIO_8"
+                    config I2C0_SCL_USING_GPIO26
+                        depends on BSP_USING_BL61X || BSP_USING_BL70X || BSP_USING_BL808
+                        bool "GPIO_26"
+                    config I2C0_SCL_USING_GPIO28
+                        depends on BSP_USING_BL61X || BSP_USING_BL70X || BSP_USING_BL808
+                        bool "GPIO_28"
+                    config I2C0_SCL_USING_GPIO30
+                        depends on BSP_USING_BL61X || BSP_USING_BL70X || BSP_USING_BL808
+                        bool "GPIO_30"
+                    config I2C0_SCL_USING_GPIO32
+                        depends on BSP_USING_BL61X || BSP_USING_BL808
+                        bool "GPIO_32"
+                    config I2C0_SCL_USING_GPIO34
+                        depends on BSP_USING_BL61X || BSP_USING_BL808
+                        bool "GPIO_34"
+                    config I2C0_SDA_USING_GPIO36
+                        depends on BSP_USING_BL808
+                        bool "GPIO_36"
+                    config I2C0_SDA_USING_GPIO38
+                        depends on BSP_USING_BL808
+                        bool "GPIO_38"
+                    config I2C0_SDA_USING_GPIO40
+                        depends on BSP_USING_BL808
+                        bool "GPIO_40"
+                    config I2C1_SDA_USING_GPIO42
+                        depends on BSP_USING_BL808
+                        bool "GPIO_42"
+                    config I2C0_SDA_USING_GPIO44
+                        depends on BSP_USING_BL808
+                        bool "GPIO_44"
+                endchoice
 
-                config I2C1_SDA_USING_GPIO1
-                    bool "GPIO_1"
-                config I2C1_SDA_USING_GPIO3
-                    bool "GPIO_3"
-                config I2C1_SDA_USING_GPIO7
-                    bool "GPIO_7"
-                config I2C1_SDA_USING_GPIO11
-                    bool "GPIO_11"
-                config I2C1_SDA_USING_GPIO21
-                    bool "GPIO_21"
+                choice
+                    prompt "I2C0 SDA"
+                    default I2C0_SDA_USING_GPIO15
 
-            endchoice
+                    config I2C0_SDA_USING_GPIO1
+                        bool "GPIO_1"
+                    config I2C0_SDA_USING_GPIO3
+                        bool "GPIO_3"
+                    config I2C0_SDA_USING_GPIO5
+                        bool "GPIO_5"
+                    config I2C0_SDA_USING_GPIO7
+                        bool "GPIO_7"
+                    config I2C0_SDA_USING_GPIO9
+                        bool "GPIO_9"
+                    config I2C0_SDA_USING_GPIO11
+                        bool "GPIO_11"
+                    config I2C0_SDA_USING_GPIO13
+                        bool "GPIO_13"
+                    config I2C0_SDA_USING_GPIO15
+                        bool "GPIO_15"
+                    config I2C0_SDA_USING_GPIO17
+                        bool "GPIO_17"
+                    config I2C0_SDA_USING_GPIO19
+                        bool "GPIO_19"
+                    config I2C0_SDA_USING_GPIO21
+                        bool "GPIO_21"
+                    config I2C0_SDA_USING_GPIO23
+                        depends on BSP_USING_BL61X || BSP_USING_BL70X || BSP_USING_BL808
+                        bool "GPIO_23"                        
+                    config I2C0_SDA_USING_GPIO25
+                        depends on BSP_USING_BL61X || BSP_USING_BL70X || BSP_USING_BL808
+                        bool "GPIO_25"
+                    config I2C0_SDA_USING_GPIO27
+                        depends on BSP_USING_BL61X || BSP_USING_BL70X || BSP_USING_BL808
+                        bool "GPIO_27"
+                    config I2C0_SDA_USING_GPIO29
+                        depends on BSP_USING_BL61X || BSP_USING_BL70X || BSP_USING_BL808
+                        bool "GPIO_29"
+                    config I2C0_SDA_USING_GPIO31
