| Line 6... |
Line 6... |
//--------------------------------------------------//
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//--------------------------------------------------//
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// Delay function //
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// Delay function //
|
//--------------------------------------------------//
|
//--------------------------------------------------//
|
void delay(unsigned int d) {
|
void delay(unsigned int d) {
|
while(d--) {
|
while(d--) {
|
nop();
|
__nop();
|
nop();
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__nop();
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}
|
}
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}
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}
|
|
|
//--------------------------------------------------//
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//--------------------------------------------------//
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// putChar function //
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// tty_putc function //
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// (Send a byte to the UART) //
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// (Send a byte to the UART) //
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//--------------------------------------------------//
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//--------------------------------------------------//
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int putchar (int txdata) {
|
int tty_putc (int txdata) {
|
|
|
// Wait until the TX buffer is not full
|
// Wait until the TX buffer is not full
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while (UART_STAT & UART_TX_FULL);
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while (UART_STAT & UART_TX_FULL);
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|
|
// Write the output character
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// Write the output character
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| Line 69... |
Line 69... |
// delay(65535); // Some delay
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// delay(65535); // Some delay
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//delay(65535);
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//delay(65535);
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|
|
P3OUT = 0x00; // Switch off LED
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P3OUT = 0x00; // Switch off LED
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|
|
printf("\r\n====== openMSP430 in action ======\r\n"); //say hello
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cprintf("\r\n====== openMSP430 in action ======\r\n"); //say hello
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printf("\r\nSimple Line Editor Ready\r\n");
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cprintf("\r\nSimple Line Editor Ready\r\n");
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|
|
eint(); // Enable interrupts
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eint(); // Enable interrupts
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|
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while (1) { //main loop, never ends...
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while (1) { //main loop, never ends...
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|
|
printf("> "); //show prompt
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cprintf("> "); //show prompt
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reading = 1;
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reading = 1;
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while (reading) { //loop and read characters
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while (reading) { //loop and read characters
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|
|
LPM0; //sync, wakeup by irq
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LPM0; //sync, wakeup by irq
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|
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| Line 92... |
Line 92... |
|
|
switch (rxdata) {
|
switch (rxdata) {
|
//process RETURN key
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//process RETURN key
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case '\r':
|
case '\r':
|
//case '\n':
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//case '\n':
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printf("\r\n"); //finish line
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cprintf("\r\n"); //finish line
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buf[pos++] = 0; //to use printf...
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buf[pos++] = 0; //to use cprintf...
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printf(":%s\r\n", buf);
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cprintf(":%s\r\n", buf);
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reading = 0; //exit read loop
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reading = 0; //exit read loop
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pos = 0; //reset buffer
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pos = 0; //reset buffer
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break;
|
break;
|
//backspace
|
//backspace
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case '\b':
|
case '\b':
|
if (pos > 0) { //is there a char to delete?
|
if (pos > 0) { //is there a char to delete?
|
pos--; //remove it in buffer
|
pos--; //remove it in buffer
|
putchar('\b'); //go back
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tty_putc('\b'); //go back
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putchar(' '); //erase on screen
|
tty_putc(' '); //erase on screen
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putchar('\b'); //go back
|
tty_putc('\b'); //go back
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}
|
}
|
break;
|
break;
|
//other characters
|
//other characters
|
default:
|
default:
|
//only store characters if buffer has space
|
//only store characters if buffer has space
|
if (pos < sizeof(buf)) {
|
if (pos < sizeof(buf)) {
|
putchar(rxdata); //echo
|
tty_putc(rxdata); //echo
|
buf[pos++] = rxdata; //store
|
buf[pos++] = rxdata; //store
|
}
|
}
|
}
|
}
|
}
|
}
|
}
|
}
|
}
|
}
|
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|
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No newline at end of file
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No newline at end of file
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