Відео

i am using minicom and says the serial i device that i want to use is locked

Thanks for this wonderful video. I am using Nordic DVK. How i can print or see data from sensor on serial port? I connected the custom board with DVK using JTAG pins(Same as for programming). Can you help me with it plz? Thanks

Hi! Can you tell me how to change the nRF channel to change the frequency? Thank you! :)

hey, after installing segger, I'm not getting license for non-commercial use

hello, sir. I love your tutorials. I wondered if the tWI should have a timeout since it keeps waiting forever. Thanks, Ephraim

You missed the part about installing pip...

Hi, how can we add new components in the CMSIS configuration like i want to add UART or PWM in the blinky example of PCA-10040e, because other examples don't have the PCA-10040e example.

nice work buddy.

Why can't I see the output in PuTTY? I think it might need some specific settings. Can you help me?

Why can't I see the output in PuTTY? I think it might need some specific settings. Can you help me?

Are you using external JLink or the on board Jlink for the nrf52532 DK? Can you show us how to set it up?

Can we use VScode as IDE for this entire nrf52 SDK development series?

Thanks sumair i have been following your tutorial for some time now and thanks have been able to develop my BLE project. Please can i program the nrf52 dk with an external jlink. Somethings wrong with my onboard jlink now

Great work.!Thank you very much.

