#include <stdlib.h>
#include <sched.h>
#include <string.h>
+#include <pwd.h>
+#include <glob.h>
-#define DEBUG
#include "mraa_internal.h"
#include "gpio.h"
static mraa_platform_t platform_type = MRAA_UNKNOWN_PLATFORM;
mraa_adv_func_t* advance_func;
-const char *
+const char*
mraa_get_version()
{
return gVERSION;
return MRAA_ERROR_INVALID_PARAMETER;
}
+#if (defined SWIGPYTHON) || (defined SWIG)
+mraa_result_t
+#else
mraa_result_t __attribute__((constructor))
+#endif
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
#endif
openlog("libmraa", LOG_CONS | LOG_PID | LOG_NDELAY, LOG_LOCAL1);
- syslog(LOG_DEBUG, "libmraa initialised by user %d", getuid());
+ 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);
- if (plat != NULL) {
- return MRAA_ERROR_PLATFORM_ALREADY_INITIALISED;
- }
#ifdef SWIGPYTHON
// Initialise python threads, this allows use to grab the GIL when we are
// required to do so
#ifdef X86PLAT
// Use runtime x86 platform detection
platform_type = mraa_x86_platform();
+#elif 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 %d", platform_type);
+
+ syslog(LOG_INFO, "libmraa initialised for platform '%s' of type %d", mraa_get_platform_name(), platform_type);
return MRAA_SUCCESS;
}
void
mraa_deinit()
{
- free(plat->pins);
- free(plat);
+ if (plat != NULL) {
+ if (plat->pins != NULL) {
+ free(plat->pins);
+ }
+ free(plat);
+ }
closelog();
}
memset(&sched_s, 0, sizeof(struct sched_param));
if (priority > sched_get_priority_max(SCHED_RR)) {
sched_s.sched_priority = sched_get_priority_max(SCHED_RR);
- }
- else {
+ } else {
sched_s.sched_priority = priority;
}
mraa_setup_mux_mapped(mraa_pin_t meta)
{
int mi;
+
for (mi = 0; mi < meta.mux_total; mi++) {
mraa_gpio_context mux_i;
mux_i = mraa_gpio_init_raw(meta.mux[mi].pin);
- if (mux_i == NULL)
+ if (mux_i == NULL) {
return MRAA_ERROR_INVALID_HANDLE;
+ }
+ // this function will sometimes fail, however this is not critical as
+ // long as the write succeeds - Test case galileo gen2 pin2
mraa_gpio_dir(mux_i, MRAA_GPIO_OUT);
- if (mraa_gpio_write(mux_i, meta.mux[mi].value) != MRAA_SUCCESS)
+ mraa_gpio_owner(mux_i, 0);
+
+ if (mraa_gpio_write(mux_i, meta.mux[mi].value) != MRAA_SUCCESS) {
+ mraa_gpio_close(mux_i);
return MRAA_ERROR_INVALID_RESOURCE;
+ }
+ mraa_gpio_close(mux_i);
}
+
return MRAA_SUCCESS;
}
if (plat == NULL)
return 0;
}
- if (pin > plat->phy_pin_count || pin < 0)
+ if (pin > (plat->phy_pin_count - 1) || pin < 0)
return 0;
- switch(mode) {
+ switch (mode) {
case MRAA_PIN_VALID:
if (plat->pins[pin].capabilites.valid == 1)
return 1;
break;
case MRAA_PIN_GPIO:
- if (plat->pins[pin].capabilites.gpio ==1)
+ if (plat->pins[pin].capabilites.gpio == 1)
return 1;
break;
case MRAA_PIN_PWM:
- if (plat->pins[pin].capabilites.pwm ==1)
+ if (plat->pins[pin].capabilites.pwm == 1)
return 1;
break;
case MRAA_PIN_FAST_GPIO:
- if (plat->pins[pin].capabilites.fast_gpio ==1)
+ if (plat->pins[pin].capabilites.fast_gpio == 1)
return 1;
break;
