使用DMA和I2C读取\写入LIS2DH12

嗨，我正在尝试使用I2C和DMA读取LIS2DH12。
我通过STM32CubeMx配置了所有内容。
当我想阅读LIS2DH12（WHO_AM_I @ 0x0F）时，我打电话给：
HAL_I2C_Master_Receive_DMA（＆amp; hi2c1，（uint16_t）SLAVE_ADDRESS，（uint8_t *）I2CRxBuf，1）;
我已经定义了以下内容：
SLAVE_ADDRESS 0x330F //（从地址0x33和读地址0x0F
char I2CRxBuf [5];
我等待它先完成接收：
while（HAL_I2C_GetState（＆amp; hi2c1）！= HAL_I2C_STATE_READY）;
然后在屏幕上打印该值。它始终保持为零。
我究竟做错了什么？



以下为原文




Hi, I am trying to read the LIS2DH12 using the I2C and DMA.
I got everything configured via STM32CubeMx.
When I want to read the LIS2DH12 (WHO_AM_I @0x0F) I call:
HAL_I2C_Master_Receive_DMA(&hi2c1, (uint16_t)SLAVE_ADDRESS, (uint8_t *)I2CRxBuf, 1);
I have defined the below:
SLAVE_ADDRESS 0x330F   // (slave address 0x33 and read adress 0x0F
char I2CRxBuf[5];
I wait for it to complete the receive first:
while (HAL_I2C_GetState(&hi2c1) != HAL_I2C_STATE_READY);
Then print the value on the screen. It always stay zero.
What am I doing wrong?