/*
* Author: Yevgeniy Kiveisha <yevgeniy.kiveisha@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 <unistd.h>
#include <iostream>
#include "nrf8001.h"
#include "nrf8001_helloworld.h"
#include <lib_aci.h>
#include <aci_setup.h>
#include <signal.h>
#include "uart_over_ble.h"
/*
* You can use the nRF UART app in the Apple iOS app store and Google Play for Android 4.3 for Samsung Galaxy S4
* with this helloworld application
*/
#ifdef SERVICES_PIPE_TYPE_MAPPING_CONTENT
static services_pipe_type_mapping_t
services_pipe_type_mapping[NUMBER_OF_PIPES] = SERVICES_PIPE_TYPE_MAPPING_CONTENT;
#else
#define NUMBER_OF_PIPES 0
static services_pipe_type_mapping_t * services_pipe_type_mapping = NULL;
#endif
/**
* Store the setup for the nRF8001 in the flash of the AVR to save on RAM
*/
static hal_aci_data_t setup_msgs[NB_SETUP_MESSAGES] = SETUP_MESSAGES_CONTENT;
/**
* aci_struct that will contain
* total initial credits
* current credit
* current state of the aci (setup/standby/active/sleep)
* open remote pipe pending
* close remote pipe pending
* Current pipe available bitmap
* Current pipe closed bitmap
* Current connection interval, slave latency and link supervision timeout
* Current State of the the GATT client (Service Discovery)
* Status of the bond (R) Peer address
*/
static struct aci_state_t aci_state;
/**
* Temporary buffers for sending ACI commands
*/
static hal_aci_evt_t aci_data;
/*
Timing change state variable
*/
static bool timing_change_done = false;
/*
Used to test the UART TX characteristic notification
*/
static uart_over_ble_t uart_over_ble;
static uint8_t uart_buffer[20];
static uint8_t uart_buffer_len = 0;
static uint8_t dummychar = 0;
void
sig_handler(int signo)
{
printf("got signal\n");
if (signo == SIGINT) {
printf("exiting application\n");
}
}
void
init_aci_setup () {
/**
* Point ACI data structures to the the setup data that the nRFgo studio generated for the nRF8001
*/
if (NULL != services_pipe_type_mapping) {
aci_state.aci_setup_info.services_pipe_type_mapping = &services_pipe_type_mapping[0];
} else {
aci_state.aci_setup_info.services_pipe_type_mapping = NULL;
}
aci_state.aci_setup_info.number_of_pipes = NUMBER_OF_PIPES;
aci_state.aci_setup_info.setup_msgs = setup_msgs;
aci_state.aci_setup_info.num_setup_msgs = NB_SETUP_MESSAGES;
}
void
uart_over_ble_init (void) {
uart_over_ble.uart_rts_local = true;
}
bool
uart_tx (uint8_t *buffer, uint8_t buffer_len) {
bool status = false;
if (lib_aci_is_pipe_available(&aci_state, PIPE_UART_OVER_BTLE_UART_TX_TX) &&
(aci_state.data_credit_available >= 1)) {
status = lib_aci_send_data(PIPE_UART_OVER_BTLE_UART_TX_TX, buffer, buffer_len);
if (status) {
aci_state.data_credit_available--;
}
}
return status;
}
bool
uart_process_control_point_rx(uint8_t *byte, uint8_t length) {
bool status = false;
aci_ll_conn_params_t *conn_params;
if (lib_aci_is_pipe_available(&aci_state, PIPE_UART_OVER_BTLE_UART_CONTROL_POINT_TX) ) {
switch (*byte) {
/*
Queues a ACI Disconnect to the nRF8001 when this packet is received.
May cause some of the UART packets being sent to be dropped
*/
case UART_OVER_BLE_DISCONNECT:
/*
Parameters:
None
*/
lib_aci_disconnect(&aci_state, ACI_REASON_TERMINATE);
status = true;
break;
/*
Queues an ACI Change Timing to the nRF8001
*/
case UART_OVER_BLE_LINK_TIMING_REQ:
/*
Parameters:
Connection interval min: 2 bytes
Connection interval max: 2 bytes
Slave latency: 2 bytes
Timeout: 2 bytes
Same format as Peripheral Preferred Connection Parameters (See nRFgo studio -> nRF8001 Configuration -> GAP Settings
Refer to the ACI Change Timing Request in the nRF8001 Product Specifications
*/
conn_params = (aci_ll_conn_params_t *)(byte+1);
lib_aci_change_timing( conn_params->min_conn_interval,
conn_params->max_conn_interval,
conn_params->slave_latency,
conn_params->timeout_mult);
status = true;
break;
/*
Clears the RTS of the UART over BLE
*/
case UART_OVER_BLE_TRANSMIT_STOP:
/*
Parameters:
None
*/
uart_over_ble.uart_rts_local = false;
status = true;
break;
/*
Set the RTS of the UART over BLE
*/
case UART_OVER_BLE_TRANSMIT_OK:
/*
Parameters:
None
*/
uart_over_ble.uart_rts_local = true;
status = true;
break;
}
}
return status;
}
int
main(int argc, char **argv)
{
//! [Interesting]
init_aci_setup ();
init_local_interfaces (&aci_state, 10, 8, 4);
while (1) {
static bool setup_required = false;
// We enter the if statement only when there is a ACI event available to be processed
if (lib_aci_event_get(&aci_state, &aci_data)) {
aci_evt_t * aci_evt;
aci_evt = &aci_data.evt;
switch(aci_evt->evt_opcode) {
/**
As soon as you reset the nRF8001 you will get an ACI Device Started Event
*/
case ACI_EVT_DEVICE_STARTED: {
aci_state.data_credit_total = aci_evt->params.device_started.credit_available;
switch(aci_evt->params.device_started.device_mode) {
case ACI_DEVICE_SETUP:
/**
When the device is in the setup mode
*/
printf ("Evt Device Started: Setup \n");
setup_required = true;
break;
case ACI_DEVICE_STANDBY:
printf ("Evt Device Started: Standby \n");
// Looking for an iPhone by sending radio advertisements
// When an iPhone connects to us we will get an ACI_EVT_CONNECTED event from the nRF8001
if (aci_evt->params.device_started.hw_error) {
usleep (20000); //Handle the HW error event correctly.
