Hi
My problem about LPC 1125 UART1 / UART2
. IDE : LPCXpresso V 8.22
.DEMO Board: OM13080
.I need 3 Uarts .
With Example “ periph_uart_rb” Project in lpcopen_2_17_lpcxpresso_nxp_lpcxpresso_1125.zip,
TEST UART0, It work very well。 AS I initialize UART1 & UART2 and test , They can not work well.
I need your HELP ,Thank you very much !!!
Owen
///////////////////////////////////////////////////////////////////////////////////////////////////////////////
I find the differents among UART0 / UART1/ UART2:
(1)Initialize Pin_Mux
static void Init_UART_PinMux(void) // UART0
{
Chip_IOCON_PinMuxSet(LPC_IOCON, IOCON_PIO1_6, (IOCON_FUNC1 | IOCON_MODE_INACT | IOCON_DIGMODE_EN)); /* RXD */
Chip_IOCON_PinMuxSet(LPC_IOCON, IOCON_PIO1_7, (IOCON_FUNC1 | IOCON_MODE_INACT | IOCON_DIGMODE_EN)); /* TXD */
}
static void Init_UART_PinMux(void)//UART1
{
Chip_IOCON_PinMuxSet(LPC_IOCON, IOCON_PIO0_7, (IOCON_FUNC3 | IOCON_MODE_INACT | IOCON_DIGMODE_EN)); /* RXD */
Chip_IOCON_PinMuxSet(LPC_IOCON, IOCON_PIO0_6, (IOCON_FUNC3 | IOCON_MODE_INACT | IOCON_DIGMODE_EN)); /* TXD */
}
static void Init_UART_PinMux(void)//UART2
{
Chip_IOCON_PinMuxSet(LPC_IOCON, IOCON_PIO0_3, (IOCON_FUNC3 | IOCON_MODE_INACT | IOCON_DIGMODE_EN)); /* RXD */
Chip_IOCON_PinMuxSet(LPC_IOCON, IOCON_PIO1_8, (IOCON_FUNC3 | IOCON_MODE_INACT | IOCON_DIGMODE_EN)); /* TXD */
}
(2)UART interrupt handler
void UART_IRQHandler(void)// UART0
{
}
void UART1_IRQHandler(void)// UART1
{
}
void UART1_IRQHandler(void)// UART1
{
}
(3)Chip_UART_Init
// The following FUNCTION only init UART0 ,In clock_112x.h do not define SYSCON_CLOCK_UART1 ，SYSCON_CLOCK_UART2
void Chip_UART_Init(LPC_UART_T *pUART) ;
{
Chip_Clock_EnablePeriphClock(SYSCON_CLOCK_UART0); // uart0
Chip_Clock_SetUARTClockDiv(1); // LPC_SYSCON->UART0CLKDIV = div;
/* Enable FIFOs by default, reset them */
Chip_UART_SetupFIFOS(pUART, (UART_FCR_FIFO_EN | UART_FCR_RX_RS | UART_FCR_TX_RS));
/* Default 8N1, with DLAB disabled */
Chip_UART_ConfigData(pUART, (UART_LCR_WLEN8 | UART_LCR_SBS_1BIT | UART_LCR_PARITY_DIS));
/* Disable fractional divider */
pUART->FDR = 0x10;
}
If i intialize UART1 、 UART2 The function “ void Chip_UART_Init(LPC_UART_T *pUART) ” need modify:
void Chip_UART1_Init(LPC_UART_T *pUART) ;
{
Chip_Clock_EnablePeriphClock(SYSCON_CLOCK_UART1); // uart1
LPC_SYSCON->UART1CLKDIV = div;
...
}
void Chip_UART2_Init(LPC_UART_T *pUART) ;
{
Chip_Clock_EnablePeriphClock(SYSCON_CLOCK_UART2); // uart2
LPC_SYSCON->UART2CLKDIV = div;
...
}
Thanks a lot!
