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.
32 #include "mraa_internal.h"
36 mraa_board_t* plat = NULL;
37 static mraa_platform_t platform_type = MRAA_UNKNOWN_PLATFORM;
38 mraa_adv_func_t* advance_func;
47 mraa_set_log_level(int level)
49 if (level <= 7 && level >= 0) {
50 setlogmask(LOG_UPTO(level));
53 return MRAA_ERROR_INVALID_PARAMETER;
56 mraa_result_t __attribute__((constructor))
60 return MRAA_ERROR_PLATFORM_ALREADY_INITIALISED;
63 uid_t proc_euid = geteuid();
64 struct passwd *proc_user = getpwuid(proc_euid);
67 setlogmask(LOG_UPTO(LOG_DEBUG));
69 setlogmask(LOG_UPTO(LOG_NOTICE));
72 openlog("libmraa", LOG_CONS | LOG_PID | LOG_NDELAY, LOG_LOCAL1);
74 "libmraa initialised by user '%s' with EUID %d",
75 (proc_user != NULL) ? proc_user->pw_name : "<unknown>",
79 char *err_msg = "mraa: FATAL error, "
80 "libmraa program must be run as root (EUID 0), "
82 syslog(LOG_ERR, "%s", err_msg);
83 fprintf(stderr, "%s", err_msg);
84 return MRAA_ERROR_PLATFORM_NOT_INITIALISED;
88 // Initialise python threads, this allows use to grab the GIL when we are
93 advance_func = (mraa_adv_func_t*) malloc(sizeof(mraa_adv_func_t));
94 memset(advance_func, 0, sizeof(mraa_adv_func_t));
97 // Use runtime x86 platform detection
98 platform_type = mraa_x86_platform();
100 // Use runtime ARM platform detection
101 platform_type = mraa_arm_platform();
103 #error mraa_ARCH NOTHING
107 printf("mraa: FATAL error, failed to initialise platform\n");
108 return MRAA_ERROR_PLATFORM_NOT_INITIALISED;
112 "libmraa initialised for platform '%s' of type %d",
113 mraa_get_platform_name(),
122 if (plat->pins != NULL) {
131 mraa_set_priority(const unsigned int priority)
133 struct sched_param sched_s;
135 memset(&sched_s, 0, sizeof(struct sched_param));
136 if (priority > sched_get_priority_max(SCHED_RR)) {
137 sched_s.sched_priority = sched_get_priority_max(SCHED_RR);
140 sched_s.sched_priority = priority;
143 return sched_setscheduler(0, SCHED_RR, &sched_s);
147 mraa_setup_mux_mapped(mraa_pin_t meta)
151 for (mi = 0; mi < meta.mux_total; mi++) {
152 mraa_gpio_context mux_i;
153 mux_i = mraa_gpio_init_raw(meta.mux[mi].pin);
155 return MRAA_ERROR_INVALID_HANDLE;
157 // this function will sometimes fail, however this is not critical as
158 // long as the write succeeds - Test case galileo gen2 pin2
159 mraa_gpio_dir(mux_i, MRAA_GPIO_OUT);
161 if (mraa_gpio_write(mux_i, meta.mux[mi].value) != MRAA_SUCCESS) {
162 mraa_gpio_close(mux_i);
163 return MRAA_ERROR_INVALID_RESOURCE;
165 mraa_gpio_close(mux_i);
172 mraa_result_print(mraa_result_t result)
176 fprintf(stdout, "MRAA: SUCCESS\n");
178 case MRAA_ERROR_FEATURE_NOT_IMPLEMENTED:
179 fprintf(stdout, "MRAA: Feature not implemented.\n");
181 case MRAA_ERROR_FEATURE_NOT_SUPPORTED:
182 fprintf(stdout, "MRAA: Feature not supported by Hardware.\n");
184 case MRAA_ERROR_INVALID_VERBOSITY_LEVEL:
185 fprintf(stdout, "MRAA: Invalid verbosity level.\n");
187 case MRAA_ERROR_INVALID_PARAMETER:
188 fprintf(stdout, "MRAA: Invalid parameter.\n");
190 case MRAA_ERROR_INVALID_HANDLE:
191 fprintf(stdout, "MRAA: Invalid Handle.\n");
193 case MRAA_ERROR_NO_RESOURCES:
194 fprintf(stdout, "MRAA: No resources.\n");
196 case MRAA_ERROR_INVALID_RESOURCE:
197 fprintf(stdout, "MRAA: Invalid resource.\n");
199 case MRAA_ERROR_INVALID_QUEUE_TYPE:
200 fprintf(stdout, "MRAA: Invalid Queue Type.\n");
202 case MRAA_ERROR_NO_DATA_AVAILABLE:
203 fprintf(stdout, "MRAA: No Data available.\n");
205 case MRAA_ERROR_INVALID_PLATFORM:
206 fprintf(stdout, "MRAA: Platform not recognised.\n");
208 case MRAA_ERROR_PLATFORM_NOT_INITIALISED:
209 fprintf(stdout, "MRAA: Platform not initialised.\n");
211 case MRAA_ERROR_PLATFORM_ALREADY_INITIALISED:
212 fprintf(stdout, "MRAA: Platform already initialised.\n");
214 case MRAA_ERROR_UNSPECIFIED:
215 fprintf(stdout, "MRAA: Unspecified Error.\n");
218 fprintf(stdout, "MRAA: Unrecognised error.\n");
224 mraa_pin_mode_test(int pin, mraa_pinmodes_t mode)
231 if (pin > (plat->phy_pin_count -1) || pin < 0)
236 if (plat->pins[pin].capabilites.valid == 1)
240 if (plat->pins[pin].capabilites.gpio ==1)
244 if (plat->pins[pin].capabilites.pwm ==1)
247 case MRAA_PIN_FAST_GPIO:
248 if (plat->pins[pin].capabilites.fast_gpio ==1)
252 if (plat->pins[pin].capabilites.spi ==1)
256 if (plat->pins[pin].capabilites.i2c ==1)
260 if (plat->pins[pin].capabilites.aio ==1)
264 if (plat->pins[pin].capabilites.uart == 1)
268 syslog(LOG_NOTICE, "requested pinmode invalid");
274 mraa_platform_t mraa_get_platform_type()
276 return platform_type;
285 if (plat->aio_count == 0)
288 return plat->adc_raw;
292 mraa_adc_supported_bits()
297 if (plat->aio_count == 0)
300 return plat->adc_supported;
304 mraa_get_platform_name()
308 return plat->platform_name;
317 return plat->phy_pin_count;