/*
* Author: Thomas Ingleby <thomas.c.ingleby@intel.com>
* Author: Michael Ring <mail@michael-ring.org>
* 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/mman.h>
#include <mraa/common.h>
#include "common.h"
#include "arm/raspberry_pi.h"
#define PLATFORM_NAME_RASPBERRY_PI_B_REV_1 "Raspberry Pi Model B Rev 1"
#define PLATFORM_NAME_RASPBERRY_PI_A_REV_2 "Raspberry Pi Model A Rev 2"
#define PLATFORM_NAME_RASPBERRY_PI_B_REV_2 "Raspberry Pi Model B Rev 2"
#define PLATFORM_NAME_RASPBERRY_PI_B_PLUS_REV_1 "Raspberry Pi Model B+ Rev 1"
#define PLATFORM_NAME_RASPBERRY_PI_COMPUTE_MODULE_REV_1 "Raspberry Pi Compute Module Rev 1"
#define PLATFORM_NAME_RASPBERRY_PI_A_PLUS_REV_1 "Raspberry Pi Model A+ Rev 1"
#define PLATFORM_NAME_RASPBERRY_PI2_B_REV_1 "Raspberry Pi 2 Model B Rev 1"
#define PLATFORM_RASPBERRY_PI_B_REV_1 1
#define PLATFORM_RASPBERRY_PI_A_REV_2 2
#define PLATFORM_RASPBERRY_PI_B_REV_2 3
#define PLATFORM_RASPBERRY_PI_B_PLUS_REV_1 4
#define PLATFORM_RASPBERRY_PI_COMPUTE_MODULE_REV_1 5
#define PLATFORM_RASPBERRY_PI_A_PLUS_REV_1 6
#define PLATFORM_RASPBERRY_PI2_B_REV_1 7
#define MMAP_PATH "/dev/mem"
#define BCM2835_PERI_BASE 0x20000000
#define BCM2835_GPIO_BASE (BCM2835_PERI_BASE + 0x200000)
#define BCM2836_PERI_BASE 0x3f000000
#define BCM2836_GPIO_BASE (BCM2836_PERI_BASE + 0x200000)
#define BCM2835_BLOCK_SIZE (4 * 1024)
#define BCM2836_BLOCK_SIZE (4 * 1024)
#define BCM283X_GPSET0 0x001c
#define BCM283X_GPCLR0 0x0028
#define BCM2835_GPLEV0 0x0034
#define MAX_SIZE 64
// MMAP
static uint8_t* mmap_reg = NULL;
static int mmap_fd = 0;
static int mmap_size;
static unsigned int mmap_count = 0;
static int platform_detected = 0;
mraa_result_t
mraa_raspberry_pi_spi_init_pre(int index)
{
char devpath[MAX_SIZE];
sprintf(devpath, "/dev/spidev%u.0", plat->spi_bus[index].bus_id);
if (!mraa_file_exist(devpath)) {
syslog(LOG_ERR, "spi: Device not initialized");
syslog(LOG_ERR, "spi: If you run a kernel >=3.18 then you will have to add dtparam=spi=on "
"to /boot/config.txt and reboot");
syslog(LOG_INFO, "spi: trying modprobe for spi-bcm2708");
system("modprobe spi-bcm2708 >/dev/null 2>&1");
system("modprobe spi_bcm2708 >/dev/null 2>&1");
if (!mraa_file_exist(devpath)) {
return MRAA_ERROR_NO_RESOURCES;
}
}
return MRAA_SUCCESS;
}
mraa_result_t
mraa_raspberry_pi_i2c_init_pre(unsigned int bus)
{
char devpath[MAX_SIZE];
sprintf(devpath, "/dev/i2c-%u", bus);
if (!mraa_file_exist(devpath)) {
syslog(LOG_INFO, "spi: trying modprobe for i2c-bcm2708 & i2c-dev");
system("modprobe i2c-bcm2708 >/dev/null 2>&1");
system("modprobe i2c-dev >/dev/null 2>&1");
system("modprobe i2c_bcm2708 >/dev/null 2>&1");
