Hello,
I am using nrf51822/SDK 12.3/sd 130.
An error occurred while implementing nus_c using multi-role example.
Error 7 occurs in sd_ble_gap_conn_param_update() frequently.
The connection parameters in the nus and nus_c examples are used identically.
I attach the error log screen.
The log screen below is for no errors.
HRS log has not been modified.
I ask which parts should be reviewed first.
Sure I can attach my project code.
Thanks.
// in nus
#define MIN_CONN_INTERVAL MSEC_TO_UNITS(20, UNIT_1_25_MS) /**< Minimum acceptable connection interval (20 ms), Connection interval uses 1.25 ms units. */
#define MAX_CONN_INTERVAL MSEC_TO_UNITS(75, 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, APP_TIMER_PRESCALER) /**< 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, APP_TIMER_PRESCALER) /**< 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. */
// in nus_c
#define MIN_CONNECTION_INTERVAL (uint16_t) MSEC_TO_UNITS(20, UNIT_1_25_MS) /**< Determines minimum connection interval in milliseconds. */
#define MAX_CONNECTION_INTERVAL (uint16_t) MSEC_TO_UNITS(75, UNIT_1_25_MS) /**< Determines maximum connection interval in milliseconds. */
#define SLAVE_LATENCY 0 /**< Determines slave latency in terms of connection events. */
#define SUPERVISION_TIMEOUT (uint16_t) MSEC_TO_UNITS(4000, UNIT_10_MS) /** < Determines supervision time-out in units of 10 milliseconds. */
