AFE49I30: Problem on communicating with I2C interface.

vahid Foroutan

Part Number: AFE49I30
Other Parts Discussed in Thread: ADS1292R

I have written a code for initializing and controlling AFE49I30. I have carefully read the datasheet. The simple driver file (.c file) is already completed. However, MCU starts the connection with AFE49I30, but the connection is unsuccessful. I use nrf52840 as MCU. Since writing the driver for this chip can be complex, can you look at my code for any possible mistakes? The main file belongs to a previous project that uses ADS1292R. However, the possible problems may be found in driver files (AFE49I30.c and AFE49I30.h) that can be found in the attachment. the relevant function calls in the main file are:
twi_init();
init_AFE49I30();
AFE49I30_read_all_regs();
AFE49I30_read_data((uint32_t *)&AFE_raw_data);

Please keep this inquiry private as this chip has NDA restrictions.

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/************************************************************************
                          include libraries
************************************************************************/
#include <string.h>
#include "nrf_drv_twi.h"
#include "nrf_delay.h"
#include "boards.h"
#include "nrf_log.h"
#include "nrf_log_ctrl.h"
#include "nrf_log_default_backends.h"
#include "AFE49I30.h"
//#include "nrf_drv_gpiote.h"
//#include "app_error.h"
//#include "app_util_platform.h"
//#include "nrf_gpio.h"
//#include "nrf_drv_spi.h"
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

/************************************************************************
                          include libraries

************************************************************************/

#include <string.h>
#include "nrf_drv_twi.h"
#include "nrf_delay.h"
#include "boards.h"
#include "nrf_log.h"
#include "nrf_log_ctrl.h"
#include "nrf_log_default_backends.h"
#include "AFE49I30.h"
//#include "nrf_drv_gpiote.h"
//#include "app_error.h"
//#include "app_util_platform.h"
//#include "nrf_gpio.h"
//#include "nrf_drv_spi.h"



/**********************************************************************
                           AFE49I30 Global Variables										                                  											  *

/**********************************************************************/
/* Common addresses definition */
#define AFE49I30_ADDR          0x5B

#define page0_size             58
#define page1_size             120


uint8_t AFE49I30_page1_address[page1_size];
uint32_t AFE49I30_page1_data[page1_size];
uint8_t AFE49I30_page0_address[page0_size];
uint32_t AFE49I30_page0_data[page0_size];
/**********************************************************************
                            I2C define

/*********************************************************************/
/* TWI instance ID. */
#define TWI_INSTANCE_ID     0

/* TWI instance. */
static const nrf_drv_twi_t m_twi = NRF_DRV_TWI_INSTANCE(TWI_INSTANCE_ID);
/* Indicates if operation on TWI has ended. */
static volatile bool m_xfer_done = false;
static int twi_error=0;
/* Buffer for samples read fromsensor. */
static uint32_t m_sample;




/**********************************************************************
                           AFE49I30 functions									                                  											  *

/**********************************************************************/

/*--------------------------------------------------------------*/
/**
 * @brief Function for reading data from AFE49I30 through I2C
 *
 * @param[in] register address
 */
uint32_t AFE_Reg_Read(uint8_t reg_address)
{
    ret_code_t err_code;
    uint8_t configData[3];
    signed long retVal;

    err_code = nrf_drv_twi_tx(&m_twi, AFE49I30_ADDR, (uint8_t *)&reg_address, 1, true);
    APP_ERROR_CHECK(err_code);
    while (m_xfer_done == false);

    //I2C_read
    err_code = nrf_drv_twi_rx(&m_twi, AFE49I30_ADDR, (uint8_t *)&configData, 3);
    APP_ERROR_CHECK(err_code);

    retVal = configData[0];
    retVal = (retVal << 8) | configData[1];
    retVal = (retVal << 8) | configData[2];
    //if (reg_address >= 0x2A && reg_address <= 0x2F)
    //{
    //  if (retVal & 0x00200000)  // check if the ADC value is positive or negative
    //  {
    //    retVal &= 0x003FFFFF;   // convert it to a 22 bit value
    //    return (retVal^0xFFC00000);
    //  }
    //}
    retVal &= 0x003FFFFF;   // convert it to a 22 bit value
    return retVal;
}