system("modprobe i2c_dev >/dev/null 2>&1");
}
if (!mraa_file_exist(devpath)) {
syslog(LOG_ERR, "i2c: Device not initialized");
if (platform_detected == PLATFORM_RASPBERRY_PI_B_REV_1) {
syslog(LOG_ERR, "i2c: If you run a kernel >=3.18 then you will have to add "
"dtparam=i2c0=on to /boot/config.txt and reboot");
} else {
syslog(LOG_ERR, "i2c: If you run a kernel >=3.18 then you will have to add "
"dtparam=i2c1=on to /boot/config.txt and reboot");
}
return MRAA_ERROR_NO_RESOURCES;
}
return MRAA_SUCCESS;
}
mraa_result_t
mraa_raspberry_pi_mmap_write(mraa_gpio_context dev, int value)
{
volatile uint32_t* addr;
if (value) {
*(volatile uint32_t*) (mmap_reg + BCM283X_GPSET0 + (dev->pin / 32) * 4) =
(uint32_t)(1 << (dev->pin % 32));
} else {
*(volatile uint32_t*) (mmap_reg + BCM283X_GPCLR0 + (dev->pin / 32) * 4) =
(uint32_t)(1 << (dev->pin % 32));
}
return MRAA_SUCCESS;
}
static mraa_result_t
mraa_raspberry_pi_mmap_unsetup()
{
if (mmap_reg == NULL) {
syslog(LOG_ERR, "raspberry 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;
}
int
mraa_raspberry_pi_mmap_read(mraa_gpio_context dev)
{
uint32_t value = *(volatile uint32_t*) (mmap_reg + BCM2835_GPLEV0 + (dev->pin / 32) * 4);
if (value & (uint32_t)(1 << (dev->pin % 32))) {
return 1;
}
return 0;
}
mraa_result_t
mraa_raspberry_pi_mmap_setup(mraa_gpio_context dev, mraa_boolean_t en)
{
if (dev == NULL) {
syslog(LOG_ERR, "raspberry mmap: context not valid");
return MRAA_ERROR_INVALID_HANDLE;
}
if (en == 0) {
if (dev->mmap_write == NULL && dev->mmap_read == NULL) {
syslog(LOG_ERR, "raspberry 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_raspberry_pi_mmap_unsetup();
}
return MRAA_SUCCESS;
}
if (dev->mmap_write != NULL && dev->mmap_read != NULL) {
syslog(LOG_ERR, "raspberry 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, "raspberry map: unable to open resource0 file");
return MRAA_ERROR_INVALID_HANDLE;
}
if (platform_detected == PLATFORM_RASPBERRY_PI2_B_REV_1) {
mmap_reg = (uint8_t*) mmap(NULL, BCM2836_BLOCK_SIZE, PROT_READ | PROT_WRITE,
MAP_FILE | MAP_SHARED, mmap_fd, BCM2836_GPIO_BASE);
} else {
mmap_reg = (uint8_t*) mmap(NULL, BCM2835_BLOCK_SIZE, PROT_READ | PROT_WRITE,
MAP_FILE | MAP_SHARED, mmap_fd, BCM2835_GPIO_BASE);
}
if (mmap_reg == MAP_FAILED) {
syslog(LOG_ERR, "raspberry mmap: failed to mmap");
mmap_reg = NULL;
close(mmap_fd);
return MRAA_ERROR_NO_RESOURCES;
}
}
dev->mmap_write = &mraa_raspberry_pi_mmap_write;
dev->mmap_read = &mraa_raspberry_pi_mmap_read;
mmap_count++;
return MRAA_SUCCESS;
}
mraa_board_t*
mraa_raspberry_pi()
{
mraa_board_t* b = (mraa_board_t*) calloc(1, sizeof(mraa_board_t));