+                        depends on BSP_USING_BL61X || BSP_USING_BL70X || BSP_USING_BL808
+                        bool "GPIO_31"
+                    config I2C0_SDA_USING_GPIO33
+                        depends on BSP_USING_BL61X || BSP_USING_BL808
+                        bool "GPIO_33"
+                    config I2C0_SDA_USING_GPIO35
+                        depends on BSP_USING_BL808
+                        bool "GPIO_35"
+                    config I2C0_SDA_USING_GPIO37
+                        depends on BSP_USING_BL808
+                        bool "GPIO_37"
+                    config I2C0_SDA_USING_GPIO39
+                        depends on BSP_USING_BL808
+                        bool "GPIO_39"
+                    config I2C0_SDA_USING_GPIO41
+                        depends on BSP_USING_BL808
+                        bool "GPIO_41"
+                    config I2C0_SDA_USING_GPIO43
+                        depends on BSP_USING_BL808
+                        bool "GPIO_43"
+                    config I2C0_SDA_USING_GPIO45
+                        depends on BSP_USING_BL808
+                        bool "GPIO_45"
+                    endchoice
+
+                config I2C0_FREQUENCY
+                    int "I2C0 Frequency"
+                    default 400000
+            endif
+
+        menuconfig BSP_USING_I2C1
+            depends on BSP_USING_BL61X || BSP_USING_BL808
+            bool "Enable I2C1"
+            default n
+            if BSP_USING_I2C1
+                choice 
+                    prompt "I2C1 SCL"
+                    default I2C1_SCL_USING_GPIO0
+
+                    config I2C1_SCL_USING_GPIO0
+                        bool "GPIO_0"
+                    config I2C1_SCL_USING_GPIO2
+                        bool "GPIO_2"
+                    config I2C1_SCL_USING_GPIO4
+                        bool "GPIO_4"
+                    config I2C1_SCL_USING_GPIO6
+                        bool "GPIO_6"
+                    config I2C1_SCL_USING_GPIO8
+                        bool "GPIO_8"
+                    config I2C1_SCL_USING_GPIO8
+                        bool "GPIO_8"
+                    config I2C1_SCL_USING_GPIO10
+                        bool "GPIO_10"
+                    config I2C1_SCL_USING_GPIO12
+                        bool "GPIO_12"
+                    config I2C1_SCL_USING_GPIO14
+                        bool "GPIO_14"
+                    config I2C1_SCL_USING_GPIO16
+                        bool "GPIO_16"
+                    config I2C1_SCL_USING_GPIO18
+                        bool "GPIO_18"
+                    config I2C1_SCL_USING_GPIO20
+                        bool "GPIO_20"
+                    config I2C1_SCL_USING_GPIO22
+                        bool "GPIO_22"
+                    config I2C1_SCL_USING_GPIO24
+                        bool "GPIO_8"
+                    config I2C1_SCL_USING_GPIO26
+                        bool "GPIO_26"
+                    config I2C1_SCL_USING_GPIO28
+                        bool "GPIO_28"
+                    config I2C1_SCL_USING_GPIO30
+                        bool "GPIO_30"
+                    config I2C1_SCL_USING_GPIO32
+                        bool "GPIO_32"
+                    config I2C1_SCL_USING_GPIO34
+                        bool "GPIO_34"
+                    config I2C1_SDA_USING_GPIO36
+                        depends on BSP_USING_BL808
+                        bool "GPIO_36"
+                    config I2C1_SDA_USING_GPIO38
+                        depends on BSP_USING_BL808
+                        bool "GPIO_38"
+                    config I2C1_SDA_USING_GPIO40
+                        depends on BSP_USING_BL808
+                        bool "GPIO_40"
+                    config I2C1_SDA_USING_GPIO42
+                        depends on BSP_USING_BL808
+                        bool "GPIO_42"
