/
intel_edison_fab_c.c
1460 lines (1298 loc) · 46.9 KB
/
intel_edison_fab_c.c
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/*
* Author: Thomas Ingleby <thomas.c.ingleby@intel.com>
* Copyright (c) 2014 Intel Corporation.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/mman.h>
#include "common.h"
#include "x86/intel_edison_fab_c.h"
#define PLATFORM_NAME "Intel Edison"
#define SYSFS_CLASS_GPIO "/sys/class/gpio"
#define SYSFS_PINMODE_PATH "/sys/kernel/debug/gpio_debug/gpio"
#define MAX_SIZE 64
#define MAX_MODE_SIZE 8
// This is an absolute path to a resource file found within sysfs.
// Might not always be correct. First thing to check if mmap stops
// working. Check the device for 0x1199 and Intel Vendor (0x8086)
#define MMAP_PATH "/sys/devices/pci0000:00/0000:00:0c.0/resource0"
#define UART_DEV_PATH "/dev/ttyMFD1"
typedef struct {
int sysfs;
int mode;
} mraa_intel_edision_pindef_t;
typedef struct {
mraa_intel_edision_pindef_t gpio;
mraa_intel_edision_pindef_t pwm;
mraa_intel_edision_pindef_t i2c;
mraa_intel_edision_pindef_t spi;
mraa_intel_edision_pindef_t uart;
} mraa_intel_edison_pinmodes_t;
static mraa_gpio_context tristate;
static mraa_intel_edison_pinmodes_t pinmodes[MRAA_INTEL_EDISON_PINCOUNT];
static unsigned int outputen[] = {248,249,250,251,252,253,254,255,256,257,258,259,260,261,232,233,234,235,236,237};
static mraa_gpio_context agpioOutputen[sizeof(outputen)/sizeof(outputen[0])];
static unsigned int pullup_map[] = {216,217,218,219,220,221,222,223,224,225,226,227,228,229,208,209,210,211,212,213};
static int miniboard = 0;
//MMAP
static uint8_t *mmap_reg = NULL;
static int mmap_fd = 0;
static int mmap_size;
static unsigned int mmap_count = 0;
static mraa_result_t
mraa_intel_edison_pinmode_change(int sysfs, int mode)
{
if (mode < 0 ) {
return MRAA_SUCCESS;
}
char buffer[MAX_SIZE];
snprintf(buffer, MAX_SIZE, SYSFS_PINMODE_PATH "%i/current_pinmux",sysfs);
int modef = open(buffer, O_WRONLY);
if (modef == -1) {
syslog(LOG_ERR, "edison: Failed to open SoC pinmode for opening");
return MRAA_ERROR_INVALID_RESOURCE;
}
mraa_result_t ret = MRAA_SUCCESS;
char mode_buf[MAX_MODE_SIZE];
int length = sprintf(mode_buf, "mode%u",mode);
if (write(modef, mode_buf, length*sizeof(char)) == -1) {
ret = MRAA_ERROR_INVALID_RESOURCE;
}
close(modef);
return ret;
}
mraa_result_t
mraa_intel_edison_gpio_dir_pre(mraa_gpio_context dev, gpio_dir_t dir)
{
if (dev->phy_pin >= 0) {
if (mraa_gpio_write(tristate, 0) != MRAA_SUCCESS) {
// call can sometimes fail, this does not actually mean much except
// that the kernel drivers don't always behave very well
syslog(LOG_NOTICE, "edison: Failed to write to tristate");
}
int pin = dev->phy_pin;
if (!agpioOutputen[pin]) {
agpioOutputen[pin] = mraa_gpio_init_raw(outputen[pin]);
if (agpioOutputen[pin] == NULL) {
return MRAA_ERROR_INVALID_RESOURCE;
}
if (mraa_gpio_dir(agpioOutputen[pin], MRAA_GPIO_OUT) != MRAA_SUCCESS) {
return MRAA_ERROR_INVALID_RESOURCE;
}
}
int output_val = 0;
if (dir == MRAA_GPIO_OUT) {
output_val = 1;
}
if (mraa_gpio_write(agpioOutputen[pin], output_val) != MRAA_SUCCESS) {
return MRAA_ERROR_INVALID_RESOURCE;
}
}
return MRAA_SUCCESS;
}
mraa_result_t
mraa_intel_edison_gpio_dir_post(mraa_gpio_context dev, gpio_dir_t dir)
{
if (dev->phy_pin >= 0) {
return mraa_gpio_write(tristate, 1);
}
return MRAA_SUCCESS;
}
mraa_result_t
