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x86, galileo: Refactor I2C and GPIO initialization

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This patch revises the I2C and GPIO initialization code to always be
run during platform boot rather than within each process that requires
it.

This patch also revises the gpio-output example to use a pin that is
set as an output by the default pinmux configuration.  Previously, it
used a pin that was set as an output by the pinmux configuration that
is in effect when the OS does not change the pinmux configuration.
This commit is contained in:
Michael LeMay 2016-01-05 23:05:09 -08:00
parent 3e64447631
commit 58874ea25d
10 changed files with 54 additions and 70 deletions
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15
examples/galileo/gpio-interrupt.c
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@ -1,5 +1,5 @@
/*
* Copyright (C) 2015, Intel Corporation. All rights reserved.
* Copyright (C) 2015-2016, Intel Corporation. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
@ -34,14 +34,11 @@
#include "sys/ctimer.h"
#include "gpio.h"
#include "i2c.h"
#include "galileo-pinmux.h"
#define PIN_OUTPUT 5
#define PIN_INTR 6
static struct ctimer timer;
static struct quarkX1000_i2c_config i2c_config;
PROCESS(gpio_interrupt_process, "GPIO Interrupt Process");
AUTOSTART_PROCESSES(&gpio_interrupt_process);
@ -66,16 +63,6 @@ PROCESS_THREAD(gpio_interrupt_process, ev, data)
{
PROCESS_BEGIN();
i2c_config.speed = QUARKX1000_I2C_SPEED_STANDARD;
i2c_config.addressing_mode = QUARKX1000_I2C_ADDR_MODE_7BIT;
quarkX1000_i2c_init();
quarkX1000_i2c_configure(&i2c_config);
/* use default pinmux configuration */
galileo_pinmux_initialize();
quarkX1000_gpio_init();
quarkX1000_gpio_config(PIN_OUTPUT, QUARKX1000_GPIO_OUT);
quarkX1000_gpio_config(PIN_INTR, QUARKX1000_GPIO_INT | QUARKX1000_GPIO_ACTIVE_HIGH | QUARKX1000_GPIO_EDGE);