+                    config I2C1_SDA_USING_GPIO44
+                        depends on BSP_USING_BL808
+                        bool "GPIO_44"
+                endchoice
+
+                choice
+                    prompt "I2C1 SDA"
+                    default I2C1_SDA_USING_GPIO1
+
+                    config I2C1_SDA_USING_GPIO1
+                        bool "GPIO_1"
+                    config I2C1_SDA_USING_GPIO3
+                        bool "GPIO_3"
+                    config I2C1_SDA_USING_GPIO5
+                        bool "GPIO_5"
+                    config I2C1_SDA_USING_GPIO7
+                        bool "GPIO_7"
+                    config I2C1_SDA_USING_GPIO9
+                        bool "GPIO_9"
+                    config I2C1_SDA_USING_GPIO11
+                        bool "GPIO_11"
+                    config I2C1_SDA_USING_GPIO13
+                        bool "GPIO_13"
+                    config I2C1_SDA_USING_GPIO15
+                        bool "GPIO_15"
+                    config I2C1_SDA_USING_GPIO17
+                        bool "GPIO_17"
+                    config I2C1_SDA_USING_GPIO19
+                        bool "GPIO_19"
+                    config I2C1_SDA_USING_GPIO21
+                        bool "GPIO_21"
+                    config I2C1_SDA_USING_GPIO23
+                        bool "GPIO_23"                        
+                    config I2C1_SDA_USING_GPIO25
+                        bool "GPIO_25"
+                    config I2C1_SDA_USING_GPIO27
+                        bool "GPIO_27"
+                    config I2C1_SDA_USING_GPIO29
+                        bool "GPIO_29"
+                    config I2C1_SDA_USING_GPIO31
+                        bool "GPIO_31"
+                    config I2C1_SDA_USING_GPIO33
+                        bool "GPIO_33"
+                    config I2C1_SDA_USING_GPIO35
+                        depends on BSP_USING_BL808
+                        bool "GPIO_35"
+                    config I2C1_SDA_USING_GPIO37
+                        depends on BSP_USING_BL808
+                        bool "GPIO_37"
+                    config I2C1_SDA_USING_GPIO39
+                        depends on BSP_USING_BL808
+                        bool "GPIO_39"
+                    config I2C1_SDA_USING_GPIO41
+                        depends on BSP_USING_BL808
+                        bool "GPIO_41"
+                    config I2C1_SDA_USING_GPIO43
+                        depends on BSP_USING_BL808
+                        bool "GPIO_43"
+                    config I2C1_SDA_USING_GPIO45
+                        depends on BSP_USING_BL808
+                        bool "GPIO_45"
+                endchoice
+
+                config I2C1_FREQUENCY
+                    int "I2C1 Frequency"
+                    default 400000
+            endif
         endif
-    endmenu
 
     menuconfig BSP_USING_SPI
         bool "Enable SPI"
@@ -1049,6 +1271,7 @@ menu "General Drivers Configuration"
                         range 0 4095
                 endif
         endif
+        
     config BSP_USING_ON_CHIP_FLASH
         bool "Enable On-Chip FLASH"
         default n

bsp/bouffalo_lab/libraries/rt_drivers/SConscript

@@ -10,7 +10,7 @@ if GetDepend('BSP_USING_GPIO'):
     src += ['drv_gpio.c']
 
 if  GetDepend('BSP_USING_I2C'):
-    src += ['drv_soft_i2c.c']
+    src += ['drv_i2c.c']
 
 if  GetDepend('BSP_USING_ADC'):
     src += ['drv_adc.c']

bsp/bouffalo_lab/libraries/rt_drivers/drv_i2c.c

+/*
+ * Copyright (c) 2006-2023, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2023/05/10     flyingcys    first version
+*/
+
+#include <rthw.h>
+#include <rtdevice.h>
+
+#ifdef BSP_USING_I2C
+#include "drv_i2c.h"
+
+#define DBG_TAG "DRV.I2C"
+#define DBG_LVL DBG_WARNING
+#include <rtdbg.h>
+
+struct bl_i2c_bus
+{
+    struct rt_i2c_bus_device parent;
+    struct bflb_device_s *i2c;
+    struct rt_mutex lock;