mraa_intel_edison_gpio_init_post(mraa_gpio_context dev)
{
if (dev == NULL) {
return MRAA_ERROR_INVALID_RESOURCE;
}
int sysfs, mode;
if (miniboard == 1) {
sysfs = dev->pin;
mode = 0;
} else {
sysfs = pinmodes[dev->phy_pin].gpio.sysfs;
mode = pinmodes[dev->phy_pin].gpio.mode;
}
return mraa_intel_edison_pinmode_change(sysfs, mode);
}
mraa_result_t
mraa_intel_edison_gpio_close_pre(mraa_gpio_context dev)
{
if (dev->phy_pin >= 0) {
int pin = dev->phy_pin;
if (agpioOutputen[pin]) {
mraa_gpio_close(agpioOutputen[pin]);
agpioOutputen[pin] = NULL;
}
}
return MRAA_SUCCESS;
}
mraa_result_t
mraa_intel_edison_i2c_init_pre(unsigned int bus)
{
if (miniboard == 0) {
if (bus != 6) {
syslog(LOG_ERR, "edison: You can't use that bus, switching to bus 6");
bus = 6;
}
mraa_gpio_write(tristate, 0);
mraa_gpio_context io18_gpio = mraa_gpio_init_raw(14);
mraa_gpio_context io19_gpio = mraa_gpio_init_raw(165);
mraa_gpio_dir(io18_gpio, MRAA_GPIO_IN);
mraa_gpio_dir(io19_gpio, MRAA_GPIO_IN);
mraa_gpio_close(io18_gpio);
mraa_gpio_close(io19_gpio);
mraa_gpio_context io18_enable = mraa_gpio_init_raw(236);
mraa_gpio_context io19_enable = mraa_gpio_init_raw(237);
mraa_gpio_dir(io18_enable, MRAA_GPIO_OUT);
mraa_gpio_dir(io19_enable, MRAA_GPIO_OUT);
mraa_gpio_write(io18_enable, 0);
mraa_gpio_write(io19_enable, 0);
mraa_gpio_close(io18_enable);
mraa_gpio_close(io19_enable);
mraa_gpio_context io18_pullup = mraa_gpio_init_raw(212);
mraa_gpio_context io19_pullup = mraa_gpio_init_raw(213);
mraa_gpio_dir(io18_pullup, MRAA_GPIO_IN);
mraa_gpio_dir(io19_pullup, MRAA_GPIO_IN);
mraa_gpio_close(io18_pullup);
mraa_gpio_close(io19_pullup);
mraa_intel_edison_pinmode_change(28, 1);
mraa_intel_edison_pinmode_change(27, 1);
mraa_gpio_write(tristate, 1);
} else {
if(bus != 6 && bus != 1) {
syslog(LOG_ERR, "edison: You can't use that bus, switching to bus 6");
bus = 6;
}
int scl = plat->pins[plat->i2c_bus[bus].scl].gpio.pinmap;
int sda = plat->pins[plat->i2c_bus[bus].sda].gpio.pinmap;
mraa_intel_edison_pinmode_change(sda, 1);
mraa_intel_edison_pinmode_change(scl, 1);
}
return MRAA_SUCCESS;
}
static mraa_result_t
mraa_intel_edison_misc_spi()
{
mraa_gpio_write(tristate, 0);
mraa_gpio_context io10_p1 = mraa_gpio_init_raw(263);
mraa_gpio_context io10_p2 = mraa_gpio_init_raw(240);
mraa_gpio_context io11_p1 = mraa_gpio_init_raw(262);
mraa_gpio_context io11_p2 = mraa_gpio_init_raw(241);
mraa_gpio_context io12_p1 = mraa_gpio_init_raw(242);
mraa_gpio_context io13_p1 = mraa_gpio_init_raw(243);
mraa_gpio_dir(io10_p1, MRAA_GPIO_OUT);
mraa_gpio_dir(io10_p2, MRAA_GPIO_OUT);
mraa_gpio_dir(io11_p1, MRAA_GPIO_OUT);
mraa_gpio_dir(io11_p2, MRAA_GPIO_OUT);
mraa_gpio_dir(io12_p1, MRAA_GPIO_OUT);
mraa_gpio_dir(io13_p1, MRAA_GPIO_OUT);
mraa_gpio_write(io10_p1, 1);
mraa_gpio_write(io10_p2, 0);
mraa_gpio_write(io11_p1, 1);
mraa_gpio_write(io11_p2, 0);
mraa_gpio_write(io12_p1, 0);
mraa_gpio_write(io13_p1, 0);
mraa_gpio_close(io10_p1);
mraa_gpio_close(io10_p2);
mraa_gpio_close(io11_p1);
mraa_gpio_close(io11_p2);
mraa_gpio_close(io12_p1);
mraa_gpio_close(io13_p1);
mraa_intel_edison_pinmode_change(115, 1);
mraa_intel_edison_pinmode_change(114, 1);
mraa_intel_edison_pinmode_change(109, 1);
mraa_gpio_write(tristate, 1);
return MRAA_SUCCESS;
}
mraa_result_t
mraa_intel_edison_aio_get_fp(mraa_aio_context dev)
{
char file_path[64]= "";