#include <stdbool.h> #include <stdint.h> #include <string.h> #include <nrf_log.h> #include <nrf_log_ctrl.h> #include <nrf_log_default_backends.h> #include "app_timer.h" #include <bsp_btn_ble.h> #include "nrf_pwr_mgmt.h" //include nrf softdevices library then we enable the soft devices in CMSIS #include "nrf_sdh.h" #include "nrf_sdh_ble.h" #include "nrf_sdh_soc.h" #include "nrf_ble_qwr.h" #include "nrf_ble_gatt.h" #include "ble_advdata.h" #include "ble_advertising.h" #include "ble_conn_params.h" #define APP_BLE_CONN_CFG_TAG 1 #define APP_BLE_OBSERVER_PRIO 3 #define DEVICE_NAME "Sam_BT" #define MIN_CONN_INTERVAL MSEC_TO_UNITS(100, UNIT_1_25_MS) #define MAX_CONN_INTERVAL MSEC_TO_UNITS(200, UNIT_1_25_MS) #define SLAVE_LATENCY 0 #define CONN_SUP_TIMEOUT MSEC_TO_UNITS(2000, UNIT_10_MS) #define FIRST_CONN_PARMS_UPDATE_DELAY APP_TIMER_TICKS(5000) #define NEXT_CONN_PARAMS_UPDATE_DELAY APP_TIMER_TICKS(30000) #define MAX_CONN_PARAMS_UPDATE_COUNT 3 #define APP_ADV_INTERVAL 300 #define APP_ADV_DURATION 0 NRF_BLE_QWR_DEF(m_qwr); NRF_BLE_GATT_DEF(m_gatt); BLE_ADVERTISING_DEF(m_advertising); static uint16_t m_conn_handle = BLE_CONN_HANDLE_INVALID; /*9.1 error handler for queue writer */ static void nrf_qwr_error_handler(uint32_t nrf_error) { APP_ERROR_HANDLER(nrf_error); } /*9. SERVICES initialisation*/ static void services_init(void) { ret_code_t err_code; nrf_ble_qwr_init_t qwr_init = {0}; qwr_init.error_handler = nrf_qwr_error_handler; err_code = nrf_ble_qwr_init(&m_qwr, &qwr_init); APP_ERROR_CHECK(err_code); } /* 10.2 create an error handler for conn params update */ static void on_conn_params_error_handler(uint32_t nrf_error) { APP_ERROR_HANDLER(nrf_error); } /*10.1 creat an event handler for connection parameters update */ static void on_conn_params_evt(ble_conn_params_evt_t * p_evt) { ret_code_t err_code; if (p_evt->evt_type == BLE_CONN_PARAMS_EVT_FAILED); { err_code = sd_ble_gap_disconnect(m_conn_handle, BLE_HCI_CONN_INTERVAL_UNACCEPTABLE); APP_ERROR_CHECK(err_code); } if(p_evt->evt_type == BLE_CONN_PARAMS_EVT_SUCCEEDED) { } } /*10. create a function for setting up the connection parameters*/ static void conn_params_init(void) { ret_code_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_PARMS_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.error_handler = on_conn_params_error_handler; cp_init.evt_handler = on_conn_params_evt; err_code = ble_conn_params_init(&cp_init); APP_ERROR_CHECK(err_code); } /*8.1. create Advertising event handler */ static void on_adv_evt(ble_adv_evt_t ble_adv_evt) { ret_code_t err_code; switch (ble_adv_evt) { case BLE_ADV_EVT_FAST : NRF_LOG_INFO("FAST ADVERTISING"); err_code = bsp_indication_set(BSP_INDICATE_ADVERTISING); APP_ERROR_CHECK(err_code); break; case BLE_ADV_EVT_IDLE: err_code = bsp_indication_set(BSP_INDICATE_IDLE); APP_ERROR_CHECK(err_code); break; default: break; } } /*8. Advertising initialisation*/ static void advertising_init(void) { ret_code_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 = true; init.advdata.flags = BLE_GAP_ADV_FLAGS_LE_ONLY_GENERAL_DISC_MODE; 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); } /*6. gap initialisation*/ static void gap_params_init(void) { ret_code_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); } /*7. GATT initialisation*/ static void gatt_init(void) { ret_code_t err_code = nrf_ble_gatt_init(&m_gatt, NULL); APP_ERROR_CHECK(err_code); } /* 5.1 BLE EVENT HANDLEr */ static void ble_evt_handler(ble_evt_t const * p_ble_evt, void * p_context) { ret_code_t err_code = NRF_SUCCESS; switch (p_ble_evt->header.evt_id) { case BLE_GAP_EVT_DISCONNECTED: NRF_LOG_INFO("device is disconnected!!"); break; case BLE_GAP_EVT_CONNECTED: NRF_LOG_INFO("device is 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_PHY_UPDATE_REQUEST: NRF_LOG_DEBUG("phy update request"); ble_gap_phys_t const phys = { .rx_phys = BLE_GAP_PHY_AUTO, .tx_phys = 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; } } /* 5. Init BLE STACK softdevices*/ static void ble_stack_init() { ret_code_t err_code; err_code = nrf_sdh_enable_request(); APP_ERROR_CHECK(err_code); uint32_t ram_start = 0; //store the starting address of RAM required by the SoftDevice to manage memory err_code = nrf_sdh_ble_default_cfg_set(APP_BLE_CONN_CFG_TAG, &ram_start); APP_ERROR_CHECK(err_code); err_code = nrf_sdh_ble_enable(&ram_start); APP_ERROR_CHECK(err_code); } /* 4. Init Power Management */ static void power_management_init(void) { ret_code_t err_code = nrf_pwr_mgmt_init(); APP_ERROR_CHECK(err_code); } /*3. Init BSP(leds)*/ static void leds_init(void) { ret_code_t err_code = bsp_init(BSP_INIT_LEDS, NULL); APP_ERROR_CHECK(err_code); } /*2. Init timer app*/ static void timers_init(void) { ret_code_t err_code = app_timer_init(); APP_ERROR_CHECK(err_code); } /*1.initialize the logger*/ static void log_init() { ret_code_t err_code = NRF_LOG_INIT(NULL); APP_ERROR_CHECK(err_code); NRF_LOG_DEFAULT_BACKENDS_INIT(); } /* step 4.1: idle state handle (sleep mode after sending the data ) */ static void idle_state_handle(void) { if(NRF_LOG_PROCESS() == false) { nrf_pwr_mgmt_run(); } } /* 11 creat a function which will start the advertisement */ static void advertising_start(void) { ret_code_t err_code = ble_advertising_start(&m_advertising, BLE_ADV_EVT_FAST); APP_ERROR_CHECK(err_code); } int main(void) { // Initialize. log_init(); timers_init(); leds_init(); power_management_init(); ble_stack_init(); gap_params_init(); gatt_init(); advertising_init(); services_init(); conn_params_init(); // Start execution. NRF_LOG_INFO("ble base application started ..."); advertising_start(); // Enter main loop. for (;;) { idle_state_handle(); } }

