KW40Z_Connectivity_Software_1.0.1 serial interface type

seanwu — Thu, 05 May 2016 09:52:35 GMT

Dear Sir,

I use hid_host example in KW40Z_Connectivity_Software_1.0.1

(C:\Freescale\KW40Z_Connectivity_Software_1.0.1\ConnSw\examples\bluetooth\hid_host).

I change the serial interface type from UART to I2C.

I find some the code in the function void shell_writeN(); in shell.c(Line237).

if( SHELL_IO_TYPE == gSerialMgrIICSlave_c ||

SHELL_IO_TYPE == gSerialMgrSPISlave_c )

{

uint8_t *pHdr = MEM_BufferAlloc(n+5);

if(pHdr)

{

pHdr[0] = 0x02;

pHdr[1] = 0x77;

pHdr[2] = 0x77;

pHdr[3] = n;

FLib_MemCpy(&pHdr[4], pBuff, n);

pHdr[4+n] = 0;

Serial_SyncWrite( gShellSerMgrIf, pHdr, n+5 );

MEM_BufferFree(pHdr);

}

else

{

Serial_SyncWrite(gShellSerMgrIf, (uint8_t*)pBuff, n);

}

If the type is I2C or SPI, there are 0x02, 0x77, 0x77, n(length) at the beginning , and 0 at the end of the message.

Why to define the value 0x02, 0x77,0x77, length? Could you explain it?

Thanks.

BR,

Sean Wu

Re: KW40Z_Connectivity_Software_1.0.1 serial interface type

jorge_a_vazquez — Mon, 16 May 2016 18:05:37 GMT

Hi seanwu

Sorry for the late reply, that configuration is related with the FSCI framework. You can check the CONNFWKRM.pdf located in the path {Path_KW40Z_Connectivity_Software}\ConnSw\doc In “3.10. FSCI” they explain this framework.

The next image show the packet structure.

Hope this can help you.

Best regards

Jorge Alcala

topic KW40Z_Connectivity_Software_1.0.1 serial interface type in Wireless MCU

KW40Z_Connectivity_Software_1.0.1 serial interface type

Re: KW40Z_Connectivity_Software_1.0.1 serial interface type