snprintf(file_path, 64, "/sys/bus/iio/devices/iio:device1/in_voltage%d_raw",
dev->channel );
dev->adc_in_fp = open(file_path, O_RDONLY);
if (dev->adc_in_fp == -1) {
syslog(LOG_ERR, "edison: Failed to open Analog input raw file %s for "
"reading!", file_path);
return MRAA_ERROR_INVALID_RESOURCE;
}
return MRAA_SUCCESS;
}
mraa_result_t
mraa_intel_edison_aio_init_pre(unsigned int aio)
{
if (aio > plat->aio_count) {
syslog(LOG_ERR, "edison: Invalid analog input channel");
return MRAA_ERROR_INVALID_RESOURCE;
}
int pin = 14 + aio;
mraa_gpio_context output_e;
output_e = mraa_gpio_init_raw(outputen[pin]);
if (output_e == NULL) {
return MRAA_ERROR_INVALID_RESOURCE;
}
if (mraa_gpio_dir(output_e, MRAA_GPIO_OUT) != MRAA_SUCCESS) {
mraa_gpio_close(output_e);
return MRAA_ERROR_INVALID_RESOURCE;
}
if (mraa_gpio_write(output_e, 0) != MRAA_SUCCESS) {
mraa_gpio_close(output_e);
return MRAA_ERROR_INVALID_RESOURCE;
}
mraa_gpio_close(output_e);
mraa_gpio_context pullup_pin;
pullup_pin = mraa_gpio_init_raw(pullup_map[pin]);
if (pullup_pin == NULL) {
return MRAA_ERROR_INVALID_RESOURCE;
}
if (mraa_gpio_dir(pullup_pin, MRAA_GPIO_IN) != MRAA_SUCCESS) {
mraa_gpio_close(pullup_pin);
return MRAA_ERROR_INVALID_RESOURCE;
}
mraa_gpio_close(pullup_pin);
return MRAA_SUCCESS;
}
mraa_result_t
mraa_intel_edison_aio_init_post(mraa_aio_context dev)
{
return mraa_gpio_write(tristate, 1);
}
mraa_result_t
mraa_intel_edison_pwm_init_pre(int pin)
{
if (miniboard == 1) {
return mraa_intel_edison_pinmode_change(plat->pins[pin].gpio.pinmap, 1);
}
if (pin < 0 || pin > 19) {
return MRAA_ERROR_INVALID_RESOURCE;
}
if (!plat->pins[pin].capabilites.pwm) {
return MRAA_ERROR_INVALID_RESOURCE;
}
mraa_gpio_context output_e;
output_e = mraa_gpio_init_raw(outputen[pin]);
if (output_e == NULL) {
return MRAA_ERROR_INVALID_RESOURCE;
}
if (mraa_gpio_dir(output_e, MRAA_GPIO_OUT) != MRAA_SUCCESS) {
mraa_gpio_close(output_e);
return MRAA_ERROR_INVALID_RESOURCE;
}
if (mraa_gpio_write(output_e, 1) != MRAA_SUCCESS) {
mraa_gpio_close(output_e);
return MRAA_ERROR_INVALID_RESOURCE;
}
mraa_gpio_close(output_e);
mraa_gpio_context pullup_pin;
pullup_pin = mraa_gpio_init_raw(pullup_map[pin]);
if (pullup_pin == NULL) {
return MRAA_ERROR_INVALID_RESOURCE;
}
if (mraa_gpio_dir(pullup_pin, MRAA_GPIO_IN) != MRAA_SUCCESS) {
mraa_gpio_close(pullup_pin);
return MRAA_ERROR_INVALID_RESOURCE;
}
mraa_gpio_close(pullup_pin);
mraa_intel_edison_pinmode_change(plat->pins[pin].gpio.pinmap, 1);
return MRAA_SUCCESS;
}
mraa_result_t
mraa_intel_edison_pwm_init_post(mraa_pwm_context pwm)
{
return mraa_gpio_write(tristate, 1);
}
mraa_result_t
mraa_intel_edison_spi_init_pre(int bus)
{
if (miniboard == 1) {
mraa_intel_edison_pinmode_change(115, 1);
mraa_intel_edison_pinmode_change(114, 1);
mraa_intel_edison_pinmode_change(109, 1);
return MRAA_SUCCESS;
}
mraa_gpio_write(tristate, 0);
mraa_gpio_context io10_out = mraa_gpio_init_raw(258);
mraa_gpio_context io11_out = mraa_gpio_init_raw(259);
mraa_gpio_context io12_out = mraa_gpio_init_raw(260);
mraa_gpio_context io13_out = mraa_gpio_init_raw(261);
mraa_gpio_dir(io10_out, MRAA_GPIO_OUT);
mraa_gpio_dir(io11_out, MRAA_GPIO_OUT);
mraa_gpio_dir(io12_out, MRAA_GPIO_OUT);
mraa_gpio_dir(io13_out, MRAA_GPIO_OUT);
mraa_gpio_write(io10_out, 1);
mraa_gpio_write(io11_out, 1);
mraa_gpio_write(io12_out, 0);
mraa_gpio_write(io13_out, 1);
mraa_gpio_close(io10_out);
mraa_gpio_close(io11_out);
