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Diffstat (limited to 'peripheral/libmraa/examples/mraa-i2c.c')
-rw-r--r--peripheral/libmraa/examples/mraa-i2c.c284
1 files changed, 0 insertions, 284 deletions
diff --git a/peripheral/libmraa/examples/mraa-i2c.c b/peripheral/libmraa/examples/mraa-i2c.c
deleted file mode 100644
index e8a0494..0000000
--- a/peripheral/libmraa/examples/mraa-i2c.c
+++ /dev/null
@@ -1,284 +0,0 @@
-/*
- * Author: Henry Bruce <henry.bruce@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/i2c.h"
-
-#include "mraa_internal_types.h"
-
-extern mraa_board_t* plat;
-
-void
-print_version()
-{
- fprintf(stdout, "Version %s on %s", mraa_get_version(), mraa_get_platform_name());
- if (plat != NULL && plat->sub_platform != NULL)
- fprintf(stdout, " with %s", plat->sub_platform->platform_name);
- fprintf(stdout, "\n");
-}
-
-void
-print_help()
-{
- fprintf(stdout, "version Get mraa version and board name\n");
- fprintf(stdout, "list List available busses\n");
- fprintf(stdout, "detect bus List detected devices on specified bus\n");
- fprintf(stdout, "get bus device reg Get value from specified device register\n");
- fprintf(stdout, "set bus device reg value Set specified device register to value\n");
-}
-
-void
-print_command_error()
-{
- fprintf(stdout, "Invalid command, options are:\n");
- print_help();
-}
-
-void
-print_bus(mraa_board_t* board)
-{
- int i, bus;
- for (i = 0; i < board->i2c_bus_count; ++i) {
- char* busType;
- switch (board->platform_type) {
- case MRAA_INTEL_GALILEO_GEN1:
- case MRAA_INTEL_GALILEO_GEN2:
- case MRAA_INTEL_EDISON_FAB_C:
- case MRAA_INTEL_DE3815:
- case MRAA_INTEL_MINNOWBOARD_MAX:
- case MRAA_RASPBERRY_PI:
- case MRAA_BEAGLEBONE:
- case MRAA_BANANA:
- case MRAA_UP:
- bus = i;
- busType = "linux";
- break;
- case MRAA_FTDI_FT4222:
- busType = "ft4222";
- bus = mraa_get_sub_platform_id(i);
- break;
- default:
- busType = "unknown";
- break;
- }
- int id = board->i2c_bus[i].bus_id;
- fprintf(stdout, "Bus %3d: id=%02d type=%s ", bus, id, busType);
- if (i == board->def_i2c_bus)
- fprintf(stdout, " default");
- if (id == -1)
- fprintf(stdout, " disabled");
-
- fprintf(stdout, "\n");
- }
-}
-
-void
-print_busses()
-{
- print_bus(plat);
- if (mraa_has_sub_platform())
- print_bus(plat->sub_platform);
-}
-
-mraa_result_t
-i2c_get(int bus, uint8_t device_address, uint8_t register_address, uint8_t* data)
-{
- mraa_result_t status = MRAA_SUCCESS;
- mraa_i2c_context i2c = mraa_i2c_init(bus);
- if (i2c == NULL) {
- return MRAA_ERROR_NO_RESOURCES;
- }
- status = mraa_i2c_address(i2c, device_address);
- if (status != MRAA_SUCCESS) {
- goto i2c_get_exit;
- }
- status = mraa_i2c_write_byte(i2c, register_address);
- if (status != MRAA_SUCCESS) {
- goto i2c_get_exit;
- }
- status = mraa_i2c_read(i2c, data, 1) == 1 ? MRAA_SUCCESS : MRAA_ERROR_UNSPECIFIED;
- if (status != MRAA_SUCCESS) {
- goto i2c_get_exit;
- }
-i2c_get_exit:
- mraa_i2c_stop(i2c);
- return status;
-}
-
-mraa_result_t
-i2c_set(int bus, uint8_t device_address, uint8_t register_address, uint8_t data)
-{
- mraa_result_t status = MRAA_SUCCESS;
- mraa_i2c_context i2c = mraa_i2c_init(bus);
- if (i2c == NULL) {
- return MRAA_ERROR_NO_RESOURCES;
- }
- status = mraa_i2c_address(i2c, device_address);
- if (status != MRAA_SUCCESS) {
- fprintf(stderr, "Could not set i2c device address\n");
- goto i2c_set_exit;
- }
