/**
* @brief Set UART line configuration
*
* @param[in] uart The pointer of the specified UART module.
* @param[in] u32baudrate The register value of baudrate of UART module.
* If u32baudrate = 0, UART baudrate will not change.
* @param[in] u32data_width The data length of UART module.
* - UART_WORD_LEN_5
* - UART_WORD_LEN_6
* - UART_WORD_LEN_7
* - UART_WORD_LEN_8
* @param[in] u32parity The parity setting (none/odd/even/mark/space) of UART module.
* - UART_PARITY_NONE
* - UART_PARITY_ODD
* - UART_PARITY_EVEN
* - UART_PARITY_MARK
* - UART_PARITY_SPACE
* @param[in] u32stop_bits The stop bit length (1/1.5/2 bit) of UART module.
* - UART_STOP_BIT_1
* - UART_STOP_BIT_1_5
* - UART_STOP_BIT_2
*
* @return None
*
* @details This function use to config UART line setting.
*/
void UART_SetLine_Config(UART_T* uart, uint32_t u32baudrate, uint32_t u32data_width, uint32_t u32parity, uint32_t u32stop_bits)
{
uint8_t u8UartClkSrcSel, u8UartClkDivNum;
uint32_t u32ClkTbl[4] = {__HXT, 0, 0, __HIRC};
uint32_t u32Baud_Div = 0;
/* Get UART clock source selection */
u8UartClkSrcSel = (CLK->CLKSEL1 & CLK_CLKSEL1_UART_S_Msk) >> CLK_CLKSEL1_UART_S_Pos;
/* Get UART clock divider number */
u8UartClkDivNum = (CLK->CLKDIV & CLK_CLKDIV_UART_N_Msk) >> CLK_CLKDIV_UART_N_Pos;
/* Get PLL clock frequency if UART clock source selection is PLL */
if(u8UartClkSrcSel == 1)
u32ClkTbl[u8UartClkSrcSel] = CLK_GetPLLClockFreq();
/* Set UART baud rate */
if(u32baudrate != 0)
{
u32Baud_Div = UART_BAUD_MODE2_DIVIDER((u32ClkTbl[u8UartClkSrcSel]) / (u8UartClkDivNum + 1), u32baudrate);
if(u32Baud_Div > 0xFFFF)
uart->BAUD = (UART_BAUD_MODE0 | UART_BAUD_MODE0_DIVIDER((u32ClkTbl[u8UartClkSrcSel]) / (u8UartClkDivNum + 1), u32baudrate));
else
uart->BAUD = (UART_BAUD_MODE2 | u32Baud_Div);
}
/* Set UART line configuration */
uart->LCR = u32data_width | u32parity | u32stop_bits;
}
void UART0_Init(void)
{
/* Word length is 8 bits; 1 stop bit; no parity bit. */
UART0->LINE = UART_WORD_LEN_8 | UART_PARITY_NONE | UART_STOP_BIT_1;
/* UART peripheral clock rate 12MHz; UART bit rate 115200 bps. */
UART0->BAUD = UART_BAUD_MODE2 | UART_BAUD_MODE2_DIVIDER(__HXT, 115200);
}
void UART0_Init(void)
{
/*---------------------------------------------------------------------------------------------------------*/
/* Init UART */
/*---------------------------------------------------------------------------------------------------------*/
UART0->BAUD = UART_BAUD_MODE2 | UART_BAUD_MODE2_DIVIDER(PLL_CLOCK, 115200);
UART0->LCR = UART_WORD_LEN_8 | UART_PARITY_NONE | UART_STOP_BIT_1;
}
/*---------------------------------------------------------------------------------------------------------*/
void LIN_FunctionTestUsingLinCtlReg(void)
{
uint32_t u32Item;
/* LIN Max Speed is 20K */
UART1->BAUD = UART_BAUD_MODE2 | UART_BAUD_MODE2_DIVIDER(__HXT, 9600);
/* === CASE 1====
The sample code will send a LIN header with a 12-bit break field,
0x55 sync field and ID field is 0x30. Measurement the UART1 Tx pin to check it.
*/
/* === CASE 2====
The sample code will send a LIN header with ID is 0x35 and response field.
The response field with 8 data bytes and checksum without including ID.
Measurement the UART1 Tx pin to check it.
*/
/* === CASE 3====
The sample code will send a LIN header with ID is 0x12 and response field.
The response field with 8 data bytes and checksum with including ID.
Measurement the UART1 Tx pin to check it.