+};
+
+static rt_ssize_t _i2c_master_xfer(struct rt_i2c_bus_device *bus, struct rt_i2c_msg *msgs, rt_uint32_t num)
+{
+    struct bl_i2c_bus *_i2c_bus = (struct bl_i2c_bus *)bus;
+    struct rt_i2c_msg *msg;
+    struct bflb_i2c_msg_s *bflb_i2c_msg;
+    int i;
+    int ret;
+
+    bflb_i2c_msg = rt_malloc(sizeof(struct bflb_i2c_msg_s) * num);
+    if (!bflb_i2c_msg)
+    {
+        LOG_E("i2c xfer malloc(%d) failure\n", sizeof(struct bflb_i2c_msg_s) * num);
+        return -RT_ENOMEM;
+    }
+
+    rt_memset(bflb_i2c_msg, 0, sizeof(struct bflb_i2c_msg_s) * num);
+
+    for (i = 0; i < num; i++)
+    {
+        msg = &msgs[i];
+        if (msg->flags & RT_I2C_RD)
+        {
+            bflb_i2c_msg[i].flags = I2C_M_READ;
+        }
+        else
+        {
+            bflb_i2c_msg[i].flags = 0;
+        }
+
+        if (_i2c_bus->parent.flags & RT_I2C_DEV_CTRL_10BIT)
+        {
+            bflb_i2c_msg[i].flags |= I2C_M_TEN;
+        }
+
+        bflb_i2c_msg[i].addr = msg->addr;
+        bflb_i2c_msg[i].length = msg->len;
+        bflb_i2c_msg[i].buffer = msg->buf;
+    }
+
+    rt_mutex_take(&_i2c_bus->lock, RT_WAITING_FOREVER);
+    ret = bflb_i2c_transfer(_i2c_bus->i2c, bflb_i2c_msg, num);
+    rt_mutex_release(&_i2c_bus->lock);
+
+    rt_free(bflb_i2c_msg);
+    bflb_i2c_msg = RT_NULL;
+
+    if (ret < 0)
+    {
+        i = 0;
+        LOG_E("i2c xfer failure %d\n", ret);
+    }
+
+    return i;
+}
+
+static const struct rt_i2c_bus_device_ops _i2c_ops =
+{
+    _i2c_master_xfer,
+    RT_NULL,
+    RT_NULL
+};
+
+int rt_hw_i2c_init(void)
+{
+    struct bflb_device_s *gpio;
+    gpio = bflb_device_get_by_name("gpio");
+
+#ifdef BSP_USING_I2C0
+    static struct bl_i2c_bus i2c_bus0;
+
+   /* I2C0_SCL */
+    bflb_gpio_init(gpio, I2C0_GPIO_SCL, GPIO_FUNC_I2C0 | GPIO_ALTERNATE | GPIO_PULLUP | GPIO_SMT_EN | GPIO_DRV_1);
+    /* I2C0_SDA */
+    bflb_gpio_init(gpio, I2C0_GPIO_SDA, GPIO_FUNC_I2C0 | GPIO_ALTERNATE | GPIO_PULLUP | GPIO_SMT_EN | GPIO_DRV_1);
+
+    /* init i2c bus device */
+    rt_mutex_init(&i2c_bus0.lock, "i2c0_mutex", RT_IPC_FLAG_PRIO);
+
+    i2c_bus0.parent.ops = &_i2c_ops;
+    i2c_bus0.i2c = bflb_device_get_by_name("i2c0");
+    bflb_i2c_init(i2c_bus0.i2c, I2C0_FREQUENCY);
+
+    if (rt_i2c_bus_device_register(&i2c_bus0.parent, "i2c0") != RT_EOK)
+        LOG_E("i2c bus register:%s failure\n", "i2c0");
+#endif
+
+#ifdef BSP_USING_I2C1
+    static struct bl_i2c_bus i2c_bus1;
+
+    /* I2C1_SCL */
+    bflb_gpio_init(gpio, I2C1_GPIO_SCL, GPIO_FUNC_I2C1 | GPIO_ALTERNATE | GPIO_PULLUP | GPIO_SMT_EN | GPIO_DRV_1);
+    /* I2C1_SDA */
+    bflb_gpio_init(gpio, I2C1_GPIO_SDA, GPIO_FUNC_I2C1 | GPIO_ALTERNATE | GPIO_PULLUP | GPIO_SMT_EN | GPIO_DRV_1);
+
+    /* init i2c bus device */
+    rt_mutex_init(&i2c_bus1.lock, "i2c1_mutex", RT_IPC_FLAG_PRIO);
+
+    i2c_bus1.parent.ops = &_i2c_ops;
+    i2c_bus1.i2c = bflb_device_get_by_name("i2c1");
+    bflb_i2c_init(i2c_bus1.i2c, I2C1_FREQUENCY);
+
+    if (rt_i2c_bus_device_register(&i2c_bus1.parent, "i2c1") != RT_EOK)
+        LOG_E("i2c bus register:%s failure\n", "i2c1");
+#endif
+
+#ifdef BSP_USING_I2C2
+    static struct bl_i2c_bus i2c_bus2;
+
+    /* I2C2_SCL */
+    bflb_gpio_init(gpio, I2C2_GPIO_SCL, GPIO_FUNC_I2C2 | GPIO_ALTERNATE | GPIO_PULLUP | GPIO_SMT_EN | GPIO_DRV_1);
+    /* I2C2_SDA */
+    bflb_gpio_init(gpio, I2C2_GPIO_SDA, GPIO_FUNC_I2C2 | GPIO_ALTERNATE | GPIO_PULLUP | GPIO_SMT_EN | GPIO_DRV_1);
+
+    /* init i2c bus device */
+    rt_mutex_init(&i2c_bus2.lock, "i2c2_mutex", RT_IPC_FLAG_PRIO);
+
+    i2c_bus2.parent.ops = &_i2c_ops;
+    i2c_bus2.i2c = bflb_device_get_by_name("i2c2");
+    bflb_i2c_init(i2c_bus2.i2c, I2C2_FREQUENCY);
+
+    if (rt_i2c_bus_device_register(&i2c_bus2.parent, "i2c2") != RT_EOK)
+        LOG_E("i2c bus register:%s failure\n", "i2c2");
+#endif
+
+#ifdef BSP_USING_I2C3
+    static struct bl_i2c_bus i2c_bus3;
+
+    /* I2C3_SCL */