if (b == NULL) {
return NULL;
}
b->phy_pin_count = 0;
size_t len = 100;
char* line = calloc(len, sizeof(char));
FILE* fh = fopen("/proc/cpuinfo", "r");
if (fh != NULL) {
while (getline(&line, &len, fh) != -1) {
if (strncmp(line, "Revision", 8) == 0) {
if (strstr(line, "0002") || strstr(line, "0003")) {
b->platform_name = PLATFORM_NAME_RASPBERRY_PI_B_REV_1;
platform_detected = PLATFORM_RASPBERRY_PI_B_REV_1;
b->phy_pin_count = MRAA_RASPBERRY_PI_B_REV_1_PINCOUNT;
} else if (strstr(line, "0004") || strstr(line, "0005") || strstr(line, "0006") ||
strstr(line, "000d") || strstr(line, "000e") || strstr(line, "000f")) {
b->platform_name = PLATFORM_NAME_RASPBERRY_PI_B_REV_2;
platform_detected = PLATFORM_RASPBERRY_PI_B_REV_2;
b->phy_pin_count = MRAA_RASPBERRY_PI_AB_REV_2_PINCOUNT;
} else if (strstr(line, "0007") || strstr(line, "0008") || strstr(line, "0009")) {
b->platform_name = PLATFORM_NAME_RASPBERRY_PI_A_REV_2;
platform_detected = PLATFORM_RASPBERRY_PI_A_REV_2;
b->phy_pin_count = MRAA_RASPBERRY_PI_AB_REV_2_PINCOUNT;
} else if (strstr(line, "0010")) {
b->platform_name = PLATFORM_NAME_RASPBERRY_PI_B_PLUS_REV_1;
platform_detected = PLATFORM_RASPBERRY_PI_B_PLUS_REV_1;
b->phy_pin_count = MRAA_RASPBERRY_PI_AB_PLUS_PINCOUNT;
} else if (strstr(line, "0011")) {
b->platform_name = PLATFORM_NAME_RASPBERRY_PI_COMPUTE_MODULE_REV_1;
platform_detected = PLATFORM_RASPBERRY_PI_COMPUTE_MODULE_REV_1;
b->phy_pin_count = MRAA_RASPBERRY_PI_COMPUTE_MODULE_PINCOUNT;
} else if (strstr(line, "0012")) {
b->platform_name = PLATFORM_NAME_RASPBERRY_PI_A_PLUS_REV_1;
platform_detected = PLATFORM_RASPBERRY_PI_A_PLUS_REV_1;
b->phy_pin_count = MRAA_RASPBERRY_PI_AB_PLUS_PINCOUNT;
} else if (strstr(line, "a01041") || strstr(line, "a21041")) {
b->platform_name = PLATFORM_NAME_RASPBERRY_PI2_B_REV_1;
platform_detected = PLATFORM_RASPBERRY_PI2_B_REV_1;
b->phy_pin_count = MRAA_RASPBERRY_PI2_B_REV_1_PINCOUNT;
} else {
b->platform_name = PLATFORM_NAME_RASPBERRY_PI_B_REV_1;
platform_detected = PLATFORM_RASPBERRY_PI_B_REV_1;
b->phy_pin_count = MRAA_RASPBERRY_PI_B_REV_1_PINCOUNT;
}
}
}
fclose(fh);
}
free(line);
b->aio_count = 0;
b->adc_raw = 0;
b->adc_supported = 0;
b->pwm_default_period = 500;
b->pwm_max_period = 2147483;
b->pwm_min_period = 1;
if (b->phy_pin_count == 0) {
free(b);
syslog(LOG_ERR, "raspberrypi: Failed to detect platform revision");
return NULL;
}
b->adv_func = (mraa_adv_func_t*) calloc(1, sizeof(mraa_adv_func_t));
if (b->adv_func == NULL) {
free(b);
return NULL;
}
b->pins = (mraa_pininfo_t*) calloc(b->phy_pin_count, sizeof(mraa_pininfo_t));
if (b->pins == NULL) {
free(b->adv_func);
free(b);