case MRAA_PIN_SPI:
- if (plat->pins[pin].capabilites.spi ==1)
+ if (plat->pins[pin].capabilites.spi == 1)
return 1;
break;
case MRAA_PIN_I2C:
- if (plat->pins[pin].capabilites.i2c ==1)
+ if (plat->pins[pin].capabilites.i2c == 1)
return 1;
break;
case MRAA_PIN_AIO:
- if (pin < plat->aio_count)
- pin = pin + plat->gpio_count;
- if (plat->pins[pin].capabilites.aio ==1)
+ if (plat->pins[pin].capabilites.aio == 1)
return 1;
break;
- default: break;
+ case MRAA_PIN_UART:
+ if (plat->pins[pin].capabilites.uart == 1)
+ return 1;
+ break;
+ default:
+ syslog(LOG_NOTICE, "requested pinmode invalid");
+ break;
}
return 0;
}
-mraa_platform_t mraa_get_platform_type()
+mraa_platform_t
+mraa_get_platform_type()
{
return platform_type;
}
return plat->adc_supported;
}
-mraa_result_t
-mraa_setup_uart(int index)
+char*
+mraa_get_platform_name()
{
- if (plat == NULL)
- return MRAA_ERROR_PLATFORM_NOT_INITIALISED;
-
- if (plat->uart_dev_count == 0)
- return MRAA_ERROR_FEATURE_NOT_SUPPORTED;
-
- if (plat->uart_dev_count <= index)
- return MRAA_ERROR_NO_RESOURCES;
-
- int pos = plat->uart_dev[index].rx;
- if (pos >= 0) {
- if (plat->pins[pos].uart.mux_total > 0)
- if (mraa_setup_mux_mapped(plat->pins[pos].uart) != MRAA_SUCCESS)
- return MRAA_ERROR_INVALID_RESOURCE;
+ if (plat == NULL) {
+ return NULL;
}
+ return (char*) plat->platform_name;
+}
- if (pos >= 0) {
- pos = plat->uart_dev[index].tx;
- if (plat->pins[pos].uart.mux_total > 0)
- if (mraa_setup_mux_mapped(plat->pins[pos].uart) != MRAA_SUCCESS)
- return MRAA_ERROR_INVALID_RESOURCE;
+unsigned int
+mraa_get_pin_count()
+{
+ if (plat == NULL) {
+ return 0;
}
+ return plat->phy_pin_count;
+}
- return MRAA_SUCCESS;
+mraa_boolean_t
+mraa_file_exist(char* filename)
+{
+ glob_t results;
+ results.gl_pathc = 0;
+ glob(filename, 0, NULL, &results);
+ int file_found = results.gl_pathc == 1;
+ globfree(&results);
+ return file_found;
}
char*
-mraa_get_platform_name()
+mraa_get_pin_name(int pin)
{
- if (plat == NULL)
- return "Unknown";
- return plat->platform_name;
+ if (plat == NULL) {
+ return NULL;
+ }
+ if (pin > (plat->phy_pin_count - 1) || pin < 0)
+ return NULL;
+ return (char*) plat->pins[pin].name;
+}
+
+char*
+mraa_file_unglob(char* filename)
+{
+ glob_t results;
+ char* res = NULL;
+ results.gl_pathc = 0;
+ glob(filename, 0, NULL, &results);
+ if (results.gl_pathc == 1)
+ res = strdup(results.gl_pathv[0]);
+ globfree(&results);
+ return res;
+}
+
+mraa_boolean_t
+mraa_link_targets(char* filename, char* targetname)
+{
+ int size = 100;
+ int nchars = 0;
+ char* buffer = NULL;
+ while (nchars == 0) {
+ buffer = (char*) realloc(buffer, size);
+ if (buffer == NULL)
+ return 0;
+ nchars = readlink(filename, buffer, size);
+ if (nchars < 0) {
+ free(buffer);
+ return 0;
+ }
+ if (nchars >= size) {
+ size *= 2;
+ nchars = 0;
+ }
+ }
+ if (strstr(buffer, targetname)) {
+ free(buffer);
+ return 1;
+ } else {
+ free(buffer);
+ return 0;
+ }
}
projects / contrib / mraa.git / blobdiff