+    bflb_gpio_init(gpio, I2C3_GPIO_SCL, GPIO_FUNC_I2C3 | GPIO_ALTERNATE | GPIO_PULLUP | GPIO_SMT_EN | GPIO_DRV_1);
+    /* I2C3_SDA */
+    bflb_gpio_init(gpio, I2C3_GPIO_SDA, GPIO_FUNC_I2C3 | GPIO_ALTERNATE | GPIO_PULLUP | GPIO_SMT_EN | GPIO_DRV_1);
+
+    /* init i2c bus device */
+    rt_mutex_init(&i2c_bus3.lock, "i2c3_mutex", RT_IPC_FLAG_PRIO);
+
+    i2c_bus3.parent.ops = &_i2c_ops;
+    i2c_bus3.i2c = bflb_device_get_by_name("i2c3");
+    bflb_i2c_init(i2c_bus3.i2c, I2C3_FREQUENCY);
+
+    if (rt_i2c_bus_device_register(&i2c_bus3.parent, "i2c3") != RT_EOK)
+        LOG_E("i2c bus register:%s failure\n", "i2c3");
+#endif
+
+    return 0;
+}
+INIT_BOARD_EXPORT(rt_hw_i2c_init);
+
+#endif /* BSP_USING_I2C */

bsp/bouffalo_lab/libraries/rt_drivers/drv_i2c.h

+/*
+ * Copyright (c) 2006-2023, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2023/05/10     flyingcys    first version
+*/
+
+#ifndef __DRV_I2C_H__
+#define __DRV_I2C_H__
+
+#include <rtthread.h>
+#include "rtdevice.h"
+#include <rthw.h>
+
+#include "bflb_gpio.h"
+#include "bflb_i2c.h"
+
+// I2C0
+#ifdef I2C0_SCL_USING_GPIO0
+#define I2C0_GPIO_SCL       GPIO_PIN_0
+#elif defined(I2C0_SCL_USING_GPIO2)
+#define I2C0_GPIO_SCL       GPIO_PIN_2
+#elif defined(I2C0_SCL_USING_GPIO4)
+#define I2C0_GPIO_SCL       GPIO_PIN_4
+#elif defined(I2C0_SCL_USING_GPIO6)
+#define I2C0_GPIO_SCL       GPIO_PIN_6
+#elif defined(I2C0_SCL_USING_GPIO8)
+#define I2C0_GPIO_SCL       GPIO_PIN_8
+#elif defined(I2C0_SCL_USING_GPIO10)
+#define I2C0_GPIO_SCL       GPIO_PIN_4
+#elif defined(I2C0_SCL_USING_GPIO12)
+#define I2C0_GPIO_SCL       GPIO_PIN_12
+#elif defined(I2C0_SCL_USING_GPIO14)
+#define I2C0_GPIO_SCL       GPIO_PIN_14
+#elif defined(I2C0_SCL_USING_GPIO16)
+#define I2C0_GPIO_SCL       GPIO_PIN_16
+#elif defined(I2C0_SCL_USING_GPIO18)
+#define I2C0_GPIO_SCL       GPIO_PIN_18
+#elif defined(I2C0_SCL_USING_GPIO20)
+#define I2C0_GPIO_SCL       GPIO_PIN_20
+#elif defined(I2C0_SCL_USING_GPIO22)
+#define I2C0_GPIO_SCL       GPIO_PIN_22
+#elif defined(I2C0_SCL_USING_GPIO24)
+#define I2C0_GPIO_SCL       GPIO_PIN_24
+#elif defined(I2C0_SCL_USING_GPIO26)
+#define I2C0_GPIO_SCL       GPIO_PIN_26
+#elif defined(I2C0_SCL_USING_GPIO28)
+#define I2C0_GPIO_SCL       GPIO_PIN_28
+#elif defined(I2C0_SCL_USING_GPIO30)
+#define I2C0_GPIO_SCL       GPIO_PIN_30
+#elif defined(I2C0_SCL_USING_GPIO32)
+#define I2C0_GPIO_SCL       GPIO_PIN_32
+#elif defined(I2C0_SCL_USING_GPIO34)
+#define I2C0_GPIO_SCL       GPIO_PIN_34
+#elif defined(I2C0_SCL_USING_GPIO36)
+#define I2C0_GPIO_SCL       GPIO_PIN_36
+#elif defined(I2C0_SCL_USING_GPIO38)
+#define I2C0_GPIO_SCL       GPIO_PIN_38
+#elif defined(I2C0_SCL_USING_GPIO40)
+#define I2C0_GPIO_SCL       GPIO_PIN_40
+#elif defined(I2C0_SCL_USING_GPIO42)
+#define I2C0_GPIO_SCL       GPIO_PIN_42
+#elif defined(I2C0_SCL_USING_GPIO44)
+#define I2C0_GPIO_SCL       GPIO_PIN_44
+#endif
+
+#ifdef I2C0_SDA_USING_GPIO1
+#define I2C0_GPIO_SDA       GPIO_PIN_1
+#elif defined(I2C0_SDA_USING_GPIO3)
+#define I2C0_GPIO_SDA       GPIO_PIN_3
+#elif defined(I2C0_SDA_USING_GPIO5)
+#define I2C0_GPIO_SDA       GPIO_PIN_5
+#elif defined(I2C0_SDA_USING_GPIO7)
+#define I2C0_GPIO_SDA       GPIO_PIN_7
+#elif defined(I2C0_SDA_USING_GPIO9)
+#define I2C0_GPIO_SDA       GPIO_PIN_9
+#elif defined(I2C0_SDA_USING_GPIO11)
+#define I2C0_GPIO_SDA       GPIO_PIN_11
+#elif defined(I2C0_SDA_USING_GPIO13)
+#define I2C0_GPIO_SDA       GPIO_PIN_13
+#elif defined(I2C0_SDA_USING_GPIO15)
+#define I2C0_GPIO_SDA       GPIO_PIN_15
+#elif defined(I2C0_SDA_USING_GPIO17)
+#define I2C0_GPIO_SDA       GPIO_PIN_17
+#elif defined(I2C0_SDA_USING_GPIO19)
+#define I2C0_GPIO_SDA       GPIO_PIN_19
+#elif defined(I2C0_SDA_USING_GPIO21)
+#define I2C0_GPIO_SDA       GPIO_PIN_21
+#elif defined(I2C0_SDA_USING_GPIO23)
+#define I2C0_GPIO_SDA       GPIO_PIN_23
+#elif defined(I2C0_SDA_USING_GPIO25)
+#define I2C0_GPIO_SDA       GPIO_PIN_25