mraa_gpio_close(io12_out);
mraa_gpio_close(io13_out);
mraa_gpio_context io10_pull = mraa_gpio_init_raw(226);
mraa_gpio_context io11_pull = mraa_gpio_init_raw(227);
mraa_gpio_context io12_pull = mraa_gpio_init_raw(228);
mraa_gpio_context io13_pull = mraa_gpio_init_raw(229);
mraa_gpio_dir(io10_pull, MRAA_GPIO_IN);
mraa_gpio_dir(io11_pull, MRAA_GPIO_IN);
mraa_gpio_dir(io12_pull, MRAA_GPIO_IN);
mraa_gpio_dir(io13_pull, MRAA_GPIO_IN);
mraa_gpio_close(io10_pull);
mraa_gpio_close(io11_pull);
mraa_gpio_close(io12_pull);
mraa_gpio_close(io13_pull);
return MRAA_SUCCESS;
}
mraa_result_t
mraa_intel_edison_spi_init_post(mraa_spi_context spi)
{
return mraa_gpio_write(tristate, 1);
}
mraa_result_t
mraa_intel_edison_gpio_mode_replace(mraa_gpio_context dev, gpio_mode_t mode)
{
if (dev->value_fp != -1) {
if (close(dev->value_fp) != 0) {
return MRAA_ERROR_INVALID_RESOURCE;
}
dev->value_fp = -1;
}
mraa_gpio_context pullup_e;
pullup_e = mraa_gpio_init_raw(pullup_map[dev->phy_pin]);
if (pullup_e == NULL) {
return MRAA_ERROR_INVALID_RESOURCE;
}
if (mraa_gpio_dir(pullup_e, MRAA_GPIO_IN) != MRAA_SUCCESS) {
syslog(LOG_ERR, "edison: Failed to set gpio mode-pullup");
mraa_gpio_close(pullup_e);
return MRAA_ERROR_INVALID_RESOURCE;
}
int value = -1;
switch(mode) {
case MRAA_GPIO_STRONG:
break;
case MRAA_GPIO_PULLUP:
value = 1;
break;
case MRAA_GPIO_PULLDOWN:
value = 0;
break;
case MRAA_GPIO_HIZ:
return MRAA_SUCCESS;
break;
default:
return MRAA_ERROR_FEATURE_NOT_IMPLEMENTED;
}
if (value != -1) {
if (mraa_gpio_dir(pullup_e, MRAA_GPIO_OUT) != MRAA_SUCCESS) {
syslog(LOG_ERR, "edison: Error setting pullup");
mraa_gpio_close(pullup_e);
return MRAA_ERROR_INVALID_RESOURCE;
}
if (mraa_gpio_write(pullup_e, value)!= MRAA_SUCCESS) {
syslog(LOG_ERR, "edison: Error setting pullup");
mraa_gpio_close(pullup_e);
return MRAA_ERROR_INVALID_RESOURCE;
}
}
return mraa_gpio_close(pullup_e);
}
mraa_result_t
mraa_intel_edsion_mb_gpio_mode(mraa_gpio_context dev, gpio_mode_t mode)
{
if (dev->value_fp != -1) {
if (close(dev->value_fp) != 0) {
return MRAA_ERROR_INVALID_RESOURCE;
}
dev->value_fp = -1;
}
char filepath[MAX_SIZE];
snprintf(filepath, MAX_SIZE,
SYSFS_PINMODE_PATH "%d/current_pullmode", dev->pin);
int drive = open(filepath, O_WRONLY);
if (drive == -1) {
syslog(LOG_ERR, "edison: Failed to open drive for writing");
return MRAA_ERROR_INVALID_RESOURCE;
}
char bu[MAX_SIZE];
int length;
switch(mode) {
case MRAA_GPIO_STRONG:
close(drive);
return MRAA_SUCCESS;
case MRAA_GPIO_PULLUP:
length = snprintf(bu, sizeof(bu), "pullup");
break;
case MRAA_GPIO_PULLDOWN:
length = snprintf(bu, sizeof(bu), "pulldown");
break;
case MRAA_GPIO_HIZ:
length = snprintf(bu, sizeof(bu), "nopull");
break;
default:
close(drive);
return MRAA_ERROR_FEATURE_NOT_IMPLEMENTED;
}
if (write(drive, bu, length*sizeof(char)) == -1) {
syslog(LOG_ERR, "edison: Failed to write to drive mode");
close(drive);
return MRAA_ERROR_INVALID_RESOURCE;
}
if (close(drive) != 0) {
return MRAA_ERROR_INVALID_RESOURCE;
}
return MRAA_SUCCESS;
}
mraa_result_t
mraa_intel_edison_uart_init_pre(int index)
{
if (miniboard == 0) {
mraa_gpio_write(tristate, 0);
mraa_gpio_context io0_output = mraa_gpio_init_raw(248);
mraa_gpio_context io0_pullup = mraa_gpio_init_raw(216);
mraa_gpio_context io1_output = mraa_gpio_init_raw(249);
mraa_gpio_context io1_pullup = mraa_gpio_init_raw(217);
