#include"LPC11xx.h"
#define LSR_THRE 0x20
#define LSR_TEMT 0x40
#define LSR_RDR 0x01
#define TEMT (1<<6)
int main(void) {
unsigned int regVal;
unsigned int Fdiv;
LPC_SYSCON->SYSAHBCLKCTRL |= (1<<16); /* Enable IOCON block */
LPC_IOCON->PIO1_6 &= ~0x07; //Clear the first 3 bits in the FUNC of the 'PIO1_6'
LPC_IOCON->PIO1_6 |= 0x01; //Set PIO1_6 as UART RXD
LPC_IOCON->PIO1_7 &= ~0x07; //Clear the first 3 bits in the FUNC of the 'PIO1_7'
LPC_IOCON->PIO1_7 |= 0x01; //Set PIO1_7 as UART TXD
/*Enable UART Clock*/
LPC_SYSCON->SYSAHBCLKCTRL |= (1<<12); //Enable UART clock
LPC_SYSCON->UARTCLKDIV = 0x01; //Divide by 1
LPC_UART->LCR = 0x83; //8 bits, no parity, 1 stop bit, DLAB(divisor latch access bit) = 1
regVal = LPC_SYSCON->UARTCLKDIV;
Fdiv = (((SystemCoreClock)/regVal)/16)/38400 ; /*baud rate is set to 38400,Because HC05 is set to 38400 Baud rate */
LPC_UART->DLM = Fdiv / 256;
LPC_UART->DLL = Fdiv % 256;
LPC_UART->LCR = 0x03; /* Diable latch access bit DLAB = 0 */ //Skal være 0 for at kunne skrive til THR
LPC_UART->FCR = 0x07; /* Enable and reset TX and RX FIFO. */
unsigned int i =0;
unsigned int data ;
while(1){
data = LPC_UART->LSR;
// Ensure a clean start, no data in either TX or RX FIFO.
while (( LPC_UART->LSR & (LSR_THRE|LSR_TEMT)) != (LSR_THRE|LSR_TEMT) );
while ( LPC_UART->LSR & LSR_RDR )
{
data = LPC_UART->RBR; // Dump data from RX FIFO
}
if(LPC_UART->LSR &0x01)
data = LPC_UART->RBR;
LPC_UART->THR |= data;
}
return 0 ;
}
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