From 7005bd848bd5701604f355fff9f720ea0ad9f621 Mon Sep 17 00:00:00 2001
From: "ucart@co3050-12" <dawehr@iastate.edu>
Date: Sat, 22 Apr 2017 14:48:49 -0500
Subject: [PATCH] wip: add checks to new i2c
---
quad/xsdk_workspace/real_quad/src/hw_impl_zybo_i2c.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/quad/xsdk_workspace/real_quad/src/hw_impl_zybo_i2c.c b/quad/xsdk_workspace/real_quad/src/hw_impl_zybo_i2c.c
index 85bf4f0e0..751ae4ccf 100644
--- a/quad/xsdk_workspace/real_quad/src/hw_impl_zybo_i2c.c
+++ b/quad/xsdk_workspace/real_quad/src/hw_impl_zybo_i2c.c
@@ -43,7 +43,11 @@ int XIicPs_MasterRecvPolled_ours(XIicPs *InstancePtr, u8 *MsgPtr,
int XIicPs_SetupMaster(XIicPs *InstancePtr, int Role);
int zybo_i2c_reset(struct I2CDriver *self) {
+ // ensure all required memory is allocated
struct ZyboI2CState *state = self->state;
+ if (state == NULL) return -1;
+ if (state->inst == NULL) return -1;
+ if (state->busId > 1) return -1;
int i2cID = state->busId;
XIicPs *inst = state->inst;
--
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