2 * Author: Brendan Le Foll <brendan.le.foll@intel.com>
3 * Author: Thomas Ingleby <thomas.c.ingleby@intel.com>
4 * Copyright (c) 2014 Intel Corporation.
6 * Permission is hereby granted, free of charge, to any person obtaining
7 * a copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sublicense, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
14 * The above copyright notice and this permission notice shall be
15 * included in all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
20 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
21 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
22 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
23 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
34 #include "mraa_internal.h"
38 mraa_board_t* plat = NULL;
39 static mraa_platform_t platform_type = MRAA_UNKNOWN_PLATFORM;
40 mraa_adv_func_t* advance_func;
49 mraa_set_log_level(int level)
51 if (level <= 7 && level >= 0) {
52 setlogmask(LOG_UPTO(level));
55 return MRAA_ERROR_INVALID_PARAMETER;
58 mraa_result_t __attribute__((constructor))
62 return MRAA_ERROR_PLATFORM_ALREADY_INITIALISED;
65 uid_t proc_euid = geteuid();
66 struct passwd *proc_user = getpwuid(proc_euid);
69 setlogmask(LOG_UPTO(LOG_DEBUG));
71 setlogmask(LOG_UPTO(LOG_NOTICE));
74 openlog("libmraa", LOG_CONS | LOG_PID | LOG_NDELAY, LOG_LOCAL1);
76 "libmraa version %s initialised by user '%s' with EUID %d",
78 (proc_user != NULL) ? proc_user->pw_name : "<unknown>",
82 // Initialise python threads, this allows use to grab the GIL when we are
87 advance_func = (mraa_adv_func_t*) malloc(sizeof(mraa_adv_func_t));
88 memset(advance_func, 0, sizeof(mraa_adv_func_t));
91 // Use runtime x86 platform detection
92 platform_type = mraa_x86_platform();
94 // Use runtime ARM platform detection
95 platform_type = mraa_arm_platform();
97 #error mraa_ARCH NOTHING
101 printf("mraa: FATAL error, failed to initialise platform\n");
102 return MRAA_ERROR_PLATFORM_NOT_INITIALISED;
106 "libmraa initialised for platform '%s' of type %d",
107 mraa_get_platform_name(),
116 if (plat->pins != NULL) {
125 mraa_set_priority(const unsigned int priority)
127 struct sched_param sched_s;
129 memset(&sched_s, 0, sizeof(struct sched_param));
130 if (priority > sched_get_priority_max(SCHED_RR)) {
131 sched_s.sched_priority = sched_get_priority_max(SCHED_RR);
134 sched_s.sched_priority = priority;
137 return sched_setscheduler(0, SCHED_RR, &sched_s);
141 mraa_setup_mux_mapped(mraa_pin_t meta)
145 for (mi = 0; mi < meta.mux_total; mi++) {
146 mraa_gpio_context mux_i;
147 mux_i = mraa_gpio_init_raw(meta.mux[mi].pin);
149 return MRAA_ERROR_INVALID_HANDLE;
151 // this function will sometimes fail, however this is not critical as
152 // long as the write succeeds - Test case galileo gen2 pin2
153 mraa_gpio_dir(mux_i, MRAA_GPIO_OUT);
154 mraa_gpio_owner(mux_i, 0);
156 if (mraa_gpio_write(mux_i, meta.mux[mi].value) != MRAA_SUCCESS) {
157 mraa_gpio_close(mux_i);
158 return MRAA_ERROR_INVALID_RESOURCE;
160 mraa_gpio_close(mux_i);
167 mraa_result_print(mraa_result_t result)
171 fprintf(stdout, "MRAA: SUCCESS\n");
173 case MRAA_ERROR_FEATURE_NOT_IMPLEMENTED:
174 fprintf(stdout, "MRAA: Feature not implemented.\n");
176 case MRAA_ERROR_FEATURE_NOT_SUPPORTED:
177 fprintf(stdout, "MRAA: Feature not supported by Hardware.\n");
179 case MRAA_ERROR_INVALID_VERBOSITY_LEVEL:
180 fprintf(stdout, "MRAA: Invalid verbosity level.\n");
182 case MRAA_ERROR_INVALID_PARAMETER:
183 fprintf(stdout, "MRAA: Invalid parameter.\n");
185 case MRAA_ERROR_INVALID_HANDLE:
186 fprintf(stdout, "MRAA: Invalid Handle.\n");
188 case MRAA_ERROR_NO_RESOURCES:
189 fprintf(stdout, "MRAA: No resources.\n");
191 case MRAA_ERROR_INVALID_RESOURCE:
192 fprintf(stdout, "MRAA: Invalid resource.\n");
194 case MRAA_ERROR_INVALID_QUEUE_TYPE:
195 fprintf(stdout, "MRAA: Invalid Queue Type.\n");
197 case MRAA_ERROR_NO_DATA_AVAILABLE:
198 fprintf(stdout, "MRAA: No Data available.\n");
200 case MRAA_ERROR_INVALID_PLATFORM:
201 fprintf(stdout, "MRAA: Platform not recognised.\n");
203 case MRAA_ERROR_PLATFORM_NOT_INITIALISED:
204 fprintf(stdout, "MRAA: Platform not initialised.\n");
206 case MRAA_ERROR_PLATFORM_ALREADY_INITIALISED:
207 fprintf(stdout, "MRAA: Platform already initialised.\n");
209 case MRAA_ERROR_UNSPECIFIED:
210 fprintf(stdout, "MRAA: Unspecified Error.\n");
213 fprintf(stdout, "MRAA: Unrecognised error.\n");
219 mraa_pin_mode_test(int pin, mraa_pinmodes_t mode)
226 if (pin > (plat->phy_pin_count -1) || pin < 0)
231 if (plat->pins[pin].capabilites.valid == 1)
235 if (plat->pins[pin].capabilites.gpio ==1)
239 if (plat->pins[pin].capabilites.pwm ==1)
242 case MRAA_PIN_FAST_GPIO:
243 if (plat->pins[pin].capabilites.fast_gpio ==1)
247 if (plat->pins[pin].capabilites.spi ==1)
251 if (plat->pins[pin].capabilites.i2c ==1)
255 if (plat->pins[pin].capabilites.aio ==1)
259 if (plat->pins[pin].capabilites.uart == 1)
263 syslog(LOG_NOTICE, "requested pinmode invalid");
269 mraa_platform_t mraa_get_platform_type()
271 return platform_type;
280 if (plat->aio_count == 0)
283 return plat->adc_raw;
287 mraa_adc_supported_bits()
292 if (plat->aio_count == 0)
295 return plat->adc_supported;
299 mraa_get_platform_name()
304 return (char*) plat->platform_name;
313 return plat->phy_pin_count;
317 mraa_file_exist(char *filename) {
319 results.gl_pathc = 0;
320 glob(filename, 0, NULL, &results);
321 int file_found = results.gl_pathc == 1;
327 mraa_file_unglob(char *filename) {
330 results.gl_pathc = 0;
331 glob(filename, 0, NULL, &results);
332 if (results.gl_pathc == 1)
333 res = strdup(results.gl_pathv[0]);
339 mraa_link_targets(char *filename,char *targetname) {
345 buffer = (char *) realloc(buffer,size);
348 nchars = readlink(filename,buffer,size);
353 if (nchars >= size) {
358 if (strstr(buffer,targetname)) {