void
print_version()
{
fprintf(stdout, "Version %s on %s", mraa_get_version(), mraa_get_platform_name());
if (plat != NULL && plat->sub_platform != NULL)
fprintf(stdout, " with %s", plat->sub_platform->platform_name);
fprintf(stdout, "\n");
}
int main(int argc, char** argv)
{
const char* board_name = mraa_get_platform_name();
int i2c_bus, i, i2c_adapter;
fprintf(stdout, "hello mraa\n Version: %s\n Running on %s\n",
mraa_get_version(), board_name);
mraa_deinit();
return MRAA_SUCCESS;
}
int
main(int argc, char** argv)
{
mraa_platform_t platform = mraa_get_platform_type();
mraa_gpio_context gpio, gpio_in = NULL;
const char* board_name = mraa_get_platform_name();
int ledstate = 0;
switch (platform) {
case MRAA_INTEL_GALILEO_GEN1:
gpio = mraa_gpio_init_raw(3);
break;
case MRAA_INTEL_MINNOWBOARD_MAX:
// there is no onboard LED that we can flash on the minnowboard max
// but on the calamari lure pin 21 is an LED. If you don't have the
// lure put an LED on pin 21
gpio = mraa_gpio_init(21);
break;
case MRAA_INTEL_JOULE_EXPANSION:
gpio = mraa_gpio_init(101);
break;
default:
gpio = mraa_gpio_init(13);
}
fprintf(stdout, "Welcome to libmraa\n Version: %s\n Running on %s\n", mraa_get_version(), board_name);
if (gpio == NULL) {
fprintf(stdout, "Could not initilaize gpio\n");
return 1;
}
// on platforms with physical button use gpio_in
if (platform == MRAA_INTEL_MINNOWBOARD_MAX) {
gpio_in = mraa_gpio_init(14);
if (gpio_in != NULL) {
mraa_gpio_dir(gpio_in, MRAA_GPIO_IN);
// S1 on minnowboardmax's calamari lure maps to pin 14, SW1 != S1
fprintf(stdout, "Press and hold S1 to stop, Press SW1 to shutdown!\n");
}
}
mraa_gpio_dir(gpio, MRAA_GPIO_OUT);
for (;;) {
if (gpio_in != NULL && mraa_gpio_read(gpio_in) == 0) {
return 0;
}
ledstate = !ledstate;
mraa_gpio_write(gpio, !ledstate);
sleep(1);
}
return 0;
}
static char *get_boardtype() {
#ifdef DEVICEINTEL
const char* board = mraa_get_platform_name();
if (board == NULL)
{
return "edison";
}
if (strncmp (board, "Intel Galileo ", 14)==0)
{
return "arduinogalileo";
}
else
if (strncmp (board, "Intel Edison", 12)==0)
{
return "edison";
}
else
if (strncmp (board, "MinnowBoard MAX", 16)==0)
{
return "minnowboardmax";
}
else
{
return NULL;
}
#else
char *return_value = NULL;
/* Open boardtype */
int boardtype_fd = open(BOARDTYPE_PATH, O_RDONLY);
wsyserr2(boardtype_fd == -1, goto _finish, "Could not open %s", BOARDTYPE_PATH);
/* Allocate space for return value */
char *boardtype = calloc(64, sizeof(char));
wsyserr2(boardtype == NULL, goto _finish, "Could not calloc space for boardtype");
/* Read the content of the boartype file */
int read_rc = read(boardtype_fd, boardtype, 63);
wsyserr2(read_rc == -1, goto _finish, "Could not read from %s", BOARDTYPE_PATH);
werr2(read_rc == 63, goto _finish, "Board name too long in %s", BOARDTYPE_PATH);
/* Success */
return_value = boardtype;
_finish: ;
if (boardtype_fd != -1) {
int close_rc = close(boardtype_fd);
wsyserr2(close_rc == -1, return_value = NULL,
"Could not close %s", BOARDTYPE_PATH);
}
return return_value;
#endif
}
void startMRAA( void ) {
// printf( "\n I/O is enabled\n" );
mraa_init();
printf( " MRAA library Version: %s\n", mraa_get_version() );
mraa_platform_t platformType = mraa_get_platform_type();
printf( " Platform type: %d\n", platformType );
char *platformName = mraa_get_platform_name();
printf( " Platform name: %s\n", platformName );
