69 lines
1.6 KiB
C
69 lines
1.6 KiB
C
#include <libs/serialdebug.h>
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#if SERIALDEBUG_USE_INTS
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#include <avr/interrupt.h>
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#endif
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void serial_configure(void) {
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// Configure serial output
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SERIALDEBUG_SOFT_TX_PORT |= (1<<SERIALDEBUG_SOFT_TX_BIT);
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SERIALDEBUG_SOFT_TX_DDR |= (1<<SERIALDEBUG_SOFT_TX_BIT);
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fdev_setup_stream(&serialdebug_usartout, usart_putchar, NULL, _FDEV_SETUP_WRITE);
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stdout = &serialdebug_usartout;
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}
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int usart_putchar (char c, FILE *stream) {
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#if SERIALDEBUG_USE_INTS
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cli();
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#endif
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// Print 1 char to serial
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uint8_t bit_mask;
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// start bit
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SERIALDEBUG_SOFT_TX_PORT &= ~(1<<SERIALDEBUG_SOFT_TX_BIT);
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_delay_us(SERIALDEBUG_MICROSECONDS_PER_BIT);
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// data bits
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for (bit_mask=0x01; bit_mask; bit_mask<<=1) {
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if (c & bit_mask) {
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SERIALDEBUG_SOFT_TX_PORT |= (1<<SERIALDEBUG_SOFT_TX_BIT);
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}
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else {
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SERIALDEBUG_SOFT_TX_PORT &= ~(1<<SERIALDEBUG_SOFT_TX_BIT);
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}
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_delay_us(SERIALDEBUG_MICROSECONDS_PER_BIT);
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}
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// stop bit(s)
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SERIALDEBUG_SOFT_TX_PORT |= (1<<SERIALDEBUG_SOFT_TX_BIT);
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_delay_us(SERIALDEBUG_MICROSECONDS_PER_BIT * SERIALDEBUG_STOP_BITS);
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#if SERIALDEBUG_USE_INTS
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sei();
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#endif
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return c;
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}
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void dbg_putstring(char string[]) {
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// Print a string of arbitrary length to serial
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int i=0;
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while (string[i] != '\0') {
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usart_putchar(string[i], &serialdebug_usartout);
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i++;
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}
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}
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void dbg_putstring_nl(char string[]) {
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if(string) dbg_putstring(string);
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dbg_putstring("\n");
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}
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void dbg_putint(unsigned int num) {
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// Create string representing int and print to serial
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char c[7];
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itoa(num, c, 10);
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dbg_putstring(c);
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}
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