Hi Team:
I'm using S32K144 and configure the baudrate of spi2 to 100K through PE tools（refer to the attached image）, I want to dynamically configure the speed of spi2 to 50K/20K/10K/5K during the device running.
The following is the test code:
//***********************************************
uint32_t baud2;
status_t ret_sts;
lpspi_master_config_t spiConfig1;
spiConfig1.bitsPerSec = 10000; //10Kbps baudrate
spiConfig1.whichPcs = LPSPI_PCS2;
spiConfig1.pcsPolarity = LPSPI_ACTIVE_LOW;
spiConfig1.isPcsContinuous = false;
spiConfig1.bitcount = 16;
spiConfig1.clkPhase = LPSPI_CLOCK_PHASE_1ST_EDGE;
spiConfig1.clkPolarity = LPSPI_SCK_ACTIVE_HIGH;
spiConfig1.lsbFirst= false;
spiConfig1.transferType = LPSPI_USING_INTERRUPTS;
ret_sts = LPSPI_DRV_MasterConfigureBus(LPSPICOM2, (lpspi_master_config_t *)&spiConfig1, &baud2);
printf("ret_sts = %d,baud2=%d\r\n",ret_sts,baud2);
//****************************************************
After running, printf output: ret_sts = 1,baud2=0
so LPSPI_DRV_MasterConfigureBus() return STATUS_ERROR, trace into it and find the STATUS_ERROR is caused by the following code:
//****************************************************
if ((spiConfig->bitcount < 8U) || (spiConfig->bitcount > 4096U))
{
printf("spi bitcount=%d\r\n",spiConfig->bitcount);
return STATUS_ERROR;
}
//****************************************************
Then output spi bitcount=0 , but the actual value of bitcount should be equal to 16.
May I ask where my method went wrong?
How to achieve dynamic configuration of SPI baudrate?
Thank you for your suggestion.
Best regards,
Fed