/*--------------------------------------------------------------*/
/**
 * @brief Function for writting data to AFE49I30 through I2C
 *
 * @param[in] register address and its content
 */
void AFE_Reg_Write (uint8_t reg_address, uint32_t data)
{
    ret_code_t err_code;
    uint8_t configData[3];
    //NRF_LOG_INFO("%x",data);

    configData[0]=(uint8_t) ((data & 0x00FFFFFF) >>16);
    configData[1]=(uint8_t) ((data & 0x0000FFFF) >>8);
    configData[2]=(uint8_t) (data & 0x000000FF);
    //I2C_write
    err_code = nrf_drv_twi_tx(&m_twi, AFE49I30_ADDR, (uint8_t *)&reg_address, 1, true);
    APP_ERROR_CHECK(err_code);
    NRF_LOG_INFO("test0,%x,%x,%x",AFE49I30_ADDR,reg_address,err_code);
    while (m_xfer_done == false)
    {
    //NRF_LOG_INFO("twi_error:%d",twi_error);
    }
    NRF_LOG_INFO("test1");
    err_code = nrf_drv_twi_tx(&m_twi, AFE49I30_ADDR, (uint8_t *)&configData, 3, true);
    APP_ERROR_CHECK(err_code);
    while (m_xfer_done == false);
}


/*--------------------------------------------------------------*/
/**
 * @brief Function for page selection of AFE49I30.
 *
 * @param[in] page number
 */
void AFE49I30_page_sel(short page_num)
{
  uint8_t address=0x01;
  uint32_t page1=0x00000001;
  uint32_t page0=0x00000000;
  if(page_num==1) AFE_Reg_Write(address, page1);
  else if(page_num==0) AFE_Reg_Write(address, page0);
  else;
}


/*--------------------------------------------------------------*/
/**
 * @brief Function for reading data from AFE49I30.
 *
 * @param[out] raw data
 */
void AFE49I30_read_data(uint32_t *raw_data)
{
  uint8_t FIFO_add = 0xFF;
  for (int i=0;i<Num_Phase;i++)
  {
    raw_data[i] = AFE_Reg_Read(FIFO_add); 
  }
  return;
}


/*--------------------------------------------------------------*/
/**
 * @brief Function for reading AFE49I30 all registers.
 *
 */
void AFE49I30_read_all_regs(void)
{
  short page_num;
  nrf_delay_ms(1);
  uint32_t current_read;
  //---------read page1 registers------
  page_num=1;
  AFE49I30_page_sel(page_num);
  for (int i=0;i<page1_size;i++)
  {
    current_read = AFE_Reg_Read(AFE49I30_page1_address[i]); 
    NRF_LOG_INFO("reg:%x,%x\r\n",AFE49I30_page1_address[i], current_read); 
  }
  //---------read page0 registers------
  page_num=0;
  AFE49I30_page_sel(page_num);
  for (int i=0;i<page0_size;i++)
  {
    current_read = AFE_Reg_Read(AFE49I30_page0_address[i]);
    NRF_LOG_INFO("reg:%x,%x\r\n",AFE49I30_page0_address[i], current_read);  
  }
  //---------read enable register-------
  uint8_t enable_register_add=0x1D;
  current_read = AFE_Reg_Read(enable_register_add);  
  NRF_LOG_INFO("reg:%x,%x\r\n",enable_register_add, current_read);
}