}
int
main(int argc, char **argv)
{
mraa_platform_t platform = mraa_get_platform_type();
mraa_gpio_context gpio, gpio_in = NULL;
char* board_name = mraa_get_platform_name();
int ledstate = 0;
switch (platform) {
case MRAA_INTEL_GALILEO_GEN1:
gpio = mraa_gpio_init_raw(3);
break;
case MRAA_INTEL_MINNOWBOARD_MAX:
gpio = mraa_gpio_init(21);
break;
default:
gpio = mraa_gpio_init(13);
}
fprintf(stdout, "Welcome to libmraa\n Version: %s\n Running on %s\n",
mraa_get_version(), board_name);
if (gpio == NULL) {
fprintf(stdout, "Could not initilaize gpio\n");
return 1;
}
// on platforms with physical button use gpio_in
if (platform == MRAA_INTEL_MINNOWBOARD_MAX) {
gpio_in = mraa_gpio_init(14);
if (gpio_in != NULL) {
mraa_gpio_dir(gpio_in, MRAA_GPIO_IN);
fprintf(stdout, "Press and hold S1 to stop\n");
}
}
mraa_gpio_dir(gpio, MRAA_GPIO_OUT);
for (;;) {
if (gpio_in != NULL && mraa_gpio_read(gpio_in) == 0) {
return 0;
}
ledstate = !ledstate;
mraa_gpio_write(gpio, !ledstate);
sleep(1);
}
return 0;
}
mraa_init()
{
if (plat != NULL) {
return MRAA_ERROR_PLATFORM_ALREADY_INITIALISED;
}
uid_t proc_euid = geteuid();
struct passwd* proc_user = getpwuid(proc_euid);
#ifdef DEBUG
setlogmask(LOG_UPTO(LOG_DEBUG));
#else
setlogmask(LOG_UPTO(LOG_NOTICE));
#endif
openlog("libmraa", LOG_CONS | LOG_PID | LOG_NDELAY, LOG_LOCAL1);
syslog(LOG_NOTICE, "libmraa version %s initialised by user '%s' with EUID %d",
mraa_get_version(), (proc_user != NULL) ? proc_user->pw_name : "<unknown>", proc_euid);
#ifdef SWIGPYTHON
// Initialise python threads, this allows use to grab the GIL when we are
// required to do so
Py_InitializeEx(0);
PyEval_InitThreads();
#endif
advance_func = (mraa_adv_func_t*) malloc(sizeof(mraa_adv_func_t));
memset(advance_func, 0, sizeof(mraa_adv_func_t));
#if defined(X86PLAT)
// Use runtime x86 platform detection
platform_type = mraa_x86_platform();
#elif defined(ARMPLAT)
// Use runtime ARM platform detection
platform_type = mraa_arm_platform();
#else
#error mraa_ARCH NOTHING
#endif
if (plat == NULL) {
printf("mraa: FATAL error, failed to initialise platform\n");
return MRAA_ERROR_PLATFORM_NOT_INITIALISED;
}
syslog(LOG_INFO, "libmraa initialised for platform '%s' of type %d", mraa_get_platform_name(), platform_type);
return MRAA_SUCCESS;
}
/**
* Whilst the actual mraa init function is now called imraa_init, it's only
* callable externally if IMRAA is enabled
*/
mraa_result_t
imraa_init()
{
if (plat != NULL) {
return MRAA_SUCCESS;
}
uid_t proc_euid = geteuid();
struct passwd* proc_user = getpwuid(proc_euid);
#ifdef DEBUG
setlogmask(LOG_UPTO(LOG_DEBUG));
#else
setlogmask(LOG_UPTO(LOG_NOTICE));
#endif
openlog("libmraa", LOG_CONS | LOG_PID | LOG_NDELAY, LOG_LOCAL1);
syslog(LOG_NOTICE, "libmraa version %s initialised by user '%s' with EUID %d",
mraa_get_version(), (proc_user != NULL) ? proc_user->pw_name : "<unknown>", proc_euid);
mraa_platform_t platform_type;
#if defined(X86PLAT)
// Use runtime x86 platform detection
platform_type = mraa_x86_platform();
#elif defined(ARMPLAT)
// Use runtime ARM platform detection
platform_type = mraa_arm_platform();
#elif defined(MOCKPLAT)
// Use mock platform
platform_type = mraa_mock_platform();
#else
#error mraa_ARCH NOTHING
#endif
if (plat != NULL) {
plat->platform_type = platform_type;
} else {
platform_name = NULL;
}
// Create null base platform if one doesn't already exist
