added new uart stuff

master
Ondřej Hruška 10 years ago
parent 312ab6d897
commit 2b38adb74d
  1. 137
      projects/uart_key_analyzer/Makefile
  2. 228
      projects/uart_key_analyzer/lib/uart.c
  3. 88
      projects/uart_key_analyzer/lib/uart.h
  4. 32
      projects/uart_key_analyzer/main.c
  5. 137
      projects/uart_keyhandler_test/Makefile
  6. 228
      projects/uart_keyhandler_test/lib/uart.c
  7. 88
      projects/uart_keyhandler_test/lib/uart.h
  8. 580
      projects/uart_keyhandler_test/lib/uart_ansi.c
  9. 192
      projects/uart_keyhandler_test/lib/uart_ansi.h
  10. 46
      projects/uart_keyhandler_test/main.c

@ -0,0 +1,137 @@
## === CPU settings ===
# CPU type
MCU = atmega328p
# CPU frequency
F_CPU = 16000000
# Fuses
LFUSE = 0xFF
HFUSE = 0xDE
EFUSE = 0x05
## === Source files ===
# Main C file
MAIN = main.c
# Extra C files in this folder
LOCAL_SOURCE =
# Library directory (with C files)
EXTRA_SOURCE_DIR = lib/
# C files in the library directory
EXTRA_SOURCE_FILES = uart.c
## === Programmer ===
PROGRAMMER_TYPE = arduino
PROGRAMMER_ARGS = -b 57600 -P /dev/ttyUSB0
## === C flags ===
CFLAGS = -std=gnu99 -mmcu=$(MCU) -DF_CPU=$(F_CPU)UL -I. -I$(EXTRA_SOURCE_DIR)
CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums
CFLAGS += -Wall -Wno-main -Wno-strict-prototypes -Wno-comment
CFLAGS += -g2 -Wextra -Wfatal-errors -Wno-unused-but-set-variable
CFLAGS += -ffunction-sections -fdata-sections -Wl,--gc-sections -Wl,--relax
# CFLAGS += -lm ## Math
# CFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm ## for floating-point printf
# CFLAGS += -Wl,-u,vfprintf -lprintf_min ## for smaller printf
CFLAGS_BUILD = $(CFLAGS) -Os
# ---------------------------------------------------------------------------
## Defined programs / locations
CC = avr-gcc
OBJCOPY = avr-objcopy
OBJDUMP = avr-objdump
AVRSIZE = avr-size
AVRDUDE = avrdude
## === File lists ===
TARGET = $(strip $(basename $(MAIN)))
SRC1 = $(TARGET).c
SRC = $(SRC1)
EXTRA_SOURCE = $(addprefix $(EXTRA_SOURCE_DIR), $(EXTRA_SOURCE_FILES))
SRC += $(EXTRA_SOURCE)
SRC += $(LOCAL_SOURCE)
HEADERS = $(SRC:.c=.h)
OBJ = $(SRC:.c=.o)
## === File generation ===
all: $(TARGET).hex size
pre: $(TARGET).pre
%.hex: %.elf
$(OBJCOPY) -R .eeprom -O ihex $< $@
%.elf: $(SRC)
$(CC) $(CFLAGS_BUILD) $(SRC) --output $@
%.pre: $(SRC1)
$(CC) $(CFLAGS) -E $(SRC1) --output $@
%.eeprom: %.elf
$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@
%.lst: %.elf
$(OBJDUMP) -S $< > $@
# Show debug info
debug:
@echo
@echo "Source files:" $(SRC)
@echo "MCU, F_CPU, BAUD:" $(MCU), $(F_CPU), $(BAUD)
@echo
# Disassemble the ELF
disassemble: $(TARGET).lst
dis: disassemble
lst: disassemble
# Make eeprom file
eeprom: $(TARGET).eeprom
# Show how big the resulting program is
size: $(TARGET).elf
$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
# Clean all produced trash
clean:
rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
$(TARGET).eeprom
# Clean all trash
purge:
rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~
## === avrdude ===
flash: $(TARGET).hex
$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
flashe: $(TARGET).eeprom
$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
shell:
$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
# === fuses ===
FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m
fuses:
$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
$(PROGRAMMER_ARGS) $(FUSE_STRING)
show_fuses:
$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv
set_default_fuses: FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m
set_default_fuses: fuses