/*--------------------------------------------------------------*/
/**
 * @brief Function for initializing AFE49I30.
 *
 */
void init_AFE49I30(void)
{
  short page_num;
  nrf_delay_ms(1);
  AFE49I30_Hard_reset();
  nrf_delay_ms(1);
  //---------write page1 registers--------
  page_num=1;
  AFE49I30_page_sel(page_num);
  NRF_LOG_INFO("test2");
  for (int i=0;i<page1_size;i++)
  {
    NRF_LOG_INFO("test3");
    NRF_LOG_INFO("reg:%x,%x\r\n",AFE49I30_page1_address[i],AFE49I30_page1_data[i]);
    AFE_Reg_Write(AFE49I30_page1_address[i], AFE49I30_page1_data[i]);
  }
  //---------write page0 registers------
  page_num=0;
  AFE49I30_page_sel(page_num);
  for (int i=0;i<page0_size;i++)
  { 
    AFE_Reg_Write(AFE49I30_page0_address[i], AFE49I30_page0_data[i]);  
  }
  //---------write enable register-------
  uint8_t enable_register_add=0x1D;
  uint32_t enable_register_dat=0x00C000A0;
  AFE_Reg_Write(enable_register_add,enable_register_dat);  
}


/*--------------------------------------------------------------*/
/**
 * @brief Function for handling data.
 *
 * @param[in] temp
 */
__STATIC_INLINE void data_handler(uint32_t temp)
{
    NRF_LOG_INFO("Data is: %d", temp);
}


/*--------------------------------------------------------------*/
/**
 * @brief TWI events handler.
 *
 */
void twi_handler(nrf_drv_twi_evt_t const * p_event, void * p_context)
{
    switch (p_event->type)
    {
        case NRF_DRV_TWI_EVT_DONE:
            if (p_event->xfer_desc.type == NRF_DRV_TWI_XFER_RX)
            {
                data_handler(m_sample);
            }
            m_xfer_done = true;
            break;
        case NRF_DRV_TWI_EVT_ADDRESS_NACK:
            twi_error = 1;
            break;
        case NRF_DRV_TWI_EVT_DATA_NACK:
            twi_error = 2;
            break;
        default:
            break;
    }
}


/*--------------------------------------------------------------*/
/**
 * @brief TWI initialization.
 *
 */
void twi_init (void)
{
    ret_code_t err_code;
    const nrf_drv_twi_config_t twi_config = {
       .scl                = SCL1,
       .sda                = SDA1,
       .frequency          = NRF_DRV_TWI_FREQ_100K,
       .interrupt_priority = APP_IRQ_PRIORITY_HIGH,
       .clear_bus_init     = false
    };
    err_code = nrf_drv_twi_init(&m_twi, &twi_config, twi_handler, NULL);
    APP_ERROR_CHECK(err_code);
    nrf_drv_twi_enable(&m_twi);
    // To secure correct signal levels on the pins used by the TWI master when the system is in OFF mode, and
    // when the TWI master is disabled, SDA and SCL pins must be configured in the GPIO peripheral as follows:
    // SCL As specified in PSEL.SCL: Input H0D1
    // SDA As specified in PSEL.SDA: Input H0D1
    nrf_gpio_cfg(SDA1, NRF_GPIO_PIN_DIR_INPUT, NRF_GPIO_PIN_INPUT_CONNECT, NRF_GPIO_PIN_PULLUP, NRF_GPIO_PIN_H0D1, NRF_GPIO_PIN_NOSENSE);
    nrf_gpio_cfg(SCL1, NRF_GPIO_PIN_DIR_INPUT, NRF_GPIO_PIN_INPUT_CONNECT, NRF_GPIO_PIN_PULLUP, NRF_GPIO_PIN_H0D1, NRF_GPIO_PIN_NOSENSE);
    ////////#define  PIN_VDD_ENV    (22)
    ////////#define  PIN_R_PULLUP   ( 0+32)

