Aim: transfer large data coming from UART to nRF52832 over BLE 5.0 as fast as possible. Want to use 921600 baud rate in the case given below.
Scenario:
SDK: 15.2.0
Device: nRF52832
SoftDevice: S132 6.1.0
Tested speed of BLE is around 1070 Kbps between nRF52832 and android application without any UART. The program is build on the top of Nordic Official Image transfer example( Image transfer example is build on the top of ble uart example). There is no problem is BLE sending mechanism and Android application. And then I modified this program to work like this
nRF52832 sends S on UART
on UART 244 bytes are received
nRF52832 sends 244 bytes over BLE 5.0 to android application
just after sending nRF52832 sends again S on UART and cycle continues
if there is nRF resources error on sending over ble, it takes break and until it receives ble tx completion event and then, it sends S again and the cycle continues
UART is not using HW Flow Control pins( because of the design we cant use four pins). This program works fine at 115200 but when I change at 250000 it throws error after sending some data or immediately in the starting like this
0> <error> app: ERROR 1 [NRF_ERROR_SVC_HANDLER_MISSING] at ..\..\..\main.c:674
0> PC at: 0x0002C879
then I did lot of testing also
- without using soft device it works fine at 921600 baud rate.
- Modified program like on BLE tx completion event, nRF52832 sends S on UART to get 244 bytes and send 244 bytes over ble, after sending it does nothing just wait for tx completion event and after get event it sends S on uart and cycle continues(unlikely in the above case, just after sending over BLE it doesnt wait for TX completion event, it sends S on UART and gets 244 bytes.). In this case it works on 921600 sometimes but when i edit program little bit, it starts throwing same error at the starting of receiving 244 bytes. Here it throws error unpredictably.
- I checked that EasyDMA is enabled or not in sdk_config.h file but still have confusion, so please check also that EASY DMA is enabled or not.
Please tell me how to remove that error. I want to get data on UART at 921600 baud rate and send this data over BLE 5.0 simultaneously. I did some calculation and the possible achievable throughput is 800 Kbps (getting data from uart at 921600 and sending over ble). I want to achieve at least 700 Kbps. Please suggest me how can i use EasyDMA to make this possible. how can I use buffers to get maximum speed.
main.c file
/**
* Copyright (c) 2014 - 2018, Nordic Semiconductor ASA
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form, except as embedded into a Nordic
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* such product, must reproduce the above copyright notice, this list of
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*
* 3. Neither the name of Nordic Semiconductor ASA nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* 4. This software, with or without modification, must only be used with a
* Nordic Semiconductor ASA integrated circuit.
*
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*
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*/
/** @file
*
* @defgroup ble_sdk_uart_over_ble_main main.c
* @{
* @ingroup ble_sdk_app_nus_eval
* @brief UART over BLE application main file.
*
* This file contains the source code for a sample application that uses the Nordic UART service.
* This application uses the @ref srvlib_conn_params module.
*/
#include <stdint.h>
#include <string.h>
#include "nordic_common.h"
#include "nrf.h"
#include "ble_hci.h"
#include "ble_advdata.h"
#include "ble_advertising.h"
#include "ble_conn_params.h"
#include "nrf_sdh.h"
#include "nrf_sdh_soc.h"
#include "nrf_sdh_ble.h"
#include "nrf_ble_gatt.h"
#include "nrf_ble_qwr.h"
#include "app_timer.h"
#include "ble_image_transfer_service.h"
#include "app_uart.h"
#include "app_util_platform.h"
#include "bsp_btn_ble.h"