if (plat == NULL) {
plat = (mraa_board_t*) calloc(1, sizeof(mraa_board_t));
if (plat != NULL) {
plat->platform_type = MRAA_NULL_PLATFORM;
plat->platform_name = "Unknown platform";
}
}
#if defined(USBPLAT)
// Now detect sub platform, note this is not an else since we could be in
// an error case and fall through to MRAA_ERROR_PLATFORM_NOT_INITIALISED
if (plat != NULL) {
mraa_platform_t usb_platform_type = mraa_usb_platform_extender(plat);
// if we have no known platform just replace usb platform with platform
if (plat->platform_type == MRAA_UNKNOWN_PLATFORM && usb_platform_type != MRAA_UNKNOWN_PLATFORM) {
plat->platform_type = usb_platform_type;
}
}
if (plat == NULL) {
printf("mraa: FATAL error, failed to initialise platform\n");
return MRAA_ERROR_PLATFORM_NOT_INITIALISED;
}
#endif
#if defined(IMRAA)
const char* subplatform_lockfile = "/tmp/imraa.lock";
mraa_add_from_lockfile(subplatform_lockfile);
#endif
// Look for IIO devices
mraa_iio_detect();
if (plat != NULL) {
int length = strlen(plat->platform_name) + 1;
if (mraa_has_sub_platform()) {
// Account for ' + ' chars
length += strlen(plat->sub_platform->platform_name) + 3;
}
platform_name = calloc(length, sizeof(char));
if (mraa_has_sub_platform()) {
snprintf(platform_name, length, "%s + %s", plat->platform_name, plat->sub_platform->platform_name);
} else {
strncpy(platform_name, plat->platform_name, length);
}
}
lang_func = (mraa_lang_func_t*) calloc(1, sizeof(mraa_lang_func_t));
if (lang_func == NULL) {
return MRAA_ERROR_NO_RESOURCES;
}
syslog(LOG_NOTICE, "libmraa initialised for platform '%s' of type %d", mraa_get_platform_name(), mraa_get_platform_type());
return MRAA_SUCCESS;
}
int main(int argc, char** argv)
{
mraa_platform_t platform; /* Type of platform we are on */
mraa_gpio_context gpio_led = NULL; /* LED GPIO descriptor */
mraa_gpio_context gpio_button = NULL; /* BUTTON GPIO descriptor */
mraa_aio_context adc_a0 = NULL; /* Analog-Digital descriptor */
uint32_t adc_val; /* ADC value */
float delay; /* Delay between blinks */
int ledstate = 0; /* LED state, 0=off, 1=on */
/*
* Print banner.
*/
platform = mraa_get_platform_type();
fprintf(stdout, "MRAA C Demonstration\n");
fprintf(stdout, "LIBMRAA Version: %s\n", mraa_get_version());
fprintf(stdout, "Board: %s\n", mraa_get_platform_name());
/*
* Check that we are running on the correct board
*/
platform = mraa_get_platform_type();
if (platform != MRAA_INTEL_GALILEO_GEN2)
{
fprintf(stderr, "ERROR: This program is for a Intel Galileo Gen 2 Board\n");
exit (-1);
}
/*
* Initialize the LED gpio pin and set it as an output
*/
gpio_led = mraa_gpio_init(LED);
if (gpio_led == NULL)
{
fprintf(stderr, "Could not initialize LED gpio\n");
exit (-1);
}
mraa_gpio_dir(gpio_led, MRAA_GPIO_OUT);
/*
* Initialize the Button gpio pin and set it as an input
*/
gpio_button = mraa_gpio_init(BUTTON);
if (gpio_button == NULL)
{
fprintf(stderr, "Could not initialize BUTTON gpio\n");
}
mraa_gpio_dir(gpio_button, MRAA_GPIO_IN);
/*
* Initialize the Analog-Digital converter channel 0
*/
adc_a0 = mraa_aio_init(0);
if (adc_a0 == NULL)
{
fprintf(stderr, "Failed to initalize ADC channel A0\n");
exit (-1);
}
printf("Vary the rate of blink by turning the poteniometer on A0\n");
printf("Exit the program by pressing the button on D%d\n\n", BUTTON);
/*
* Run the loop until the BUTTON is held down.
