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Diffstat (limited to 'peripheral/libmraa/examples/mraa-gpio.c')
-rw-r--r--peripheral/libmraa/examples/mraa-gpio.c234
1 files changed, 0 insertions, 234 deletions
diff --git a/peripheral/libmraa/examples/mraa-gpio.c b/peripheral/libmraa/examples/mraa-gpio.c
deleted file mode 100644
index e94d48f..0000000
--- a/peripheral/libmraa/examples/mraa-gpio.c
+++ /dev/null
@@ -1,234 +0,0 @@
-/*
- * Author: Brendan Le Foll <brendan.le.foll@intel.com>
- * Copyright (c) 2014 Intel Corporation.
- *
- * Permission is hereby granted, free of charge, to any person obtaining
- * a copy of this software and associated documentation files (the
- * "Software"), to deal in the Software without restriction, including
- * without limitation the rights to use, copy, modify, merge, publish,
- * distribute, sublicense, and/or sell copies of the Software, and to
- * permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- *
- * The above copyright notice and this permission notice shall be
- * included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
- * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
- * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
- * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
- * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-#include "mraa/gpio.h"
-
-struct gpio_source {
- int pin;
- mraa_gpio_context context;
-};
-
-void
-print_version()
-{
- fprintf(stdout, "Version %s on %s\n", mraa_get_version(), mraa_get_platform_name());
-}
-
-void
-print_help()
-{
- fprintf(stdout, "list List pins\n");
- fprintf(stdout, "set pin level Set pin to level (0/1)\n");
- fprintf(stdout, "setraw pin level Set pin to level (0/1) via mmap (if available)\n");
- fprintf(stdout, "get pin Get pin level\n");
- fprintf(stdout, "getraw pin Get pin level via mmap (if available)\n");
- fprintf(stdout, "monitor pin Monitor pin level changes\n");
- fprintf(stdout, "version Get mraa version and board name\n");
-}
-
-void
-print_command_error()
-{
- fprintf(stdout, "Invalid command, options are:\n");
- print_help();
-}
-
-int
-list_platform_pins(uint8_t platform_offset)
-{
- int pin_count = mraa_get_platform_pin_count(platform_offset);
- int i;
- for (i = 0; i < pin_count; ++i) {
- int pin_id = platform_offset > 0 ? mraa_get_sub_platform_id(i) : i;
- char* pin_name = mraa_get_pin_name(pin_id);
- if (strcmp(pin_name, "INVALID") != 0) {
- fprintf(stdout, "%02d ", pin_id);
- fprintf(stdout, "%*s: ", (MRAA_PIN_NAME_SIZE - 1), pin_name);
- if (mraa_pin_mode_test(pin_id, MRAA_PIN_GPIO))
- fprintf(stdout, "GPIO ");
- if (mraa_pin_mode_test(pin_id, MRAA_PIN_I2C))
- fprintf(stdout, "I2C ");
- if (mraa_pin_mode_test(pin_id, MRAA_PIN_SPI))
- fprintf(stdout, "SPI ");
- if (mraa_pin_mode_test(pin_id, MRAA_PIN_PWM))
- fprintf(stdout, "PWM ");
- if (mraa_pin_mode_test(pin_id, MRAA_PIN_AIO))
- fprintf(stdout, "AIO ");
- if (mraa_pin_mode_test(pin_id, MRAA_PIN_UART))
- fprintf(stdout, "UART ");
- fprintf(stdout, "\n");
- }
- }
- return pin_count;
-}
-
-int
-list_pins()
-{
- int pin_count = 0;
- pin_count += list_platform_pins(MRAA_MAIN_PLATFORM_OFFSET);
- pin_count += list_platform_pins(MRAA_SUB_PLATFORM_OFFSET);
- if (pin_count == 0) {
- fprintf(stdout, "No Pins\n");
- }
-}
-
-
-mraa_result_t
-gpio_set(int pin, int level, mraa_boolean_t raw)
-{
- mraa_gpio_context gpio = mraa_gpio_init(pin);