mraa_gpio_dir(io0_output, MRAA_GPIO_OUT);
mraa_gpio_dir(io0_pullup, MRAA_GPIO_OUT);
mraa_gpio_dir(io1_output, MRAA_GPIO_OUT);
mraa_gpio_dir(io1_pullup, MRAA_GPIO_IN);
mraa_gpio_write(io0_output, 0);
mraa_gpio_write(io0_pullup, 0);
mraa_gpio_write(io1_output, 1);
mraa_gpio_close(io0_output);
mraa_gpio_close(io0_pullup);
mraa_gpio_close(io1_output);
mraa_gpio_close(io1_pullup);
}
mraa_result_t ret;
ret = mraa_intel_edison_pinmode_change(130,1); //IO0 RX
ret = mraa_intel_edison_pinmode_change(131,1); //IO1 TX
return ret;
}
mraa_result_t
mraa_intel_edison_uart_init_post(mraa_uart_context uart)
{
return mraa_gpio_write(tristate, 1);
}
static mraa_result_t
mraa_intel_edsion_mmap_unsetup()
{
if (mmap_reg == NULL) {
syslog(LOG_ERR, "edison mmap: null register cant unsetup");
return MRAA_ERROR_INVALID_RESOURCE;
}
munmap(mmap_reg, mmap_size);
mmap_reg = NULL;
if (close(mmap_fd) != 0) {
return MRAA_ERROR_INVALID_RESOURCE;
}
return MRAA_SUCCESS;
}
mraa_result_t
mraa_intel_edison_mmap_write(mraa_gpio_context dev, int value)
{
uint8_t offset = ((dev->pin / 32) * sizeof(uint32_t));
uint8_t valoff;
if (value) {
valoff = 0x34;
} else {
valoff = 0x4c;
}
*(volatile uint32_t*) (mmap_reg + offset + valoff) =
(uint32_t)(1 << (dev->pin % 32));
return MRAA_SUCCESS;
}
int
mraa_intel_edison_mmap_read(mraa_gpio_context dev)
{
uint8_t offset = ((dev->pin / 32) * sizeof(uint32_t));
uint32_t value;
value = *(volatile uint32_t*) (mmap_reg +0x04+ offset);
if (value&(uint32_t)(1 << (dev->pin % 32))) {
return 1;
}
return 0;
}
mraa_result_t
mraa_intel_edison_mmap_setup(mraa_gpio_context dev, mraa_boolean_t en)
{
if (dev == NULL) {
syslog(LOG_ERR, "edison mmap: context not valid");
return MRAA_ERROR_INVALID_HANDLE;
}
if (en == 0) {
if (dev->mmap_write == NULL && dev->mmap_read == NULL) {
syslog(LOG_ERR, "edison mmap: can't disable disabled mmap gpio");
return MRAA_ERROR_INVALID_PARAMETER;
}
dev->mmap_write = NULL;
dev->mmap_read = NULL;
mmap_count--;
if (mmap_count == 0) {
return mraa_intel_edsion_mmap_unsetup();
}
return MRAA_SUCCESS;
}
if (dev->mmap_write != NULL && dev->mmap_read != NULL) {
syslog(LOG_ERR, "edison mmap: can't enable enabled mmap gpio");
return MRAA_ERROR_INVALID_PARAMETER;
}
//Might need to make some elements of this thread safe.
//For example only allow one thread to enter the following block
//to prevent mmap'ing twice.
if (mmap_reg == NULL) {
if ((mmap_fd = open(MMAP_PATH, O_RDWR)) < 0) {
syslog(LOG_ERR, "edison map: unable to open resource0 file");
return MRAA_ERROR_INVALID_HANDLE;
}
struct stat fd_stat;
fstat(mmap_fd, &fd_stat);
mmap_size = fd_stat.st_size;
mmap_reg = (uint8_t*) mmap(NULL, fd_stat.st_size,
PROT_READ | PROT_WRITE,
MAP_FILE | MAP_SHARED,
mmap_fd, 0);
if (mmap_reg == MAP_FAILED) {
syslog(LOG_ERR, "edison mmap: failed to mmap");
mmap_reg = NULL;
close(mmap_fd);
return MRAA_ERROR_NO_RESOURCES;
}
}
dev->mmap_write = &mraa_intel_edison_mmap_write;
dev->mmap_read = &mraa_intel_edison_mmap_read;
mmap_count++;
return MRAA_SUCCESS;
}
mraa_result_t
mraa_intel_edison_i2c_freq(mraa_i2c_context dev, mraa_i2c_mode_t mode)
{
int sysnode = -1;
switch (dev->busnum) {
case 1:
sysnode = open("/sys/devices/pci0000:00/0000:00:08.0/i2c_dw_sysnode/mode", O_RDWR);
break;
case 6:
sysnode = open("/sys/devices/pci0000:00/0000:00:09.1/i2c_dw_sysnode/mode", O_RDWR);
break;
default:
