In my code, the parameter definitions like this :
#define APP_ADV_INTERVAL 300 /**< The advertising interval (in units of 0.625 ms. This value corresponds to 187.5 ms). */ #define APP_ADV_DURATION 18000 /**< The advertising duration (180 seconds) in units of 10 milliseconds. */ #define APP_BLE_OBSERVER_PRIO 3 /**< Application's BLE observer priority. You shouldn't need to modify this value. */ #define APP_BLE_CONN_CFG_TAG 1 /**< A tag identifying the SoftDevice BLE configuration. */ #define MIN_CONN_INTERVAL MSEC_TO_UNITS(100, UNIT_1_25_MS) /**< Minimum acceptable connection interval (0.1 seconds). */ #define MAX_CONN_INTERVAL MSEC_TO_UNITS(200, UNIT_1_25_MS) /**< Maximum acceptable connection interval (0.2 second). */ #define SLAVE_LATENCY 0 /**< Slave latency. */ #define CONN_SUP_TIMEOUT MSEC_TO_UNITS(4000, UNIT_10_MS) /**< Connection supervisory timeout (4 seconds). */ #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 SEC_PARAM_BOND 1 /**< Perform bonding. */ #define SEC_PARAM_MITM 0 /**< Man In The Middle protection not required. */ #define SEC_PARAM_LESC 0 /**< LE Secure Connections not enabled. */ #define SEC_PARAM_KEYPRESS 0 /**< Keypress notifications not enabled. */ #define SEC_PARAM_IO_CAPABILITIES BLE_GAP_IO_CAPS_NONE /**< No I/O capabilities. */ #define SEC_PARAM_OOB 0 /**< Out Of Band data not available. */ #define SEC_PARAM_MIN_KEY_SIZE 7 /**< Minimum encryption key size. */ #define SEC_PARAM_MAX_KEY_SIZE 16 /**< Maximum encryption key size. */ #define DEAD_BEEF 0xDEADBEEF /**< Value used as error code on stack dump, can be used to identify stack location on stack unwind. */ #define BATTERY_TIMER_INTERVAL APP_TIMER_TICKS(60000) /**< Battery timer interval (60000 ms). */ #define SAADC_TIMER_INTERVAL APP_TIMER_TICKS(200) /**< Saadc sampling timer interval (200 ms). */ #define ADC_RESULT_IN_MILLI_VOLTS(ADC_RESULT) (ADC_RESULT * 0.87890625) /**< Function used to convert the saadc resault to a voltage value. */ #define POTENTIO_ANALOG_PIN NRF_SAADC_INPUT_AIN1 /**< Potentiometer analog pin. */ #define SAMPLES_IN_BUFFER 2 /**< Number of saadc samples that will be stored in a buffer before the converstion starts. */ static nrf_saadc_value_t m_buffer_pool[2][SAMPLES_IN_BUFFER]; /**< Number of saadc pools for holding the saadc samples. A 2nd pool would hold the next samples while the precedent ones gets converted. */ static uint32_t m_adc_evt_counter;
In my application, I used SAADC in SEGGER to convert my analog sensor input to digital and then i want to sent my data to pc via BLE. I find a code and used as an axample. I shared some definitions for saadc time and ble parameters from this code. I want to increase my sample number in my saadc block. Sampling frequency should be at least 2kHz. While i increase the sample number or decrease the app timer ticks, i had connection problems (device couldn't connect with pc via BLE. How can i change and define the timer and BLE parameters properly?
Thanks for your help.