@ -0,0 +1,228 @@
#include <avr/io.h>
#include <avr/pgmspace.h>
#include <util/delay.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdlib.h>
#include "uart.h"
void _uart_init_do(uint16_t ubrr) {
/*Set baud rate */
UBRR0H = (uint8_t) (ubrr >> 8);
UBRR0L = (uint8_t) ubrr;
// Enable Rx and Tx
UCSR0B = (1 << RXEN0) | (1 << TXEN0);
// 8-bit data, 1 stop bit
UCSR0C = (0b11 << UCSZ00);
}
/** Enable or disable RX ISR */
void uart_isr_rx(bool yes)
{
if(yes) {
UCSR0B |= (1 << RXCIE0);
} else {
UCSR0B &= ~(1 << RXCIE0);
}
}
/** Enable or disable TX ISR (1 byte is sent) */
void uart_isr_tx(bool yes)
{
if(yes) {
UCSR0B |= (1 << TXCIE0);
} else {
UCSR0B &= ~(1 << TXCIE0);
}
}
/** Enable or disable DRE ISR (all is sent) */
void uart_isr_dre(bool yes)
{
if(yes) {
UCSR0B |= (1 << UDRIE0);
} else {
UCSR0B &= ~(1 << UDRIE0);
}
}
/** Send byte over UART */
void uart_tx(uint8_t data)
{
// Wait for transmit buffer
while (!uart_tx_ready());
// send it
UDR0 = data;
}
/** Receive one byte over UART */
uint8_t uart_rx()
{
// Wait for data to be received
while (!uart_rx_ready());
// Get and return received data from buffer
return UDR0;
}
/** Send string over UART */
void uart_puts(const char* str)
{
while (*str) {
uart_tx(*str++);
}
}
/** Send progmem string over UART */
void uart_puts_pgm(const char* str)
{
char c;
while ((c = pgm_read_byte(str++))) {
uart_tx(c);
}
}
/** Clear receive buffer */
void uart_flush()
{
uint8_t dummy;
while (UCSR0A & (1 << RXC0))
dummy = UDR0;
}
/** Send CRLF */
void uart_nl()
{
uart_tx(13);
uart_tx(10);
}
char tmpstr[12]; // buffer for number rendering
void _uart_putnf(const uint8_t places);
/** Send signed int8 */
void uart_putu(const uint8_t num)
{
utoa(num, tmpstr, 10);
uart_puts(tmpstr);
}
/** Send unsigned int8 */
void uart_putn(const int8_t num)
{
itoa(num, tmpstr, 10);
uart_puts(tmpstr);
}
/** Send unsigned int as float */
void uart_putiu(const uint16_t num, const uint8_t places)
{
if (!places) {
utoa(num, tmpstr, 10);
uart_puts(tmpstr);
} else {
utoa(num, tmpstr, 10);
_uart_putnf(places);
}
}
/** Send signed int as float */
void uart_puti(const int16_t num, const uint8_t places)
{
if (!places) {
itoa(num, tmpstr, 10);
uart_puts(tmpstr);
} else {
if (num < 0) {
uart_tx('-');
itoa(-num, tmpstr, 10);
} else {
itoa(num, tmpstr, 10);
}
_uart_putnf(places);
}
}
/** Send unsigned long as float */
void uart_putlu(const uint32_t num, const uint8_t places)
{
if (!places) {
ultoa(num, tmpstr, 10);
uart_puts(tmpstr);
} else {
ultoa(num, tmpstr, 10);
_uart_putnf(places);
}
}
/** Send signed long as float */
void uart_putl(const int32_t num, const uint8_t places)
{
if (!places) {
ltoa(num, tmpstr, 10);
uart_puts(tmpstr);
} else {
if (num < 0) {
uart_tx('-');
ltoa(-num, tmpstr, 10);
} else {
ltoa(num, tmpstr, 10);
}
_uart_putnf(places);
}
}
/** Print number in tmp string as float with given decimal point position */
void _uart_putnf(const uint8_t places)
{
// measure text length
uint8_t len = 0;
while(tmpstr[len] != 0) len++;
int8_t at = len - places;
// print virtual zeros
if (at <= 0) {
uart_tx('0');
uart_tx('.');
while(at <= -1) {
uart_tx('0');
at++;
}
at = -1;
}
// print the number
uint8_t i = 0;
while(i < len) {
if (at-- == 0) {
uart_tx('.');
}
uart_tx(tmpstr[i++]);
}
}