+#elif defined(I2C0_SDA_USING_GPIO27)
+#define I2C0_GPIO_SDA       GPIO_PIN_27
+#elif defined(I2C0_SDA_USING_GPIO29)
+#define I2C0_GPIO_SDA       GPIO_PIN_29
+#elif defined(I2C0_SDA_USING_GPIO31)
+#define I2C0_GPIO_SDA       GPIO_PIN_31
+#elif defined(I2C0_SDA_USING_GPIO33)
+#define I2C0_GPIO_SDA       GPIO_PIN_33
+#elif defined(I2C0_SDA_USING_GPIO35)
+#define I2C0_GPIO_SDA       GPIO_PIN_35
+#elif defined(I2C0_SDA_USING_GPIO37)
+#define I2C0_GPIO_SDA       GPIO_PIN_37
+#elif defined(I2C0_SDA_USING_GPIO39)
+#define I2C0_GPIO_SDA       GPIO_PIN_39
+#elif defined(I2C0_SDA_USING_GPIO41)
+#define I2C0_GPIO_SDA       GPIO_PIN_41
+#elif defined(I2C0_SDA_USING_GPIO43)
+#define I2C0_GPIO_SDA       GPIO_PIN_43
+#elif defined(I2C0_SDA_USING_GPIO45)
+#define I2C0_GPIO_SDA       GPIO_PIN_45
+#endif
+
+// I2C1
+#ifdef I2C1_SCL_USING_GPIO0
+#define I2C1_GPIO_SCL       GPIO_PIN_0
+#elif defined(I2C1_SCL_USING_GPIO2)
+#define I2C1_GPIO_SCL       GPIO_PIN_2
+#elif defined(I2C1_SCL_USING_GPIO4)
+#define I2C1_GPIO_SCL       GPIO_PIN_4
+#elif defined(I2C1_SCL_USING_GPIO6)
+#define I2C1_GPIO_SCL       GPIO_PIN_6
+#elif defined(I2C1_SCL_USING_GPIO8)
+#define I2C1_GPIO_SCL       GPIO_PIN_8
+#elif defined(I2C1_SCL_USING_GPIO10)
+#define I2C1_GPIO_SCL       GPIO_PIN_4
+#elif defined(I2C1_SCL_USING_GPIO12)
+#define I2C1_GPIO_SCL       GPIO_PIN_12
+#elif defined(I2C1_SCL_USING_GPIO14)
+#define I2C1_GPIO_SCL       GPIO_PIN_14
+#elif defined(I2C1_SCL_USING_GPIO16)
+#define I2C1_GPIO_SCL       GPIO_PIN_16
+#elif defined(I2C1_SCL_USING_GPIO18)
+#define I2C1_GPIO_SCL       GPIO_PIN_18
+#elif defined(I2C1_SCL_USING_GPIO20)
+#define I2C1_GPIO_SCL       GPIO_PIN_20
+#elif defined(I2C1_SCL_USING_GPIO22)
+#define I2C1_GPIO_SCL       GPIO_PIN_22
+#elif defined(I2C1_SCL_USING_GPIO24)
+#define I2C1_GPIO_SCL       GPIO_PIN_24
+#elif defined(I2C1_SCL_USING_GPIO26)
+#define I2C1_GPIO_SCL       GPIO_PIN_26
+#elif defined(I2C1_SCL_USING_GPIO28)
+#define I2C1_GPIO_SCL       GPIO_PIN_28
+#elif defined(I2C1_SCL_USING_GPIO30)
+#define I2C1_GPIO_SCL       GPIO_PIN_30
+#elif defined(I2C1_SCL_USING_GPIO32)
+#define I2C1_GPIO_SCL       GPIO_PIN_32
+#elif defined(I2C1_SCL_USING_GPIO34)
+#define I2C1_GPIO_SCL       GPIO_PIN_34
+#elif defined(I2C1_SCL_USING_GPIO36)
+#define I2C1_GPIO_SCL       GPIO_PIN_36
+#elif defined(I2C1_SCL_USING_GPIO38)
+#define I2C1_GPIO_SCL       GPIO_PIN_38
+#elif defined(I2C1_SCL_USING_GPIO40)
+#define I2C1_GPIO_SCL       GPIO_PIN_40
+#elif defined(I2C1_SCL_USING_GPIO42)
+#define I2C1_GPIO_SCL       GPIO_PIN_42
+#elif defined(I2C1_SCL_USING_GPIO44)
+#define I2C1_GPIO_SCL       GPIO_PIN_44
+#endif
+
+#ifdef I2C1_SDA_USING_GPIO26
+#define I2C1_GPIO_SDA       GPIO_PIN_1
+#elif defined(I2C1_SDA_USING_GPIO3)
+#define I2C1_GPIO_SDA       GPIO_PIN_3
+#elif defined(I2C1_SDA_USING_GPIO5)
+#define I2C1_GPIO_SDA       GPIO_PIN_5
+#elif defined(I2C1_SDA_USING_GPIO7)
+#define I2C1_GPIO_SDA       GPIO_PIN_7
+#elif defined(I2C1_SDA_USING_GPIO9)
+#define I2C1_GPIO_SDA       GPIO_PIN_9
+#elif defined(I2C1_SDA_USING_GPIO11)
+#define I2C1_GPIO_SDA       GPIO_PIN_11
+#elif defined(I2C1_SDA_USING_GPIO13)
+#define I2C1_GPIO_SDA       GPIO_PIN_13
+#elif defined(I2C1_SDA_USING_GPIO15)
+#define I2C1_GPIO_SDA       GPIO_PIN_15
+#elif defined(I2C1_SDA_USING_GPIO17)
+#define I2C1_GPIO_SDA       GPIO_PIN_17
+#elif defined(I2C1_SDA_USING_GPIO19)
+#define I2C1_GPIO_SDA       GPIO_PIN_19
+#elif defined(I2C1_SDA_USING_GPIO21)
+#define I2C1_GPIO_SDA       GPIO_PIN_21
+#elif defined(I2C1_SDA_USING_GPIO23)
+#define I2C1_GPIO_SDA       GPIO_PIN_23
+#elif defined(I2C1_SDA_USING_GPIO25)
+#define I2C1_GPIO_SDA       GPIO_PIN_25
+#elif defined(I2C1_SDA_USING_GPIO27)
+#define I2C1_GPIO_SDA       GPIO_PIN_27
+#elif defined(I2C1_SDA_USING_GPIO29)
+#define I2C1_GPIO_SDA       GPIO_PIN_29
+#elif defined(I2C1_SDA_USING_GPIO31)
+#define I2C1_GPIO_SDA       GPIO_PIN_31
+#elif defined(I2C1_SDA_USING_GPIO33)