return NULL;
}
b->adv_func->spi_init_pre = &mraa_raspberry_pi_spi_init_pre;
b->adv_func->i2c_init_pre = &mraa_raspberry_pi_i2c_init_pre;
b->adv_func->gpio_mmap_setup = &mraa_raspberry_pi_mmap_setup;
strncpy(b->pins[0].name, "INVALID", MRAA_PIN_NAME_SIZE);
b->pins[0].capabilites = (mraa_pincapabilities_t){ 0, 0, 0, 0, 0, 0, 0, 0 };
strncpy(b->pins[1].name, "3V3", MRAA_PIN_NAME_SIZE);
b->pins[1].capabilites = (mraa_pincapabilities_t){ 1, 0, 0, 0, 0, 0, 0, 0 };
strncpy(b->pins[2].name, "5V", MRAA_PIN_NAME_SIZE);
b->pins[2].capabilites = (mraa_pincapabilities_t){ 1, 0, 0, 0, 0, 0, 0, 0 };
strncpy(b->pins[3].name, "SDA0", MRAA_PIN_NAME_SIZE);
b->pins[3].capabilites = (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 1, 0, 0 };
b->pins[3].gpio.pinmap = 2;
b->pins[3].gpio.mux_total = 0;
b->pins[3].i2c.pinmap = 0;
b->pins[3].i2c.mux_total = 0;
strncpy(b->pins[4].name, "5V", MRAA_PIN_NAME_SIZE);
b->pins[4].capabilites = (mraa_pincapabilities_t){ 1, 0, 0, 0, 0, 0, 0, 0 };
strncpy(b->pins[5].name, "SCL0", MRAA_PIN_NAME_SIZE);
b->pins[5].capabilites = (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 1, 0, 0 };
b->pins[5].gpio.pinmap = 3;
b->pins[5].gpio.mux_total = 0;
b->pins[5].i2c.pinmap = 0;
b->pins[5].i2c.mux_total = 0;
strncpy(b->pins[6].name, "GND", MRAA_PIN_NAME_SIZE);
b->pins[6].capabilites = (mraa_pincapabilities_t){ 1, 0, 0, 0, 0, 0, 0, 0 };
strncpy(b->pins[7].name, "GPIO4", MRAA_PIN_NAME_SIZE);
b->pins[7].capabilites = (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 0 };
b->pins[7].gpio.pinmap = 4;
b->pins[7].gpio.mux_total = 0;
strncpy(b->pins[8].name, "UART_TX", MRAA_PIN_NAME_SIZE);
b->pins[8].capabilites = (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 1 };
b->pins[8].gpio.pinmap = 14;
b->pins[8].gpio.mux_total = 0;
b->pins[8].uart.parent_id = 0;
b->pins[8].uart.mux_total = 0;
strncpy(b->pins[9].name, "GND", MRAA_PIN_NAME_SIZE);
b->pins[9].capabilites = (mraa_pincapabilities_t){ 1, 0, 0, 0, 0, 0, 0, 0 };
strncpy(b->pins[10].name, "UART_RX", MRAA_PIN_NAME_SIZE);
b->pins[10].capabilites = (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 1 };
b->pins[10].gpio.pinmap = 15;
b->pins[10].gpio.mux_total = 0;
b->pins[10].uart.parent_id = 0;
b->pins[10].uart.mux_total = 0;
strncpy(b->pins[11].name, "GPIO17", MRAA_PIN_NAME_SIZE);
b->pins[11].capabilites = (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 0 };
b->pins[11].gpio.pinmap = 17;
b->pins[11].gpio.mux_total = 0;
strncpy(b->pins[12].name, "GPIO18", MRAA_PIN_NAME_SIZE);
b->pins[12].capabilites = (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 0 };
b->pins[12].gpio.pinmap = 18;
