stm32f4 discovery LIS3DSH HAL problem

[borisbritwa13]

Posted on February 16, 2016 at 14:14

No answer from the register who I am.

The most interesting is that this code worked for a while, but now does not work.

I have

attached a file

that previously

all worked.

/* USER CODE BEGIN 0 */ uint8_t SPI_read(uint8_t address) {     uint8_t  reciveData;     address = 0x80 | address;     CS_ON     HAL_SPI_TransmitReceive(&hspi1,&address,&reciveData,1,100);     uint8_t data=0x00;     HAL_SPI_TransmitReceive(&hspi1,&data,&reciveData,1,100);   CS_OFF     return reciveData; }  /* USER CODE END 0 */ /* USER CODE BEGIN 2 */ RED_LED_ON GREEN_LED_ON if (SPI_read(0x0F)==0x3B){     RED_LED_OFF     }else if(SPI_read(0x0F)==0x3F)//LIS3DSH     GREEN_LED_OFF  /* USER CODE END 2 */ /* SPI1 init function */ void MX_SPI1_Init(void) {   hspi1.Instance = SPI1;   hspi1.Init.Mode = SPI_MODE_MASTER;   hspi1.Init.Direction = SPI_DIRECTION_2LINES;   hspi1.Init.DataSize = SPI_DATASIZE_8BIT;   hspi1.Init.CLKPolarity = SPI_POLARITY_HIGH;   hspi1.Init.CLKPhase = SPI_PHASE_2EDGE;   hspi1.Init.NSS = SPI_NSS_SOFT;   hspi1.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_256;   hspi1.Init.FirstBit = SPI_FIRSTBIT_MSB;   hspi1.Init.TIMode = SPI_TIMODE_DISABLED;   hspi1.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLED;   hspi1.Init.CRCPolynomial = 10;   HAL_SPI_Init(&hspi1); }    

[Amel NASRI]

Posted on February 18, 2016 at 07:50

Hi britwa.boris,

Could you please precise the updates you made so that we can deduce the cause of the problem you are facing? You said that previously it was working as expected.-Mayla-

[borisbritwa13]

Posted on February 20, 2016 at 13:35

Thanks for the reply

!!!

I wrote some

code

at the top of

that

I have used.

Sensor

replied

0x3F

(see

attached file

).

Then

I turned off

the board and

turned on

later

and the answer

of who I am

-

0xff

.I

noticed

early

that the code

at the top

does not work

if

I disable

the logic analyzer

(

I do not know

why it

happened

)

.

Now the code

is not working

,

so I

did

.

Now,

if you connect a

logic analyzer

and ask

SPI_read (0x0F)

all

look the same

but

in response

I see

0xFF

.

See

has attached

file!!!!

I

think it is not necessary

any

initialization

before you read

the register

who I am

?

I am very

upset .

Initially,

perhaps

in my actions

there is an error

.

I will be glad

to your opinion .

Had to dig

in smartphones

and

unsolder

the accelerometer

another brand

(

bma150

)

Under him have to make a Board

,

because

it is very small

.

________________ Attachments : NOT_OK.jpg : https://st--c.eu10.content.force.com/sfc/dist/version/download/?oid=00Db0000000YtG6&ids=0680X000006I0ml&d=%2Fa%2F0X0000000bdd%2F3jwxa8ON69dV8nN3pyhXNoGV3roeleIMKSWKH1I4IJM&asPdf=falseSam_file.zip : https://st--c.eu10.content.force.com/sfc/dist/version/download/?oid=00Db0000000YtG6&ids=0680X000006I0mg&d=%2Fa%2F0X0000000bdb%2FuIUh19Wa2UjtpvuInQ778mTJTyycibMF9t2x09DuIHE&asPdf=false