syslog(LOG_NOTICE, "i2c bus selected does not support frequency changes");
return MRAA_ERROR_FEATURE_NOT_SUPPORTED;
}
if (sysnode == -1) {
return MRAA_ERROR_INVALID_RESOURCE;
}
char bu[5];
int length;
switch (mode) {
case MRAA_I2C_STD:
length = snprintf(bu, sizeof(bu), "std");
break;
case MRAA_I2C_FAST:
length = snprintf(bu, sizeof(bu), "fast");
break;
case MRAA_I2C_HIGH:
length = snprintf(bu, sizeof(bu), "high");
break;
default:
syslog(LOG_ERR, "Invalid i2c mode selected");
close(sysnode);
return MRAA_ERROR_INVALID_PARAMETER;
}
if (write(sysnode, bu, length*sizeof(char)) == -1) {
close(sysnode);
return MRAA_ERROR_INVALID_RESOURCE;
}
close(sysnode);
return MRAA_SUCCESS;
}
mraa_result_t
mraa_intel_edison_miniboard(mraa_board_t* b)
{
miniboard = 1;
b->phy_pin_count = 56;
b->gpio_count = 56; // A bit of a hack I suppose
b->aio_count = 0;
b->pwm_default_period = 5000;
b->pwm_max_period = 218453;
b->pwm_min_period = 1;
b->pins = (mraa_pininfo_t*) malloc(sizeof(mraa_pininfo_t)*56);
if (b->pins == NULL) {
return MRAA_ERROR_UNSPECIFIED;
}
advance_func->gpio_init_post = &mraa_intel_edison_gpio_init_post;
advance_func->pwm_init_pre = &mraa_intel_edison_pwm_init_pre;
advance_func->i2c_init_pre = &mraa_intel_edison_i2c_init_pre;
advance_func->i2c_set_frequency_replace = &mraa_intel_edison_i2c_freq;
advance_func->spi_init_pre = &mraa_intel_edison_spi_init_pre;
advance_func->gpio_mode_replace = &mraa_intel_edsion_mb_gpio_mode;
advance_func->uart_init_pre = &mraa_intel_edison_uart_init_pre;
advance_func->gpio_mmap_setup = &mraa_intel_edison_mmap_setup;
int pos = 0;
strncpy(b->pins[pos].name, "J17-1", 8);
b->pins[pos].capabilites = (mraa_pincapabilities_t) {1,1,1,0,0,0,0};
b->pins[pos].gpio.pinmap = 182;
b->pins[pos].gpio.mux_total = 0;
b->pins[pos].pwm.pinmap = 2;
b->pins[pos].pwm.parent_id = 0;
b->pins[pos].pwm.mux_total = 0;
pos++;
strncpy(b->pins[pos].name, "J17-2", 8);
b->pins[pos].capabilites = (mraa_pincapabilities_t) {1,0,0,0,0,0,0,0};
pos++;
strncpy(b->pins[pos].name, "J17-3", 8);
b->pins[pos].capabilites = (mraa_pincapabilities_t) {1,0,0,0,0,0,0,0};
pos++;
strncpy(b->pins[pos].name, "J17-4", 8);
b->pins[pos].capabilites = (mraa_pincapabilities_t) {1,0,0,0,0,0,0,0};
pos++;
strncpy(b->pins[pos].name, "J17-5", 8);
b->pins[pos].capabilites = (mraa_pincapabilities_t) {1,1,0,0,0,0,0,0};
b->pins[pos].gpio.pinmap = 135;
b->pins[pos].gpio.mux_total = 0;
pos++;
strncpy(b->pins[pos].name, "J17-6", 8);
b->pins[pos].capabilites = (mraa_pincapabilities_t) {1,0,0,0,0,0,0,0};
pos++;
strncpy(b->pins[pos].name, "J17-7", 8);
b->pins[pos].capabilites = (mraa_pincapabilities_t) {1,1,0,0,0,1,0,0};
b->pins[pos].gpio.pinmap = 27;
b->pins[pos].gpio.mux_total = 0;
b->pins[pos].i2c.pinmap = 1;
b->pins[pos].i2c.mux_total = 0;
pos++;
strncpy(b->pins[pos].name, "J17-8", 8);
b->pins[pos].capabilites = (mraa_pincapabilities_t) {1,1,0,0,0,1,0,0};
b->pins[pos].gpio.pinmap = 20;
b->pins[pos].gpio.mux_total = 0;
b->pins[pos].i2c.pinmap = 1;
b->pins[pos].i2c.mux_total = 0;
pos++;
strncpy(b->pins[pos].name, "J17-9", 8);
b->pins[pos].capabilites = (mraa_pincapabilities_t) {1,1,0,0,0,1,0,0};
b->pins[pos].gpio.pinmap = 28;
b->pins[pos].gpio.mux_total = 0;
b->pins[pos].i2c.pinmap = 1;
b->pins[pos].i2c.mux_total = 0;
pos++;
strncpy(b->pins[pos].name, "J17-10", 8);
b->pins[pos].capabilites = (mraa_pincapabilities_t) {1,1,0,0,1,0,0,0};
