NRF51822 's Simulated IIC

The works used are based on the SDK10 engineering

In the nrf51_sdk_10.0.0_dc26b5e\examples\peripheral\twi_sensor will be used as the template

Modify Code MAIN.C

1#include <stdio.h>2#include"Boards.h"3#include"app_util_platform.h"4#include"App_error.h"5#include"nrf_drv_twi.h"6#include"Nrf_delay.h"7#include"mpu6050.h"8#include"Twi_master.h"9#include"segger_rtt.h"Ten  One /** A * @brief Function for main application entry. -  */ - intMainvoid) the {     - uint8_t ID; - Twi_master_init ();  -  +segger_rtt_printf (0,"mpu6050 test\r\n"); -segger_rtt_printf (0,"mpu6050 Address 0x68\r\n"); +      if(Mpu6050_init (0x68) ==false) A      { atsegger_rtt_printf (0,"mpu6050 Init fail\r\n"); -      } -Mpu6050_register_read (0x75u, &id,1); -segger_rtt_printf (0,"mpu6050 ID is%02x \ r \ n", id); -      -segger_rtt_printf (0,"mpu6050 Address 0x69\r\n"); in     if(Mpu6050_init (0x69) ==false) -     { tosegger_rtt_printf (0,"mpu6050 Init fail\r\n"); +     } -Mpu6050_register_read (0x75u, &id,1); thesegger_rtt_printf (0,"mpu6050 ID is%02x \ r \ n", id); *      $      while(true)Panax Notoginseng     { -     } the}

Note: When the mpu_ad0 is dangling/connected to GND, the IIC slave address of the module is: 0X68; When the mpu_ad0 is connected to VCC, the IIC slave address of the module is: 0X69.

Why write more a 0x69, is because the actual test found PIN8 and PIN9 short-circuit ... So the baby's heart is bitter not to say.

Need to add files

.. \.. \.. \.. \.. \components\drivers_ext\mpu6050\mpu6050.c

.. \.. \.. \.. \.. \components\drivers_nrf\twi_master\deprecated\twi_sw_master.c

Add header File

.. \.. \.. \.. \.. \components\drivers_ext\mpu6050

.. \.. \.. \.. \.. \components\drivers_nrf\twi_master\deprecated

.. \.. \.. \.. \.. \components\drivers_nrf\twi_master\deprecated\config

Finally, according to their own circuit modification twi_master_config

#ifndef twi_master_config #define Twi_master_config#define TWI_MASTER_CONFIG_CLOCK_PIN_NUMBER (10U) #define Twi_master_config_data_pin_number (9U )#endif

Output results

NRF51822 's Simulated IIC