#include <stdlib.h>
#include <sched.h>
#include <string.h>
+#include <pwd.h>
+#include <glob.h>
+
#include "mraa_internal.h"
-#include "intel_galileo_rev_d.h"
-#include "intel_galileo_rev_g.h"
-#include "intel_edison_fab_c.h"
-#include "intel_de3815.h"
#include "gpio.h"
#include "version.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
Py_InitializeEx(0);
PyEval_InitThreads();
#endif
- // detect a galileo gen2 board
- char *line = NULL;
- // let getline allocate memory for *line
- size_t len = 0;
- FILE *fh = fopen("/sys/devices/virtual/dmi/id/board_name", "r");
- if (fh != NULL) {
- if (getline(&line, &len, fh) != -1) {
- if (strncmp(line, "GalileoGen2", 10) == 0) {
- platform_type = MRAA_INTEL_GALILEO_GEN2;
- } else if (strncmp(line, "BODEGA BAY", 10) == 0) {
- platform_type = MRAA_INTEL_EDISON_FAB_C;
- } else if (strncmp(line, "SALT BAY", 7) == 0) {
- platform_type = MRAA_INTEL_EDISON_FAB_C;
- } else if (strncmp(line, "DE3815", 6) == 0) {
- platform_type = MRAA_INTEL_DE3815;
- } else {
- platform_type = MRAA_INTEL_GALILEO_GEN1;
- }
- free(line);
- }
- fclose(fh);
- }
-
advance_func = (mraa_adv_func_t*) malloc(sizeof(mraa_adv_func_t));
memset(advance_func, 0, sizeof(mraa_adv_func_t));
- switch(platform_type) {
- case MRAA_INTEL_GALILEO_GEN2:
- plat = mraa_intel_galileo_gen2();
- break;
- case MRAA_INTEL_GALILEO_GEN1:
- plat = mraa_intel_galileo_rev_d();
- break;
- case MRAA_INTEL_EDISON_FAB_C:
- plat = mraa_intel_edison_fab_c();
- break;
- case MRAA_INTEL_DE3815:
- plat = mraa_intel_de3815();
- break;
- default:
- plat = mraa_intel_galileo_rev_d();
- syslog(LOG_ERR, "Platform not found, initialising MRAA_INTEL_GALILEO_GEN1");
+#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_NOTICE, "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;
}
return sched_setscheduler(0, SCHED_RR, &sched_s);
}
-static mraa_result_t
+mraa_result_t
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)
- return MRAA_ERROR_INVALID_RESOURCE;
- }
- return MRAA_SUCCESS;
-}
-
-unsigned int
-mraa_setup_gpio(int pin)
-{
- if (plat == NULL)
- return MRAA_PLATFORM_NO_INIT;
-
- if (pin < 0 || pin > plat->phy_pin_count)
- return MRAA_NO_SUCH_IO;
-
- if(plat->pins[pin].capabilites.gpio != 1)
- return MRAA_NO_SUCH_IO;
-
- if (plat->pins[pin].gpio.mux_total > 0)
- if (mraa_setup_mux_mapped(plat->pins[pin].gpio) != MRAA_SUCCESS)
- return MRAA_NO_SUCH_IO;
- return plat->pins[pin].gpio.pinmap;
-}
-
-unsigned int
-mraa_setup_aio(int aio)
-{
- if (plat == NULL)
- return MRAA_PLATFORM_NO_INIT;
-
- if (aio < 0 || aio > plat->aio_count)
- return MRAA_NO_SUCH_IO;
-
- int pin = aio + plat->gpio_count;
-
- if (plat->pins[pin].capabilites.aio != 1)
- return MRAA_NO_SUCH_IO;
-
- if (plat->pins[pin].aio.mux_total > 0)
- if (mraa_setup_mux_mapped(plat->pins[pin].aio) != MRAA_SUCCESS)
- return MRAA_NO_SUCH_IO;
- return plat->pins[pin].aio.pinmap;
-}
-
-unsigned int
-mraa_setup_i2c(int* bus)
-{
- if (plat == NULL)
- return MRAA_PLATFORM_NO_INIT;
-
- if (plat->i2c_bus_count == 0) {
- syslog(LOG_ERR, "No i2c buses defined in platform");
- return MRAA_NO_SUCH_IO;
- }
- if (*bus >= plat->i2c_bus_count) {
- syslog(LOG_ERR, "Above i2c bus count");
- return MRAA_NO_SUCH_IO;
- }
-
- if (plat->i2c_bus[*bus].bus_id == -1) {
- syslog(LOG_ERR, "Invalid i2c bus, moving to default i2c bus");
- *bus = plat->def_i2c_bus;
- }
-
- int pos = plat->i2c_bus[*bus].sda;
- if (plat->pins[pos].i2c.mux_total > 0)
- if (mraa_setup_mux_mapped(plat->pins[pos].i2c) != MRAA_SUCCESS)
- return MRAA_IO_SETUP_FAILURE;
-
- pos = plat->i2c_bus[*bus].scl;
