cellphone can connect to nrf52 DK, but show GATT_ERROR 133 (0x85) when I connect to my customer board

Question

Hi, 
 I start developing with ble_app_template and DK 
 I combine uart spi twi into it 
 It can connect to my phone(nRF Connect APP)and work fine on DK 
 However when i use the same code on my customer board ,i cant connect to my phone,only uart spi twi work fine 
 On my phone,I can see the log give me GATT_ERROR 133 (0x85) everytime I press connect 
 In rtt viewer, i can see my program go to BLE_GAP_EVT_CONNECTED event,and the next second it go to BLE_GAP_EVT_DISCONNECTED 
 between the connected and disconnect ,BLE_ADV_EVT_FAST event in on_adv_evt(ble_adv_evt_t ble_adv_evt) also appear 
 
 I also found out that i cant even connect to my phone with the origin ble_app_template! 
 
 this is my schematic of nrf52832 
 p0.05, p0.06,p0.07,p0.08 for external spi flash : mx25v8006e p0.11 for uart sensor(read only) p0.18,p.019 for twi IC :ds3231 p0.13 for a led indicator p0.17 for a button interrupt and my board below 
 thanks

Simonr · Accepted Answer

Hi What module is this? It seems like there's no external LF clock in your design (should be connected to P0.00 and P0.01), which is a rather common reason for this error to occur as that is the clock all our examples use by default. Please edit the following defines in your sdk_config.h file to these values in order to use the internal LF RC oscillator instead of the one that is not present in your design. // //========================================================== // Clock - SoftDevice clock configuration //========================================================== // NRF_SDH_CLOCK_LF_SRC - SoftDevice clock source. // <0=> NRF_CLOCK_LF_SRC_RC // <1=> NRF_CLOCK_LF_SRC_XTAL // <2=> NRF_CLOCK_LF_SRC_SYNTH #ifndef NRF_SDH_CLOCK_LF_SRC #define NRF_SDH_CLOCK_LF_SRC 0 #endif // NRF_SDH_CLOCK_LF_RC_CTIV - SoftDevice calibration timer interval. #ifndef NRF_SDH_CLOCK_LF_RC_CTIV #define NRF_SDH_CLOCK_LF_RC_CTIV 16 #endif // NRF_SDH_CLOCK_LF_RC_TEMP_CTIV - SoftDevice calibration timer interval under constant temperature. // How often (in number of calibration intervals) the RC oscillator shall be calibrated // if the temperature has not changed. #ifndef NRF_SDH_CLOCK_LF_RC_TEMP_CTIV #define NRF_SDH_CLOCK_LF_RC_TEMP_CTIV 2 #endif // NRF_SDH_CLOCK_LF_ACCURACY - External clock accuracy used in the LL to compute timing. // <0=> NRF_CLOCK_LF_ACCURACY_250_PPM // <1=> NRF_CLOCK_LF_ACCURACY_500_PPM // <2=> NRF_CLOCK_LF_ACCURACY_150_PPM // <3=> NRF_CLOCK_LF_ACCURACY_100_PPM // <4=> NRF_CLOCK_LF_ACCURACY_75_PPM // <5=> NRF_CLOCK_LF_ACCURACY_50_PPM // <6=> NRF_CLOCK_LF_ACCURACY_30_PPM // <7=> NRF_CLOCK_LF_ACCURACY_20_PPM // <8=> NRF_CLOCK_LF_ACCURACY_10_PPM // <9=> NRF_CLOCK_LF_ACCURACY_5_PPM // <10=> NRF_CLOCK_LF_ACCURACY_2_PPM // <11=> NRF_CLOCK_LF_ACCURACY_1_PPM #ifndef NRF_SDH_CLOCK_LF_ACCURACY #define NRF_SDH_CLOCK_LF_ACCURACY 1 #endif Best regards, Simon

cellphone can connect to nrf52 DK, but show GATT_ERROR 133 (0x85) when I connect to my customer board

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