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");
65 int pin_count = mraa_get_pin_count();
67 fprintf(stdout, "No Pins\n");
71 for (i = 0; i < pin_count; ++i) {
72 if (strcmp(mraa_get_pin_name(i), "INVALID") != 0) {
73 fprintf(stdout, "%02d ", i);
74 fprintf(stdout, "%*s: ", (MRAA_PIN_NAME_SIZE - 1), mraa_get_pin_name(i));
75 if (mraa_pin_mode_test(i, MRAA_PIN_GPIO))
76 fprintf(stdout, "GPIO ");
77 if (mraa_pin_mode_test(i, MRAA_PIN_I2C))
78 fprintf(stdout, "I2C ");
79 if (mraa_pin_mode_test(i, MRAA_PIN_SPI))
80 fprintf(stdout, "SPI ");
81 if (mraa_pin_mode_test(i, MRAA_PIN_PWM))
82 fprintf(stdout, "PWM ");
83 if (mraa_pin_mode_test(i, MRAA_PIN_AIO))
84 fprintf(stdout, "AIO ");
85 if (mraa_pin_mode_test(i, MRAA_PIN_UART))
86 fprintf(stdout, "UART ");
87 fprintf(stdout, "\n");
93 gpio_set(int pin, int level, mraa_boolean_t raw)
95 mraa_gpio_context gpio = mraa_gpio_init(pin);
97 mraa_gpio_dir(gpio, MRAA_GPIO_OUT);
99 if (mraa_gpio_use_mmaped(gpio, 1) != MRAA_SUCCESS) {
101 "mmapped access to gpio not supported, falling back to normal mode\n", pin);
104 mraa_gpio_write(gpio, level);
107 return MRAA_ERROR_INVALID_RESOURCE;
111 gpio_get(int pin, int* level, mraa_boolean_t raw)
113 mraa_gpio_context gpio = mraa_gpio_init(pin);
115 mraa_gpio_dir(gpio, MRAA_GPIO_IN);
117 if (mraa_gpio_use_mmaped(gpio, 1) != MRAA_SUCCESS) {
119 "mmapped access to gpio not supported, falling back to normal mode\n", pin);
122 *level = mraa_gpio_read(gpio);
125 return MRAA_ERROR_INVALID_RESOURCE;
130 gpio_isr_handler(void* args)
132 struct gpio_source* gpio_info = (struct gpio_source*) args;
133 int level = mraa_gpio_read(gpio_info->context);
134 fprintf(stdout, "Pin %d = %d\n", gpio_info->pin, level);
138 gpio_isr_start(struct gpio_source* gpio_info)
140 gpio_info->context = mraa_gpio_init(gpio_info->pin);
141 if (gpio_info->context != NULL) {
142 mraa_result_t status = mraa_gpio_dir(gpio_info->context, MRAA_GPIO_IN);
143 if (status == MRAA_SUCCESS) {
144 status = mraa_gpio_isr(gpio_info->context, MRAA_GPIO_EDGE_BOTH, &gpio_isr_handler, gpio_info);
148 return MRAA_ERROR_INVALID_RESOURCE;
154 gpio_isr_stop(struct gpio_source* gpio_info)
156 mraa_gpio_isr_exit(gpio_info->context);
157 mraa_gpio_close(gpio_info->context);
163 main(int argc, char** argv)
166 print_command_error();
170 if (strcmp(argv[1], "list") == 0) {
172 } else if (strcmp(argv[1], "help") == 0) {
174 } else if (strcmp(argv[1], "version") == 0) {
176 } else if ((strcmp(argv[1], "set") == 0) || (strcmp(argv[1], "setraw") == 0)) {
178 int pin = atoi(argv[2]);
179 mraa_boolean_t rawmode = strcmp(argv[1], "setraw") == 0;
180 if (gpio_set(pin, atoi(argv[3]), rawmode) != MRAA_SUCCESS)
181 fprintf(stdout, "Could not initialize gpio %d\n", pin);
183 print_command_error();
185 } else if ((strcmp(argv[1], "get") == 0) || (strcmp(argv[1], "getraw") == 0)) {
187 int pin = atoi(argv[2]);
189 mraa_boolean_t rawmode = strcmp(argv[1], "getraw") == 0;
190 if (gpio_get(pin, &level, rawmode) == MRAA_SUCCESS) {
191 fprintf(stdout, "Pin %d = %d\n", pin, level);
193 fprintf(stdout, "Could not initialize gpio %d\n", pin);
196 print_command_error();
198 } else if (strcmp(argv[1], "monitor") == 0) {
200 int pin = atoi(argv[2]);
201 struct gpio_source gpio_info;
203 if (gpio_isr_start(&gpio_info) == MRAA_SUCCESS) {
204 fprintf(stdout, "Monitoring level changes to pin %d. Press RETURN to exit.\n", pin);
205 gpio_isr_handler(&gpio_info);
206 while (getchar() != '\n')
208 gpio_isr_stop(&gpio_info);
210 fprintf(stdout, "Failed to register ISR for pin %d\n", pin);
213 print_command_error();
216 print_command_error();