#include <stdbool.h> #include <stdint.h> #include <string.h> #include <nrf_log.h> #include <nrf_log_ctrl.h> #include <nrf_log_default_backends.h> #include "app_timer.h" #include <bsp_btn_ble.h> #include "nrf_pwr_mgmt.h" //include nrf softdevices library then we enable the soft devices in CMSIS #include "nrf_sdh.h" #include "nrf_sdh_ble.h" #include "nrf_sdh_soc.h" #include "nrf_ble_qwr.h" #include "nrf_ble_gatt.h" #include "ble_advdata.h" #include "ble_advertising.h" #include "ble_conn_params.h" #define APP_BLE_CONN_CFG_TAG 1 #define APP_BLE_OBSERVER_PRIO 3 #define DEVICE_NAME "Sam_BT" #define MIN_CONN_INTERVAL MSEC_TO_UNITS(100, UNIT_1_25_MS) #define MAX_CONN_INTERVAL MSEC_TO_UNITS(200, UNIT_1_25_MS) #define SLAVE_LATENCY 0 #define CONN_SUP_TIMEOUT MSEC_TO_UNITS(2000, UNIT_10_MS) #define FIRST_CONN_PARMS_UPDATE_DELAY APP_TIMER_TICKS(5000) #define NEXT_CONN_PARAMS_UPDATE_DELAY APP_TIMER_TICKS(30000) #define MAX_CONN_PARAMS_UPDATE_COUNT 3 #define APP_ADV_INTERVAL 300 #define APP_ADV_DURATION 0 NRF_BLE_QWR_DEF(m_qwr); NRF_BLE_GATT_DEF(m_gatt); BLE_ADVERTISING_DEF(m_advertising); static uint16_t m_conn_handle = BLE_CONN_HANDLE_INVALID; /*9.1 error handler for queue writer */ static void nrf_qwr_error_handler(uint32_t nrf_error) { APP_ERROR_HANDLER(nrf_error); } /*9. SERVICES initialisation*/ static void services_init(void) { ret_code_t err_code; nrf_ble_qwr_init_t qwr_init = {0}; qwr_init.error_handler = nrf_qwr_error_handler; err_code = nrf_ble_qwr_init(&m_qwr, &qwr_init); APP_ERROR_CHECK(err_code); } /* 10.2 create an error handler for conn params update */ static void on_conn_params_error_handler(uint32_t nrf_error) { APP_ERROR_HANDLER(nrf_error); } /*10.1 creat an event handler for connection parameters update */ static void on_conn_params_evt(ble_conn_params_evt_t * p_evt) { ret_code_t err_code; if (p_evt->evt_type == BLE_CONN_PARAMS_EVT_FAILED); { err_code = sd_ble_gap_disconnect(m_conn_handle, BLE_HCI_CONN_INTERVAL_UNACCEPTABLE); APP_ERROR_CHECK(err_code); } if(p_evt->evt_type == BLE_CONN_PARAMS_EVT_SUCCEEDED) { } } /*10. create a function for setting up the connection parameters*/ static void conn_params_init(void) { ret_code_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_PARMS_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.error_handler = on_conn_params_error_handler; cp_init.evt_handler = on_conn_params_evt; err_code = ble_conn_params_init(&cp_init); APP_ERROR_CHECK(err_code); } /*8.1. create Advertising event handler */ static void on_adv_evt(ble_adv_evt_t ble_adv_evt) { ret_code_t err_code; switch (ble_adv_evt) { case BLE_ADV_EVT_FAST : NRF_LOG_INFO("FAST ADVERTISING"); err_code = bsp_indication_set(BSP_INDICATE_ADVERTISING); APP_ERROR_CHECK(err_code); break; case BLE_ADV_EVT_IDLE: err_code = bsp_indication_set(BSP_INDICATE_IDLE); APP_ERROR_CHECK(err_code); break; default: