#167: argument of type ''const BYTE '' is incompatible with parameter of type ''uint8_t ''??

antonius · ‎2016-02-02

Posted on February 02, 2016 at 15:34

Guys,

Is there anyway to convert Byte to uint8_t ?

I got this error :

..\Src\user_diskio.c(171): error: #167: argument of type ''const BYTE *'' is incompatible with parameter of type ''uint8_t *''

static

void xmit_spi_multi (

const BYTE *p, /* Data block to be sent */

UINT cnt

)

{

while(HAL_SPI_GetState(&hspi2) != HAL_SPI_STATE_READY);

HAL_SPI_Transmit(&hspi2,p,cnt,100);

}

thanks

hbarta2 · ‎2016-02-02

Posted on February 02, 2016 at 16:10

Is the problem BYTE vs. uint8_t or const?

HAL_StatusTypeDef HAL_SPI_Transmit(SPI_HandleTypeDef *hspi, uint8_t *pData, uint16_t Size, uint32_t Timeout);

HAL_SPI_Transmit() does not expect a pointer to const data. IMO this is a bug in the library and I really hope thatHAL_SPI_Transmit() does not modify the data that pData points to.

I would just cast away constness:

HAL_SPI_Transmit(&hspi2,(BYTE*)p,cnt,100); or

HAL_SPI_Transmit(&hspi2,(uint8_t *)p,cnt,100);

Hope this works and hope this helps.

antonius · ‎2016-02-02

Posted on February 02, 2016 at 21:47

It does the job....hopefully the code will run...

it can be compiled, but I will see if it's running or not...

I'll keep posting

Thanks

#167: argument of type ''const BYTE *'' is incompatible with parameter of type ''uint8_t *''??

#167: argument of type ''const BYTE '' is incompatible with parameter of type ''uint8_t ''??