2 * Author: Brendan Le Foll <brendan.le.foll@intel.com>
3 * Copyright (c) 2014 Intel Corporation.
5 * Permission is hereby granted, free of charge, to any person obtaining
6 * a copy of this software and associated documentation files (the
7 * "Software"), to deal in the Software without restriction, including
8 * without limitation the rights to use, copy, modify, merge, publish,
9 * distribute, sublicense, and/or sell copies of the Software, and to
10 * permit persons to whom the Software is furnished to do so, subject to
11 * the following conditions:
13 * The above copyright notice and this permission notice shall be
14 * included in all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
17 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
19 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
20 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
21 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
22 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
30 #include "mraa/gpio.h"
34 mraa_gpio_context context;
40 fprintf(stdout, "Version %s on %s\n", mraa_get_version(), mraa_get_platform_name());
46 fprintf(stdout, "list List pins\n");
47 fprintf(stdout, "set pin level Set pin to level (0/1)\n");
48 fprintf(stdout, "setraw pin level Set pin to level (0/1) via mmap (if available)\n");
49 fprintf(stdout, "get pin Get pin level\n");
50 fprintf(stdout, "getraw pin Get pin level via mmap (if available)\n");
51 fprintf(stdout, "monitor pin Monitor pin level changes\n");
52 fprintf(stdout, "version Get mraa version and board name\n");
58 fprintf(stdout, "Invalid command, options are:\n");
63 list_platform_pins(uint8_t platform_offset)
65 int pin_count = mraa_get_platform_pin_count(platform_offset);
67 for (i = 0; i < pin_count; ++i) {
68 if (strcmp(mraa_get_pin_name(i), "INVALID") != 0) {
69 int pin_id = platform_offset > 0 ? mraa_get_sub_platform_id(i) : i;
70 fprintf(stdout, "%02d ", pin_id);
71 fprintf(stdout, "%*s: ", (MRAA_PIN_NAME_SIZE - 1), mraa_get_pin_name(i));
72 if (mraa_pin_mode_test(i, MRAA_PIN_GPIO))
73 fprintf(stdout, "GPIO ");
74 if (mraa_pin_mode_test(i, MRAA_PIN_I2C))
75 fprintf(stdout, "I2C ");
76 if (mraa_pin_mode_test(i, MRAA_PIN_SPI))
77 fprintf(stdout, "SPI ");
78 if (mraa_pin_mode_test(i, MRAA_PIN_PWM))
79 fprintf(stdout, "PWM ");
80 if (mraa_pin_mode_test(i, MRAA_PIN_AIO))
81 fprintf(stdout, "AIO ");
82 if (mraa_pin_mode_test(i, MRAA_PIN_UART))
83 fprintf(stdout, "UART ");
84 fprintf(stdout, "\n");
94 pin_count += list_platform_pins(MRAA_MAIN_PLATFORM_OFFSET);
95 pin_count += list_platform_pins(MRAA_SUB_PLATFORM_OFFSET);
97 fprintf(stdout, "No Pins\n");
103 gpio_set(int pin, int level, mraa_boolean_t raw)
105 mraa_gpio_context gpio = mraa_gpio_init(pin);
107 mraa_gpio_dir(gpio, MRAA_GPIO_OUT);
109 if (mraa_gpio_use_mmaped(gpio, 1) != MRAA_SUCCESS) {
111 "mmapped access to gpio %d not supported, falling back to normal mode\n", pin);
114 mraa_gpio_write(gpio, level);
117 return MRAA_ERROR_INVALID_RESOURCE;
121 gpio_get(int pin, int* level, mraa_boolean_t raw)
123 mraa_gpio_context gpio = mraa_gpio_init(pin);
125 mraa_gpio_dir(gpio, MRAA_GPIO_IN);
127 if (mraa_gpio_use_mmaped(gpio, 1) != MRAA_SUCCESS) {
129 "mmapped access to gpio %d not supported, falling back to normal mode\n", pin);
132 *level = mraa_gpio_read(gpio);
135 return MRAA_ERROR_INVALID_RESOURCE;
140 gpio_isr_handler(void* args)
142 struct gpio_source* gpio_info = (struct gpio_source*) args;
143 int level = mraa_gpio_read(gpio_info->context);
144 fprintf(stdout, "Pin %d = %d\n", gpio_info->pin, level);
148 gpio_isr_start(struct gpio_source* gpio_info)
150 gpio_info->context = mraa_gpio_init(gpio_info->pin);
151 if (gpio_info->context != NULL) {
152 mraa_result_t status = mraa_gpio_dir(gpio_info->context, MRAA_GPIO_IN);
153 if (status == MRAA_SUCCESS) {
154 status = mraa_gpio_isr(gpio_info->context, MRAA_GPIO_EDGE_BOTH, &gpio_isr_handler, gpio_info);
158 return MRAA_ERROR_INVALID_RESOURCE;
164 gpio_isr_stop(struct gpio_source* gpio_info)
166 mraa_gpio_isr_exit(gpio_info->context);
167 mraa_gpio_close(gpio_info->context);
173 main(int argc, char** argv)
176 print_command_error();
180 if (strcmp(argv[1], "list") == 0) {
182 } else if (strcmp(argv[1], "help") == 0) {
184 } else if (strcmp(argv[1], "version") == 0) {
186 } else if ((strcmp(argv[1], "set") == 0) || (strcmp(argv[1], "setraw") == 0)) {
188 int pin = atoi(argv[2]);
189 mraa_boolean_t rawmode = strcmp(argv[1], "setraw") == 0;
190 if (gpio_set(pin, atoi(argv[3]), rawmode) != MRAA_SUCCESS)
191 fprintf(stdout, "Could not initialize gpio %d\n", pin);
193 print_command_error();
195 } else if ((strcmp(argv[1], "get") == 0) || (strcmp(argv[1], "getraw") == 0)) {
197 int pin = atoi(argv[2]);
199 mraa_boolean_t rawmode = strcmp(argv[1], "getraw") == 0;
200 if (gpio_get(pin, &level, rawmode) == MRAA_SUCCESS) {
201 fprintf(stdout, "Pin %d = %d\n", pin, level);
203 fprintf(stdout, "Could not initialize gpio %d\n", pin);
206 print_command_error();
208 } else if (strcmp(argv[1], "monitor") == 0) {
210 int pin = atoi(argv[2]);
211 struct gpio_source gpio_info;
213 if (gpio_isr_start(&gpio_info) == MRAA_SUCCESS) {
214 fprintf(stdout, "Monitoring level changes to pin %d. Press RETURN to exit.\n", pin);
215 gpio_isr_handler(&gpio_info);
219 fscanf(stdin, "%c", &aux);
220 } while (aux != '\n');
221 gpio_isr_stop(&gpio_info);
223 fprintf(stdout, "Failed to register ISR for pin %d\n", pin);
226 print_command_error();
229 print_command_error();