#include <io.h>
#include <iomacros.h>
-
//! Receive a byte.
-unsigned char serial_rx(){
+unsigned char serial0_rx(){
char c;
while(!(IFG1&URXIFG0));//wait for a byte
return c;
}
-
//! Transmit a byte.
-void serial_tx(unsigned char x){
+void serial0_tx(unsigned char x){
while ((IFG1 & UTXIFG0) == 0); //loop until buffer is free
TXBUF0 = x;
}
TXBUF1 = x;
}
+/** Later, add support for the EZ430/FETUIF with 12MHz crystal
+ UBR00=0xE2; UBR10=0x04; UMCTL0=0x00; // uart0 12000000Hz 9600bps
+ UBR00=0x71; UBR10=0x02; UMCTL0=0x00; // uart0 12000000Hz 19200bps
+ UBR00=0x38; UBR10=0x01; UMCTL0=0x55; // uart0 12000000Hz 38400bps
+ UBR00=0xD0; UBR10=0x00; UMCTL0=0x4A; // uart0 12000000Hz 57581bps
+ UBR00=0x68; UBR10=0x00; UMCTL0=0x04; // uart0 12000000Hz 115273bps
+ */
+
//! Set the baud rate.
-void setbaud(unsigned char rate){
+void setbaud0(unsigned char rate){
//http://mspgcc.sourceforge.net/baudrate.html
switch(rate){
//! Set the baud rate of the second uart.
void setbaud1(unsigned char rate){
-
//http://mspgcc.sourceforge.net/baudrate.html
switch(rate){
case 1://9600 baud
}
-void msp430_init_uart(){
+void msp430_init_uart0(){
+ /* RS232 */
P3SEL |= BIT4|BIT5; // P3.4,5 = USART0 TXD/RXD
P3DIR |= BIT4;
UCTL0 = SWRST | CHAR; /* 8-bit character, UART mode */
UTCTL0 = SSEL1; /* UCLK = MCLK */
- setbaud(0);
+ setbaud0(0);
- //Necessary for bit-banging, switch to hardware for performance.
ME1 &= ~USPIE0; /* USART1 SPI module disable */
ME1 |= (UTXE0 | URXE0); /* Enable USART1 TXD/RXD */
}
+void msp430_init_uart1(){
+
+ /* RS232 */
+ P3DIR &= ~0x80; /* Select P37 for input (UART1RX) */
+ P3DIR |= 0x40; /* Select P36 for output (UART1TX) */
+ P3SEL |= 0xC0; /* Select P36,P37 for UART1{TX,RX} */
+
+ UCTL1 = SWRST | CHAR; /* 8-bit character, UART mode */
+ UTCTL1 = SSEL1; /* UCLK = MCLK */
+
+ setbaud1(0);
+
+ ME2 &= ~USPIE1; /* USART1 SPI module disable */
+ ME2 |= (UTXE1 | URXE1); /* Enable USART1 TXD/RXD */
+
+ UCTL1 &= ~SWRST;
+
+ /* XXX Clear pending interrupts before enable!!! */
+ U1TCTL |= URXSE;
+
+ //IE2 |= URXIE1; /* Enable USART1 RX interrupt */
+}
+
+
+/** For EZ430/FETUIF
+ void msp430_init_dco() {
+ WDTCTL = WDTPW + WDTHOLD; //stop WDT
+
+ BCSCTL1 = 0;
+
+ do {
+ int i;
+ IFG1 &= ~OFIFG;
+ for (i=0; i<1000; i++);
+
+ } while (IFG1 & OFIFG);
+
+ BCSCTL2 = SELM1 | DIVM1 | SELS;
+
+}
+ */
+
+
+//! Initialization is correct.
+void msp430_init_dco_done(){
+ //Nothing to do for the 1612.
+}
+
+
void msp430_init_dco() {
- /* This code taken from the FU Berlin sources and reformatted. */
+/* This code taken from the FU Berlin sources and reformatted. */
//
//Works well.
//#define MSP430_CPU_SPEED 4915200UL
//Max speed.
-//#deefine MSP430_CPU_SPEED 4500000UL
+//#define MSP430_CPU_SPEED 4500000UL
//baud rate speed
#define MSP430_CPU_SPEED 3683400UL
BCSCTL2 = 0x00; /* Init FLL to desired frequency using the 32762Hz
crystal DCO frquenzy = 2,4576 MHz */
- P1OUT|=1;
+ PLEDOUT|=PLEDPIN;
BCSCTL1 |= DIVA1 + DIVA0; /* ACLK = LFXT1CLK/8 */
for(i = 0xffff; i > 0; i--) { /* Delay for XTAL to settle */
BCSCTL1 &= ~(DIVA1 + DIVA0); /* remove /8 divisor from ACLK again */
- P1OUT=0;
+ PLEDOUT=~PLEDPIN;
+
}