} else {
lib_aci_connect(0/* in seconds : 0 means forever */, 0x0050 /* advertising interval 50ms*/);
printf ("Advertising started \n");
}
break;
}
}
break; // ACI Device Started Event
case ACI_EVT_CMD_RSP:
//If an ACI command response event comes with an error -> stop
if (ACI_STATUS_SUCCESS != aci_evt->params.cmd_rsp.cmd_status) {
//ACI ReadDynamicData and ACI WriteDynamicData will have status codes of
//TRANSACTION_CONTINUE and TRANSACTION_COMPLETE
//all other ACI commands will have status code of ACI_STATUS_SCUCCESS for a successful command
printf ("ACI_EVT_CMD_RSP \n");
}
if (ACI_CMD_GET_DEVICE_VERSION == aci_evt->params.cmd_rsp.cmd_opcode) {
//Store the version and configuration information of the nRF8001 in the Hardware Revision String Characteristic
lib_aci_set_local_data(&aci_state, PIPE_DEVICE_INFORMATION_HARDWARE_REVISION_STRING_SET,
(uint8_t *)&(aci_evt->params.cmd_rsp.params.get_device_version), sizeof(aci_evt_cmd_rsp_params_get_device_version_t));
}
break;
case ACI_EVT_CONNECTED:
printf ("ACI_EVT_CONNECTED");
uart_over_ble_init ();
timing_change_done = false;
aci_state.data_credit_available = aci_state.data_credit_total;
/*
Get the device version of the nRF8001 and store it in the Hardware Revision String
*/
lib_aci_device_version();
break;
case ACI_EVT_PIPE_STATUS:
printf ("ACI_EVT_PIPE_STATUS \n");
if (lib_aci_is_pipe_available(&aci_state, PIPE_UART_OVER_BTLE_UART_TX_TX) && (false == timing_change_done)) {
lib_aci_change_timing_GAP_PPCP(); // change the timing on the link as specified in the nRFgo studio -> nRF8001 conf. -> GAP.
// Used to increase or decrease bandwidth
timing_change_done = true;
char hello[]="Hello World, works";
uart_tx((uint8_t *)&hello[0], strlen(hello));
}
break;
case ACI_EVT_TIMING:
printf ("Evt link connection interval changed \n");
lib_aci_set_local_data(&aci_state,
PIPE_UART_OVER_BTLE_UART_LINK_TIMING_CURRENT_SET,
(uint8_t *)&(aci_evt->params.timing.conn_rf_interval), /* Byte aligned */
PIPE_UART_OVER_BTLE_UART_LINK_TIMING_CURRENT_SET_MAX_SIZE);
break;
case ACI_EVT_DISCONNECTED:
printf ("ACI_EVT_DISCONNECTED \n");
lib_aci_connect(0/* in seconds : 0 means forever */, 0x0050 /* advertising interval 50ms*/);
printf ("Advertising started \n");
break;
case ACI_EVT_DATA_RECEIVED:
if (PIPE_UART_OVER_BTLE_UART_RX_RX == aci_evt->params.data_received.rx_data.pipe_number) {
for(int i=0; i<aci_evt->len - 2; i++) {
uart_buffer[i] = aci_evt->params.data_received.rx_data.aci_data[i];
}
uart_buffer_len = aci_evt->len - 2;
if (lib_aci_is_pipe_available(&aci_state, PIPE_UART_OVER_BTLE_UART_TX_TX)) {
}
}
if (PIPE_UART_OVER_BTLE_UART_CONTROL_POINT_RX == aci_evt->params.data_received.rx_data.pipe_number) {
//Subtract for Opcode and Pipe number
uart_process_control_point_rx(&aci_evt->params.data_received.rx_data.aci_data[0], aci_evt->len - 2);
}
printf ("Incomming data - %s\n", uart_buffer);
break;
case ACI_EVT_DATA_CREDIT:
printf ("ACI_EVT_DATA_CREDIT \n");
aci_state.data_credit_available = aci_state.data_credit_available + aci_evt->params.data_credit.credit;
break;
case ACI_EVT_PIPE_ERROR:
printf ("ACI_EVT_PIPE_ERROR \n");
//Increment the credit available as the data packet was not sent.
//The pipe error also represents the Attribute protocol Error Response sent from the peer and that should not be counted
//for the credit.
if (ACI_STATUS_ERROR_PEER_ATT_ERROR != aci_evt->params.pipe_error.error_code) {
aci_state.data_credit_available++;
}
break;
case ACI_EVT_HW_ERROR:
printf ("ACI_EVT_HW_ERROR \n");
lib_aci_connect(0/* in seconds, 0 means forever */, 0x0050 /* advertising interval 50ms*/);
printf ("Advertising started \n");
break;
}
}
/* setup_required is set to true when the device starts up and enters setup mode.
* It indicates that do_aci_setup() should be called. The flag should be cleared if
* do_aci_setup() returns ACI_STATUS_TRANSACTION_COMPLETE.
*/
if(setup_required) {
if (SETUP_SUCCESS == do_aci_setup(&aci_state)) {
setup_required = false;
}
}
usleep (100);
}
close_local_interfaces (&aci_state);
//! [Interesting]
std::cout << "exiting application" << std::endl;
return 0;
}