b->pins[12].gpio.mux_total = 0;
if (platform_detected == PLATFORM_RASPBERRY_PI_B_REV_1) {
strncpy(b->pins[13].name, "GPIO21", MRAA_PIN_NAME_SIZE);
b->pins[13].gpio.pinmap = 21;
} else {
strncpy(b->pins[13].name, "GPIO27", MRAA_PIN_NAME_SIZE);
b->pins[13].gpio.pinmap = 27;
}
b->pins[13].capabilites = (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 0 };
b->pins[13].gpio.mux_total = 0;
strncpy(b->pins[14].name, "GND", MRAA_PIN_NAME_SIZE);
b->pins[14].capabilites = (mraa_pincapabilities_t){ 1, 0, 0, 0, 0, 0, 0, 0 };
strncpy(b->pins[15].name, "GPIO22", MRAA_PIN_NAME_SIZE);
b->pins[15].capabilites = (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 0 };
b->pins[15].gpio.pinmap = 22;
b->pins[15].gpio.mux_total = 0;
strncpy(b->pins[16].name, "GPIO23", MRAA_PIN_NAME_SIZE);
b->pins[16].capabilites = (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 0 };
b->pins[16].gpio.pinmap = 23;
b->pins[16].gpio.mux_total = 0;
strncpy(b->pins[17].name, "3V3", MRAA_PIN_NAME_SIZE);
b->pins[17].capabilites = (mraa_pincapabilities_t){ 1, 0, 0, 0, 0, 0, 0, 0 };
strncpy(b->pins[18].name, "GPIO24", MRAA_PIN_NAME_SIZE);
b->pins[18].capabilites = (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 0 };
b->pins[18].gpio.pinmap = 24;
b->pins[18].gpio.mux_total = 0;
strncpy(b->pins[19].name, "SPI_MOSI", MRAA_PIN_NAME_SIZE);
b->pins[19].capabilites = (mraa_pincapabilities_t){ 1, 1, 0, 0, 1, 0, 0, 0 };
b->pins[19].gpio.pinmap = 10;
b->pins[19].gpio.mux_total = 0;
b->pins[19].spi.pinmap = 0;
b->pins[19].spi.mux_total = 0;
strncpy(b->pins[20].name, "GND", MRAA_PIN_NAME_SIZE);
b->pins[20].capabilites = (mraa_pincapabilities_t){ 1, 0, 0, 0, 0, 0, 0, 0 };
strncpy(b->pins[21].name, "SPI_MISO", MRAA_PIN_NAME_SIZE);
b->pins[21].capabilites = (mraa_pincapabilities_t){ 1, 1, 0, 0, 1, 0, 0, 0 };
b->pins[21].gpio.pinmap = 9;
b->pins[21].gpio.mux_total = 0;
b->pins[21].spi.pinmap = 0;
b->pins[21].spi.mux_total = 0;
strncpy(b->pins[22].name, "GPIO25", MRAA_PIN_NAME_SIZE);
b->pins[22].capabilites = (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 0 };
b->pins[22].gpio.pinmap = 25;
b->pins[22].gpio.mux_total = 0;
strncpy(b->pins[23].name, "SPI_CLK", MRAA_PIN_NAME_SIZE);
b->pins[23].capabilites = (mraa_pincapabilities_t){ 1, 1, 0, 0, 1, 0, 0, 0 };
b->pins[23].gpio.pinmap = 11;
b->pins[23].gpio.mux_total = 0;
b->pins[23].spi.pinmap = 0;
b->pins[23].spi.mux_total = 0;
strncpy(b->pins[24].name, "SPI_CS0", MRAA_PIN_NAME_SIZE);
b->pins[24].capabilites = (mraa_pincapabilities_t){ 1, 1, 0, 0, 1, 0, 0, 0 };
b->pins[24].gpio.pinmap = 8;
b->pins[24].gpio.mux_total = 0;
b->pins[24].spi.pinmap = 0;