    ////////nrf_gpio_pin_set(PIN_VDD_ENV);
    ////////nrf_gpio_pin_set(PIN_R_PULLUP);
    ////////// Power up and wait for voltage to rise
    ////////nrf_gpio_cfg(PIN_VDD_ENV,  NRF_GPIO_PIN_DIR_OUTPUT, NRF_GPIO_PIN_INPUT_DISCONNECT, NRF_GPIO_PIN_NOPULL, NRF_GPIO_PIN_S0H1, NRF_GPIO_PIN_NOSENSE);
    ////////nrf_gpio_cfg(PIN_R_PULLUP, NRF_GPIO_PIN_DIR_OUTPUT, NRF_GPIO_PIN_INPUT_DISCONNECT, NRF_GPIO_PIN_NOPULL, NRF_GPIO_PIN_S0H1, NRF_GPIO_PIN_NOSENSE);
    nrf_delay_ms(20);
}


/*--------------------------------------------------------------*/
/**
 * @AFE49I30 hardware reset
 *
 */
void AFE49I30_Hard_reset(void)
{
  nrf_gpio_pin_set(AFE49I30_reset_pin);
  nrf_delay_us(30);
  nrf_gpio_pin_clear(AFE49I30_reset_pin);
  nrf_delay_us(30);
  nrf_gpio_pin_set(AFE49I30_reset_pin);
}
/*--------------------------------------------------------------*/

/*****************************************************************************
 
                    AFE49I30 page1 registers                                

*****************************************************************************/
uint8_t AFE49I30_page1_address[page1_size] = {
0x20,
0x21,
0x22,
0x23,
0x24,
0x25,
0x26,
0x27,
0x28,
0x29,
0x2A,
0x2B,
0x2C,
0x2D,
0x2E,
0x2F,
0x30,
0x31, 
0x32, 
0x33, 
0x34, 
0x35, 
0x36, 
0x37, 
0x38, 
0x39, 
0x3A, 
0x3B, 
0x3C, 
0x3D, 
0x3E, 
0x3F, 
0x40, 
0x41, 
0x42, 
0x43, 
0x44, 
0x45, 
0x46, 
0x47, 
0x48, 
0x49, 
0x4A, 
0x4B, 
0x4C, 
0x4D, 
0x4E, 
0x4F, 
0x50, 
0x51, 
0x52, 
0x53, 
0x54, 
0x55, 
0x56, 
0x57, 
0x58, 
0x59, 
0x5A, 
0x5B, 
0x5C, 
0x5D, 
0x5E, 
0x5F, 
0x60, 
0x61, 
0x62, 
0x63, 
0x64, 
0x65, 
0x66, 
0x67, 
0x68, 
0x69, 
0x6A, 
0x6B, 
0x6C, 
0x6D, 
0x6E, 
0x6F, 
0x70, 
0x71, 
0x72, 
0x73, 
0x74, 
0x75, 
0x76, 
0x77, 
0x78, 
0x79, 
0x7A, 
0x7B, 
0x7C, 
0x7D, 
0x7E, 
0x7F, 
0x80, 
0x81, 
0x82, 
0x83, 
0x84, 
0x85, 
0x86, 
0x87, 
0x88, 
0x89, 
0x8A, 
0x8B, 
0x8C, 
0x8D, 
0x8E, 
0x8F, 
0x90, 
0x91, 
0x92, 
0x93, 
0x94, 
0x95, 
0x96, 
0x97
};

