#include <io.h>
#include <iomacros.h>
-
//! Receive a byte.
unsigned char serial_rx(){
char c;
//! 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;
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() {
- P8SEL = 0; // disable XT2 on P8.7/8
+ int i=1000;
+ char *choice=(char *) 0x200; //First word of RAM.
+ #ifdef __MSP430_HAS_PORT8__
+ P8SEL = 0; // disable XT2 on P8.7/8
+ #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)){
+ /*
+ Info is missing, guess at a good value.
+
+ For now, the choice doesn't jump backward after a successful
+ connection. For that reason, keep this list as small as possible.
+ Future revisions will subtract one from choice[0] after a successful
+ connection, keeping choice[1] as the target.
+ */
+
+ #define CHOICES 4
+ DCOCTL = 0x00; //clear DCO
+ switch(choice[0]++%CHOICES){
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
- */
+ case 0:
+ BCSCTL1 = 0x8f; //CALBC1_16MHZ at 0x10f9
DCOCTL = 0x83; //CALDCO_16MHZ at 0x10f8
break;
+ case 1:
+ BCSCTL1 = 0x8f;
+ DCOCTL = 0x95;
+ break;
+ case 2:
+ BCSCTL1 = 0x8f;
+ DCOCTL = 0x6c;
+ break;
+ case 3:
+ BCSCTL1 = 0x8e;
+ DCOCTL = 0xdc;
+ break;
}
}
+ //Minor delay.
+ while(i--);
+
return;
}