b->pins[24].spi.mux_total = 0;
strncpy(b->pins[25].name, "GND", MRAA_PIN_NAME_SIZE);
b->pins[25].capabilites = (mraa_pincapabilities_t){ 1, 0, 0, 0, 0, 0, 0, 0 };
strncpy(b->pins[26].name, "SPI_CS1", MRAA_PIN_NAME_SIZE);
b->pins[26].capabilites = (mraa_pincapabilities_t){ 1, 1, 0, 0, 1, 0, 0, 0 };
b->pins[26].gpio.pinmap = 7;
b->pins[26].gpio.mux_total = 0;
b->pins[26].spi.pinmap = 0;
b->pins[26].spi.mux_total = 0;
if ((platform_detected == PLATFORM_RASPBERRY_PI_A_REV_2) ||
(platform_detected == PLATFORM_RASPBERRY_PI_B_REV_2)) {
strncpy(b->pins[27].name, "5V", MRAA_PIN_NAME_SIZE);
b->pins[27].capabilites = (mraa_pincapabilities_t){ 1, 0, 0, 0, 0, 0, 0, 0 };
strncpy(b->pins[28].name, "3V3", MRAA_PIN_NAME_SIZE);
b->pins[28].capabilites = (mraa_pincapabilities_t){ 1, 0, 0, 0, 0, 0, 0, 0 };
strncpy(b->pins[29].name, "GPIO8", MRAA_PIN_NAME_SIZE);
b->pins[29].capabilites = (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 0 };
b->pins[29].gpio.pinmap = 8;
b->pins[29].gpio.mux_total = 0;
strncpy(b->pins[30].name, "GPIO9", MRAA_PIN_NAME_SIZE);
b->pins[30].capabilites = (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 0 };
b->pins[30].gpio.pinmap = 9;
b->pins[30].gpio.mux_total = 0;
strncpy(b->pins[31].name, "GPIO10", MRAA_PIN_NAME_SIZE);
b->pins[31].capabilites = (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 0 };
b->pins[31].gpio.pinmap = 10;
b->pins[31].gpio.mux_total = 0;
strncpy(b->pins[32].name, "GPIO11", MRAA_PIN_NAME_SIZE);
b->pins[32].gpio.pinmap = 11;
b->pins[32].gpio.mux_total = 0;
b->pins[32].capabilites = (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 0 };
strncpy(b->pins[33].name, "GND", MRAA_PIN_NAME_SIZE);
b->pins[33].capabilites = (mraa_pincapabilities_t){ 1, 0, 0, 0, 0, 0, 0, 0 };
strncpy(b->pins[34].name, "GND", MRAA_PIN_NAME_SIZE);
b->pins[34].capabilites = (mraa_pincapabilities_t){ 1, 0, 0, 0, 0, 0, 0, 0 };
}
// BUS DEFINITIONS
b->i2c_bus_count = 1;
b->def_i2c_bus = 0;
if (platform_detected == PLATFORM_RASPBERRY_PI_B_REV_1)
b->i2c_bus[0].bus_id = 0;
else
b->i2c_bus[0].bus_id = 1;
b->i2c_bus[0].sda = 3;
b->i2c_bus[0].scl = 5;
b->spi_bus_count = 1;
b->def_spi_bus = 0;
b->spi_bus[0].bus_id = 0;
b->spi_bus[0].slave_s = 0;
b->spi_bus[0].cs = 24;
b->spi_bus[0].mosi = 19;
b->spi_bus[0].miso = 21;
b->spi_bus[0].sclk = 23;
b->uart_dev_count = 1;
b->def_uart_dev = 0;
b->uart_dev[0].rx = 10;
b->uart_dev[0].tx = 8;
if ((platform_detected == PLATFORM_RASPBERRY_PI_A_PLUS_REV_1) ||
(platform_detected == PLATFORM_RASPBERRY_PI_B_PLUS_REV_1) ||
(platform_detected == PLATFORM_RASPBERRY_PI2_B_REV_1)) {
strncpy(b->pins[27].name, "ID_SD", MRAA_PIN_NAME_SIZE);