#include "nrf_pwr_mgmt.h"
#if defined (UART_PRESENT)
#include "nrf_uart.h"
#endif
#if defined (UARTE_PRESENT)
#include "nrf_uarte.h"
#endif
#include "nrf_delay.h"
#include "nrf_log.h"
#include "nrf_log_ctrl.h"
#include "nrf_log_default_backends.h"
#define PCA10056_USE_FRONT_HEADER 0 /**< Use the front header (P24) for the camera module. Requires SB10-15 and SB20-25 to be soldered/cut, as described in the readme. */
#define APP_BLE_CONN_CFG_TAG 1 /**< A tag identifying the SoftDevice BLE configuration. */
#define DEVICE_NAME "Camera Demo v2" /**< Name of device. Will be included in the advertising data. */
#define NUS_SERVICE_UUID_TYPE BLE_UUID_TYPE_VENDOR_BEGIN /**< UUID type for the Nordic UART Service (vendor specific). */
#define APP_BLE_OBSERVER_PRIO 3 /**< Application's BLE observer priority. You shouldn't need to modify this value. */
#define APP_ADV_INTERVAL 64 /**< The advertising interval (in units of 0.625 ms. This value corresponds to 40 ms). */
#define APP_ADV_DURATION 18000 /**< The advertising duration (180 seconds) in units of 10 milliseconds. */
#define MIN_CONN_INTERVAL 6 //MSEC_TO_UNITS(15, UNIT_1_25_MS) /**< Minimum acceptable connection interval (20 ms), Connection interval uses 1.25 ms units. */
#define MAX_CONN_INTERVAL 9 //MSEC_TO_UNITS(15, UNIT_1_25_MS) /**< Maximum acceptable connection interval (75 ms), Connection interval uses 1.25 ms units. */
#define SLAVE_LATENCY 0 /**< Slave latency. */
#define CONN_SUP_TIMEOUT MSEC_TO_UNITS(4000, UNIT_10_MS) /**< Connection supervisory timeout (4 seconds), Supervision Timeout uses 10 ms units. */
#define FIRST_CONN_PARAMS_UPDATE_DELAY APP_TIMER_TICKS(5000) /**< Time from initiating event (connect or start of notification) to first time sd_ble_gap_conn_param_update is called (5 seconds). */
#define NEXT_CONN_PARAMS_UPDATE_DELAY APP_TIMER_TICKS(30000) /**< Time between each call to sd_ble_gap_conn_param_update after the first call (30 seconds). */
#define MAX_CONN_PARAMS_UPDATE_COUNT 3 /**< Number of attempts before giving up the connection parameter negotiation. */
#define DEAD_BEEF 0xDEADBEEF /**< Value used as error code on stack dump, can be used to identify stack location on stack unwind. */
#define UART_TX_BUF_SIZE 256 /**< UART TX buffer size. */
#define UART_RX_BUF_SIZE 256 /**< UART RX buffer size. */
BLE_ITS_DEF(m_its, NRF_SDH_BLE_TOTAL_LINK_COUNT); /**< BLE NUS service instance. */
NRF_BLE_GATT_DEF(m_gatt); /**< GATT module instance. */
NRF_BLE_QWR_DEF(m_qwr); /**< Context for the Queued Write module.*/
BLE_ADVERTISING_DEF(m_advertising); /**< Advertising module instance. */
static uint8_t m_new_command_received = 0;
static uint8_t m_new_resolution, m_new_phy;
static bool m_stream_mode_active = false;
static ble_its_ble_params_info_t m_ble_params_info = {20, 50, 1, 1};
static uint16_t m_conn_handle = BLE_CONN_HANDLE_INVALID; /**< Handle of the current connection. */
static uint16_t m_ble_its_max_data_len = BLE_GATT_ATT_MTU_DEFAULT - 3; /**< Maximum length of data (in bytes) that can be transmitted to the peer by the Nordic UART service module. */
static ble_uuid_t m_adv_uuids[] = /**< Universally unique service identifier. */
{
{BLE_UUID_ITS_SERVICE, NUS_SERVICE_UUID_TYPE}
};
enum {APP_CMD_NOCOMMAND = 0, APP_CMD_SINGLE_CAPTURE, APP_CMD_START_STREAM, APP_CMD_STOP_STREAM,
APP_CMD_CHANGE_RESOLUTION, APP_CMD_CHANGE_PHY, APP_CMD_SEND_BLE_PARAMS};
bool busy_t = false;
/**@brief Function for assert macro callback.
*
* @details This function will be called in case of an assert in the SoftDevice.
*
* @warning This handler is an example only and does not fit a final product. You need to analyse
* how your product is supposed to react in case of Assert.
* @warning On assert from the SoftDevice, the system can only recover on reset.
*
* @param[in] line_num Line number of the failing ASSERT call.
* @param[in] p_file_name File name of the failing ASSERT call.