@ -0,0 +1,88 @@
#pragma once
//
// Utilities for UART communication.
//
// First, init uart with desired baud rate using uart_init(baud).
// Then enable interrupts you want with uart_isr_XXX().
//
#include <avr/io.h>
#include <avr/pgmspace.h>
#include <util/delay.h>
#include <stdbool.h>
#include <stdint.h>
/** Init UART for given baudrate */
void _uart_init_do(uint16_t ubrr); // internal, needed for the macro.
#define uart_init(baud) _uart_init_do(F_CPU / 16 / (baud) - 1)
/** Check if there's a byte in the RX register */
#define uart_rx_ready() (0 != (UCSR0A & (1 << RXC0)))
/** Check if transmission of everything is done */
#define uart_tx_ready() (0 != (UCSR0A & (1 << UDRE0)))
// Enable UART interrupts
/** Enable or disable RX ISR */
void uart_isr_rx(bool enable);
/** Enable or disable TX ISR (1 byte is sent) */
void uart_isr_tx(bool enable);
/** Enable or disable DRE ISR (all is sent) */
void uart_isr_dre(bool enable);
// Basic IO
/** Receive one byte over UART */
uint8_t uart_rx();
/** Send byte over UART */
#define uart_putc(data) uart_tx((data))
void uart_tx(uint8_t data);
/** Clear receive buffer */
void uart_flush();
// Strings
/** Send string over UART */
void uart_puts(const char* str);
/** Send progmem string over UART */
void uart_puts_pgm(const char* str);
// Numbers
/** Send unsigned int */
void uart_putn(const int8_t num);
/** Send signed int */
void uart_putu(const uint8_t num);
/** Send unsigned int */
void uart_puti(const int16_t num, const uint8_t places);
/** Send signed int */
void uart_putiu(const uint16_t num, const uint8_t places);
/** Send unsigned long */
void uart_putlu(const uint32_t num, const uint8_t places);
/** Send signed long */
void uart_putl(const int32_t num, const uint8_t places);
// Extras
/** Send CRLF */
void uart_nl();

@ -0,0 +1,32 @@
#include <avr/io.h>
#include <util/delay.h>
#include <avr/pgmspace.h>
#include <avr/interrupt.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdlib.h>
#include "lib/uart.h"
ISR(USART_RX_vect)
{
uint8_t c = uart_rx();
uart_putc(c);
uart_putc(' ');
uart_putn(c);
uart_nl();
}
void main()
{
uart_init(9600);
uart_isr_rx(1);
sei();
uart_puts_pgm(PSTR("UART key analyzer\r\n"));
while(1);
}

@ -0,0 +1,137 @@
## === CPU settings ===
# CPU type
MCU = atmega328p
# CPU frequency
F_CPU = 16000000
# Fuses
LFUSE = 0xFF
HFUSE = 0xDE
EFUSE = 0x05
## === Source files ===
# Main C file
MAIN = main.c
# Extra C files in this folder
LOCAL_SOURCE =
# Library directory (with C files)
EXTRA_SOURCE_DIR = lib/
# C files in the library directory
EXTRA_SOURCE_FILES = uart.c uart_ansi.c
## === Programmer ===
PROGRAMMER_TYPE = arduino
PROGRAMMER_ARGS = -b 57600 -P /dev/ttyUSB0
## === C flags ===
CFLAGS = -std=gnu99 -mmcu=$(MCU) -DF_CPU=$(F_CPU)UL -I. -I$(EXTRA_SOURCE_DIR)
CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums
CFLAGS += -Wall -Wno-main -Wno-strict-prototypes -Wno-comment
CFLAGS += -g2 -Wextra -Wfatal-errors -Wno-unused-but-set-variable
CFLAGS += -ffunction-sections -fdata-sections -Wl,--gc-sections -Wl,--relax
# CFLAGS += -lm ## Math
# CFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm ## for floating-point printf
# CFLAGS += -Wl,-u,vfprintf -lprintf_min ## for smaller printf
CFLAGS_BUILD = $(CFLAGS) -Os
# ---------------------------------------------------------------------------
## Defined programs / locations
CC = avr-gcc
OBJCOPY = avr-objcopy
OBJDUMP = avr-objdump
AVRSIZE = avr-size
AVRDUDE = avrdude
## === File lists ===
TARGET = $(strip $(basename $(MAIN)))
SRC1 = $(TARGET).c
SRC = $(SRC1)
EXTRA_SOURCE = $(addprefix $(EXTRA_SOURCE_DIR), $(EXTRA_SOURCE_FILES))
SRC += $(EXTRA_SOURCE)
SRC += $(LOCAL_SOURCE)
HEADERS = $(SRC:.c=.h)
OBJ = $(SRC:.c=.o)
## === File generation ===
all: $(TARGET).hex size
pre: $(TARGET).pre
%.hex: %.elf
$(OBJCOPY) -R .eeprom -O ihex $< $@
%.elf: $(SRC)
$(CC) $(CFLAGS_BUILD) $(SRC) --output $@
%.pre: $(SRC1)
$(CC) $(CFLAGS) -E $(SRC1) --output $@
%.eeprom: %.elf
$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@
%.lst: %.elf
$(OBJDUMP) -S $< > $@
# Show debug info
debug:
@echo
@echo "Source files:" $(SRC)
@echo "MCU, F_CPU, BAUD:" $(MCU), $(F_CPU), $(BAUD)
@echo
# Disassemble the ELF
disassemble: $(TARGET).lst
dis: disassemble
lst: disassemble
# Make eeprom file
eeprom: $(TARGET).eeprom
# Show how big the resulting program is
size: $(TARGET).elf
$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
# Clean all produced trash
clean:
rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
$(TARGET).eeprom
# Clean all trash
purge:
rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~
## === avrdude ===
flash: $(TARGET).hex
$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
flashe: $(TARGET).eeprom
$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
shell:
$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
# === fuses ===
FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m
fuses:
$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
$(PROGRAMMER_ARGS) $(FUSE_STRING)
show_fuses:
$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv
set_default_fuses: FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m
set_default_fuses: fuses

