Nrf52832 connect BMX055 with i2c,auto restart problem

Question

Hi,I used Nrf52832 connect BMX055 with i2c, I use sdk nRF52_SDK_11.0.0 example examples\ble_peripheral\ble_app_cscs and add my code to read the BMX055,but when it work a short miniutes the board will restart,when i comment the MAG init and read part ,only read accel and prg.. it can work well ,can anyone help me ? 
 
 The following is my code 
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 //main.c /**@brief Function for application main entry. */ int main(void) { uint32_t err_code; bool erase_bonds; 
 // Initialize. app_trace_init(); timers_init(); // buttons_leds_init(&erase_bonds); ble_stack_init(); device_manager_init(erase_bonds); gap_params_init(); advertising_init(); services_init(); sensor_simulator_init(); conn_params_init(); 
 // Start execution. application_timers_start(); err_code = ble_advertising_start(BLE_ADV_MODE_FAST); // APP_ERROR_CHECK(err_code); 
 init_base(); beep(); success_blink(); Twi_init(); send_str("Start
"); int8_t rslt = 0; rslt =init_mag(); if(rslt!=0){ send_str("init_mag error
"); } uint8_t reg = 0; // ret_code_t err_code; rslt =init_accel(); if(rslt!=0){ send_str("init_accel error
"); } rslt =init_gyr(); if(rslt!=0){ send_str("init_gyr error
"); } nrf_delay_ms(200); send_str("
begin send data
"); // Enter main loop. for (;; ) { power_manage(); // beep(); success_blink(); /* Start transaction with a slave with the specified address. */ send_str("step1
"); // rslt = read_mag_data(); if(rslt!=0){ send_str("read mag error
"); } send_str("step2
"); rslt = read_accel(); if(rslt!=0){ send_str("read accel error
"); } send_str("step3
"); rslt = read_gyr(); if(rslt!=0){ send_str("read_gyr error
"); } send_str("step4
"); } } 
 /** * @} */ 
 
 ============================ 
 //other xxx.c 
 /* **************************************************************************** * Copyright (C) 2015 - 2016 Bosch Sensortec GmbH * * bmm050_support.c * Date: 2016/03/17 * Revision: 1.0.6 $ * * Usage: Sensor Driver support file for BMM050 and BMM150 sensor * **************************************************************************** * License: * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * Neither the name of the copyright holder nor the names of the * contributors may be used to endorse or promote products derived from * this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER * OR CONTRIBUTORS BE LIABLE FOR ANY * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, * OR CONSEQUENTIAL DAMAGES(INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN * ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE * * The information provided is believed to be accurate and reliable. * The copyright holder assumes no responsibility * for the consequences of use * of such information nor for any infringement of patents or * other rights of third parties which may result from its use. * No license is granted by implication or otherwise under any patent or * patent rights of the copyright holder. **************************************************************************/ 
 /*---------------------------------------------------------------------------*/ /* Includes*/ /*---------------------------------------------------------------------------*/ #include "app_util_platform.h" #include "nrf_delay.h" #include "nrf_drv_twi.h" #include "bmm050_support.h" #include "up_uart.h" 