+#define I2C1_GPIO_SDA       GPIO_PIN_33
+#elif defined(I2C1_SDA_USING_GPIO35)
+#define I2C1_GPIO_SDA       GPIO_PIN_35
+#elif defined(I2C1_SDA_USING_GPIO37)
+#define I2C1_GPIO_SDA       GPIO_PIN_37
+#elif defined(I2C1_SDA_USING_GPIO39)
+#define I2C1_GPIO_SDA       GPIO_PIN_39
+#elif defined(I2C1_SDA_USING_GPIO41)
+#define I2C1_GPIO_SDA       GPIO_PIN_41
+#elif defined(I2C1_SDA_USING_GPIO43)
+#define I2C1_GPIO_SDA       GPIO_PIN_43
+#elif defined(I2C1_SDA_USING_GPIO45)
+#define I2C1_GPIO_SDA       GPIO_PIN_45
+#endif
+
+// I2C2
+#ifdef I2C2_SCL_USING_GPIO0
+#define I2C2_GPIO_SCL       GPIO_PIN_0
+#elif defined(I2C2_SCL_USING_GPIO2)
+#define I2C2_GPIO_SCL       GPIO_PIN_2
+#elif defined(I2C2_SCL_USING_GPIO4)
+#define I2C2_GPIO_SCL       GPIO_PIN_4
+#elif defined(I2C2_SCL_USING_GPIO6)
+#define I2C2_GPIO_SCL       GPIO_PIN_6
+#elif defined(I2C2_SCL_USING_GPIO8)
+#define I2C2_GPIO_SCL       GPIO_PIN_8
+#elif defined(I2C2_SCL_USING_GPIO10)
+#define I2C2_GPIO_SCL       GPIO_PIN_4
+#elif defined(I2C2_SCL_USING_GPIO12)
+#define I2C2_GPIO_SCL       GPIO_PIN_12
+#elif defined(I2C2_SCL_USING_GPIO14)
+#define I2C2_GPIO_SCL       GPIO_PIN_14
+#elif defined(I2C2_SCL_USING_GPIO16)
+#define I2C2_GPIO_SCL       GPIO_PIN_16
+#elif defined(I2C2_SCL_USING_GPIO18)
+#define I2C2_GPIO_SCL       GPIO_PIN_18
+#elif defined(I2C2_SCL_USING_GPIO20)
+#define I2C2_GPIO_SCL       GPIO_PIN_20
+#elif defined(I2C2_SCL_USING_GPIO22)
+#define I2C2_GPIO_SCL       GPIO_PIN_22
+#elif defined(I2C2_SCL_USING_GPIO24)
+#define I2C2_GPIO_SCL       GPIO_PIN_24
+#elif defined(I2C2_SCL_USING_GPIO26)
+#define I2C2_GPIO_SCL       GPIO_PIN_26
+#elif defined(I2C2_SCL_USING_GPIO28)
+#define I2C2_GPIO_SCL       GPIO_PIN_28
+#elif defined(I2C2_SCL_USING_GPIO30)
+#define I2C2_GPIO_SCL       GPIO_PIN_30
+#elif defined(I2C2_SCL_USING_GPIO32)
+#define I2C2_GPIO_SCL       GPIO_PIN_32
+#elif defined(I2C2_SCL_USING_GPIO34)
+#define I2C2_GPIO_SCL       GPIO_PIN_34
+#elif defined(I2C2_SCL_USING_GPIO36)
+#define I2C2_GPIO_SCL       GPIO_PIN_36
+#elif defined(I2C2_SCL_USING_GPIO38)
+#define I2C2_GPIO_SCL       GPIO_PIN_38
+#elif defined(I2C2_SCL_USING_GPIO40)
+#define I2C2_GPIO_SCL       GPIO_PIN_40
+#elif defined(I2C2_SCL_USING_GPIO42)
+#define I2C2_GPIO_SCL       GPIO_PIN_42
+#elif defined(I2C2_SCL_USING_GPIO44)
+#define I2C2_GPIO_SCL       GPIO_PIN_44
+#endif
+
+#ifdef I2C2_SDA_USING_GPIO26
+#define I2C2_GPIO_SDA       GPIO_PIN_1
+#elif defined(I2C2_SDA_USING_GPIO3)
+#define I2C2_GPIO_SDA       GPIO_PIN_3
+#elif defined(I2C2_SDA_USING_GPIO5)
+#define I2C2_GPIO_SDA       GPIO_PIN_5
+#elif defined(I2C2_SDA_USING_GPIO7)
+#define I2C2_GPIO_SDA       GPIO_PIN_7
+#elif defined(I2C2_SDA_USING_GPIO9)
+#define I2C2_GPIO_SDA       GPIO_PIN_9
+#elif defined(I2C2_SDA_USING_GPIO11)
+#define I2C2_GPIO_SDA       GPIO_PIN_11
+#elif defined(I2C2_SDA_USING_GPIO13)
+#define I2C2_GPIO_SDA       GPIO_PIN_13
+#elif defined(I2C2_SDA_USING_GPIO15)
+#define I2C2_GPIO_SDA       GPIO_PIN_15
+#elif defined(I2C2_SDA_USING_GPIO17)
+#define I2C2_GPIO_SDA       GPIO_PIN_17
+#elif defined(I2C2_SDA_USING_GPIO19)
+#define I2C2_GPIO_SDA       GPIO_PIN_19
+#elif defined(I2C2_SDA_USING_GPIO21)
+#define I2C2_GPIO_SDA       GPIO_PIN_21
+#elif defined(I2C2_SDA_USING_GPIO23)
+#define I2C2_GPIO_SDA       GPIO_PIN_23
+#elif defined(I2C2_SDA_USING_GPIO25)
+#define I2C2_GPIO_SDA       GPIO_PIN_25
+#elif defined(I2C2_SDA_USING_GPIO27)
+#define I2C2_GPIO_SDA       GPIO_PIN_27
+#elif defined(I2C2_SDA_USING_GPIO29)
+#define I2C2_GPIO_SDA       GPIO_PIN_29
+#elif defined(I2C2_SDA_USING_GPIO31)
+#define I2C2_GPIO_SDA       GPIO_PIN_31
+#elif defined(I2C2_SDA_USING_GPIO33)
+#define I2C2_GPIO_SDA       GPIO_PIN_33
+#elif defined(I2C2_SDA_USING_GPIO35)
+#define I2C2_GPIO_SDA       GPIO_PIN_35
+#elif defined(I2C2_SDA_USING_GPIO37)
+#define I2C2_GPIO_SDA       GPIO_PIN_37
+#elif defined(I2C2_SDA_USING_GPIO39)
+#define I2C2_GPIO_SDA       GPIO_PIN_39
+#elif defined(I2C2_SDA_USING_GPIO41)