@ -0,0 +1,228 @@
#include <avr/io.h>
#include <avr/pgmspace.h>
#include <util/delay.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdlib.h>
#include "uart.h"
void _uart_init_do(uint16_t ubrr) {
/*Set baud rate */
UBRR0H = (uint8_t) (ubrr >> 8);
UBRR0L = (uint8_t) ubrr;
// Enable Rx and Tx
UCSR0B = (1 << RXEN0) | (1 << TXEN0);
// 8-bit data, 1 stop bit
UCSR0C = (0b11 << UCSZ00);
}
/** Enable or disable RX ISR */
void uart_isr_rx(bool yes)
{
if(yes) {
UCSR0B |= (1 << RXCIE0);
} else {
UCSR0B &= ~(1 << RXCIE0);
}
}
/** Enable or disable TX ISR (1 byte is sent) */
void uart_isr_tx(bool yes)
{
if(yes) {
UCSR0B |= (1 << TXCIE0);
} else {
UCSR0B &= ~(1 << TXCIE0);
}
}
/** Enable or disable DRE ISR (all is sent) */
void uart_isr_dre(bool yes)
{
if(yes) {
UCSR0B |= (1 << UDRIE0);
} else {
UCSR0B &= ~(1 << UDRIE0);
}
}
/** Send byte over UART */
void uart_tx(uint8_t data)
{
// Wait for transmit buffer
while (!uart_tx_ready());
// send it
UDR0 = data;
}
/** Receive one byte over UART */
uint8_t uart_rx()
{
// Wait for data to be received
while (!uart_rx_ready());
// Get and return received data from buffer
return UDR0;
}
/** Send string over UART */
void uart_puts(const char* str)
{
while (*str) {
uart_tx(*str++);
}
}
/** Send progmem string over UART */
void uart_puts_pgm(const char* str)
{
char c;
while ((c = pgm_read_byte(str++))) {
uart_tx(c);
}
}
/** Clear receive buffer */
void uart_flush()
{
uint8_t dummy;
while (UCSR0A & (1 << RXC0))
dummy = UDR0;
}
/** Send CRLF */
void uart_nl()
{
uart_tx(13);
uart_tx(10);
}
char tmpstr[12]; // buffer for number rendering
void _uart_putnf(const uint8_t places);
/** Send signed int8 */
void uart_putu(const uint8_t num)
{
utoa(num, tmpstr, 10);
uart_puts(tmpstr);
}
/** Send unsigned int8 */
void uart_putn(const int8_t num)
{
itoa(num, tmpstr, 10);
uart_puts(tmpstr);
}
/** Send unsigned int as float */
void uart_putiu(const uint16_t num, const uint8_t places)
{
if (!places) {
utoa(num, tmpstr, 10);
uart_puts(tmpstr);
} else {
utoa(num, tmpstr, 10);
_uart_putnf(places);
}
}
/** Send signed int as float */
void uart_puti(const int16_t num, const uint8_t places)
{
if (!places) {
itoa(num, tmpstr, 10);
uart_puts(tmpstr);
} else {
if (num < 0) {
uart_tx('-');
itoa(-num, tmpstr, 10);
} else {
itoa(num, tmpstr, 10);
}
_uart_putnf(places);
}
}
/** Send unsigned long as float */
void uart_putlu(const uint32_t num, const uint8_t places)
{
if (!places) {
ultoa(num, tmpstr, 10);
uart_puts(tmpstr);
} else {
ultoa(num, tmpstr, 10);
_uart_putnf(places);
}
}
/** Send signed long as float */
void uart_putl(const int32_t num, const uint8_t places)
{
if (!places) {
ltoa(num, tmpstr, 10);
uart_puts(tmpstr);
} else {
if (num < 0) {
uart_tx('-');
ltoa(-num, tmpstr, 10);
} else {
ltoa(num, tmpstr, 10);
}
_uart_putnf(places);
}
}
/** Print number in tmp string as float with given decimal point position */
void _uart_putnf(const uint8_t places)
{
// measure text length
uint8_t len = 0;
while(tmpstr[len] != 0) len++;
int8_t at = len - places;
// print virtual zeros
if (at <= 0) {
uart_tx('0');
uart_tx('.');
while(at <= -1) {
uart_tx('0');
at++;
}
at = -1;
}
// print the number
uint8_t i = 0;
while(i < len) {
if (at-- == 0) {
uart_tx('.');
}
uart_tx(tmpstr[i++]);
}
}

