Hello,
I just want to tell you that the LinFlex UART implementation is almost unusable slow. It takes around 250ms to transmit a hard-coded string of just 16 characters. That's 15.625ms per character. Can somebody please look into it for the next version?
So I went ahead and implemented the code of one of your C examples and voilà it actually takes around 2.2ms now to transmit about 20 characters.
In linflexd_pnt_library.c I replaced the "void linflexd_pnt_TxMsg(...)" function with the following:
void linflexd_pnt_TxMsg(uint8_t linflexd_unit, uint8_t *u8TxData,
uint32_t u32Size) {
uint8_t j = 0; // Dummy variable
for( j=0; j < u32Size; j++ )
{
// Loop for character string
LINFlexD[linflexd_unit]->BDRL.B.DATA0 = *(u8TxData+j);
//write character to transmit buffer
while (1 != LINFlexD[linflexd_unit]->UARTSR.B.DTFTFF) {}
// Wait for data transmission completed flag
LINFlexD[linflexd_unit]->UARTSR.R = 0x0002;
// clear the DTF flag and not the other flags
}
}
Since in the old function there is this code in it:
// u32Cnt = 100000;
// while ((UART_TX_FLAG == 0) && (u32Cnt > 0))/* Wait for Data to get transmitted */
// { u32Cnt--; }
And this takes ages to complete.
Also in the "mbdtargetmainlibpnt.tlc" file, in the "void linflex_init_fnc(void)" function I commented out all of the timeout counter and output compare writes to the registers, but I did not test if this is necessary. (Now it's almost identical to the UART C example.)
Thank you again.
Best regards,
Markus Ransberger