- if (plat->pins[pos].i2c.mux_total > 0)
- if (mraa_setup_mux_mapped(plat->pins[pos].i2c) != MRAA_SUCCESS)
- return MRAA_IO_SETUP_FAILURE;
-
- return plat->i2c_bus[*bus].bus_id;
-}
-
-mraa_spi_bus_t*
-mraa_setup_spi(int bus)
-{
- if (plat == NULL)
- return NULL;
+ mraa_gpio_owner(mux_i, 0);
- if (plat->spi_bus_count >! 0) {
- syslog(LOG_ERR, "No spi buses defined in platform");
- return NULL;
- }
- if (plat->spi_bus_count == 1) {
- bus = plat->def_spi_bus;
- }
- if (bus >= plat->spi_bus_count) {
- syslog(LOG_ERR, "Above spi bus count");
- return NULL;
- }
-
- int pos = plat->spi_bus[bus].sclk;
- if (plat->pins[pos].spi.mux_total > 0)
- if (mraa_setup_mux_mapped(plat->pins[pos].spi) != MRAA_SUCCESS)
- return NULL;
-
- pos = plat->spi_bus[bus].mosi;
- if (plat->pins[pos].spi.mux_total > 0)
- if (mraa_setup_mux_mapped(plat->pins[pos].spi) != MRAA_SUCCESS)
- return NULL;
-
- pos = plat->spi_bus[bus].miso;
- if (plat->pins[pos].spi.mux_total > 0)
- if (mraa_setup_mux_mapped(plat->pins[pos].spi) != MRAA_SUCCESS)
- return NULL;
-
- pos = plat->spi_bus[bus].cs;
- if (plat->pins[pos].spi.mux_total > 0)
- if (mraa_setup_mux_mapped(plat->pins[pos].spi) != MRAA_SUCCESS)
- return NULL;
-
- mraa_spi_bus_t *spi = &(plat->spi_bus[bus]);
- return spi;
-}
-
-mraa_pin_t*
-mraa_setup_pwm(int pin)
-{
- if (plat == NULL)
- return NULL;
-
- if (plat->pins[pin].capabilites.pwm != 1)
- return NULL;
-
- if (plat->pins[pin].capabilites.gpio == 1) {
- mraa_gpio_context mux_i;
- mux_i = mraa_gpio_init_raw(plat->pins[pin].gpio.pinmap);
- if (mux_i == NULL)
- return NULL;
- if (mraa_gpio_dir(mux_i, MRAA_GPIO_OUT) != MRAA_SUCCESS)
- return NULL;
- // Current REV D quirk. //TODO GEN 2
- if (mraa_gpio_write(mux_i, 1) != MRAA_SUCCESS)
- return NULL;
- if (mraa_gpio_close(mux_i) != MRAA_SUCCESS)
- return NULL;
+ 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);
}
- if (plat->pins[pin].pwm.mux_total > 0)
- if (mraa_setup_mux_mapped(plat->pins[pin].pwm) != MRAA_SUCCESS)
- return NULL;
-
- mraa_pin_t *ret;
- ret = (mraa_pin_t*) malloc(sizeof(mraa_pin_t));
- ret->pinmap = plat->pins[pin].pwm.pinmap;
- ret->parent_id = plat->pins[pin].pwm.parent_id;
- return ret;
+ return MRAA_SUCCESS;
}
void
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_mmap_pin_t*
-mraa_setup_mmap_gpio(int pin)
-{
- if (plat == NULL)
- return NULL;
-
- if (plat->pins[pin].capabilites.fast_gpio != 1)
- return NULL;
-
- if (plat->pins[pin].mmap.gpio.mux_total > 0)
- if (mraa_setup_mux_mapped(plat->pins[pin].mmap.gpio) != MRAA_SUCCESS)
- return NULL;
-
- if (mraa_setup_mux_mapped(plat->pins[pin].mmap.gpio) != MRAA_SUCCESS)
- return NULL;
- mraa_mmap_pin_t *ret = &(plat->pins[pin].mmap);
- return ret;
-}
-
-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 == NULL) {
+ return NULL;
+ }
+ return (char*) plat->platform_name;
+}
- if (plat->uart_dev_count == 0)
- return MRAA_ERROR_FEATURE_NOT_SUPPORTED;
+unsigned int
+mraa_get_pin_count()
+{
+ if (plat == NULL) {
+ return 0;
+ }
+ return plat->phy_pin_count;
+}
- if (plat->uart_dev_count <= index)
- return MRAA_ERROR_NO_RESOURCES;
+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;
+}
- 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;
+char*
+mraa_get_pin_name(int pin)
+{
+ if (plat == NULL) {
+ return NULL;
}
+ if (pin > (plat->phy_pin_count - 1) || pin < 0)
+ return NULL;
+ return (char*) plat->pins[pin].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;
- }
+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;
+}
- return MRAA_SUCCESS;
+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