How to verify there is proper I2C connection is happened between DA14531 MOD and (I2C device) MCP3422

Thank you for your response,

As per your answer, I have checked the abrt_code status and I have also modified some other error&status checks also.

// * user_variables＆prototype_start * //
static void set_dev_addr(uint8_t);
int i2cm_write（uint8_t，uint8_t const * const，uint8_t，bool）;
int i2cm_read（uint8_t，uint8_t * const，uint8_t，bool）;
static int read(uint8_t, uint8_t * const, uint8_t);

静态const i2c_cfg_t i2c_cfg = {
.clock_cfg.ss_hcnt = I2C_SS_SCL_HCNT_REG_RESET,
.clock_cfg.ss_lcnt = I2C_SS_SCL_LCNT_REG_RESET,
.clock_cfg.fs_hcnt = i2c_fs_scl_hcnt_reg_reset，
.clock_cfg.fs_lcnt = i2c_fs_scl_lcnt_reg_reset，
.restart_en = i2c_restart_enable，//启用RESTART条件
.speed = i2c_speed_standard，
.mode = i2c_mode_master，//主模式
.addr_mode = I2C_ADDRESSING_7B, // 7-bit addressing
/* Device address specified when read/write takes place allowing multiple devices to be present on the same I2C bus */
.address = 0x68, // Address of target/slave (1101000 for MCP3422)
.tx_fifo_level = 1,
.rx_fifo_level = 1，
};

const uint8_t READ_CONFIG = 0x10; // 00010000
uint8_t *data; //Buffer where data are stored
uint16_t len = 1; //Length of the data buffer

// * user_variables＆prototype_end * //

void i2c_test(void);

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

int main (void)
{
system_init（）;
i2c_test();

//虽然（1）;
}

void i2c_test(void)
{
printf_string(UART, "\n\r\n\r************");
printf_string（UART，“\ n \ r * i2c test * \ n \ r”）;
printf_string(UART, "************\n\r");
//bool isNewTempValue = 1;
// float temp = read_mcp3422（＆isnewtempvalue）;

i2c_init(&i2c_cfg);
int ret = read(READ_CONFIG, data, len);
if(0 != ret){
printf_string（UART，“\ n \ n \ r * readfun = rest return reter;//调试输出
printf_byte (UART,ret);
}
}

静态int read（uint8_t addr，uint8_t * const数据，uint8_t len）
{
int ret;

/* Set register address to read from */
if ((ret =i2cm_write(MCP3422_I2C_SLAVE_ADDR, &addr, sizeof(addr), false)) == 0) {
/* Read data at the address */
ret =i2cm_read（mcp3422_i2c_slave_addr，data，len，true）;
}
返回Ret;
}

int i2cm_write（uint8_t dev_addr，uint8_t const * const buffer，uint8_t len，bool add_stop）
{
int ret = 0;
uint16_t bytesentent;
i2c_abort_t abrt_code;

UINT32_T标志= I2C_F_NONE;
if（add_stop）{
flags = I2C_F_WAIT_FOR_STOP | I2C_F_ADD_STOP;
}
/* Each I2C device on the bus has a unique address, set this before we communicate */
set_dev_addr（dev_addr）;
/ *执行阻塞写* /
Bytessent =.i2c_master_transmit_buffer_sync(buffer, len, &abrt_code, flags);

if ((I2C_ABORT_NONE != abrt_code) || (bytesSent != len)) {
ret =-1;
}
printf_string（UART，MTRANS = N \ RRETURN =“）;//调试输出
printf_byte (UART,ret);
printf_string(UART, "\n\rData bytes sent = "); // Debug output
printf_byte (UART,bytesSent);
printf_string(UART, "\n\rData sent = "); // Debug output
printf_byte (UART,buffer[0]);
返回Ret;
}

int i2cm_read(uint8_t dev_addr, uint8_t * const data, uint8_t len, bool add_stop)
{
int ret = 0;
uint16_t bytesreceived;
i2c_abort_t abrt_code;

UINT32_T标志= I2C_F_NONE;
if（add_stop）{
flags = I2C_F_ADD_STOP;
}
/* Each I2C device on the bus has a unique address, set this before we communicate */
set_dev_addr（dev_addr）;
/ *执行阻塞读* /
bytesReceived =i2c_master_receive_buffer_sync(data, len, &abrt_code, flags);

if ((abrt_code != I2C_ABORT_NONE) || (bytesReceived != len)) {
ret =-1;
}
printf_string(UART, "\n\rreturn after mRece = "); // Debug output
printf_byte (UART,ret);
printf_string（UART，“\ n \ rdata字节接收=”）;//调试输出
printf_byte (UART,bytesReceived);
printf_string(UART, "\n\rData received = "); // Debug output
printf_byte（UART，*数据）;
返回Ret;
}

static void set_dev_addr(uint8_t addr)
{
/* The device address can only be set when the controller is disabled */
i2c_set_controller_status(I2C_CONTROLLER_DISABLE);
/* There is a two ic_clk delay when enabling or disabling the controller */
while（i2c_get_controller_status（）！= i2c_controller_disable）;

i2c_set_target_address（i2c_cfg.address）;

i2c_set_controller_status(I2C_CONTROLLER_ENABLE);
/* There is a two ic_clk delay when enabling or disabling the controller */
while（（i2c_get_controller_status（）！= i2c_controller_enable））;
}

I am getting output as below:

************
* I2C TEST *
************

return after mTrans = 00
Data bytes sent = 01
数据发送= 10
return after mRece = FF
Data bytes received = 00
收到的数据= 48

* readfun = ff后返回

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

1. Ini2c_master_receive_buffer_sync(data, len, &abrt_code, flags);函数调用，我是否需要传递作为一个值abrt_code争论..？

2.在我的代码中，我没有通过任何abrt_codeargument and I am getting-1作为RET值在下面的状态检查。我无法理解为什么？

if ((abrt_code != I2C_ABORT_NONE) || (bytesReceived != len)) {
ret =-1;
}

在i2c_master_receive_buffer_sync();功能在I2C.C.我们直接检查了条件abrt_codevalue in if condition. as my understanding it is checking"i2c_abort_t abrt_code;".其中没有任何价值。如果我误解任何地方，你能向我解释吗？

if（abrt_code）{
* abrt_code = RET;
}

4. Thei2c_init(cfg);功能should be called after thesystem_init（）;功能正确..？但是，在你的eeprom_example中，你没有打电话i2c_init（）;功能.

3.我认为大多数客户面临着I2C接口的问题。您是否可以提供与传感器的I2C通信的任何简单示例代码，以便有助于使用DA14531_MOD开发I2C传感器接口。

谢谢你

D.RAVIKIRAN