From ef5f2669dcff068a0b7ed9cdb94acecc060440f6 Mon Sep 17 00:00:00 2001
From: Damien George <damien.p.george@gmail.com>
Date: Sat, 30 Jan 2016 00:06:04 +0000
Subject: [PATCH] tests: For pyboard, add test for I2C error handling and
 recovery.

---
 tests/pyb/i2c_error.py     | 50 ++++++++++++++++++++++++++++++++++++++
 tests/pyb/i2c_error.py.exp |  4 +++
 2 files changed, 54 insertions(+)
 create mode 100644 tests/pyb/i2c_error.py
 create mode 100644 tests/pyb/i2c_error.py.exp

diff --git a/tests/pyb/i2c_error.py b/tests/pyb/i2c_error.py
new file mode 100644
index 000000000..d6c0debe2
--- /dev/null
+++ b/tests/pyb/i2c_error.py
@@ -0,0 +1,50 @@
+# test I2C errors, with polling (disabled irqs) and DMA
+
+import pyb
+from pyb import I2C
+
+# init accelerometer
+pyb.Accel()
+
+# get I2C bus
+i2c = I2C(1, I2C.MASTER) 
+
+# test polling mem_read
+pyb.disable_irq()
+i2c.mem_read(1, 76, 0x0a) # should succeed
+pyb.enable_irq()
+try:
+    pyb.disable_irq()
+    i2c.mem_read(1, 77, 0x0a) # should fail
+except OSError as e:
+    pyb.enable_irq()
+    print(repr(e))
+i2c.mem_read(1, 76, 0x0a) # should succeed
+
+# test polling mem_write
+pyb.disable_irq()
+i2c.mem_write(1, 76, 0x0a) # should succeed
+pyb.enable_irq()
+try:
+    pyb.disable_irq()
+    i2c.mem_write(1, 77, 0x0a) # should fail
+except OSError as e:
+    pyb.enable_irq()
+    print(repr(e))
+i2c.mem_write(1, 76, 0x0a) # should succeed
+
+# test DMA mem_read
+i2c.mem_read(1, 76, 0x0a) # should succeed
+try:
+    i2c.mem_read(1, 77, 0x0a) # should fail
+except OSError as e:
+    print(repr(e))
+i2c.mem_read(1, 76, 0x0a) # should succeed
+
+# test DMA mem_write
+i2c.mem_write(1, 76, 0x0a) # should succeed
+try:
+    i2c.mem_write(1, 77, 0x0a) # should fail
+except OSError as e:
+    print(repr(e))
+i2c.mem_write(1, 76, 0x0a) # should succeed
diff --git a/tests/pyb/i2c_error.py.exp b/tests/pyb/i2c_error.py.exp
new file mode 100644
index 000000000..bd403f7f4
--- /dev/null
+++ b/tests/pyb/i2c_error.py.exp
@@ -0,0 +1,4 @@
+OSError(5,)
+OSError(5,)
+OSError(5,)
+OSError(5,)
-- 
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