 /*----------------------------------------------------------------------------*/ /* The following functions are used for reading and writing of * sensor data using I2C or SPI communication *----------------------------------------------------------------------------*/ #define BMM050_API /* TWI instance ID. */ #define TWI_INSTANCE_ID 0 #define IIC_SCL_PIN 4 #define IIC_SDA_PIN 3 /* TWI instance. */ //static const nrf_drv_twi_t m_twi = NRF_DRV_TWI_INSTANCE(TWI_INSTANCE_ID); static const nrf_drv_twi_t m_twi_mma_7660 = NRF_DRV_TWI_INSTANCE(0); AGG_DATA_ST agg_data; u8 config[2]; u8 temp_data[6]={0}; u8 data[6]={0}; static volatile bool m_xfer_done = true; ret_code_t r_code; /*----------------------------------------------------------------------------* * struct bmm050_t parameters can be accessed by using bmm050 * bmm050_t having the following parameters * Bus write function pointer: BMM050_WR_FUNC_PTR * Bus read function pointer: BMM050_RD_FUNC_PTR * Burst read function pointer: BMM050_BRD_FUNC_PTR * Delay function pointer: delay_msec * I2C address: dev_addr * Chip id of the sensor: chip_id *---------------------------------------------------------------------------*/ void BEGIN_TX(){ } void END_TX(); void log_num(uint8_t num,uint8_t *str){ send_num(num,str); } void log(uint8_t *str){ send_str(str); } void Twi_init(void) { ret_code_t err_code; const nrf_drv_twi_config_t twi_mma_7660_config = { .scl = IIC_SCL_PIN, .sda = IIC_SDA_PIN, // .frequency = TWI_FREQUENCY_FREQUENCY_K100, .frequency = TWI_FREQUENCY_FREQUENCY_K400, //.interrupt_priority = APP_IRQ_PRIORITY_HIGH .interrupt_priority = APP_IRQ_PRIORITY_LOW }; err_code = nrf_drv_twi_init(&m_twi_mma_7660, &twi_mma_7660_config, NULL, NULL); log_num(err_code,"twi_init_err="); //APP_ERROR_CHECK(err_code); nrf_drv_twi_enable(&m_twi_mma_7660); send_str("nrf_drv_twi_enabled
"); } 
 s8 init_mag(){ u8 dev_addr = 0x10; // Select Mag register(0x4B) // Soft reset(0x83) config[0] = 0x4B; config[1] = 0x83; bool flag = false; r_code = nrf_drv_twi_tx(&m_twi_mma_7660, dev_addr, config,2,flag); send_num(r_code,"rslt0m="); r_code += nrf_drv_twi_rx(&m_twi_mma_7660, dev_addr, temp_data, 2); // Select Mag register(0x4C) // Normal Mode, ODR = 10 Hz(0x00) config[0] = 0x4C; config[1] = 0x00; send_num(r_code,"rslt1m="); r_code += nrf_drv_twi_tx(&m_twi_mma_7660, dev_addr, config,2, flag); send_num(r_code,"rslt2="); // Select Mag register(0x4E) // X, Y, Z-Axis enabled(0x84) config[0] = 0x4E; config[1] = 0x84; r_code += nrf_drv_twi_tx(&m_twi_mma_7660, dev_addr, config,2, flag); send_num(r_code,"rslt3="); // Select Mag register(0x51) // No. of Repetitions for X-Y Axis = 9(0x04) config[0] = 0x51; config[1] = 0x04; r_code += nrf_drv_twi_tx(&m_twi_mma_7660, dev_addr, config,2, flag); send_num(r_code,"rslt4="); // Select Mag register(0x52) // No. of Repetitions for Z-Axis = 15(0x0F) config[0] = 0x52; config[1] = 0x0F; r_code += nrf_drv_twi_tx(&m_twi_mma_7660, dev_addr, config,2, flag); send_num(r_code,"rslt5="); nrf_delay_ms(2); return r_code; } s8 read_mag_data(){ u8 dev_addr = 0x10; bool flag = false; // Read 6 bytes of data from register(0x42) // xMag lsb, xMag msb, yMag lsb, yMag msb, zMag lsb, zMag msb config[0] = 0x42; r_code += nrf_drv_twi_tx(&m_twi_mma_7660, dev_addr, config,1, flag); //send_num(rslt,"rslt6="); r_code += nrf_drv_twi_rx(&m_twi_mma_7660, dev_addr, data, 