- status = mraa_i2c_write_byte_data(i2c, data, register_address);
- if (status != MRAA_SUCCESS) {
- fprintf(stderr, "Could not write to i2c register. Status = %d\n", status);
- goto i2c_set_exit;
- }
-i2c_set_exit:
- mraa_i2c_stop(i2c);
- return status;
-}
-
-void
-i2c_detect_devices(int bus)
-{
- mraa_result_t status = MRAA_SUCCESS;
- mraa_i2c_context i2c = mraa_i2c_init(bus);
- if (i2c == NULL) {
- return;
- }
- int addr;
- for (addr = 0x0; addr < 0x80; ++addr) {
- uint8_t value;
- if ((addr) % 16 == 0)
- printf("%02x: ", addr);
- if (i2c_get(bus, addr, 0, &value) == MRAA_SUCCESS)
- printf("%02x ", addr);
- else
- printf("-- ");
- if ((addr + 1) % 16 == 0)
- printf("\n");
- }
-}
-
-int
-process_command(int argc, char** argv)
-{
- int status = 0;
- if (strcmp(argv[1], "help") == 0) {
- print_help();
- return 0;
- } else if (strcmp(argv[1], "version") == 0) {
- print_version();
- return 0;
- } else if (strcmp(argv[1], "list") == 0) {
- print_busses();
- return 0;
- } else if (strcmp(argv[1], "detect") == 0) {
- if (argc == 3) {
- int bus = strtol(argv[2], NULL, 0);
- i2c_detect_devices(bus);
- return 0;
- } else {
- print_command_error();
- return 1;
- }
- } else if ((strcmp(argv[1], "get") == 0) || (strcmp(argv[1], "getrpt") == 0)) {
- if (argc == 5) {
- int interation = 0;
- mraa_boolean_t should_repeat = strcmp(argv[1], "getrpt") == 0;
- int bus = strtol(argv[2], NULL, 0);
- uint8_t device_address = strtol(argv[3], NULL, 0);
- uint8_t register_address = strtol(argv[4], NULL, 0);
- // fprintf(stdout, "Device %02X, Register = %02X\n", device_address, register_address);
- uint8_t data;
- do {
- if (i2c_get(bus, device_address, register_address, &data) == MRAA_SUCCESS) {
- if (should_repeat)
- fprintf(stdout, "%4d: ", interation);
- fprintf(stdout, "Register %#02X = %#02X\n", register_address, data);
- status = 0;
- } else {
- fprintf(stdout, "i2c get failed\n");
- status = 1;
- }
- interation++;
- usleep(10000);
- } while (should_repeat && status == 0);
- } else {
- print_command_error();
- status = 1;
- }
- return status;
- } else if ((strcmp(argv[1], "set") == 0)) {
- if (argc == 6) {
- int bus = strtol(argv[2], NULL, 0);
- uint8_t device_address = strtol(argv[3], NULL, 0);
- uint8_t register_address = strtol(argv[4], NULL, 0);
- uint8_t value = strtol(argv[5], NULL, 0);
- fprintf(stdout, "Device %02X, Register = %02X, Value = %02X\n", device_address,
- register_address, value);
- if (i2c_set(bus, device_address, register_address, value) != MRAA_SUCCESS) {
- fprintf(stdout, "i2c set failed\n");
- return 0;
- }
- return 1;
- } else {
- print_command_error();
- return 1;
- }
- } else {
- print_command_error();
- return 1;
- }
-}
-
-void
-run_interactive_mode()
-{
- char command[80];
- while (1) {
- int i, argc = 1;
- char* argv[32];
- char* arg;
- argv[0] = "mraa-i2c";
- fprintf(stdout, "Command: ");
- fgets(command, 80, stdin);
- command[strlen(command) - 1] = 0;
- if (strcmp(command, "q") == 0)
- return;
- char* str = strtok(command, " ");
- while (str != NULL) {
- arg = malloc(strlen(str) + 1);
- argv[argc++] = strcpy(arg, str);
- str = strtok(NULL, " ");
- }
- process_command(argc, argv);
- for (i = 1; i < argc; ++i)
- free(argv[i]);
- }
-}
-
-int
-main(int argc, char** argv)
-{
- mraa_set_log_level(7);
- if (argc == 1) {
- run_interactive_mode();
- return 0;
- } else
- return process_command(argc, argv);
-}
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