1 /* 2 * Author: Nandkishor Sonar 3 * Copyright (c) 2014 Intel Corporation. 4 * 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: 12 * 13 * The above copyright notice and this permission notice shall be 14 * included in all copies or substantial portions of the Software. 15 * 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. 23 */ 24 25 #include <unistd.h> 26 //! [Interesting] 27 #include "mraa/aio.h" 28 29 int 30 main() 31 { 32 mraa_aio_context adc_a0; 33 uint16_t adc_value = 0; 34 float adc_value_float = 0.0; 35 36 adc_a0 = mraa_aio_init(0); 37 if (adc_a0 == NULL) { 38 return 1; 39 } 40 41 for (;;) { 42 adc_value = mraa_aio_read(adc_a0); 43 adc_value_float = mraa_aio_read_float(adc_a0); 44 fprintf(stdout, "ADC A0 read %X - %d\n", adc_value, adc_value); 45 fprintf(stdout, "ADC A0 read float - %.5f\n", adc_value_float); 46 } 47 48 mraa_aio_close(adc_a0); 49 50 return MRAA_SUCCESS; 51 } 52 //! [Interesting] 53
