Fork of KL46Z Wifi version. Moved to KL25Z as umbrella stand now requires 2 SPIs, thus requires 46z.
Dependencies: WIZnet_Library_ASE mbed nanoservice_client_1_12
Fork of Trenton_Doormat_FRDM-KL25Z_ETH by
pressure_mat.cpp
- Committer:
- erigow01
- Date:
- 2014-09-09
- Revision:
- 24:ad4d74ed0e4b
- Parent:
- 18:c1a2c0c738b2
File content as of revision 24:ad4d74ed0e4b:
// Pressure Mat resource implementation #include "mbed.h" #include "nsdl_support.h" #include "pressure_mat.h" #define PRESSURE_MAT_RES_ID "sen/pressure_mat" #define MINIMUM_POLL_PERIOD 1 //Seconds #define MINIMUM_REPORT_PERIOD 10 //Seconds //InterruptIn pressure_mat_in(PTD3); InterruptIn pressure_mat_in(PTA13); DigitalOut led1(LED1); Timer debounce; Timer reportTimer; Timer pollTimer; /* stored data for observable resource */ static uint8_t obs_number = 0; static uint8_t *obs_token_ptr = NULL; static uint8_t obs_token_len = 0; static uint8_t current_pressure_mat = 0; static uint8_t last_reported_pressure_mat = 99; static char pressure_mat_val[2]; /* Interrupt handler for pressure mat pin */ /* Handles Interrupt, sets state for main polling thread to send update message. */ void pressure_mat_interrupt(){ if(debounce.read_ms() > 200) { current_pressure_mat = !pressure_mat_in; led1 = !current_pressure_mat; debounce.reset(); } } void pressure_mat_resetTokens() { obs_number = 0; *obs_token_ptr = NULL; obs_token_len = 0; } //This is to be called from main program loop... it only sends report if the pressure mat has changed. void pressure_mat_report() { //Poll mat anyways... if(pollTimer.read() > MINIMUM_POLL_PERIOD) { current_pressure_mat = !pressure_mat_in; led1 = !current_pressure_mat; pollTimer.reset(); } if(reportTimer.read() > MINIMUM_REPORT_PERIOD) { //We haven't reported for minimum period, so take a reading and report. last_reported_pressure_mat = current_pressure_mat + 10; //ensure different values to force report... reportTimer.reset(); } if(last_reported_pressure_mat != current_pressure_mat) { if(obs_number != 0){// && obs_token_ptr != NULL){ obs_number++; snprintf(pressure_mat_val,2,"%d" ,current_pressure_mat); if(sn_nsdl_send_observation_notification(obs_token_ptr, obs_token_len, (uint8_t*)pressure_mat_val, 1, &obs_number, 1, COAP_MSG_TYPE_NON_CONFIRMABLE, 0) == 0) printf("Pressure Observation Sending Failed\r\n"); else printf("Pressure Observation Sent\r\n"); //Set last reported to current regardless... last_reported_pressure_mat = current_pressure_mat; } } } /* Only GET method allowed */ /* Observable resource */ static uint8_t pressure_mat_resource_cb(sn_coap_hdr_s *received_coap_ptr, sn_nsdl_addr_s *address, sn_proto_info_s * proto) { uint8_t pressure_mat_reading = !pressure_mat_in; led1 = !pressure_mat_reading; snprintf(pressure_mat_val,2,"%d" ,pressure_mat_reading); sn_coap_hdr_s *coap_res_ptr = 0; printf("pressure mat callback\r\n"); coap_res_ptr = sn_coap_build_response(received_coap_ptr, COAP_MSG_CODE_RESPONSE_CONTENT); coap_res_ptr->payload_len = 1; coap_res_ptr->payload_ptr = (uint8_t*)pressure_mat_val; if(received_coap_ptr->token_ptr) { printf(" Token included\r\n"); if(obs_token_ptr) { free(obs_token_ptr); obs_token_ptr = 0; } obs_token_ptr = (uint8_t*)malloc(received_coap_ptr->token_len); if(obs_token_ptr) { memcpy(obs_token_ptr, received_coap_ptr->token_ptr, received_coap_ptr->token_len); obs_token_len = received_coap_ptr->token_len; } } if(received_coap_ptr->options_list_ptr->observe) { coap_res_ptr->options_list_ptr = (sn_coap_options_list_s*)malloc(sizeof(sn_coap_options_list_s)); memset(coap_res_ptr->options_list_ptr, 0, sizeof(sn_coap_options_list_s)); coap_res_ptr->options_list_ptr->observe_ptr = &obs_number; coap_res_ptr->options_list_ptr->observe_len = 1; obs_number++; } printf(" Send observation %d... \r\n", obs_number); sn_nsdl_send_coap_message(address, coap_res_ptr); coap_res_ptr->options_list_ptr->observe_ptr = 0; sn_coap_parser_release_allocated_coap_msg_mem(coap_res_ptr); return 0; } int create_pressure_mat_resource(sn_nsdl_resource_info_s *resource_ptr) { nsdl_create_dynamic_resource(resource_ptr, sizeof(PRESSURE_MAT_RES_ID)-1, (uint8_t*)PRESSURE_MAT_RES_ID, 0, 0, 1, &pressure_mat_resource_cb, SN_GRS_GET_ALLOWED); obs_number++; pressure_mat_in.mode(PullUp); //Attach interrupt handler and start debounce... debounce.start(); pressure_mat_in.rise(&pressure_mat_interrupt); pressure_mat_in.fall(&pressure_mat_interrupt); reportTimer.start(); pollTimer.start(); return 0; }