From a6e2ac208e29051828f531eb9a8514fa6e236b1c Mon Sep 17 00:00:00 2001
From: apiesse <mirco.pattera@gmail.com>
Date: Thu, 5 Mar 2020 17:30:21 +0100
Subject: [PATCH] Hardware I2C0/I2C1 for sccb communication

---
 Kconfig       | 13 ++++++++++---
 driver/sccb.c | 11 +++++++++++
 2 files changed, 21 insertions(+), 3 deletions(-)

diff --git a/Kconfig b/Kconfig
index 8d3af00..06a90b5 100755
--- a/Kconfig
+++ b/Kconfig
@@ -21,13 +21,20 @@ config OV3660_SUPPORT
         Enable this option if you want to use the OV3360.
         Disable this option to safe memory.
     
-config SCCB_HARDWARE_I2C
-    bool "Use hardware I2C1 for SCCB"
-    default y
+choice SCCB_HARDWARE_I2C
+    bool "Use hardware I2C0/I2C1 for SCCB"
+    default SCCB_HARDWARE_I2C1
     help
         Enable this option if you want to use hardware I2C to control the camera.
         Disable this option to use software I2C.
 
+    config SCCB_HARDWARE_I2C0
+        bool "I2C0"
+    config SCCB_HARDWARE_I2C1
+        bool "I2C1"
+
+endchoice
+
 choice CAMERA_TASK_PINNED_TO_CORE
     bool "Camera task pinned to core"
     default CAMERA_CORE0
diff --git a/driver/sccb.c b/driver/sccb.c
index 48e53fc..bbff837 100755
--- a/driver/sccb.c
+++ b/driver/sccb.c
@@ -19,6 +19,13 @@
 static const char* TAG = "sccb";
 #endif
 
+#ifdef CONFIG_SCCB_HARDWARE_I2C0
+ #define CONFIG_SCCB_HARDWARE_I2C
+#endif
+#ifdef CONFIG_SCCB_HARDWARE_I2C1
+ #define CONFIG_SCCB_HARDWARE_I2C
+#endif
+
 #define LITTLETOBIG(x)          ((x<<8)|(x>>8))
 
 #ifdef CONFIG_SCCB_HARDWARE_I2C
@@ -31,7 +38,11 @@ static const char* TAG = "sccb";
 #define ACK_CHECK_DIS           0x0              /*!< I2C master will not check ack from slave */
 #define ACK_VAL                 0x0              /*!< I2C ack value */
 #define NACK_VAL                0x1              /*!< I2C nack value */
+#if CONFIG_SCCB_HARDWARE_I2C1
 const int SCCB_I2C_PORT         = 1;
+#else
+const int SCCB_I2C_PORT         = 0;
+#endif
 static uint8_t ESP_SLAVE_ADDR   = 0x3c;
 #else
 #include "twi.h"