6); //send_num(rslt,"rslt7="); s16 xMag = (data[1] * 256 + (data[0] & 0xF8)) / 8; if(xMag > 4095) { xMag -= 8192; } // r_data->mx = xMag; s16 yMag = (data[3] * 256 + (data[2] & 0xF8)) / 8; if(yMag > 4095) { yMag -= 8192; } //r_data->my = yMag; s16 zMag = (data[5] * 256 + (data[4] & 0xFE)) / 2; if(zMag > 16383) { zMag -= 32768; } agg_data.mx = xMag; agg_data.my = yMag; agg_data.mz = zMag; log_num(xMag,"xMag="); log_num(yMag,"yMag="); log_num(zMag,"zMag="); return r_code; } u8 init_accel(){ bool flag = false; u8 dev_addr = 0x18; // Select PMU_Range register(0x0F) // Range = +/- 2g(0x03) config[0] = 0x0F; config[1] = 0x03; r_code += nrf_drv_twi_tx(&m_twi_mma_7660, dev_addr, config,2,flag); log_num(r_code,"arslt0="); r_code += nrf_drv_twi_rx(&m_twi_mma_7660, dev_addr, temp_data, 2); log_num(r_code,"arslt1="); // Select PMU_BW register(0x10) // Bandwidth = 7.81 Hz(0x08) config[0] = 0x10; config[1] = 0x08; r_code += nrf_drv_twi_tx(&m_twi_mma_7660, dev_addr, config,2, flag); log_num(r_code,"arslt2="); // Select PMU_LPW register(0x11) // Normal mode, Sleep duration = 0.5ms(0x00) config[0] = 0x11; config[1] = 0x00; r_code += nrf_drv_twi_tx(&m_twi_mma_7660, dev_addr, config,2, flag); log_num(r_code,"arslt3="); nrf_delay_ms(1); return r_code; } u8 read_accel(){ bool flag = false; u8 dev_addr = 0x18; config[0] = 0x02; r_code = nrf_drv_twi_tx(&m_twi_mma_7660, dev_addr, config,1, flag); //send_num(rslt,"rslt6="); r_code += nrf_drv_twi_rx(&m_twi_mma_7660, dev_addr, data, 6); // Convert the data int xAccl = (data[1] * 256 + (data[0] & 0xF0)) / 16; if(xAccl > 2047) { xAccl -= 4096; } 
 int yAccl = (data[3] * 256 + (data[2] & 0xF0)) / 16; if(yAccl > 2047) { yAccl -= 4096; } 
 int zAccl = (data[5] * 256 + (data[4] & 0xF0)) / 16; if(zAccl > 2047) { zAccl -= 4096; } log_num(xAccl,"xAccl="); log_num(yAccl,"yAccl="); log_num(zAccl,"zAccl="); agg_data.ax = xAccl; agg_data.ay = yAccl; agg_data.az = zAccl; return r_code; } u8 init_gyr(){ bool flag = false; u8 dev_addr = 0x68; // Select PMU_Range register(0x0F) // Range = +/- 2g(0x03) config[0] = 0x0F; config[1] = 0x04; r_code = nrf_drv_twi_tx(&m_twi_mma_7660, dev_addr, config,2,flag); log_num(r_code,"arslt0="); r_code += nrf_drv_twi_rx(&m_twi_mma_7660, dev_addr, temp_data, 2); //log_num(rslt,"arslt1="); // Select PMU_BW register(0x10) // Bandwidth = 7.81 Hz(0x08) config[0] = 0x10; config[1] = 0x07; 
 r_code += nrf_drv_twi_tx(&m_twi_mma_7660, dev_addr, config,2, flag); log_num(r_code,"arslt2="); // Select PMU_LPW register(0x11) // Normal mode, Sleep duration = 0.5ms(0x00) config[0] = 0x11; config[1] = 0x00; r_code += nrf_drv_twi_tx(&m_twi_mma_7660, dev_addr, config,2, flag); log_num(r_code,"arslt3="); nrf_delay_ms(1); return r_code; } u8 read_gyr(){ bool flag = false; u8 dev_addr = 0x68; config[0] = 0x02; r_code = nrf_drv_twi_tx(&m_twi_mma_7660, dev_addr, config,1, flag); //send_num(rslt,"rslt6="); r_code += nrf_drv_twi_rx(&m_twi_mma_7660, dev_addr, data, 6); // Convert the data int xGyro = (data[1] * 256 + data[0]); if (xGyro > 32767) { xGyro -= 65536; } 
 int yGyro = (data[3] * 256 + data[2]); if (yGyro > 32767) { yGyro -= 65536; } 
 int zGyro = (data[5] * 256 + data[4]); if (zGyro > 32767) { zGyro -= 65536; } log_num(xGyro,"xGyro="); log_num(yGyro,"yGyro="); log_num(zGyro,"zGyro="); agg_data.gx = xGyro; agg_data.gy = yGyro; agg_data.gz = zGyro; return r_code; }