Dear NXP,
I was using S32DS to configure the baud rate of uart1 and found that the actual baud rate value did not match what I had configured.
I set the baud rate to 9600, but the actual baud rate is 4800.
baud rate configuration：
const Linflexd_Uart_Ip_UserConfigType Linflexd_Uart_Ip_xHwConfigPB_1_BOARD_INITPERIPHERALS =
{
/* Actual Baud-rate */
9600,
/* Baud-rate mantissa */
651U,
/* Baud-rate Divisor */
1U,
/* Parity control */
(boolean)FALSE,
/* Parity type */
LINFLEXD_UART_IP_PARITY_EVEN,
/* Number of stop bits, 1 stop bit (default) or 2 stop bits */
LINFLEXD_UART_IP_ONE_STOP_BIT,
/* Number of bits per transmitted/received word */
LINFLEXD_UART_IP_8_BITS,
/* Type of UART transfer (interrupt/dma based) */
LINFLEXD_UART_IP_USING_INTERRUPTS,
/* Callback to invoke for Uart events.*/
NULL_PTR,
/* User callback parameter pointer.*/
NULL_PTR,
#if (LINFLEXD_UART_IP_HAS_DMA_ENABLED == STD_ON)
/* DMA channel number for DMA-based rx. */
255,
/* DMA channel number for DMA-based tx. */
255,
#endif
/* Runtime state structure reference */
&Linflexd_Uart_Ip_apStateStructure[0U]
};
clock configuration：
LINFLEXD_CLK: 50MHz
LIN_BAUD_CLK: 100MHz
According to the chip reference manual, I brought LIN_BAUD_CLK into the formula to calculate the baud rate as 9600, but it is actually 4800
Since the actual baud rate is exactly one-half of my configuration, I'm guessing that the clock source for the baud rate calculation might be LINFLEXD_CLK. Is the LIN_CLK in the formula the corresponding LIN_BAUD_CLK? Or is there any configuration to select the clock source for LIN_CLK?
