Problem with LIS3DSH

[alexder]

Hello, it's code correct for  testing WHO_I_AM? LED doesn't work 

#define LIS3DH_CS_LOW()  HAL_GPIO_WritePin(GPIOE, GPIO_PIN_3, GPIO_PIN_RESET)
#define LIS3DH_CS_HIGH() HAL_GPIO_WritePin(GPIOE, GPIO_PIN_3, GPIO_PIN_SET)
#define LIS3DH_WHO_AM_I_REG  0x0F
#define LIS3DH_READ_CMD      0x80
uint8_t LIS3DH_ReadWhoAmI(void)
{
    uint8_t txData = LIS3DH_WHO_AM_I_REG | LIS3DH_READ_CMD;
    uint8_t rxData = 0;

    LIS3DH_CS_LOW();
    HAL_SPI_Transmit(&hspi1, &txData, 1, HAL_MAX_DELAY);
    HAL_SPI_Receive(&hspi1, &rxData, 2, HAL_MAX_DELAY);
    LIS3DH_CS_HIGH();

    if (rxData == 0x33) {
           HAL_GPIO_WritePin(GPIOD, GPIO_PIN_12, GPIO_PIN_SET);


}
  return rxData;
}

[Andrew Neil]

Welcome to the forum,

We need further details of your setup - see How to write your question to maximize your chances to find a solution .

---

@alexder wrote:

LED doesn't work 

---

So what investigation/testing/debugging have you done to find out why it doesn't work?

• Can you just turn the LED on/off separately from any accelerometer code ?
• Are you getting the WHO_AM_I value?
• Have you checked the SPI lines with an oscilloscope and/or analyser to see what's happening?

PS:

---

@alexder wrote:

    HAL_SPI_Receive(&hspi1, &rxData, 2, HAL_MAX_DELAY);

---

Why 2 ?

[alexder]

1) separately(LED) it's  working 

2) this is the problem, I'm testing with  LED

[Andrew Neil]

You still haven't given any details of your setup!

Again, please see  How to write your question to maximize your chances to find a solution.

So what investigation/testing/debugging have you done to find out why it doesn't work?

• Are you getting the WHO_AM_I value?
• Have you checked the SPI lines with an oscilloscope and/or analyser to see what's happening?

    HAL_SPI_Receive(&hspi1, &rxData, 2, HAL_MAX_DELAY);

---

Why 2 ?

Have you looked at C-Driver-MEMS ?

https://www.st.com/en/embedded-software/c-driver-mems.html 

[alexder]

that***

my board is stm32F407G-DISC1

[Andrew Neil]

It's really difficult when you just drip-feed information like this.

Please provide full details, as described in How to write your question to maximize your chances to find a solution:

1. [Part Number] Always state the FULL Part Number of the product used <-- now done, thanks.

2. [Environment] Describe the environment used as toolchain and hardware and state the version used.
3. [Schematics] If it is a custom board --> Share the schematics using “Attach file” option or inserting some image.
4. [Details] Describe the symptoms observed (examples: error messages, wrong behavior, screenshots of signals…).
5. [Expected behavior] If the question is related to performance then what is the target.
6. [How to reproduce] Detail the steps you have taken to get the behavior seen and clarify the set-up [Input, Output].
7. [Occurrence] Is the problem systematic? If not, state the frequency.
8. [Sanity checks] What are the checks that you have already performed (example: Have you reviewed the existing examples - GitHub, Cube...).

Please take time to consider all the questions asked so far, and give a full reply.

[alexder]

okay,  full - details:

• STM32F407G-DISC1
• STM32CubeIDE, STM32MX
• LED doesn't working when,  if ( == 0x33)  this means that the result is not returned, i think it's problem with code or  LIS3DSH
• -
• STM32CubeIDE, -  0 errors
• -
• i trying , BSP driver - same
• bsp driver i found only, for old revision, if there is, can you provide a link

[Andrew Neil]

You still have not:

1. Given version details of the tools.
   
   
2. Showed how you have the LIS3DSH connected to the Disco board:
   Show schematic;
   Is the LIS3DSH on a breakout board? Is so, give details; link to manufacturer's page;
   Some good, clear photos would help.
    
3. Answered whether you get the WHO_AM_I value from the sensor - or, in fact, any value..
    
4. Described any investigation/debugging that you've done to find the problem;
   eg, check the SPI lines with an oscilloscope and/or analyser to see what's happening

[alexder]

okay,  full - details:

• STM32F407G-DISC1
• STM32CubeIDE, STM32MX
• LED doesn't working when,  if ( == 0x33)  this means that the result is not returned, i think it's problem with code or  LIS3DSH
• -
• STM32CubeIDE, -  0 errors
• -
• i trying , BSP driver - same
• bsp driver i found only, for old revision, if there is, can you provide a link

[Andrew Neil]

No, you still haven't answered 

Remember that we know nothing about you or your project other than what you clearly describe in your post.

Be clear.

Be complete.

Give details - don't leave us guessing.