Hello guys, i currently applying the example about MPU9255 following this:GitHub - Martinsbl/nrf5-mpu-examples
i'm using the app_mpu.c, app_mpu.h, mpu9255_register_map.h, nrf_drv_mpu.h, nrf_drv_mpu_twi.c to create new project with the main.c and sdk config in nrf5-mpu-simple.
when i build and log showing this error. Could anyone help me with this, many thank,
Kyle.
Hello,
This is my main.c file
/*
* This example is not extensively tested and only
* meant as a simple explanation and for inspiration.
* NO WARRANTY of ANY KIND is provided.
*/
#include <stdio.h>
#include "boards.h"
#include "app_uart.h"
#include "app_error.h"
#include "nrf_delay.h"
#include "app_mpu.h"
#include "nrf_log.h"
#include "nrf_log_ctrl.h"
#include "nrf_log_default_backends.h"
/**@brief Function for initializing the nrf log module.
*/
static void log_init(void)
{
ret_code_t err_code = NRF_LOG_INIT(NULL);
APP_ERROR_CHECK(err_code);
NRF_LOG_DEFAULT_BACKENDS_INIT();
}
void mpu_init(void)
{
ret_code_t ret_code;
// Initiate MPU driver
ret_code = app_mpu_init();
APP_ERROR_CHECK(ret_code); // Check for errors in return value
// Setup and configure the MPU with intial values
app_mpu_config_t p_mpu_config = MPU_DEFAULT_CONFIG(); // Load default values
p_mpu_config.smplrt_div = 19; // Change sampelrate. Sample Rate = Gyroscope Output Rate / (1 + SMPLRT_DIV). 19 gives a sample rate of 50Hz
p_mpu_config.accel_config.afs_sel = AFS_2G; // Set accelerometer full scale range to 2G
ret_code = app_mpu_config(&p_mpu_config); // Configure the MPU with above values
APP_ERROR_CHECK(ret_code); // Check for errors in return value
}
/**
* @brief Function for main application entry.
*/
int main(void)
{
uint32_t err_code;
// Initialize.
log_init();
NRF_LOG_INFO("\033[2J\033[;H"); // Clear screen
mpu_init();
// Start execution.
NRF_LOG_INFO("MPU Free Fall Interrupt example.");
accel_values_t acc_values;
uint32_t sample_number = 0;
while(1)
{
if(NRF_LOG_PROCESS() == false)
{
// Read accelerometer sensor values
err_code = app_mpu_read_accel(&acc_values);
APP_ERROR_CHECK(err_code);
// Clear terminal and print values
NRF_LOG_INFO("\033[3;1HSample # %d\r\nX: %06d\r\nY: %06d\r\nZ: %06d", ++sample_number, acc_values.x, acc_values.y, acc_values.z);
nrf_delay_ms(250);
}
}
}
/** @} */
The MPU was powered and i have built 1 project before to test the response of TWI it's work normally, but the init of MPU is fail, idk why?