*/
void assert_nrf_callback(uint16_t line_num, const uint8_t * p_file_name)
{
app_error_handler(DEAD_BEEF, line_num, p_file_name);
}
/**@brief Function for initializing the timer module.
*/
static void timers_init(void)
{
ret_code_t err_code = app_timer_init();
APP_ERROR_CHECK(err_code);
}
/**@brief Function for the GAP initialization.
*
* @details This function will set up all the necessary GAP (Generic Access Profile) parameters of
* the device. It also sets the permissions and appearance.
*/
static void gap_params_init(void)
{
uint32_t err_code;
ble_gap_conn_params_t gap_conn_params;
ble_gap_conn_sec_mode_t sec_mode;
BLE_GAP_CONN_SEC_MODE_SET_OPEN(&sec_mode);
err_code = sd_ble_gap_device_name_set(&sec_mode,
(const uint8_t *) DEVICE_NAME,
strlen(DEVICE_NAME));
APP_ERROR_CHECK(err_code);
memset(&gap_conn_params, 0, sizeof(gap_conn_params));
gap_conn_params.min_conn_interval = MIN_CONN_INTERVAL;
gap_conn_params.max_conn_interval = MAX_CONN_INTERVAL;
gap_conn_params.slave_latency = SLAVE_LATENCY;
gap_conn_params.conn_sup_timeout = CONN_SUP_TIMEOUT;
err_code = sd_ble_gap_ppcp_set(&gap_conn_params);
APP_ERROR_CHECK(err_code);
#if 0
ble_gap_addr_t ble_address = {.addr_type = BLE_GAP_ADDR_TYPE_RANDOM_STATIC,
.addr_id_peer = 0,
.addr = {0xC3,0x11,0x99,0x33,0x44,0xFF}};
err_code = sd_ble_gap_addr_set(&ble_address);
APP_ERROR_CHECK(err_code);
#endif
}
/**@brief Function for handling Queued Write Module errors.
*
* @details A pointer to this function will be passed to each service which may need to inform the
* application about an error.
*
* @param[in] nrf_error Error code containing information about what went wrong.
*/
static void nrf_qwr_error_handler(uint32_t nrf_error)
{
APP_ERROR_HANDLER(nrf_error);
}
/**@brief Function for handling the data from the ITS Service.
*
* @details This function will process the data received from the ITS BLE Service.
*
* @param[in] p_its ITS Service structure.
* @param[in] p_data Data received.
* @param[in] length Length of the data.
*/
/**@snippet [Handling the data received over BLE] */
static void its_data_handler(ble_its_t * p_its, uint8_t const * p_data, uint16_t length)
{
switch(p_data[0])
{
// Take picture
case APP_CMD_SINGLE_CAPTURE:
case APP_CMD_SEND_BLE_PARAMS:
m_new_command_received = p_data[0];
break;
case APP_CMD_START_STREAM:
// m_stream_mode_active = true;
m_new_command_received = p_data[0];
break;
case APP_CMD_STOP_STREAM:
m_stream_mode_active = false;
m_new_command_received = p_data[0];
break;
case APP_CMD_CHANGE_RESOLUTION:
m_new_command_received = APP_CMD_CHANGE_RESOLUTION;
m_new_resolution = p_data[1];
break;
case APP_CMD_CHANGE_PHY:
m_new_command_received = APP_CMD_CHANGE_PHY;
m_new_phy = p_data[1];
break;
default:
NRF_LOG_ERROR("Unknown command!!");
break;
}
}
/**@snippet [Handling the data received over BLE] */
/**@brief Function for initializing services that will be used by the application.
*/
static void services_init(void)
{
uint32_t err_code;
ble_its_init_t its_init;
nrf_ble_qwr_init_t qwr_init = {0};
// Initialize Queued Write Module.
qwr_init.error_handler = nrf_qwr_error_handler;
err_code = nrf_ble_qwr_init(&m_qwr, &qwr_init);
APP_ERROR_CHECK(err_code);
// Initialize ITS.
memset(&its_init, 0, sizeof(its_init));
its_init.data_handler = its_data_handler;
err_code = ble_its_init(&m_its, &its_init);
APP_ERROR_CHECK(err_code);
}
/**@brief Function for handling an event from the Connection Parameters Module.
*
* @details This function will be called for all events in the Connection Parameters Module
* which are passed to the application.