break; } } /*8. Advertising initialisation*/ static void advertising_init(void) { ret_code_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 = true; init.advdata.flags = BLE_GAP_ADV_FLAGS_LE_ONLY_GENERAL_DISC_MODE; 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); } /*6. gap initialisation*/ static void gap_params_init(void) { ret_code_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); } /*7. GATT initialisation*/ static void gatt_init(void) { ret_code_t err_code = nrf_ble_gatt_init(&m_gatt, NULL); APP_ERROR_CHECK(err_code); } /* 5.1 BLE EVENT HANDLEr */ static void ble_evt_handler(ble_evt_t const * p_ble_evt, void * p_context) { ret_code_t err_code = NRF_SUCCESS; switch (p_ble_evt->header.evt_id) { case BLE_GAP_EVT_DISCONNECTED: NRF_LOG_INFO("device is disconnected!!"); break; case BLE_GAP_EVT_CONNECTED: NRF_LOG_INFO("device is 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_PHY_UPDATE_REQUEST: NRF_LOG_DEBUG("phy update request"); ble_gap_phys_t const phys = { .rx_phys = BLE_GAP_PHY_AUTO, .tx_phys = 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; } } /* 5. Init BLE STACK softdevices*/ static void ble_stack_init() { ret_code_t err_code; err_code = nrf_sdh_enable_request(); APP_ERROR_CHECK(err_code); uint32_t ram_start = 0; //store the starting address of RAM required by the SoftDevice to manage memory err_code = nrf_sdh_ble_default_cfg_set(APP_BLE_CONN_CFG_TAG, &ram_start); APP_ERROR_CHECK(err_code); err_code = nrf_sdh_ble_enable(&ram_start); APP_ERROR_CHECK(err_code); } /* 4. Init Power Management */ static void power_management_init(void) { ret_code_t err_code = nrf_pwr_mgmt_init(); APP_ERROR_CHECK(err_code); } /*3. Init BSP(leds)*/ static void leds_init(void) { ret_code_t err_code = bsp_init(BSP_INIT_LEDS, NULL); APP_ERROR_CHECK(err_code); } /*2. Init timer app*/ static void timers_init(void) { ret_code_t err_code = app_timer_init(); APP_ERROR_CHECK(err_code); } /*1.initialize the logger*/ static void log_init() { ret_code_t err_code = NRF_LOG_INIT(NULL); APP_ERROR_CHECK(err_code); NRF_LOG_DEFAULT_BACKENDS_INIT(); } /* step 4.1: idle state handle (sleep mode after sending the data ) */ static void idle_state_handle(void) { if(NRF_LOG_PROCESS() == false) { nrf_pwr_mgmt_run(); } } /* 11 creat a function which will start the advertisement */ static void advertising_start(void) { ret_code_t err_code = ble_advertising_start(&m_advertising, BLE_ADV_EVT_FAST); APP_ERROR_CHECK(err_code); } int main(void) { // Initialize. log_init(); timers_init(); leds_init(); power_management_init(); ble_stack_init(); gap_params_init(); gatt_init(); advertising_init(); services_init(); conn_params_init(); // Start execution. NRF_LOG_INFO("ble base application started ..."); advertising_start(); // Enter main loop. for (;;) { idle_state_handle(); } }

