#include "platform.h"
+#include "dco_calib.h"
+
#include <signal.h>
#include <io.h>
#include <iomacros.h>
-
//! Receive a byte.
-unsigned char serial_rx(){
+unsigned char serial0_rx(){
char c;
while(!(IFG2&UCA0RXIFG));//wait for a byte
}
//! Transmit a byte.
-void serial_tx(unsigned char x){
+void serial0_tx(unsigned char x){
while ((IFG2 & UCA0TXIFG) == 0); //loop until buffer is free
UCA0TXBUF = x; /* send the character */
while(!(IFG2 & UCA0TXIFG));
}
//! Set the baud rate.
-void setbaud(unsigned char rate){
+void setbaud0(unsigned char rate){
//Table 15-4, page 481 of 2xx Family Guide
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
-
- break;
- case 2://19200 baud
- break;
- case 3://38400 baud
-
- break;
- case 4://57600 baud
-
- break;
- default:
- case 5://115200 baud
-
- break;
- }
}
#define BAUD0EN 0x41
#define BAUD1EN 0x03
void msp430_init_uart(){
-
+
// Serial on P3.4, P3.5
P3SEL |= BIT4 + BIT5;
P3DIR |= BIT4;
-
+
//UCA0CTL1 |= UCSWRST; /* disable UART */
-
+
UCA0CTL0 = 0x00;
//UCA0CTL0 |= UCMSB ;
-
+
UCA0CTL1 |= UCSSEL_2; // SMCLK
-
+
//UCA0BR0 = BAUD0EN; // 115200
//UCA0BR1 = BAUD1EN;
setbaud(5);//default baud, 115200
-
+
UCA0MCTL = 0; // Modulation UCBRSx = 5
UCA0CTL1 &= ~UCSWRST; // **Initialize USCI state machine**
-
-
+
+
//Leave this commented!
//Interrupt is handled by target code, not by bootloader.
//IE2 |= UCA0RXIE;
}
-/* Info Flash Values
-CALDCO_16MHZ 0xdc CALBC1_16MHZ 0x8e 2274-000.txt
-CALDCO_16MHZ 0x74 CALBC1_16MHZ 0x8f 2618-000.txt
-CALDCO_16MHZ 0x6c CALBC1_16MHZ 0x8f 2618-001.txt
-CALDCO_16MHZ 0x97 CALBC1_16MHZ 0x8f 2618-002.txt
-CALDCO_16MHZ 0x6c CALBC1_16MHZ 0x8f 2618-003.txt
-CALDCO_16MHZ 0x95 CALBC1_16MHZ 0x8f 2618-004.txt
-CALDCO_16MHZ 0xcc CALBC1_16MHZ 0x8e 2618-005.txt
-CALDCO_16MHZ 0x87 CALBC1_16MHZ 0x8f 2618-006.txt
-CALDCO_16MHZ 0x96 CALBC1_16MHZ 0x8f 2619-001.txt
-*/
+
+//! Initialization is correct.
+void msp430_init_dco_done(){
+ char *choice=(char *) 0x200; //First word of RAM.
+ choice[0]--;
+}
//! Initialize the MSP430 clock.
void msp430_init_dco() {
+ int i=1000;
+ char *choice=(char *) 0x200; //First word of RAM.
+
#ifdef __MSP430_HAS_PORT8__
P8SEL = 0; // disable XT2 on P8.7/8
#endif
+ //Set P2.6 mode for MSP430F2274
+ #ifndef __MSP430_HAS_PORT5__
+ P2SEL = 0; //disable XIN on 2274
+ #endif
+
+
if(CALBC1_16MHZ!=0xFF){
//Info is intact, use it.
BCSCTL1 = CALBC1_16MHZ;
DCOCTL = CALDCO_16MHZ;
}else{
- //Info is missing, guess at a good value.
- switch(*((int*)0xff0)){
- default:
- case 0x6ff2: //f26f, the MSP430F2618
- DCOCTL = 0x00;
- #ifndef DCOVAL
- #define DCOVAL 0x8f
- #endif
- BCSCTL1 = DCOVAL; //CALBC1_16MHZ at 0x10f9
- /** Observed DCOCTL values:
- 2618: 7f, 97
- */
- DCOCTL = 0x83; //CALDCO_16MHZ at 0x10f8
- break;
- }
+ /*
+ Info is missing, guess at a good value.
+
+ A list of correct calibrations in included as dco_calib.c,
+ generated by script.
+ */
+ DCOCTL = 0x00; //clear DCO
+
+ BCSCTL1 = dco_calibrations[2*choice[0]+1];
+ DCOCTL = dco_calibrations[2*choice[0]];
+ choice[0]++;
+ choice[0]%=dco_calibrations_count;
}
+ //Minor delay.
+ while(i--);
+
+
+
return;
}