*
* @note All this function does is to disconnect. This could have been done by simply setting
* the disconnect_on_fail config parameter, but instead we use the event handler
* mechanism to demonstrate its use.
*
* @param[in] p_evt Event received from the Connection Parameters Module.
*/
static void on_conn_params_evt(ble_conn_params_evt_t * p_evt)
{
switch(p_evt->evt_type)
{
case BLE_CONN_PARAMS_EVT_SUCCEEDED:
break;
case BLE_CONN_PARAMS_EVT_FAILED:
//err_code = sd_ble_gap_disconnect(m_conn_handle, BLE_HCI_CONN_INTERVAL_UNACCEPTABLE);
//APP_ERROR_CHECK(err_code);
NRF_LOG_ERROR("Conn params failed. Keep the connection anyway..");
break;
}
}
/**@brief Function for handling errors from the Connection Parameters module.
*
* @param[in] nrf_error Error code containing information about what went wrong.
*/
static void conn_params_error_handler(uint32_t nrf_error)
{
APP_ERROR_HANDLER(nrf_error);
}
/**@brief Function for initializing the Connection Parameters module.
*/
static void conn_params_init(void)
{
uint32_t err_code;
ble_conn_params_init_t cp_init;
memset(&cp_init, 0, sizeof(cp_init));
cp_init.p_conn_params = NULL;
cp_init.first_conn_params_update_delay = FIRST_CONN_PARAMS_UPDATE_DELAY;
cp_init.next_conn_params_update_delay = NEXT_CONN_PARAMS_UPDATE_DELAY;
cp_init.max_conn_params_update_count = MAX_CONN_PARAMS_UPDATE_COUNT;
cp_init.start_on_notify_cccd_handle = BLE_GATT_HANDLE_INVALID;
cp_init.disconnect_on_fail = false;
cp_init.evt_handler = on_conn_params_evt;
cp_init.error_handler = conn_params_error_handler;
err_code = ble_conn_params_init(&cp_init);
APP_ERROR_CHECK(err_code);
}
/**@brief Function for handling advertising events.
*
* @details This function will be called for advertising events which are passed to the application.
*
* @param[in] ble_adv_evt Advertising event.
*/
static void on_adv_evt(ble_adv_evt_t ble_adv_evt)
{
uint32_t err_code;
switch (ble_adv_evt)
{
case BLE_ADV_EVT_FAST:
err_code = bsp_indication_set(BSP_INDICATE_ADVERTISING);
APP_ERROR_CHECK(err_code);
break;
case BLE_ADV_EVT_IDLE:
NRF_LOG_INFO("BLE_ADV_EVT_IDLE...");
err_code = ble_advertising_start(&m_advertising, BLE_ADV_MODE_FAST);
APP_ERROR_CHECK(err_code);
break;
default:
break;
}
}
/**@brief Function for handling BLE events.
*
* @param[in] p_ble_evt Bluetooth stack event.
* @param[in] p_context Unused.
*/
static void ble_evt_handler(ble_evt_t const * p_ble_evt, void * p_context)
{
uint32_t err_code;
switch (p_ble_evt->header.evt_id)
{
case BLE_GAP_EVT_CONNECTED:
NRF_LOG_INFO("Connected");
err_code = bsp_indication_set(BSP_INDICATE_CONNECTED);
APP_ERROR_CHECK(err_code);
m_conn_handle = p_ble_evt->evt.gap_evt.conn_handle;
err_code = nrf_ble_qwr_conn_handle_assign(&m_qwr, m_conn_handle);
APP_ERROR_CHECK(err_code);
break;
case BLE_GAP_EVT_DISCONNECTED:
NRF_LOG_INFO("Disconnected");
// LED indication will be changed when advertising starts.