*/
do
{
LIN_TestItem();
u32Item = getchar();
printf("%c\n", u32Item);
switch(u32Item)
{
case '1':
LIN_SendHeaderUsingLinCtlReg(0x30, UART_LIN_CTL_LIN_HEAD_SEL_BREAK_SYNC_ID);
break;
case '2':
LIN_MasterTestUsingLinCtlReg(0x35, MODE_CLASSIC);
break;
case '3':
LIN_MasterTestUsingLinCtlReg(0x12, MODE_ENHANCED);
break;
default:
break;
}
}
while(u32Item != 27);
/* Clear header select setting */
UART1->LIN_CTL &= ~UART_LIN_CTL_LIN_HEAD_SEL_Msk;
/* Select UART function mode */
UART1->FUN_SEL = UART_FUNC_SEL_UART;
printf("\nLIN Sample Code End.\n");
}
void UART0_Init(void)
{
/*---------------------------------------------------------------------------------------------------------*/
/* Init UART */
/*---------------------------------------------------------------------------------------------------------*/
/* Reset UART IP */
SYS->IPRST1 |= SYS_IPRST1_UART0RST_Msk;
SYS->IPRST1 &= ~SYS_IPRST1_UART0RST_Msk;
/* Configure UART0 and set UART0 Baudrate */
UART0->BAUD = UART_BAUD_MODE2 | UART_BAUD_MODE2_DIVIDER(__HXT, 115200);
UART0->LINE = UART_WORD_LEN_8 | UART_PARITY_NONE | UART_STOP_BIT_1;
}
void UART1_Init()
{
/*---------------------------------------------------------------------------------------------------------*/
/* Init UART */
/*---------------------------------------------------------------------------------------------------------*/
/* Reset UART IP */
SYS->IPRSTC2 |= SYS_IPRSTC2_UART1_RST_Msk;
SYS->IPRSTC2 &= ~SYS_IPRSTC2_UART1_RST_Msk;
/* Configure UART1 and set UART1 Baudrate */
UART1->BAUD = UART_BAUD_MODE2 | UART_BAUD_MODE2_DIVIDER(__HXT, 115200);
UART1->LCR = UART_WORD_LEN_8 | UART_PARITY_NONE | UART_STOP_BIT_1;
}
void UART0_Init(void)
{
/*---------------------------------------------------------------------------------------------------------*/
/* Init UART */
/*---------------------------------------------------------------------------------------------------------*/
/* Reset UART */
SYS->IPRSTC2 |= SYS_IPRSTC2_UART0_RST_Msk;
SYS->IPRSTC2 &= ~SYS_IPRSTC2_UART0_RST_Msk;
/* Configure UART0 and set UART0 Baudrate */
UART0->BAUD = UART_BAUD_MODE2 | UART_BAUD_MODE2_DIVIDER(PllClock, 115200);
UART0->LCR = UART_WORD_LEN_8 | UART_PARITY_NONE | UART_STOP_BIT_1;
}
void begin(unsigned long baud)
{
if(settings.UARToutput == Settings::HardwarePin7) {
SYS->P3_MFP = (SYS->P3_MFP & (~SYS_MFP_P31_Msk)) | SYS_MFP_P31_TXD0; //Tx on pin 7
} else {
SYS->P0_MFP = (SYS->P0_MFP & (~SYS_MFP_P02_Msk)) | SYS_MFP_P02_TXD0; //Tx on pin 38
}
/* Configure UART0 and set UART0 Baudrate */
UART0->BAUD = UART_BAUD_MODE2 | UART_BAUD_MODE2_DIVIDER(__HXT, baud);
UART0->LCR = UART_WORD_LEN_8 | UART_PARITY_NONE | UART_STOP_BIT_1;
UART0->IER = UART_IER_THRE_IEN_Msk;
NVIC_SetPriority(UART0_IRQn,HARDWARE_SERIAL_IRQ_PRIORITY);
}
void UART0_Init(void)
{
/*---------------------------------------------------------------------------------------------------------*/
/* Init UART */
/*---------------------------------------------------------------------------------------------------------*/
/* Reset IP */
SYS->IPRSTC2 |= SYS_IPRSTC2_UART0_RST_Msk;
SYS->IPRSTC2 &= ~SYS_IPRSTC2_UART0_RST_Msk;
/* Configure UART0 and set UART0 Baudrate */
UART0->BAUD = UART_BAUD_MODE2 | UART_BAUD_MODE2_DIVIDER(__HIRC, 115200);
UART0->LCR = UART_WORD_LEN_8 | UART_PARITY_NONE | UART_STOP_BIT_1;
/* Enable UART Interrupt */
UART0->IER = UART_IER_TOUT_IEN_Msk | UART_IER_RDA_IEN_Msk;
}
/**
* @brief Open and set UART function
*
* @param[in] uart The pointer of the specified UART module.
* @param[in] u32baudrate The baudrate of UART module.
*
* @return None
*
* @details This function use to enable UART function and set baud-rate.
*/
void UART_Open(UART_T* uart, uint32_t u32baudrate)
{
uint8_t u8UartClkSrcSel, u8UartClkDivNum;
uint32_t u32ClkTbl[4] = {__HXT, 0, 0, __HIRC};
uint32_t u32Baud_Div = 0;
/* Get UART clock source selection */
u8UartClkSrcSel = (CLK->CLKSEL1 & CLK_CLKSEL1_UART_S_Msk) >> CLK_CLKSEL1_UART_S_Pos;
/* Get UART clock divider number */
u8UartClkDivNum = (CLK->CLKDIV & CLK_CLKDIV_UART_N_Msk) >> CLK_CLKDIV_UART_N_Pos;
/* Select UART function */
uart->FUN_SEL = UART_FUNC_SEL_UART;
/* Set UART line configuration */
uart->LCR = UART_WORD_LEN_8 | UART_PARITY_NONE | UART_STOP_BIT_1;
/* Set UART Rx and RTS trigger level */
uart->FCR &= ~(UART_FCR_RFITL_Msk | UART_FCR_RTS_TRI_LEV_Msk);
/* Get PLL clock frequency if UART clock source selection is PLL */
if(u8UartClkSrcSel == 1)
u32ClkTbl[u8UartClkSrcSel] = CLK_GetPLLClockFreq();
/* Set UART baud rate */
if(u32baudrate != 0)
{
u32Baud_Div = UART_BAUD_MODE2_DIVIDER((u32ClkTbl[u8UartClkSrcSel]) / (u8UartClkDivNum + 1), u32baudrate);
if(u32Baud_Div > 0xFFFF)
uart->BAUD = (UART_BAUD_MODE0 | UART_BAUD_MODE0_DIVIDER((u32ClkTbl[u8UartClkSrcSel]) / (u8UartClkDivNum + 1), u32baudrate));
else
uart->BAUD = (UART_BAUD_MODE2 | u32Baud_Div);
}
}