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kinetis:k20 Pin mux configure all I2C signals as Open Drain

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The output structure of the GPIO for I2C needs to be open
   drain.  When left at the default, one can observe on a scope
   the slave contending with the push-pull during the ACK
This commit is contained in:
David Sidrane 2017-05-05 15:02:55 -10:00
parent 1cd3b3f590
commit 979e671cf0
1 changed files with 11 additions and 10 deletions
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21
arch/arm/src/kinetis/chip/kinetis_k20pinmux.h
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@ -1,8 +1,9 @@
/********************************************************************************************
* arch/arm/src/kinetis/chip/kinetis_k20pinmux.h
*
* Copyright (C) 2015-2016 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
* Copyright (C) 2015-2017 Gregory Nutt. All rights reserved.
* Authors: Gregory Nutt <gnutt@nuttx.org>
* David Sidrane <david_s5@nscdg.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
@ -159,14 +160,14 @@
# define PIN_FTM2_QD_PHA (PIN_ALT6 | PIN_PORTB | PIN18)
# define PIN_FTM2_QD_PHB (PIN_ALT6 | PIN_PORTB | PIN19)
# define PIN_I2C0_SCL_1 (PIN_ALT2 | PIN_PORTB | PIN0)
# define PIN_I2C0_SCL_2 (PIN_ALT2 | PIN_PORTB | PIN2)
# define PIN_I2C0_SDA_1 (PIN_ALT2 | PIN_PORTB | PIN1)
# define PIN_I2C0_SDA_2 (PIN_ALT2 | PIN_PORTB | PIN3)
# define PIN_I2C1_SCL_1 (PIN_ALT2 | PIN_PORTC | PIN10)
# define PIN_I2C1_SCL_2 (PIN_ALT6 | PIN_PORTE | PIN1)
# define PIN_I2C1_SDA_1 (PIN_ALT2 | PIN_PORTC | PIN11)
# define PIN_I2C1_SDA_2 (PIN_ALT6 | PIN_PORTE | PIN0)
# define PIN_I2C0_SCL_1 (PIN_ALT2_OPENDRAIN | PIN_PORTB | PIN0)
# define PIN_I2C0_SCL_2 (PIN_ALT2_OPENDRAIN | PIN_PORTB | PIN2)
# define PIN_I2C0_SDA_1 (PIN_ALT2_OPENDRAIN | PIN_PORTB | PIN1)
# define PIN_I2C0_SDA_2 (PIN_ALT2_OPENDRAIN | PIN_PORTB | PIN3)
# define PIN_I2C1_SCL_1 (PIN_ALT2_OPENDRAIN | PIN_PORTC | PIN10)
# define PIN_I2C1_SCL_2 (PIN_ALT6_OPENDRAIN | PIN_PORTE | PIN1)
# define PIN_I2C1_SDA_1 (PIN_ALT2_OPENDRAIN | PIN_PORTC | PIN11)
# define PIN_I2C1_SDA_2 (PIN_ALT6_OPENDRAIN | PIN_PORTE | PIN0)
# define PIN_I2S0_MCLK_1 (PIN_ALT4 | PIN_PORTC | PIN8)
# define PIN_I2S0_MCLK_2 (PIN_ALT6 | PIN_PORTC | PIN6)