b->pins[pos].gpio.pinmap = 111;
b->pins[pos].gpio.mux_total = 0;
b->pins[pos].spi.pinmap = 5;
b->pins[pos].spi.mux_total = 0;
pos++;
strncpy(b->pins[pos].name, "J17-11", 8);
b->pins[pos].capabilites = (mraa_pincapabilities_t) {1,1,0,0,1,0,0,0};
b->pins[pos].gpio.pinmap = 109;
b->pins[pos].gpio.mux_total = 0;
b->pins[pos].spi.pinmap = 5;
b->pins[pos].spi.mux_total = 0;
pos++;
strncpy(b->pins[pos].name, "J17-12", 8);
b->pins[pos].capabilites = (mraa_pincapabilities_t) {1,1,0,0,1,0,0,0};
b->pins[pos].gpio.pinmap = 115;
b->pins[pos].gpio.mux_total = 0;
b->pins[pos].spi.pinmap = 5;
b->pins[pos].spi.mux_total = 0;
pos++;
strncpy(b->pins[pos].name, "J17-13", 8);
b->pins[pos].capabilites = (mraa_pincapabilities_t) {1,0,0,0,0,0,0,0};
pos++;
strncpy(b->pins[pos].name, "J17-14", 8);
b->pins[pos].capabilites = (mraa_pincapabilities_t) {1,1,0,0,0,0,0,0};
b->pins[pos].gpio.pinmap = 128;
b->pins[pos].gpio.parent_id = 0;
b->pins[pos].gpio.mux_total = 0;
pos++;
strncpy(b->pins[pos].name, "J18-1", 8);
b->pins[pos].capabilites = (mraa_pincapabilities_t) {1,1,1,0,0,0,0};
b->pins[pos].gpio.pinmap = 13;
b->pins[pos].gpio.mux_total = 0;
b->pins[pos].pwm.pinmap = 1;
b->pins[pos].pwm.parent_id = 0;
b->pins[pos].pwm.mux_total = 0;
pos++;
strncpy(b->pins[pos].name, "J18-2", 8);
b->pins[pos].capabilites = (mraa_pincapabilities_t) {1,1,0,0,0,0,0};
b->pins[pos].gpio.pinmap = 165;
b->pins[pos].gpio.mux_total = 0;
pos++;
strncpy(b->pins[pos].name, "J18-3", 8);
b->pins[pos].capabilites = (mraa_pincapabilities_t) {1,0,0,0,0,0,0,0};
pos++;
strncpy(b->pins[pos].name, "J18-4", 8);
b->pins[pos].capabilites = (mraa_pincapabilities_t) {1,0,0,0,0,0,0,0};
pos++;
strncpy(b->pins[pos].name, "J18-5", 8);
b->pins[pos].capabilites = (mraa_pincapabilities_t) {1,0,0,0,0,0,0,0};
pos++;
strncpy(b->pins[pos].name, "J18-6", 8);
b->pins[pos].capabilites = (mraa_pincapabilities_t) {1,1,0,0,0,1,0,0};
b->pins[pos].gpio.pinmap = 19;
b->pins[pos].gpio.mux_total = 0;
b->pins[pos].i2c.pinmap = 1;
b->pins[pos].i2c.mux_total = 0;
pos++;
strncpy(b->pins[pos].name, "J18-7", 8);
b->pins[pos].capabilites = (mraa_pincapabilities_t) {1,1,1,0,0,0,0};
b->pins[pos].gpio.pinmap = 12;
b->pins[pos].gpio.mux_total = 0;
b->pins[pos].pwm.pinmap = 0;
b->pins[pos].pwm.parent_id = 0;
b->pins[pos].pwm.mux_total = 0;
pos++;
strncpy(b->pins[pos].name, "J18-8", 8);
b->pins[pos].capabilites = (mraa_pincapabilities_t) {1,1,1,0,0,0,0};
b->pins[pos].gpio.pinmap = 183;
b->pins[pos].gpio.mux_total = 0;
b->pins[pos].pwm.pinmap = 3;
b->pins[pos].pwm.parent_id = 0;
b->pins[pos].pwm.mux_total = 0;
pos++;
strncpy(b->pins[pos].name, "J18-9", 8);
b->pins[pos].capabilites = (mraa_pincapabilities_t) {1,0,0,0,0,0,0,0};
pos++;
strncpy(b->pins[pos].name, "J18-10", 8);
b->pins[pos].capabilites = (mraa_pincapabilities_t) {1,1,0,0,1,0,0,0};
b->pins[pos].gpio.pinmap = 110;
b->pins[pos].gpio.mux_total = 0;
b->pins[pos].spi.pinmap = 5;
b->pins[pos].spi.mux_total = 0;
pos++;
strncpy(b->pins[pos].name, "J18-11", 8);
b->pins[pos].capabilites = (mraa_pincapabilities_t) {1,1,0,0,1,0,0,0};
b->pins[pos].gpio.pinmap = 114;
b->pins[pos].gpio.mux_total = 0;
b->pins[pos].spi.pinmap = 5;
b->pins[pos].spi.mux_total = 0;
pos++;
strncpy(b->pins[pos].name, "J18-12", 8);
b->pins[pos].capabilites = (mraa_pincapabilities_t) {1,1,0,0,0,0,0,0};
b->pins[pos].gpio.pinmap = 129;
b->pins[pos].gpio.mux_total = 0;