uint32_t AFE49I30_page1_data[page1_size] = {
0x010000, 
0x0077B1, 
0x02000E, 
0x0017B0, 
0x050000, 
0x010001, 
0x00B4B1, 
0x02000E, 
0x0014B0, 
0x850014, 
0x010000, 
0x0054B1, 
0x06000E, 
0x0014B0, 
0x050000, 
0x000000, 
0x000021, 
0x080002, 
0x000020, 
0x000000, 
0x010000, 
0x000000, 
0x000000, 
0x000000, 
0x000000, 
0x010000, 
0x000000, 
0x000000, 
0x000000, 
0x000000, 
0x040000, 
0x000000, 
0x000000, 
0x000000, 
0x000000, 
0x040000, 
0x000000, 
0x000000, 
0x000000, 
0x000000, 
0x080000, 
0x000000, 
0x000000, 
0x000000, 
0x000000, 
0x080000, 
0x000000, 
0x000000, 
0x000000, 
0x000000, 
0x080000, 
0x000000, 
0x000000, 
0x000000, 
0x000000, 
0x080000, 
0x000000, 
0x000000, 
0x000000, 
0x000000, 
0x020000, 
0x000000, 
0x000000, 
0x000000, 
0x000000, 
0x020000, 
0x000000, 
0x000000, 
0x000000, 
0x000000, 
0x020000, 
0x000000, 
0x000000, 
0x000000, 
0x000000, 
0x020000, 
0x000000, 
0x000000, 
0x000000, 
0x000000, 
0x020000, 
0x000000, 
0x000000, 
0x000000, 
0x000000, 
0x020000, 
0x000000, 
0x000000, 
0x000000, 
0x000000, 
0x020000, 
0x000000, 
0x000000, 
0x000000, 
0x000000, 
0x020000, 
0x000000, 
0x000000, 
0x000000, 
0x000000, 
0x020000, 
0x000000, 
0x000000, 
0x000000, 
0x000000, 
0x020000, 
0x000000, 
0x000000, 
0x000000, 
0x000000, 
0x020000, 
0x000000, 
0x000000, 
0x000000, 
0x000000, 
0x020000, 
0x000000, 
0x000000, 
0x000000, 
0x000000
};


/********************************************************************
 
                    AFE49I30 page0 registers (except 1Dh)                                

*********************************************************************/
uint8_t AFE49I30_page0_address[page0_size] = {
0x00, 
0x01, 
0x02, 
0x03, 
0x04,  
//0x1D, 
0x1E, 
0x23, 
0x24, 
0x25, 
0x29,  
0x42,  
0x4B, 
0x4E, 
0x4F, 
0x50, 
0x51, 
0x57, 
0x58, 
0x61, 
0x62, 
0x63, 
0x6C, 
0x6D, 
0x72, 
0x73,  
0x78, 
0x79, 
0x80,  
0x88, 
0x8A, 
0x8B, 
0x8C, 
0x8D, 
0x8E, 
0x8F, 
0x91, 
0x92, 
0x93, 
0x94, 
0x95, 
0x96, 
0x97, 
0x98, 
0x99, 
0x9A, 
0x9C, 
0x9D, 
0x9E, 
0xA0, 
0xA1, 
0xA2, 
0xA4, 
0xA5, 
0xA6, 
0xA9,
0xAA,
0xB4
};


uint32_t AFE49I30_page0_data[page0_size] = {
0x000000, 		
0x000000, 
0x600000, 
0x000000, 
0x000000, 
//0xC000A0, 
0x000000, 
0x068000, 
0x002000, 
0x000000, 
0x050000, 
0x0010E0,  
0x000000, 
0xFE8004, 
0x010004, 
0x100000, 
0x000000, 
0x000000, 
0x000000, 
0x080000, 
0x800000, 
0x000000, 
0x000000, 
0x000000, 
0x000000, 
0x047C3C, 
0x80E005, 
0x00E005, 
0x000000, 
0x000003, 
0x000000, 
0x000100, 
0x000000, 
0x000000, 
0x000000, 
0x000000, 
0x000000, 
0x000000, 
0x000000, 
0x000084, 
0x000050, 
0x000000, 
0x000023,  
0x000000, 
0x200355, 
0x000000, 
0x000400, 
0x000015, 
0x000000, 
0x000400, 
0x000015, 
0x000000, 
0x000400, 
0x000015, 
0x000000, 
0x000000, 
0x000000, 
0x000000
};