* Each time through the loop, read the potentiometer on A0 and
* adjust the blink rate.
*/
while (1)
{
if (mraa_gpio_read(gpio_button) == 1)
break;
if (adc_a0 != NULL)
{
adc_val = mraa_aio_read(adc_a0);
/* fprintf(stdout, "ADC A0 = %d\n", adc_val); */
if (adc_val != 0)
delay = 1000000 * ((float)adc_val/1024);
else
delay = 1000000 * (1/1024);
}
ledstate = !ledstate;
mraa_gpio_write(gpio_led, ledstate);
usleep((long)delay);
}
/*
* Clean up and exit
*/
(void)mraa_gpio_close(gpio_led);
(void)mraa_gpio_close(gpio_button);
(void)mraa_aio_close(adc_a0);
exit(0);
}
int main(UNUSED(int argc), UNUSED(char** argv))
{
uint32_t tso = rdtsc32();
stdio_mode(STDIO_MODE_CANON);
// initialize mraa and software SPI
mraa_init();
printf("MRAA paltform %s, version %s\n", mraa_get_platform_name(), mraa_get_version());
mraa_spi_sw_context spi = sw_spi_init(MRAA_SCK, MRAA_MOSI, MRAA_MISO);
// initialize RFM12BS
rfm12_t rfm;
memset(&rfm, 0, sizeof(rfm));
rfm12_init_spi(&rfm, spi, MRAA_CS1, MRAA_GP047);
rfm12_init(&rfm, 0xD4, RFM12_BAND_868, 868.0, RFM12_BPS_9600);
rfm12_set_mode(&rfm, RFM_MODE_RX);
printf("started up in %u msec\n", millis(tso));
// default application configuration
cfg.flags |= APPF_ECHO_DAN;
cfg.rfm = &rfm;
// initialize command line interface
console_io_t cli;
memset(&cli, 0, sizeof(cli));
cli.prompt = '>';
cli.data = &cfg;
stdio_init(&cli, stdio_cmd_handler);
stdio_mode(STDIO_MODE_RAW);
dnode_t node;
while(!cli.stop) {
cli.interact(&cli, cli_cmd);
if (rfm12_receive_data(&rfm, &node, sizeof(node), cfg.flags & RFM_RX_DEBUG) == sizeof(node)) {
rfm12_set_mode(&rfm, RFM_MODE_RX);
if (node.nid == NODE_TSYNC) {
tso = rdtsc32();
ts_unpack(&node);
cfg.rtc_hour = node.hour;
cfg.rtc_min = node.min;
cfg.rtc_sec = node.sec;
}
if (cfg.flags & APPF_ECHO_DAN)
print_node(&cli, &node);
}
if (millis(tso) >= 1000) {
tso = rdtsc32();
if (++cfg.rtc_sec == 60) {
cfg.rtc_sec = 0;
if (++cfg.rtc_min == 60) {
cfg.rtc_min = 0;
if (++cfg.rtc_hour == 24)
cfg.rtc_hour = 0;
}
}
}
usleep(1); // be nice
}
stdio_mode(STDIO_MODE_CANON);
rfm12_close_spi(&rfm);
sw_spi_close(spi);
mraa_deinit();
}
/**
* Return Platform Name. "Unknown" if no platform inited.
*
* @return platform name
*/
inline std::string getPlatformName()
{
std::string ret_val(mraa_get_platform_name());
return ret_val;
}