#include "config.h"
#include "pic_utils.h"
#include "pic_serial.h"
#include <string.h>
#include <stdlib.h>
Go to the source code of this file.
Functions | |
uns8 | bin2Hex (uns8 x) |
uns8 | serial_getc (void) |
Retrieve a character from the serial port. | |
void | serial_print_int (uns16 i) |
Print a 16 bit number to the serial port. | |
void | serial_print_int_hex (uns8 i) |
Print an 8 bit number in hex to the serial port. | |
void | serial_print_nl () |
Print a newline. | |
void | serial_print_spc () |
Print a space. | |
void | serial_print_str (rom char *str) |
Print a rom string out to the serial port. | |
void | serial_print_str (char *str) |
Print a string out to the serial port. | |
void | serial_putc (uns8 c) |
Transmit a single character. | |
uns8 | serial_rx_avail () |
Tests if the serial rx fifo has a character available. | |
void | serial_rx_isr () |
Serial receive interrupt service routine. | |
void | serial_setup (bit req_brgh, uns8 req_spbrg) |
Configure the pic for serial communicaitons. | |
uns8 | serial_tx_empty () |
Tests if the serial tx fifo is empty. | |
void | serial_tx_isr () |
Serial transmit interrupt service routine. | |
Variables | |
uns8 | rx_buffer [SERIAL_RX_BUFFER_SIZE] |
uns8 | rx_end = 0 |
uns8 | rx_start = 0 |
uns8 | tx_buffer [SERIAL_TX_BUFFER_SIZE] |
uns8 | tx_end = 0 |
uns8 | tx_start = 0 |
Definition in file pic_serial.c.
uns8 bin2Hex | ( | uns8 | x | ) | [inline] |
Definition at line 48 of file pic_serial.c.
Referenced by serial_print_int_hex().
uns8 serial_getc | ( | void | ) |
Retrieve character from the serial port. Note that if there is nothing in the fifo, this function will wait until a character is received - and this will never happen if interrupts are turned off when this is called! So, be careful not to call getc during a critical section or during an ISR unless* you're sure there's something in the fifo. You can do this by calling the serial_rx_avail() routine. In any other situation, you can call getc() and happily wait for a character to arrive.
Definition at line 216 of file pic_serial.c.
References end_crit_sec, rx_buffer, rx_end, rx_start, start_crit_sec, and uns8.
void serial_print_int | ( | uns16 | i | ) |
Print a 16 bit unsigned number in decimal to the serial port
i | the 16 bit number to be printed |
Definition at line 262 of file pic_serial.c.
References serial_putc(), and uns8.
Referenced by pkt_print_packet(), pkt_process_tx_queue(), and pkt_queue_packet().
void serial_print_int_hex | ( | uns8 | i | ) |
Print a 8 bit unsigned number in hex to the serial port
i | 8 bit number to be printed |
Definition at line 283 of file pic_serial.c.
References bin2Hex(), serial_putc(), and uns8.
Referenced by i2c_write_eeprom().
void serial_print_nl | ( | ) |
Print a new line out the serial port - if you do this often, this routine can be used to save a couple of instructions. Always helps!
Definition at line 300 of file pic_serial.c.
References serial_putc().
void serial_print_spc | ( | ) |
Print a space out the serial port - if you do this often, this routine can be used to save a couple of instructions. Always helps!
Definition at line 295 of file pic_serial.c.
References serial_putc().
Referenced by i2c_write_eeprom().
void serial_print_str | ( | rom char * | str | ) |
Send a null terminated rom string out the serial port
str | the rom string to be sent |
Definition at line 250 of file pic_serial.c.
References serial_putc(), and uns8.
void serial_print_str | ( | char * | str | ) |
Send a null terminated string out the serial port
str | the string to be sent |
Definition at line 238 of file pic_serial.c.
References serial_putc(), and uns8.
Referenced by i2c_write_eeprom(), pkt_load_rx(), pkt_print_packet(), pkt_process_tx_queue(), pkt_queue_packet(), pkt_send(), and pkt_send_packet().
void serial_putc | ( | uns8 | c | ) |
Sends a single character out the serial connection. It is sent straight out if possible, otherwise put into the fifo. Note that if you fill the fifo while interrupts are off (eg, in an interrupt routine or a critical section) then this routine will hang the pic, since it's waiting for an interrupt to clear the fifo, which never comes... The moral is to keep your fifo big enough or don't send too much while interrupts are off (eg, in an interrupt response routine). Of course, you *can* send things in an ISR - just don't fill the fifo up.
c | the character to transmit |
Definition at line 122 of file pic_serial.c.
References kill_interrupts, tx_buffer, tx_end, tx_start, and uns8.
Referenced by pkt_print_packet(), serial_print_int(), serial_print_int_hex(), serial_print_nl(), serial_print_spc(), and serial_print_str().
uns8 serial_rx_avail | ( | ) |
Tests to see if the serial receive fifo has a character available. Useful to call before getc() if interrupts are not enabled in that section of code.
Definition at line 306 of file pic_serial.c.
void serial_rx_isr | ( | ) |
void serial_setup | ( | bit | req_brgh, | |
uns8 | req_spbrg | |||
) |
Configures the pic and gets ready for interrupt-driven serial communications. Includes setting the tris bits appropriately, and getting the baud rate generator set up. After calling this you can immediately start sending and receiving bytes.
brgh | refer to your pic documentation | |
spbrg | refer to your pic documentation |
Definition at line 58 of file pic_serial.c.
References kill_interrupts.
uns8 serial_tx_empty | ( | ) |
Tests to see if the serial transmit fifo is empty.
Definition at line 307 of file pic_serial.c.
void serial_tx_isr | ( | ) |
uns8 rx_buffer[SERIAL_RX_BUFFER_SIZE] |
Receive fifo
Definition at line 31 of file pic_serial.c.
Referenced by serial_getc(), and serial_rx_isr().
uns8 rx_end = 0 |
Receive fifo end point
Definition at line 35 of file pic_serial.c.
Referenced by serial_getc(), serial_rx_avail(), and serial_rx_isr().
uns8 rx_start = 0 |
Receive fifo start point
Definition at line 33 of file pic_serial.c.
Referenced by serial_getc(), serial_rx_avail(), and serial_rx_isr().
uns8 tx_buffer[SERIAL_TX_BUFFER_SIZE] |
Transmit fifo
Definition at line 24 of file pic_serial.c.
Referenced by pkt_send_packet(), serial_putc(), and serial_tx_isr().
uns8 tx_end = 0 |
Transmit fifo end point
Definition at line 28 of file pic_serial.c.
Referenced by serial_putc(), serial_tx_empty(), and serial_tx_isr().
uns8 tx_start = 0 |
Transmit fifo start point
Definition at line 26 of file pic_serial.c.
Referenced by serial_putc(), serial_tx_empty(), and serial_tx_isr().