+#define I2C2_GPIO_SDA       GPIO_PIN_41
+#elif defined(I2C2_SDA_USING_GPIO43)
+#define I2C2_GPIO_SDA       GPIO_PIN_43
+#elif defined(I2C2_SDA_USING_GPIO45)
+#define I2C2_GPIO_SDA       GPIO_PIN_45
+#endif
+
+// I2C3
+#ifdef I2C3_SCL_USING_GPIO0
+#define I2C3_GPIO_SCL       GPIO_PIN_0
+#elif defined(I2C3_SCL_USING_GPIO2)
+#define I2C3_GPIO_SCL       GPIO_PIN_2
+#elif defined(I2C3_SCL_USING_GPIO4)
+#define I2C3_GPIO_SCL       GPIO_PIN_4
+#elif defined(I2C3_SCL_USING_GPIO6)
+#define I2C3_GPIO_SCL       GPIO_PIN_6
+#elif defined(I2C3_SCL_USING_GPIO8)
+#define I2C3_GPIO_SCL       GPIO_PIN_8
+#elif defined(I2C3_SCL_USING_GPIO10)
+#define I2C3_GPIO_SCL       GPIO_PIN_4
+#elif defined(I2C3_SCL_USING_GPIO12)
+#define I2C3_GPIO_SCL       GPIO_PIN_12
+#elif defined(I2C3_SCL_USING_GPIO14)
+#define I2C3_GPIO_SCL       GPIO_PIN_14
+#elif defined(I2C3_SCL_USING_GPIO16)
+#define I2C3_GPIO_SCL       GPIO_PIN_16
+#elif defined(I2C3_SCL_USING_GPIO18)
+#define I2C3_GPIO_SCL       GPIO_PIN_18
+#elif defined(I2C3_SCL_USING_GPIO20)
+#define I2C3_GPIO_SCL       GPIO_PIN_20
+#elif defined(I2C3_SCL_USING_GPIO22)
+#define I2C3_GPIO_SCL       GPIO_PIN_22
+#elif defined(I2C3_SCL_USING_GPIO24)
+#define I2C3_GPIO_SCL       GPIO_PIN_24
+#elif defined(I2C3_SCL_USING_GPIO26)
+#define I2C3_GPIO_SCL       GPIO_PIN_26
+#elif defined(I2C3_SCL_USING_GPIO28)
+#define I2C3_GPIO_SCL       GPIO_PIN_28
+#elif defined(I2C3_SCL_USING_GPIO30)
+#define I2C3_GPIO_SCL       GPIO_PIN_30
+#elif defined(I2C3_SCL_USING_GPIO32)
+#define I2C3_GPIO_SCL       GPIO_PIN_32
+#elif defined(I2C3_SCL_USING_GPIO34)
+#define I2C3_GPIO_SCL       GPIO_PIN_34
+#elif defined(I2C3_SCL_USING_GPIO36)
+#define I2C3_GPIO_SCL       GPIO_PIN_36
+#elif defined(I2C3_SCL_USING_GPIO38)
+#define I2C3_GPIO_SCL       GPIO_PIN_38
+#elif defined(I2C3_SCL_USING_GPIO40)
+#define I2C3_GPIO_SCL       GPIO_PIN_40
+#elif defined(I2C3_SCL_USING_GPIO42)
+#define I2C3_GPIO_SCL       GPIO_PIN_42
+#elif defined(I2C3_SCL_USING_GPIO44)
+#define I2C3_GPIO_SCL       GPIO_PIN_44
+#endif
+
+#ifdef I2C3_SDA_USING_GPIO26
+#define I2C3_GPIO_SDA       GPIO_PIN_1
+#elif defined(I2C3_SDA_USING_GPIO3)
+#define I2C3_GPIO_SDA       GPIO_PIN_3
+#elif defined(I2C3_SDA_USING_GPIO5)
+#define I2C3_GPIO_SDA       GPIO_PIN_5
+#elif defined(I2C3_SDA_USING_GPIO7)
+#define I2C3_GPIO_SDA       GPIO_PIN_7
+#elif defined(I2C3_SDA_USING_GPIO9)
+#define I2C3_GPIO_SDA       GPIO_PIN_9
+#elif defined(I2C3_SDA_USING_GPIO11)
+#define I2C3_GPIO_SDA       GPIO_PIN_11
+#elif defined(I2C3_SDA_USING_GPIO13)
+#define I2C3_GPIO_SDA       GPIO_PIN_13
+#elif defined(I2C3_SDA_USING_GPIO15)
+#define I2C3_GPIO_SDA       GPIO_PIN_15
+#elif defined(I2C3_SDA_USING_GPIO17)
+#define I2C3_GPIO_SDA       GPIO_PIN_17
+#elif defined(I2C3_SDA_USING_GPIO19)
+#define I2C3_GPIO_SDA       GPIO_PIN_19
+#elif defined(I2C3_SDA_USING_GPIO21)
+#define I2C3_GPIO_SDA       GPIO_PIN_21
+#elif defined(I2C3_SDA_USING_GPIO23)
+#define I2C3_GPIO_SDA       GPIO_PIN_23
+#elif defined(I2C3_SDA_USING_GPIO25)
+#define I2C3_GPIO_SDA       GPIO_PIN_25
+#elif defined(I2C3_SDA_USING_GPIO27)
+#define I2C3_GPIO_SDA       GPIO_PIN_27
+#elif defined(I2C3_SDA_USING_GPIO29)
+#define I2C3_GPIO_SDA       GPIO_PIN_29
+#elif defined(I2C3_SDA_USING_GPIO31)
+#define I2C3_GPIO_SDA       GPIO_PIN_31
+#elif defined(I2C3_SDA_USING_GPIO33)
+#define I2C3_GPIO_SDA       GPIO_PIN_33
+#elif defined(I2C3_SDA_USING_GPIO35)
+#define I2C3_GPIO_SDA       GPIO_PIN_35
+#elif defined(I2C3_SDA_USING_GPIO37)
+#define I2C3_GPIO_SDA       GPIO_PIN_37
+#elif defined(I2C3_SDA_USING_GPIO39)
+#define I2C3_GPIO_SDA       GPIO_PIN_39
+#elif defined(I2C3_SDA_USING_GPIO41)
+#define I2C3_GPIO_SDA       GPIO_PIN_41
+#elif defined(I2C3_SDA_USING_GPIO43)
+#define I2C3_GPIO_SDA       GPIO_PIN_43
+#elif defined(I2C3_SDA_USING_GPIO45)
+#define I2C3_GPIO_SDA       GPIO_PIN_45
+#endif
+
+int rt_hw_i2c_init(void);
+
+#endif /* __DRV_I2C_H__ */