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 initialised by user '%s' with EUID %d",
77 (proc_user != NULL) ? proc_user->pw_name : "<unknown>",
81 char *err_msg = "mraa: FATAL error, "
82 "libmraa program must be run as root (EUID 0), "
84 syslog(LOG_ERR, err_msg);
85 fprintf(stderr, err_msg);
86 return MRAA_ERROR_PLATFORM_NOT_INITIALISED;
90 // Initialise python threads, this allows use to grab the GIL when we are
95 advance_func = (mraa_adv_func_t*) malloc(sizeof(mraa_adv_func_t));
96 memset(advance_func, 0, sizeof(mraa_adv_func_t));
99 // Use runtime x86 platform detection
100 platform_type = mraa_x86_platform();
102 // Use runtime ARM platform detection
103 platform_type = mraa_arm_platform();
105 #error mraa_ARCH NOTHING
109 printf("mraa: FATAL error, failed to initialise platform\n");
110 return MRAA_ERROR_PLATFORM_NOT_INITIALISED;
114 "libmraa initialised for platform '%s' of type %d",
115 mraa_get_platform_name(),
129 mraa_set_priority(const unsigned int priority)
131 struct sched_param sched_s;
133 memset(&sched_s, 0, sizeof(struct sched_param));
134 if (priority > sched_get_priority_max(SCHED_RR)) {
135 sched_s.sched_priority = sched_get_priority_max(SCHED_RR);
138 sched_s.sched_priority = priority;
141 return sched_setscheduler(0, SCHED_RR, &sched_s);
145 mraa_setup_mux_mapped(mraa_pin_t meta)
149 for (mi = 0; mi < meta.mux_total; mi++) {
150 mraa_gpio_context mux_i;
151 mux_i = mraa_gpio_init_raw(meta.mux[mi].pin);
153 return MRAA_ERROR_INVALID_HANDLE;
155 // this function will sometimes fail, however this is not critical as
156 // long as the write succeeds - Test case galileo gen2 pin2
157 mraa_gpio_dir(mux_i, MRAA_GPIO_OUT);
159 if (mraa_gpio_write(mux_i, meta.mux[mi].value) != MRAA_SUCCESS) {
160 mraa_gpio_close(mux_i);
161 return MRAA_ERROR_INVALID_RESOURCE;
163 mraa_gpio_close(mux_i);
170 mraa_result_print(mraa_result_t result)
174 fprintf(stdout, "MRAA: SUCCESS\n");
176 case MRAA_ERROR_FEATURE_NOT_IMPLEMENTED:
177 fprintf(stdout, "MRAA: Feature not implemented.\n");
179 case MRAA_ERROR_FEATURE_NOT_SUPPORTED:
180 fprintf(stdout, "MRAA: Feature not supported by Hardware.\n");
182 case MRAA_ERROR_INVALID_VERBOSITY_LEVEL:
183 fprintf(stdout, "MRAA: Invalid verbosity level.\n");
185 case MRAA_ERROR_INVALID_PARAMETER:
186 fprintf(stdout, "MRAA: Invalid parameter.\n");
188 case MRAA_ERROR_INVALID_HANDLE:
189 fprintf(stdout, "MRAA: Invalid Handle.\n");
191 case MRAA_ERROR_NO_RESOURCES:
192 fprintf(stdout, "MRAA: No resources.\n");
194 case MRAA_ERROR_INVALID_RESOURCE:
195 fprintf(stdout, "MRAA: Invalid resource.\n");
197 case MRAA_ERROR_INVALID_QUEUE_TYPE:
198 fprintf(stdout, "MRAA: Invalid Queue Type.\n");
200 case MRAA_ERROR_NO_DATA_AVAILABLE:
201 fprintf(stdout, "MRAA: No Data available.\n");
203 case MRAA_ERROR_INVALID_PLATFORM:
204 fprintf(stdout, "MRAA: Platform not recognised.\n");
206 case MRAA_ERROR_PLATFORM_NOT_INITIALISED:
207 fprintf(stdout, "MRAA: Platform not initialised.\n");
209 case MRAA_ERROR_PLATFORM_ALREADY_INITIALISED:
210 fprintf(stdout, "MRAA: Platform already initialised.\n");
212 case MRAA_ERROR_UNSPECIFIED:
213 fprintf(stdout, "MRAA: Unspecified Error.\n");
216 fprintf(stdout, "MRAA: Unrecognised error.\n");
222 mraa_pin_mode_test(int pin, mraa_pinmodes_t mode)
229 if (pin > plat->phy_pin_count || pin < 0)
234 if (plat->pins[pin].capabilites.valid == 1)
238 if (plat->pins[pin].capabilites.gpio ==1)
242 if (plat->pins[pin].capabilites.pwm ==1)
245 case MRAA_PIN_FAST_GPIO:
246 if (plat->pins[pin].capabilites.fast_gpio ==1)
250 if (plat->pins[pin].capabilites.spi ==1)
254 if (plat->pins[pin].capabilites.i2c ==1)
258 if (pin < plat->aio_count)
259 pin = pin + plat->gpio_count;
260 if (plat->pins[pin].capabilites.aio ==1)
268 mraa_platform_t mraa_get_platform_type()
270 return platform_type;
279 if (plat->aio_count == 0)
282 return plat->adc_raw;
286 mraa_adc_supported_bits()
291 if (plat->aio_count == 0)
294 return plat->adc_supported;
298 mraa_setup_uart(int index)
301 return MRAA_ERROR_PLATFORM_NOT_INITIALISED;
303 if (plat->uart_dev_count == 0)
304 return MRAA_ERROR_FEATURE_NOT_SUPPORTED;
306 if (plat->uart_dev_count <= index)
307 return MRAA_ERROR_NO_RESOURCES;
309 int pos = plat->uart_dev[index].rx;
311 if (plat->pins[pos].uart.mux_total > 0)
312 if (mraa_setup_mux_mapped(plat->pins[pos].uart) != MRAA_SUCCESS)
313 return MRAA_ERROR_INVALID_RESOURCE;
317 pos = plat->uart_dev[index].tx;
318 if (plat->pins[pos].uart.mux_total > 0)
319 if (mraa_setup_mux_mapped(plat->pins[pos].uart) != MRAA_SUCCESS)
320 return MRAA_ERROR_INVALID_RESOURCE;
327 mraa_get_platform_name()
331 return plat->platform_name;