m_conn_handle = BLE_CONN_HANDLE_INVALID;
break;
case BLE_GAP_EVT_CONN_PARAM_UPDATE:
{
uint16_t max_con_int = p_ble_evt->evt.gap_evt.params.conn_param_update.conn_params.max_conn_interval;
uint16_t min_con_int = p_ble_evt->evt.gap_evt.params.conn_param_update.conn_params.min_conn_interval;
m_ble_params_info.con_interval = max_con_int;
ble_its_ble_params_info_send(&m_its, &m_ble_params_info);
NRF_LOG_INFO("Con params updated: CI %i, %i", (int)min_con_int, (int)max_con_int);
} break;
case BLE_GAP_EVT_PHY_UPDATE_REQUEST:
{
NRF_LOG_DEBUG("PHY update request.");
ble_gap_phys_t const phys =
{
BLE_GAP_PHY_AUTO,
BLE_GAP_PHY_AUTO,
};
err_code = sd_ble_gap_phy_update(p_ble_evt->evt.gap_evt.conn_handle, &phys);
APP_ERROR_CHECK(err_code);
} break;
case BLE_GAP_EVT_PHY_UPDATE:
m_ble_params_info.tx_phy = p_ble_evt->evt.gap_evt.params.phy_update.tx_phy;
m_ble_params_info.rx_phy = p_ble_evt->evt.gap_evt.params.phy_update.rx_phy;
ble_its_ble_params_info_send(&m_its, &m_ble_params_info);
NRF_LOG_INFO("Phy update: %i, %i", (int)m_ble_params_info.tx_phy, (int)m_ble_params_info.rx_phy);
break;
case BLE_GAP_EVT_SEC_PARAMS_REQUEST:
// Pairing not supported
err_code = sd_ble_gap_sec_params_reply(m_conn_handle, BLE_GAP_SEC_STATUS_PAIRING_NOT_SUPP, NULL, NULL);
APP_ERROR_CHECK(err_code);
break;
case BLE_GATTS_EVT_SYS_ATTR_MISSING:
// No system attributes have been stored.
err_code = sd_ble_gatts_sys_attr_set(m_conn_handle, NULL, 0, 0);
APP_ERROR_CHECK(err_code);
break;
case BLE_GATTC_EVT_TIMEOUT:
// Disconnect on GATT Client timeout event.
err_code = sd_ble_gap_disconnect(p_ble_evt->evt.gattc_evt.conn_handle,
BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION);
APP_ERROR_CHECK(err_code);
break;
case BLE_GATTS_EVT_TIMEOUT:
// Disconnect on GATT Server timeout event.
err_code = sd_ble_gap_disconnect(p_ble_evt->evt.gatts_evt.conn_handle,
BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION);
APP_ERROR_CHECK(err_code);
break;
case BLE_GATTS_EVT_HVN_TX_COMPLETE:
if (busy_t)
{
busy_t = false;
printf("S");
}
break;
default:
// No implementation needed.
//NRF_LOG_INFO("BLE event not handled by app: %i", p_ble_evt->header.evt_id);
break;
}
}
/**@brief Function for the SoftDevice initialization.
*
* @details This function initializes the SoftDevice and the BLE event interrupt.
*/
static void ble_stack_init(void)
{
ret_code_t err_code;
err_code = nrf_sdh_enable_request();
APP_ERROR_CHECK(err_code);
// Configure the BLE stack using the default settings.
// Fetch the start address of the application RAM.
uint32_t ram_start = 0;
err_code = nrf_sdh_ble_default_cfg_set(APP_BLE_CONN_CFG_TAG, &ram_start);
APP_ERROR_CHECK(err_code);
// Enable BLE stack.
err_code = nrf_sdh_ble_enable(&ram_start);
APP_ERROR_CHECK(err_code);
// Register a handler for BLE events.