b->pins[27].capabilites = (mraa_pincapabilities_t){ 1, 0, 0, 0, 0, 0, 0, 0 };
strncpy(b->pins[28].name, "ID_SC", MRAA_PIN_NAME_SIZE);
b->pins[28].capabilites = (mraa_pincapabilities_t){ 1, 0, 0, 0, 0, 0, 0, 0 };
strncpy(b->pins[29].name, "GPIO05", MRAA_PIN_NAME_SIZE);
b->pins[29].capabilites = (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 0 };
b->pins[29].gpio.pinmap = 5;
b->pins[29].gpio.mux_total = 0;
strncpy(b->pins[30].name, "GND", MRAA_PIN_NAME_SIZE);
b->pins[30].capabilites = (mraa_pincapabilities_t){ 1, 0, 0, 0, 0, 0, 0, 0 };
strncpy(b->pins[31].name, "GPIO06", MRAA_PIN_NAME_SIZE);
b->pins[31].capabilites = (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 0 };
b->pins[31].gpio.pinmap = 6;
b->pins[31].gpio.mux_total = 0;
strncpy(b->pins[32].name, "GPIO12", MRAA_PIN_NAME_SIZE);
b->pins[32].capabilites = (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 0 };
b->pins[32].gpio.pinmap = 12;
b->pins[32].gpio.mux_total = 0;
strncpy(b->pins[33].name, "GPIO13", MRAA_PIN_NAME_SIZE);
b->pins[33].capabilites = (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 0 };
b->pins[33].gpio.pinmap = 13;
b->pins[33].gpio.mux_total = 0;
strncpy(b->pins[34].name, "GND", MRAA_PIN_NAME_SIZE);
b->pins[34].capabilites = (mraa_pincapabilities_t){ 1, 0, 0, 0, 0, 0, 0, 0 };
strncpy(b->pins[35].name, "GPIO19", MRAA_PIN_NAME_SIZE);
b->pins[35].capabilites = (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 0 };
b->pins[35].gpio.pinmap = 19;
b->pins[35].gpio.mux_total = 0;
strncpy(b->pins[36].name, "GPIO16", MRAA_PIN_NAME_SIZE);
b->pins[36].capabilites = (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 0 };
b->pins[36].gpio.pinmap = 16;
b->pins[36].gpio.mux_total = 0;
strncpy(b->pins[37].name, "GPIO26", MRAA_PIN_NAME_SIZE);
b->pins[37].capabilites = (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 0 };
b->pins[37].gpio.pinmap = 26;
b->pins[37].gpio.mux_total = 0;
strncpy(b->pins[38].name, "GPIO20", MRAA_PIN_NAME_SIZE);
b->pins[38].capabilites = (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 0 };
b->pins[38].gpio.pinmap = 20;
b->pins[38].gpio.mux_total = 0;
strncpy(b->pins[39].name, "GND", MRAA_PIN_NAME_SIZE);
b->pins[39].capabilites = (mraa_pincapabilities_t){ 1, 0, 0, 0, 0, 0, 0, 0 };
strncpy(b->pins[40].name, "GPIO21", MRAA_PIN_NAME_SIZE);
b->pins[40].capabilites = (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 0 };
b->pins[40].gpio.pinmap = 21;
b->pins[40].gpio.mux_total = 0;
}
b->gpio_count = 0;
int i;
for (i = 0; i < b->phy_pin_count; i++) {
if (b->pins[i].capabilites.gpio) {
b->gpio_count++;
}
}
return b;
}