Michael Koster / Mbed 2 deprecated SensorNotifyLED

Initial commit

Dependencies:   Chainable_RGB_LED EthernetInterface LED_Bar mbed-rtos mbed nsdl_lib

resources/gas_sensor.cpp@0:950566b0e099, 2014-10-30 (annotated)

Committer:
michaeljkoster
Date:
Thu Oct 30 21:44:12 2014 +0000
Revision:
0:950566b0e099
Initial commit

Who changed what in which revision?

UserRevisionLine numberNew contents of line
michaeljkoster 0:950566b0e099 1 // gas sensor resource implementation
michaeljkoster 0:950566b0e099 2
michaeljkoster 0:950566b0e099 3 #include "mbed.h"
michaeljkoster 0:950566b0e099 4 #include "nsdl_support.h"
michaeljkoster 0:950566b0e099 5
michaeljkoster 0:950566b0e099 6 #define GAS_RES_ID "11102/0/5700"
michaeljkoster 0:950566b0e099 7 #define GAS_RES_RT "urn:X-mbed:gas-sensor"
michaeljkoster 0:950566b0e099 8
michaeljkoster 0:950566b0e099 9 extern Serial pc;
michaeljkoster 0:950566b0e099 10 uint8_t gas_max_age = 0;
michaeljkoster 0:950566b0e099 11 uint8_t gas_content_type = 50;
michaeljkoster 0:950566b0e099 12
michaeljkoster 0:950566b0e099 13 AnalogIn gasSensor(A0);
michaeljkoster 0:950566b0e099 14 int gas_percent;
michaeljkoster 0:950566b0e099 15 char gasPctString[5];
michaeljkoster 0:950566b0e099 16
michaeljkoster 0:950566b0e099 17 /* Only GET method allowed */
michaeljkoster 0:950566b0e099 18 static uint8_t gas_sensor_resource_cb(sn_coap_hdr_s *received_coap_ptr, sn_nsdl_addr_s *address, sn_proto_info_s * proto)
michaeljkoster 0:950566b0e099 19 {
michaeljkoster 0:950566b0e099 20 sn_coap_hdr_s *coap_res_ptr = 0;
michaeljkoster 0:950566b0e099 21 gas_percent = gasSensor.read() * 100;
michaeljkoster 0:950566b0e099 22 sprintf(gasPctString,"%d", gas_percent);
michaeljkoster 0:950566b0e099 23 pc.printf("gas callback\r\n");
michaeljkoster 0:950566b0e099 24 pc.printf("gas percent %s\r\n", gasPctString);
michaeljkoster 0:950566b0e099 25
michaeljkoster 0:950566b0e099 26 if(received_coap_ptr->msg_code == COAP_MSG_CODE_REQUEST_GET)
michaeljkoster 0:950566b0e099 27 {
michaeljkoster 0:950566b0e099 28 coap_res_ptr = sn_coap_build_response(received_coap_ptr, COAP_MSG_CODE_RESPONSE_CONTENT);
michaeljkoster 0:950566b0e099 29
michaeljkoster 0:950566b0e099 30 coap_res_ptr->payload_len = strlen(gasPctString);
michaeljkoster 0:950566b0e099 31 coap_res_ptr->payload_ptr = (uint8_t*)gasPctString;
michaeljkoster 0:950566b0e099 32
michaeljkoster 0:950566b0e099 33 coap_res_ptr->content_type_ptr = &gas_content_type;
michaeljkoster 0:950566b0e099 34 coap_res_ptr->content_type_len = sizeof(gas_content_type);
michaeljkoster 0:950566b0e099 35
michaeljkoster 0:950566b0e099 36 coap_res_ptr->options_list_ptr = (sn_coap_options_list_s*)nsdl_alloc(sizeof(sn_coap_options_list_s));
michaeljkoster 0:950566b0e099 37 if(!coap_res_ptr->options_list_ptr)
michaeljkoster 0:950566b0e099 38 {
michaeljkoster 0:950566b0e099 39 pc.printf("cant alloc option list for max-age\r\n");
michaeljkoster 0:950566b0e099 40 coap_res_ptr->options_list_ptr = NULL; //FIXME report error and recover
michaeljkoster 0:950566b0e099 41 }
michaeljkoster 0:950566b0e099 42 memset(coap_res_ptr->options_list_ptr, 0, sizeof(sn_coap_options_list_s));
michaeljkoster 0:950566b0e099 43 coap_res_ptr->options_list_ptr->max_age_ptr = &gas_max_age;
michaeljkoster 0:950566b0e099 44 coap_res_ptr->options_list_ptr->max_age_len = sizeof(gas_max_age);
michaeljkoster 0:950566b0e099 45
michaeljkoster 0:950566b0e099 46 sn_nsdl_send_coap_message(address, coap_res_ptr);
michaeljkoster 0:950566b0e099 47 nsdl_free(coap_res_ptr->options_list_ptr);
michaeljkoster 0:950566b0e099 48 coap_res_ptr->options_list_ptr = NULL;
michaeljkoster 0:950566b0e099 49 coap_res_ptr->content_type_ptr = NULL;// parser_release below tries to free this memory
michaeljkoster 0:950566b0e099 50
michaeljkoster 0:950566b0e099 51 }
michaeljkoster 0:950566b0e099 52
michaeljkoster 0:950566b0e099 53 sn_coap_parser_release_allocated_coap_msg_mem(coap_res_ptr);
michaeljkoster 0:950566b0e099 54
michaeljkoster 0:950566b0e099 55 return 0;
michaeljkoster 0:950566b0e099 56 }
michaeljkoster 0:950566b0e099 57
michaeljkoster 0:950566b0e099 58 int create_gas_sensor_resource(sn_nsdl_resource_info_s *resource_ptr)
michaeljkoster 0:950566b0e099 59 {
michaeljkoster 0:950566b0e099 60 nsdl_create_dynamic_resource(resource_ptr, sizeof(GAS_RES_ID)-1, (uint8_t*)GAS_RES_ID, sizeof(GAS_RES_RT)-1, (uint8_t*)GAS_RES_RT, 0, &gas_sensor_resource_cb, (SN_GRS_GET_ALLOWED));
michaeljkoster 0:950566b0e099 61 return 0;
michaeljkoster 0:950566b0e099 62 }