NRF_SDH_BLE_OBSERVER(m_ble_observer, APP_BLE_OBSERVER_PRIO, ble_evt_handler, NULL);
}
/**@brief Function for handling events from the GATT library. */
void gatt_evt_handler(nrf_ble_gatt_t * p_gatt, nrf_ble_gatt_evt_t const * p_evt)
{
uint32_t data_length;
if ((m_conn_handle == p_evt->conn_handle) && (p_evt->evt_id == NRF_BLE_GATT_EVT_ATT_MTU_UPDATED))
{
data_length = p_evt->params.att_mtu_effective - OPCODE_LENGTH - HANDLE_LENGTH;
m_ble_its_max_data_len = data_length;
m_ble_params_info.mtu = m_ble_its_max_data_len;
NRF_LOG_INFO("gatt_event: ATT MTU is set to 0x%X (%d)", data_length, data_length);
}
else if ((m_conn_handle == p_evt->conn_handle) && (p_evt->evt_id == NRF_BLE_GATT_EVT_DATA_LENGTH_UPDATED))
{
data_length = p_evt->params.att_mtu_effective - OPCODE_LENGTH - HANDLE_LENGTH - 4;
//m_ble_its_max_data_len = data_length;
//m_ble_params_info.mtu = m_ble_its_max_data_len;
ble_its_ble_params_info_send(&m_its, &m_ble_params_info);
NRF_LOG_INFO("gatt_event: Data len is set to 0x%X (%d)", data_length, data_length);
}
//NRF_LOG_DEBUG("ATT MTU exchange completed. central 0x%x peripheral 0x%x",
// p_gatt->att_mtu_desired_central,
// p_gatt->att_mtu_desired_periph);
}
/**@brief Function for initializing the GATT library. */
void gatt_init(void)
{
ret_code_t err_code;
err_code = nrf_ble_gatt_init(&m_gatt, gatt_evt_handler);
APP_ERROR_CHECK(err_code);
err_code = nrf_ble_gatt_att_mtu_periph_set(&m_gatt, NRF_SDH_BLE_GATT_MAX_MTU_SIZE);
APP_ERROR_CHECK(err_code);
err_code = nrf_ble_gatt_data_length_set(&m_gatt, BLE_CONN_HANDLE_INVALID, NRF_SDH_BLE_GAP_DATA_LENGTH);
APP_ERROR_CHECK(err_code);
}
/**@brief Function for handling events from the BSP module.
*
* @param[in] event Event generated by button press.
*/
void bsp_event_handler(bsp_event_t event)
{
uint32_t err_code;
switch (event)
{
case BSP_EVENT_SLEEP:
break;
case BSP_EVENT_DISCONNECT:
err_code = sd_ble_gap_disconnect(m_conn_handle, BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION);
if (err_code != NRF_ERROR_INVALID_STATE)
{
APP_ERROR_CHECK(err_code);
}
break;
case BSP_EVENT_WHITELIST_OFF:
if (m_conn_handle == BLE_CONN_HANDLE_INVALID)
{
err_code = ble_advertising_restart_without_whitelist(&m_advertising);
if (err_code != NRF_ERROR_INVALID_STATE)
{
APP_ERROR_CHECK(err_code);
}
}
break;
default:
break;
}
}
/**@brief Function for handling app_uart events.
*
* @details This function will receive a single character from the app_uart module and append it to
* a string. The string will be be sent over BLE when the last character received was a
* 'new line' '\n' (hex 0x0A) or if the string has reached the maximum data length.
*/
/**@snippet [Handling the data received over UART] */
void uart_event_handle(app_uart_evt_t * p_event)
{
static uint8_t data_array[BLE_ITS_MAX_DATA_LEN];
static uint8_t index = 0;
uint32_t err_code;
switch (p_event->evt_type)
{
case APP_UART_DATA_READY:
UNUSED_VARIABLE(app_uart_get(&data_array[index]));
index++;
// if ((data_array[index - 1] == '\n') ||
// (data_array[index - 1] == '\r') ||
// (index >= m_ble_nus_max_data_len))
if ((index >= (m_ble_its_max_data_len)))
// if ((index >= (244)))
{
if (index > 1)
{
// NRF_LOG_DEBUG("Ready to send data over BLE NUS");
// NRF_LOG_HEXDUMP_DEBUG(data_array, index);
// printf("A");
// printf((char *)data_array);
// testing start...
err_code = ble_its_string_send(&m_its, data_array,m_ble_its_max_data_len);
if (err_code == NRF_ERROR_RESOURCES)
{
// Wait for BLE_GATTS_EVT_HVN_TX_COMPLETE.
busy_t = true;
break;
}
if ((err_code != NRF_ERROR_INVALID_STATE) &&
(err_code != NRF_ERROR_RESOURCES) &&
(err_code != NRF_ERROR_NOT_FOUND))
{
APP_ERROR_CHECK(err_code);
}
// testing end...
