From 1de64c9bd7093b30e04da9e0471c9f4f41318f95 Mon Sep 17 00:00:00 2001 From: Leon Hiemstra <hiemstra@astron.nl> Date: Fri, 18 Mar 2016 12:20:21 +0000 Subject: [PATCH] For Arria10* it solves the not-working I2C issue: bidirectional pin drive out '1' instead of 'Z'. It also removes the Warning (12620): Input port OE of I/O output buffer is not connected, but the atom is driving a bi-direct... --- libraries/io/i2c/src/vhdl/i2c_smbus.vhd | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/libraries/io/i2c/src/vhdl/i2c_smbus.vhd b/libraries/io/i2c/src/vhdl/i2c_smbus.vhd index 3ebcbc1f7b..a99207cf98 100644 --- a/libraries/io/i2c/src/vhdl/i2c_smbus.vhd +++ b/libraries/io/i2c/src/vhdl/i2c_smbus.vhd @@ -137,6 +137,13 @@ ARCHITECTURE rtl OF i2c_smbus IS SIGNAL timeout : STD_LOGIC; SIGNAL nxt_timeout : STD_LOGIC; + -- Attributes for Quartus. Fixes the issues: + -- - For Arria10* it solves the I2C issue: bidirectional pin drive out '1' instead of 'Z' + -- - Removes the Warning (12620): Input port OE of I/O output buffer is not connected, but the atom is driving a bi-direct... + attribute keep: boolean; + attribute keep of scl_o: signal is true; + attribute keep of sda_o: signal is true; + BEGIN -- CONSTANT Signals dependent on GENERIC Signal gs_sim -- GitLab