Content originally posted in LPCWare by terenceng on Thu Sep 15 07:03:36 MST 2011
here is the init code for xbee:-
#include "LPC17xx.h"
void Xbee_PIN_init(void)
{
//Set P0.17 (DTR) to GPIO,
LPC_PINCON->PINSEL1 |= (0 << 2);
//Set P0.18 (CTS) to GPIO
LPC_PINCON->PINSEL1 |= (0 << 4);
//Set P0.20 (RTS) to GPIO
LPC_PINCON->PINSEL1 |= (0 << 8);
//Set P0.0 to TX
LPC_PINCON->PINSEL0 |= (2 << 0);
//Set P0.1 to RX
LPC_PINCON->PINSEL0 |= (2 << 2);
//Set P0.0 and P0.1 to 10 - Pin has neither pull-up nor pull-down resistor enabled.
LPC_PINCON->PINMODE0 |= (2 << 0);
LPC_PINCON->PINMODE0 |= (0 << 2);// should not have pull down enable
}
void Xbee_init(void)
{
//Turn on Power for UART1 Interface
LPC_SC->PCONP |= (1 << 4);
//Set PCLK_UART1 to CCLK/4 - 25MHz
LPC_SC->PCLKSEL0 &= (~(3 << 8)) ;
//Set Data Format: 8 bit Data, 1 Stop Bit,
LPC_UART1->LCR |= (3 << 0);
LPC_UART1->LCR &= (~(1 << 2));
// Set BaudRate to 9600bps
LPC_UART1->LCR |= (1 << 7);
LPC_UART1->DLM = 0;
LPC_UART1->DLL = 163;
LPC_UART1->FDR = 0x10;
LPC_UART1->LCR &= (~(1 << 7));
//Enable FIFO
LPC_UART1->FCR |= (1 << 0);
//Enable Interrupts
LPC_UART1->IER |= (3 << 0);
// Enable Transmission
LPC_UART1->TER |= (1 << 7);
}
with above code...xbee still fail to communicate:(
Any others init. code needed??
