Can I2C burst read on the DA1469x SNC?

Hi

我通过参考教程写了它。

To read the sensor's chip ID through SNC's i2c, I verified that I use SNC_i2c_write() and SNC_i2c_read() to read the chip ID.

However, when reading the fifo data from the sensor, it only reads the wrong value. When reading fifo data from the oscilloscope, it looks like the data is being transmitted from the sensor.

In addition, in the mode where SNC is not used, a valid value is read by reading the sensor's fifo data through i2c communication.

I attach the i2c format and part of the code that is currently used when communicating with the sensor.
Please let me know if there is anything wrong.

/***************************************************************************/
_snc_retated静态uint32_t cmd_arry [5] = {0};
_SNC_RETAINED static uint32_t *p_cmd_arry = &cmd_arry[0];

_SNC_RETAINED static uint32_t snc_rxbuf[10] = {0};
_SNC_RETAINED static uint32_t *snc_p_rxbuf = &snc_rxbuf[0];

_SNC_RETAINED static uint32_t snc_fifo[2048] = {0};
_SNC_RETAINED static uint32_t *snc_p_fifo = &snc_fifo[0];

......

void init_snc(void)
{
......
cfg.pdc_evt_pr = AD_SNC_PDC_EVT_PR_0;
cfg.ucode_pr = AD_SNC_UCODE_PR_1;
cfg.cb = _snc_read_cb;

cfg.pdc_entry = HW_PDC_LUT_ENTRY_VAL(HW_PDC_TRIG_SELECT_MASTER, HW_PDC_PERIPH_TRIG_ID_MASTERONLY,
HW_PDC_MASTER_SNC,
HW_PDC_LUT_ENTRY_EN_XTAL | HW_PDC_LUT_ENTRY_EN_COM |
hw_pdc_lut_entry_en_per |hw_pdc_lut_entry_en_tmr）;

UCode_CTX = SNC_UCODE_CTX（UCODE_SNC_COLLECT_SAMPLES）;
ucode_snc_init();
ucode_id = ad_snc_ucode_register(&cfg, ucode_ctx);
ad_snc_ucode_enable(ucode_id);

ad_snc_pdc_set_pending(snc_ucode_id);
}

SNC_UCODE_BLOCK_DEF(ucode_snc_collect_samples){
......

/* read chip id from sensor */
/ * write addr，idexs * /
SENIS_assign(da(&p_cmd_arry), &cmd_arry[0]);
SNC_i2c_open(I2C_DEV);
SENIS_assign(da(&cmd_arry[0]), 0x41);
SENIS_assign(da(&cmd_arry[1]), 0x00);
senis_assign（da（＆cmd_arry [2]），0xff）;
snc_mutex_lock（＆snc_mutex）;
SNC_i2c_write(I2C_DEV, ia(&p_cmd_arry), 3, SNC_HW_I2C_FLAG_ADD_STOP);
SNC_MUTEX_UNLOCK(&snc_mutex);
snc_i2c_close（i2c_dev）;
SENIS_del_ms(wait_delay);

/* read chip id */
SENIS_assign(da(&snc_p_rxbuf), &snc_rxbuf[0]);
SNC_i2c_open(I2C_DEV);
snc_mutex_lock（＆snc_mutex）;
SNC_i2c_read(I2C_DEV, ia(&snc_p_rxbuf), 2, SNC_HW_I2C_FLAG_ADD_STOP);
SNC_MUTEX_UNLOCK(&snc_mutex);
snc_i2c_close（i2c_dev）;

......

/ *从传感器读取FIFO数据* /
/ * write addr，idexs * /
SENIS_assign(da(&p_cmd_arry), &cmd_arry[0]);
SNC_i2c_open(I2C_DEV);
SENIS_assign(da(&cmd_arry[0]), 0x12);
SENIS_assign(da(&cmd_arry[1]), 0x01);
snc_mutex_lock（＆snc_mutex）;
SNC_i2c_write(I2C_DEV, ia(&p_cmd_arry), 2, SNC_HW_I2C_FLAG_ADD_STOP);
SNC_MUTEX_UNLOCK(&snc_mutex);
snc_i2c_close（i2c_dev）;
SENIS_del_ms(wait_delay);

/* read chip id */
SENIS_assign(da(&snc_p_fifo), &snc_fifo[0]);
SNC_i2c_open(I2C_DEV);
snc_mutex_lock（＆snc_mutex）;
snc_i2c_read（i2c_dev，ia（＆snc_p_fifo），da（＆len），snc_hw_i2c_flag_add_stop）;// len == 56〜2700
SNC_MUTEX_UNLOCK(&snc_mutex);
snc_i2c_close（i2c_dev）;

......
}

/* get rx, fifo data from SNC */
void get_snc_data（uint32_t * rxbuf，uint32_t * fifo）
{
snc_mutex_SNC_lock(&snc_mutex);
memcpy(rxbuf, snc_rxbuf, sizeof(snc_rxbuf));
memcpy(fifo, snc_fifo, sizeof(uint32_t) * len); // len == 56~2700
snc_mutex_SNC_unlock(&snc_mutex);
}
/***************************************************************************/

Thank you.

hi

In addition, Can I2C burst write on the DA1469x SNC?

please let me know.

thank you.