Posted on February 21, 2014 at 22:37Hi,
I'working with USB to send data from my F3 Discovery to the PC. For that i used the CDC class. I managed to send few bytes of data using the routine below:
uint8_t TabInt[6]={80,90,88,99,10,13};
uint8_t *ptr_int=TabInt;
uint16_t Lentgh_int=sizeof(TabInt);
CDC_Send_DATA(ptr_int, sizeof(Lentgh_int));
/*--------- CDC Definition-------------*/
uint32_t CDC_Send_DATA (uint8_t *ptrBuffer, uint8_t Send_length)
{
/*if max buffer is Not reached*/
if(Send_length < VIRTUAL_COM_PORT_DATA_SIZE)
{
/*Sent flag*/
packet_sent = 0;
/* send packet to PMA*/
UserToPMABufferCopy((unsigned char*)ptrBuffer, ENDP1_TXADDR, Send_length);
SetEPTxCount(ENDP1, Send_length);
SetEPTxValid(ENDP1);
}
else
{
return 0;
}
return 1;
}
As we can see the data to be sent is declared as u8. It Tried to do the same for the data but with no success.
float_t TabKs[2]={1.215,1.245};
uint8_t *ptr_Ks=(uint8_t*)&TabKs;
uint8_t Lentgh_Ks=sizeof(TabKs);
CDC_Send_DATA(ptr_Ks, Lentgh_Ks);
Unfortunately that didn't work for me,The problem i think is that my float value is being sent as one byte and i have to reconstitute it correctly but i don'k know how. If you have an idea how can i resolve my issue, i would be grateful.
Thanks in advance.