Very good and detailed explanation. but do we need Queued Writer of for broadcasting and peripheral that does not allow write function ?

why do i get NRF_ERROR_DATA_SIZE ?

I have issue with nrf52840, when I connect with my mobile Nrf Connect, the nrf console on desktop shows "connected" but the phone is still trying until it get disconnected. I even tried your code but same result

in your tutorial you keep mentioning about interrupt. Does the event trigger interrupt?. If it does this means it still uses cpu time.

Thanks, good video. But at 16:24 you write that the link to the official spes to BLE 5.1 is in the video description. But it is not in the description.

Hello friend, I noticed that the timer in this tutorial is faster compared to the program without using ppi and gpioe. What could be the reason?

Actually, what's the point to use an interrupt instead of a variable? Is there any event_handler triggered at some point? Does it compare its counter to a channel value like, say, NRF_TIMER_CC_CHANNEL0 and then reset to 0 and calls the event? Can we manually trigger the event function passed as the handler? Sorry, but I don't really get the interest of such a thing. Is it just a counter and doesn't do anything else? Thanks for any clarification.

Good job!

I am glad to see this video.

Can I get the presentation file ?

Well after 4 years I am here, because I could not download sdk toolchain in vscode [ which crashes while cloning from github] so that made me to use legacy nrf5 sdk v17, I encountered many problems. I opened twi_sensor example and saw that the sdk_config.h of that example have configurations which was not available in config/nrf52832/sdk_config.h , seems that Nordic Semi have many shortcomings in providing software tools.

Finally... I am here.

hello when build the program i am getting error as Building ‘ble_app_blinky_pca10056_s140’ from solution ‘ble_app_blinky_pca10056_s140’ in configuration ‘Debug’ 3> Linking ble_app_blinky_pca10056_s140.elf 3> C:/Program Files/SEGGER/SEGGER Embedded Studio 8.10b/gcc/arm-none-eabi/bin/ld: Output/Debug/Obj/ble_app_blinky_pca10056_s140/ses_startup_nrf_common.o: in function `InitializeUserMemorySections': please guide me to solve this bug thank you

Can you make the video tutorials using nrf connect sdk

In my case, printf() always does not work. I don't see anything in the PUTTY. But when you used NRF_LOG_INFO, I could see the output. Do you know how I can fix to see printf()?

Love the functions where you don’t have to configure the tedious stuff like direction, pull-up resistors, and enables. Very Arduino like with that.

If I do a right click on the sdk_config.h, I cannot see the CMSIS_Configurator. Do you know a solution for this? Thanks

😊❤❤

Thank you so much. At first, It didn't work in my special board. the reason is that I connected the tx rx pins to different gpio legs. I understood it when I saw the pin configuration from boards.h in your other videos. I wish you're going to heaven if you believe in :)

Which J Link are you using ? Can you share the link of the same ?

thank you for this!

Great videos. Too bad you stop posting them, cuz the full course is expensive

Hi, There is something wrong and misleading in your slides. Standard services have 16-bits UUIDs. You say: they have 4 bytes, it is wrong. 16-bit = 2bytes. Thank you for your sharing.

Great series! Really wanted to know how to get BLE Central Mode to work on nRF52 though

too much complex for a beginner to understand

will this tutorial be suitable for nRF7002 ??? pl Guide

This is amazing. I will support you on patreon once I get my paycheck in a few days. With a guide like this I can work on my bachelor's thesis on capturing BLE signals in test center in my university. I absolutely love your videos.

what does it mean by cheat shit? How do i try it? I am only a beginner. please help.

How can this battery level be updated at runtime ?

Thank you very much for what you told. I have a question. I dont use any nRF SDK but I have nRF52832 chip in my card. I try to program it from SWD port with J-link but I couldn't. Im open to your advice.

Did you use any button debouncing?

if you got an error like ".text is larger than specified size" and ".rodata is larger than specified size" then navigate to ./pca10040/blank/ses/ inside of your project directory, open flash_placement.xml file, find folowing lines: <ProgramSection alignment="4" load="Yes" name=".text" sizeof="0x4"/> <ProgramSection alignment="4" load="Yes" name=".rodata" sizeof="0x4" /> and remove sizeof="0x4" in both cases. this error occures in newer versions of ses but the solution above fixed it in my case

This is the best tutorial on how to install the nRF sniffer plugin for Wireshark - thank you!

Hi, i have a doubt. I am programming two nrf52840 devices. One of them acts as advertiser and the others one acts as scanner. But my question is: Could I send a message in form of advertisement from the scanner to the advertiser without connecting them? I mean, using a directed adv from scanner and them receive It in the advertiser? But, with this approach, I would enable the advertiser and the scanner simultanously, and I do note think this is possible...