I am using this SDK version 17.1.0 as I am using ESB in this project. So far I have gotten ESB, SPI, and UART communications working. SPI and UART are both using easy DMA, and I was trying to get easy DMA I2C working with this project. I am using the Segger Embedded Studio toolchain version 7.32a. I am including my sdk_config.h file and my i2cDrv.c that right now just tries to initialize my !2C bus. I am getting the following error. Nothing I am doing seems to be working. I am also attaching the snippet that shows the pertinent files that are included in my project.
/******************************************************************************
* @copyright
* Copyright (c) 2026 NeuroGenesis Diagnostics Inc.
*
* This software is proprietary and confidential.
******************************************************************************
* @file i2cDrv.c
*****************************************************************************/
#include "i2cDrv.h"
#include "sdk_config.h"
#include "nrf.h"
#include "sdk_common.h"
//#include "nrf_drv_twi.h"
#include "nrf_twi_mngr.h"
#define TWI_INSTANCE_ID 0 // TWIM0
#define TWI_QUEUE_LENGTH 20
#define I2C_SCL_PIN 26
#define I2C_SDA_PIN 27
#define NRF_TWI_MNGR_OP_WRITE(addr) ((addr) << 1)
#define NRF_TWI_MNGR_OP_READ(addr) (((addr) << 1) | 0x01)
// Create I2C manager instance
NRF_TWI_MNGR_DEF(m_twi_mngr, TWI_QUEUE_LENGTH, TWI_INSTANCE_ID);
void twi_init(void)
{
nrf_drv_twi_config_t twi_config = {
.scl = I2C_SCL_PIN,
.sda = I2C_SDA_PIN,
.frequency = NRF_TWI_FREQ_400K,
.interrupt_priority = APP_IRQ_PRIORITY_LOW,
.clear_bus_init = false,
.hold_bus_uninit = false
};
ret_code_t err_code = nrf_twi_mngr_init(&m_twi_mngr, &twi_config);
APP_ERROR_CHECK(err_code);
}
Any ideas what I am doing wrong? If more information is needed just let me know what you need. Thanks