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#ifndef AFE49I30_H_
#define AFE49I30_H_
/******************************************************************************
                               AFE49I30 global definitions
******************************************************************************/
#define Num_Phase           6
/******************************************************************************
                               AFE49I30 pins definition
******************************************************************************/
#define AFE49I30_reset_pin  16
#define AFE49I30_DRDY_pin   25
/******************************************************************************
                               AFE49I30 global functions
******************************************************************************/
void twi_init (void);
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

#ifndef AFE49I30_H_
#define AFE49I30_H_


/******************************************************************************
                               AFE49I30 global definitions
******************************************************************************/
#define Num_Phase           6

/******************************************************************************
                               AFE49I30 pins definition
******************************************************************************/
#define AFE49I30_reset_pin  16
#define AFE49I30_DRDY_pin   25



/******************************************************************************
                               AFE49I30 global functions
******************************************************************************/
void twi_init (void);
void init_AFE49I30(void);
void AFE49I30_read_all_regs(void);
void AFE49I30_read_data(uint32_t *raw_data);
void AFE49I30_Hard_reset(void);



#endif /*AFE49I30_H_*/

over 2 years ago

0 Karthik Nagabhushana over 2 years ago

TI__Expert 4780 points

Hi,

Our application engineer handling this part is currently on vacation. So, kindly expect a delay in our response.

I will check with other team members and get a response by June 14.

Thank you for you patience.

Karthik

0 ChienChun Yang over 2 years ago

TI__Mastermind 19815 points

Hi,

I need more time and will get back to you around 6/12.

0 ChienChun Yang over 2 years ago

TI__Mastermind 19815 points

Hi,

As you mentioned, this device is under NDA, so I will reach out to you via email.

Thanks.

0 vahid Foroutan over 2 years ago in reply to Karthik Nagabhushana

Prodigy 20 points

yes, I understand. Thank you for your time and help

0 vahid Foroutan over 2 years ago in reply to ChienChun Yang

Prodigy 20 points

no problem. I look forward to hearing from you

0 ChienChun Yang over 2 years ago in reply to vahid Foroutan

TI__Mastermind 19815 points

Hi,

I sent multiple emails to you.

Thanks

0 vahid Foroutan over 2 years ago in reply to ChienChun Yang

Prodigy 20 points

[deleted]

0 ChienChun Yang over 2 years ago in reply to vahid Foroutan

TI__Mastermind 19815 points

Hi,

I just sent emails to you again with the new email address you provided.

I am deleting your post so not to disclose your personal email.

Thanks

0 ChienChun Yang over 2 years ago in reply to ChienChun Yang

TI__Mastermind 19815 points

Hi,

Are your email address ending in parsjahd.com proper and properly setup?

I tried sending emails to both your company and personal email address, but got failed to deliver and rejected.

Thanks

0 vahid Foroutan over 2 years ago in reply to ChienChun Yang

Prodigy 20 points

Hi,

Thank you for your response. I apologize for any confusion. I would like to provide you with my correct company email address, which is **********@parsjahd.com.

I understand that you have been sending me emails through the TI E2E platform, but unfortunately, I have not been receiving them in my company email inbox. However, I have received your emails through my personal email address, and I greatly appreciate your consideration and efforts in reaching out to me.

I have already responded to your previous emails, and I believe my response may provide further clarification on my inquiry. I want to express my gratitude for your ongoing help and support.

0 vahid Foroutan over 2 years ago in reply to ChienChun Yang

Prodigy 20 points

Thank you

0 ChienChun Yang over 2 years ago in reply to vahid Foroutan

TI__Mastermind 19815 points

Replied to your gmail. Please provide&cc to your official company/institution/organization email. And, let's stay in email discussion as this is under NDA.

Thanks

0 vahid Foroutan over 2 years ago in reply to ChienChun Yang

Prodigy 20 points

ok sure. thank you

0 ChienChun Yang over 2 years ago in reply to vahid Foroutan

TI__Mastermind 19815 points

we will communicate via email. So, I am closing this thread.

Thanks

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AFE49I30: Problem on communicating with I2C interface.