pos++;
strncpy(b->pins[pos].name, "J18-13", 8);
b->pins[pos].capabilites = (mraa_pincapabilities_t) {1,1,0,0,0,0,0,1};
b->pins[pos].gpio.pinmap = 130;
b->pins[pos].gpio.mux_total = 0;
b->pins[pos].uart.pinmap = 0;
b->pins[pos].uart.parent_id = 0;
b->pins[pos].uart.mux_total = 0;
pos++;
strncpy(b->pins[pos].name, "J18-14", 8);
b->pins[pos].capabilites = (mraa_pincapabilities_t) {1,0,0,0,0,0,0,0};
pos++;
strncpy(b->pins[pos].name, "J19-1", 8);
b->pins[pos].capabilites = (mraa_pincapabilities_t) {1,0,0,0,0,0,0,0};
pos++;
strncpy(b->pins[pos].name, "J19-2", 8);
b->pins[pos].capabilites = (mraa_pincapabilities_t) {1,0,0,0,0,0,0,0};
pos++;
strncpy(b->pins[pos].name, "J19-3", 8);
b->pins[pos].capabilites = (mraa_pincapabilities_t) {1,0,0,0,0,0,0,0};
pos++;
strncpy(b->pins[pos].name, "J19-4", 8);
b->pins[pos].capabilites = (mraa_pincapabilities_t) {1,1,0,0,0,0,0,0};
b->pins[pos].gpio.pinmap = 44;
b->pins[pos].gpio.mux_total = 0;
pos++;
strncpy(b->pins[pos].name, "J19-5", 8);
b->pins[pos].capabilites = (mraa_pincapabilities_t) {1,1,0,0,0,0,0,0};
b->pins[pos].gpio.pinmap = 46;
b->pins[pos].gpio.mux_total = 0;
pos++;
strncpy(b->pins[pos].name, "J19-6", 8);
b->pins[pos].capabilites = (mraa_pincapabilities_t) {1,1,0,0,0,0,0,0};
b->pins[pos].gpio.pinmap = 48;
b->pins[pos].gpio.mux_total = 0;
pos++;
strncpy(b->pins[pos].name, "J19-7", 8);
b->pins[pos].capabilites = (mraa_pincapabilities_t) {1,0,0,0,0,0,0,0};
pos++;
strncpy(b->pins[pos].name, "J19-8", 8);
b->pins[pos].capabilites = (mraa_pincapabilities_t) {1,1,0,0,0,0,0,1};
b->pins[pos].gpio.pinmap = 131;
b->pins[pos].gpio.mux_total = 0;
b->pins[pos].uart.pinmap = 0;
b->pins[pos].uart.parent_id = 0;
b->pins[pos].uart.mux_total = 0;
pos++;
strncpy(b->pins[pos].name, "J19-9", 8);
b->pins[pos].capabilites = (mraa_pincapabilities_t) {1,1,0,0,0,0,0,0};
b->pins[pos].gpio.pinmap = 14;
b->pins[pos].gpio.mux_total = 0;
pos++;
strncpy(b->pins[pos].name, "J19-10", 8);
b->pins[pos].capabilites = (mraa_pincapabilities_t) {1,1,0,0,0,0,0,0};
b->pins[pos].gpio.pinmap = 40;
b->pins[pos].gpio.mux_total = 0;
pos++;
strncpy(b->pins[pos].name, "J19-11", 8);
b->pins[pos].capabilites = (mraa_pincapabilities_t) {1,1,0,0,0,0,0,0};
b->pins[pos].gpio.pinmap = 43;
b->pins[pos].gpio.mux_total = 0;
pos++;
strncpy(b->pins[pos].name, "J19-12", 8);
b->pins[pos].capabilites = (mraa_pincapabilities_t) {1,1,0,0,0,0,0,0};
b->pins[pos].gpio.pinmap = 77;
b->pins[pos].gpio.mux_total = 0;
pos++;
strncpy(b->pins[pos].name, "J19-13", 8);
b->pins[pos].capabilites = (mraa_pincapabilities_t) {1,1,0,0,0,0,0,0};
b->pins[pos].gpio.pinmap = 82;
b->pins[pos].gpio.mux_total = 0;
pos++;
strncpy(b->pins[pos].name, "J19-14", 8);
b->pins[pos].capabilites = (mraa_pincapabilities_t) {1,1,0,0,0,0,0,0};
b->pins[pos].gpio.pinmap = 83;
b->pins[pos].gpio.mux_total = 0;
pos++;
strncpy(b->pins[pos].name, "J20-1", 8);
b->pins[pos].capabilites = (mraa_pincapabilities_t) {1,0,0,0,0,0,0,0};
pos++;
strncpy(b->pins[pos].name, "J20-2", 8);
b->pins[pos].capabilites = (mraa_pincapabilities_t) {1,0,0,0,0,0,0,0};
pos++;
strncpy(b->pins[pos].name, "J20-3", 8);
b->pins[pos].capabilites = (mraa_pincapabilities_t) {1,0,0,0,0,0,0,0};
pos++;
strncpy(b->pins[pos].name, "J20-4", 8);
b->pins[pos].capabilites = (mraa_pincapabilities_t) {1,1,0,0,0,0,0,0};
b->pins[pos].gpio.pinmap = 45;
b->pins[pos].gpio.mux_total = 0;