- if (gpio != NULL) {
- mraa_gpio_dir(gpio, MRAA_GPIO_OUT);
- if (raw != 0) {
- if (mraa_gpio_use_mmaped(gpio, 1) != MRAA_SUCCESS) {
- fprintf(stdout,
- "mmapped access to gpio %d not supported, falling back to normal mode\n", pin);
- }
- }
- mraa_gpio_write(gpio, level);
- return MRAA_SUCCESS;
- }
- return MRAA_ERROR_INVALID_RESOURCE;
-}
-
-mraa_result_t
-gpio_get(int pin, int* level, mraa_boolean_t raw)
-{
- mraa_gpio_context gpio = mraa_gpio_init(pin);
- if (gpio != NULL) {
- mraa_gpio_dir(gpio, MRAA_GPIO_IN);
- if (raw != 0) {
- if (mraa_gpio_use_mmaped(gpio, 1) != MRAA_SUCCESS) {
- fprintf(stdout,
- "mmapped access to gpio %d not supported, falling back to normal mode\n", pin);
- }
- }
- *level = mraa_gpio_read(gpio);
- return MRAA_SUCCESS;
- }
- return MRAA_ERROR_INVALID_RESOURCE;
-}
-
-
-void
-gpio_isr_handler(void* args)
-{
- struct gpio_source* gpio_info = (struct gpio_source*) args;
- int level = mraa_gpio_read(gpio_info->context);
- fprintf(stdout, "Pin %d = %d\n", gpio_info->pin, level);
-}
-
-mraa_result_t
-gpio_isr_start(struct gpio_source* gpio_info)
-{
- gpio_info->context = mraa_gpio_init(gpio_info->pin);
- if (gpio_info->context != NULL) {
- mraa_result_t status = mraa_gpio_dir(gpio_info->context, MRAA_GPIO_IN);
- if (status == MRAA_SUCCESS) {
- status = mraa_gpio_isr(gpio_info->context, MRAA_GPIO_EDGE_BOTH, &gpio_isr_handler, gpio_info);
- }
- return status;
- } else {
- return MRAA_ERROR_INVALID_RESOURCE;
- }
-}
-
-
-mraa_result_t
-gpio_isr_stop(struct gpio_source* gpio_info)
-{
- mraa_gpio_isr_exit(gpio_info->context);
- mraa_gpio_close(gpio_info->context);
- return MRAA_SUCCESS;
-}
-
-
-int
-main(int argc, char** argv)
-{
- if (argc == 1) {
- print_command_error();
- }
-
- if (argc > 1) {
- if (strcmp(argv[1], "list") == 0) {
- list_pins();
- } else if (strcmp(argv[1], "help") == 0) {
- print_help();
- } else if (strcmp(argv[1], "version") == 0) {
- print_version();
- } else if ((strcmp(argv[1], "set") == 0) || (strcmp(argv[1], "setraw") == 0)) {
- if (argc == 4) {
- int pin = atoi(argv[2]);
- mraa_boolean_t rawmode = strcmp(argv[1], "setraw") == 0;
- if (gpio_set(pin, atoi(argv[3]), rawmode) != MRAA_SUCCESS)
- fprintf(stdout, "Could not initialize gpio %d\n", pin);
- } else {
- print_command_error();
- }
- } else if ((strcmp(argv[1], "get") == 0) || (strcmp(argv[1], "getraw") == 0)) {
- if (argc == 3) {
- int pin = atoi(argv[2]);
- int level;
- mraa_boolean_t rawmode = strcmp(argv[1], "getraw") == 0;
- if (gpio_get(pin, &level, rawmode) == MRAA_SUCCESS) {
- fprintf(stdout, "Pin %d = %d\n", pin, level);
- } else {
- fprintf(stdout, "Could not initialize gpio %d\n", pin);
- }
- } else {
- print_command_error();
- }
- } else if (strcmp(argv[1], "monitor") == 0) {
- if (argc == 3) {
- int pin = atoi(argv[2]);
- struct gpio_source gpio_info;
- gpio_info.pin = pin;
- if (gpio_isr_start(&gpio_info) == MRAA_SUCCESS) {
- fprintf(stdout, "Monitoring level changes to pin %d. Press RETURN to exit.\n", pin);
- gpio_isr_handler(&gpio_info);
- char aux = 0;
- do {
- fflush(stdin);
- fscanf(stdin, "%c", &aux);
- } while (aux != '\n');
- gpio_isr_stop(&gpio_info);
- } else {
- fprintf(stdout, "Failed to register ISR for pin %d\n", pin);
- }
- } else {
- print_command_error();
- }
- } else {
- print_command_error();
- }
- }
- return 0;
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-18 19:43:17 +0000