// do
// {
// uint16_t length = (uint16_t)index;
// // err_code = ble_nus_data_send(&m_nus, data_array, &length, m_conn_handle);
// err_code = ble_its_string_send(&m_its, data_array,m_ble_its_max_data_len);
//
// if ((err_code != NRF_ERROR_INVALID_STATE) &&
// (err_code != NRF_ERROR_RESOURCES) &&
// (err_code != NRF_ERROR_NOT_FOUND))
// {
// APP_ERROR_CHECK(err_code);
// }
// } while (err_code == NRF_ERROR_RESOURCES);
}
index = 0;
printf("S");
// memset(&data_array, 0, sizeof(data_array));
}
break;
case APP_UART_COMMUNICATION_ERROR:
APP_ERROR_HANDLER(p_event->data.error_communication);
break;
case APP_UART_FIFO_ERROR:
APP_ERROR_HANDLER(p_event->data.error_code);
break;
default:
break;
}
}
/**@snippet [Handling the data received over UART] */
/**@brief Function for initializing the UART module.
*/
/**@snippet [UART Initialization] */
static void uart_init(void)
{
uint32_t err_code;
app_uart_comm_params_t const comm_params =
{
RX_PIN_NUMBER,
TX_PIN_NUMBER,
RTS_PIN_NUMBER,
CTS_PIN_NUMBER,
APP_UART_FLOW_CONTROL_DISABLED,
false,
#if defined (UART_PRESENT)
// NRF_UART_BAUDRATE_115200
// NRF_UART_BAUDRATE_230400
NRF_UART_BAUDRATE_250000
// NRF_UART_BAUDRATE_460800
// NRF_UART_BAUDRATE_921600
#else
// NRF_UARTE_BAUDRATE_115200
// NRF_UARTE_BAUDRATE_230400
NRF_UARTE_BAUDRATE_250000
// NRF_UARTE_BAUDRATE_460800
// NRF_UARTE_BAUDRATE_921600
#endif
};
APP_UART_FIFO_INIT(&comm_params,
UART_RX_BUF_SIZE,
UART_TX_BUF_SIZE,
uart_event_handle,
APP_IRQ_PRIORITY_LOWEST,
err_code);
APP_ERROR_CHECK(err_code);
}
/**@snippet [UART Initialization] */
/**@brief Function for initializing the Advertising functionality.
*/
static void advertising_init(void)
{
uint32_t err_code;
ble_advertising_init_t init;
memset(&init, 0, sizeof(init));
init.advdata.name_type = BLE_ADVDATA_FULL_NAME;
init.advdata.include_appearance = false;
init.advdata.flags = BLE_GAP_ADV_FLAGS_LE_ONLY_LIMITED_DISC_MODE;
init.srdata.uuids_complete.uuid_cnt = sizeof(m_adv_uuids) / sizeof(m_adv_uuids[0]);
init.srdata.uuids_complete.p_uuids = m_adv_uuids;
init.config.ble_adv_fast_enabled = true;
init.config.ble_adv_fast_interval = APP_ADV_INTERVAL;
init.config.ble_adv_fast_timeout = APP_ADV_DURATION;
init.evt_handler = on_adv_evt;
err_code = ble_advertising_init(&m_advertising, &init);
APP_ERROR_CHECK(err_code);
ble_advertising_conn_cfg_tag_set(&m_advertising, APP_BLE_CONN_CFG_TAG);
}
/**@brief Function for initializing buttons and leds.
*
* @param[out] p_erase_bonds Will be true if the clear bonding button was pressed to wake the application up.
*/
static void buttons_leds_init(void)
{
bsp_event_t startup_event;
uint32_t err_code = bsp_init(BSP_INIT_LEDS | BSP_INIT_BUTTONS, bsp_event_handler);
APP_ERROR_CHECK(err_code);
err_code = bsp_btn_ble_init(NULL, &startup_event);
APP_ERROR_CHECK(err_code);
}
/**@brief Function for initializing the nrf log module.
*/
static void log_init(void)
{
ret_code_t err_code = NRF_LOG_INIT(NULL);
APP_ERROR_CHECK(err_code);
NRF_LOG_DEFAULT_BACKENDS_INIT();
}
/**@brief Function for handling the idle state (main loop).
*
* @details If there is no pending log operation, then sleep until next the next event occurs.
*/
static void idle_state_handle(void)
{
while(NRF_LOG_PROCESS());
sd_app_evt_wait();
}
/**@brief Function for starting advertising.
