From 76a4cac87307b2acba3c4bab2084db54988832cf Mon Sep 17 00:00:00 2001
From: Harry Ho <hh@m-labs.hk>
Date: Mon, 10 Aug 2020 11:49:21 +0800
Subject: [PATCH] i2c: disable its usage on Cora Z7-10

---
 experiments/src/main.rs  | 57 +++++++++++++++++++++-------------------
 libboard_zynq/src/lib.rs |  1 +
 2 files changed, 31 insertions(+), 27 deletions(-)

diff --git a/experiments/src/main.rs b/experiments/src/main.rs
index 91bea19..17b12ff 100644
--- a/experiments/src/main.rs
+++ b/experiments/src/main.rs
@@ -205,34 +205,37 @@ pub fn main_core0() {
     }
     
     // Test I2C
-    let mut i2c = zynq::i2c::I2C::i2c();
-    i2c.init();
-    println!("I2C bit-banging enabled");
-    let mut eeprom = zynq::i2c::eeprom::EEPROM::new(&mut i2c, 16);
-    // Write to 0x00 and 0x08
-    let eeprom_buffer: [u8; 22] = [
-        0x66, 0x77, 0x88, 0x99, 0xaa, 0xbb, 
-        0x77, 0x88, 0x99, 0xaa, 0xbb, 0xcc, 0xdd, 0xee, 
-        0xef, 0xcd, 0xab, 0x89, 0x67, 0x45, 0x23, 0x01,
-    ];
-    eeprom.write(0x00, &eeprom_buffer[0..6]);
-    eeprom.write(0x08, &eeprom_buffer[6..22]);
-    println!("Data written to EEPROM");
-    let mut eeprom_buffer = [0u8; 24];
-    // Read from 0x00
-    eeprom.read(0x00, &mut eeprom_buffer);
-    print!("Data read from EEPROM @ 0x00: (hex) ");
-    for i in 0..6 {
-        print!("{:02x} ", eeprom_buffer[i]);
+    #[cfg(feature = "target_zc706")]
+    {
+        let mut i2c = zynq::i2c::I2C::i2c();
+        i2c.init();
+        println!("I2C bit-banging enabled");
+        let mut eeprom = zynq::i2c::eeprom::EEPROM::new(&mut i2c, 16);
+        // Write to 0x00 and 0x08
+        let eeprom_buffer: [u8; 22] = [
+            0x66, 0x77, 0x88, 0x99, 0xaa, 0xbb, 
+            0x77, 0x88, 0x99, 0xaa, 0xbb, 0xcc, 0xdd, 0xee, 
+            0xef, 0xcd, 0xab, 0x89, 0x67, 0x45, 0x23, 0x01,
+        ];
+        eeprom.write(0x00, &eeprom_buffer[0..6]);
+        eeprom.write(0x08, &eeprom_buffer[6..22]);
+        println!("Data written to EEPROM");
+        let mut eeprom_buffer = [0u8; 24];
+        // Read from 0x00
+        eeprom.read(0x00, &mut eeprom_buffer);
+        print!("Data read from EEPROM @ 0x00: (hex) ");
+        for i in 0..6 {
+            print!("{:02x} ", eeprom_buffer[i]);
+        }
+        println!("");
+        // Read from 0x08
+        eeprom.read(0x08, &mut eeprom_buffer);
+        print!("Data read from EEPROM @ 0x08: (hex) ");
+        for i in 0..16 {
+            print!("{:02x} ", eeprom_buffer[i]);
+        }
+        println!("");
     }
-    println!("");
-    // Read from 0x08
-    eeprom.read(0x08, &mut eeprom_buffer);
-    print!("Data read from EEPROM @ 0x08: (hex) ");
-    for i in 0..16 {
-        print!("{:02x} ", eeprom_buffer[i]);
-    }
-    println!("");
 
     let eth = zynq::eth::Eth::default(HWADDR.clone());
     println!("Eth on");
diff --git a/libboard_zynq/src/lib.rs b/libboard_zynq/src/lib.rs
index 8c6daf4..12343b2 100644
--- a/libboard_zynq/src/lib.rs
+++ b/libboard_zynq/src/lib.rs
@@ -20,6 +20,7 @@ pub mod flash;
 pub mod time;
 pub mod timer;
 pub mod sdio;
+#[cfg(feature = "target_zc706")]
 pub mod i2c;
 pub mod logger;
 pub mod ps7_init;