*/
static void advertising_start(void)
{
uint32_t err_code = ble_advertising_start(&m_advertising, BLE_ADV_MODE_FAST);
APP_ERROR_CHECK(err_code);
}
static void gatt_mtu_set(uint16_t att_mtu)
{
ret_code_t err_code;
err_code = nrf_ble_gatt_att_mtu_periph_set(&m_gatt, att_mtu);
APP_ERROR_CHECK(err_code);
err_code = nrf_ble_gatt_att_mtu_central_set(&m_gatt, att_mtu);
APP_ERROR_CHECK(err_code);
}
void conn_evt_len_ext_set(bool status)
{
ret_code_t err_code;
ble_opt_t opt;
memset(&opt, 0x00, sizeof(opt));
opt.common_opt.conn_evt_ext.enable = status ? 1 : 0;
err_code = sd_ble_opt_set(BLE_COMMON_OPT_CONN_EVT_EXT, &opt);
APP_ERROR_CHECK(err_code);
}
void data_len_set(uint8_t value)
{
ret_code_t err_code;
err_code = nrf_ble_gatt_data_length_set(&m_gatt, BLE_CONN_HANDLE_INVALID, value);
APP_ERROR_CHECK(err_code);
}
static void data_len_ext_set(bool status)
{
uint8_t data_length = status ? (247 + 4) : (23 + 4);
(void) nrf_ble_gatt_data_length_set(&m_gatt, BLE_CONN_HANDLE_INVALID, data_length);
}
/**@brief Application main function.
*/
int main(void)
{
uint32_t img_data_length = 0;
uint8_t img_data_buffer[255];
// Initialize.
uart_init();
log_init();
timers_init();
buttons_leds_init();
ble_stack_init();
gap_params_init();
gatt_init();
services_init();
advertising_init();
conn_params_init();
sd_power_dcdc_mode_set(NRF_POWER_DCDC_ENABLE);
// Start execution.
NRF_LOG_INFO("Debug logging for UART over RTT started.");
data_len_ext_set(true);
gatt_mtu_set(247);
conn_evt_len_ext_set(true);
advertising_start();
// Enter main loop.
for (;;)
{
uint32_t image_size;
ble_gap_phys_t gap_phys_settings;
if(m_new_command_received != APP_CMD_NOCOMMAND)
{
uint32_t new_command = m_new_command_received;
m_new_command_received = APP_CMD_NOCOMMAND;
switch(new_command)
{
case APP_CMD_SINGLE_CAPTURE:
m_new_command_received = APP_CMD_NOCOMMAND;
printf("APP_CMD_SINGLE_CAPTURE \r\n");
image_size = 1048712;
printf("Capture complete: size %i bytes\r\n", (int)(image_size));
ble_its_img_info_t image_info;
image_info.file_size_bytes = image_size;
ble_its_img_info_send(&m_its, &image_info);
// Initiate sending process
// start_sending_data(&m_its,m_ble_its_max_data_len);
printf("S");
break;
case APP_CMD_START_STREAM:
NRF_LOG_INFO("Stream mode enabled");
break;
case APP_CMD_STOP_STREAM:
NRF_LOG_INFO("Stream mode disabled");
break;
case APP_CMD_CHANGE_RESOLUTION:
NRF_LOG_INFO("Change resolution to mode: %i", (int)m_new_resolution);
break;
case APP_CMD_CHANGE_PHY:
NRF_LOG_INFO("Attempting to change phy.");
gap_phys_settings.tx_phys = (m_new_phy == 0 ? BLE_GAP_PHY_1MBPS : BLE_GAP_PHY_2MBPS);
gap_phys_settings.rx_phys = (m_new_phy == 0 ? BLE_GAP_PHY_1MBPS : BLE_GAP_PHY_2MBPS);
sd_ble_gap_phy_update(m_its.conn_handle, &gap_phys_settings);
break;
case APP_CMD_SEND_BLE_PARAMS:
ble_its_ble_params_info_send(&m_its, &m_ble_params_info);
break;
default:
break;
}
}
if(m_new_command_received == APP_CMD_NOCOMMAND)
{
idle_state_handle();
}
}
}
/**
* @}
*/
sdk_config.h file (in other files there is no error.. )
https://drive.google.com/open?id=19ca1ZeuNQ383CDy4dgYxmrEJ_xjBhlns
Please help me...