@ -0,0 +1,88 @@
#pragma once
//
// Utilities for UART communication.
//
// First, init uart with desired baud rate using uart_init(baud).
// Then enable interrupts you want with uart_isr_XXX().
//
#include <avr/io.h>
#include <avr/pgmspace.h>
#include <util/delay.h>
#include <stdbool.h>
#include <stdint.h>
/** Init UART for given baudrate */
void _uart_init_do(uint16_t ubrr); // internal, needed for the macro.
#define uart_init(baud) _uart_init_do(F_CPU / 16 / (baud) - 1)
/** Check if there's a byte in the RX register */
#define uart_rx_ready() (0 != (UCSR0A & (1 << RXC0)))
/** Check if transmission of everything is done */
#define uart_tx_ready() (0 != (UCSR0A & (1 << UDRE0)))
// Enable UART interrupts
/** Enable or disable RX ISR */
void uart_isr_rx(bool enable);
/** Enable or disable TX ISR (1 byte is sent) */
void uart_isr_tx(bool enable);
/** Enable or disable DRE ISR (all is sent) */
void uart_isr_dre(bool enable);
// Basic IO
/** Receive one byte over UART */
uint8_t uart_rx();
/** Send byte over UART */
#define uart_putc(data) uart_tx((data))
void uart_tx(uint8_t data);
/** Clear receive buffer */
void uart_flush();
// Strings
/** Send string over UART */
void uart_puts(const char* str);
/** Send progmem string over UART */
void uart_puts_pgm(const char* str);
// Numbers
/** Send unsigned int */
void uart_putn(const int8_t num);
/** Send signed int */
void uart_putu(const uint8_t num);
/** Send unsigned int */
void uart_puti(const int16_t num, const uint8_t places);
/** Send signed int */
void uart_putiu(const uint16_t num, const uint8_t places);
/** Send unsigned long */
void uart_putlu(const uint32_t num, const uint8_t places);
/** Send signed long */
void uart_putl(const int32_t num, const uint8_t places);
// Extras
/** Send CRLF */
void uart_nl();

@ -0,0 +1,580 @@
#include <avr/io.h>
#include <avr/pgmspace.h>
#include <avr/interrupt.h>
#include <stdbool.h>
#include <stdint.h>
#include "uart.h"
#include "uart_ansi.h"
void _vt_apply_style();
void _vt_reset_attribs_do();
void _vt_style_do();
void _vt_color_do();
void vt_goto(uint8_t x, uint8_t y)
{
uart_putc(27);
uart_putc('[');
uart_putu(x);
uart_putc(';');
uart_putu(y);
uart_putc('H');
}
void vt_goto_x(uint8_t x)
{
uart_putc(27);
uart_putc('[');
uart_putu(x);
uart_putc('`');
}
void vt_goto_y(uint8_t y)
{
uart_putc(27);
uart_putc('[');
uart_putu(y);
uart_putc('d');
}
void vt_move(int8_t x, int8_t y)
{
vt_move_x(x);
vt_move_y(y);
}
void vt_move_x(int8_t x)
{
if (x < 0) {
vt_left(-x);
} else {
vt_right(x);
}
}
void vt_move_y(int8_t y)
{
if (y < 0) {
vt_up(-y);
} else {
vt_down(y);
}
}
void vt_up(uint8_t y)
{
if (y == 0) return;
uart_putc(27);
uart_putc('[');
uart_putu(y);
uart_putc('A');
}
void vt_down(uint8_t y)
{
if (y == 0) return;
uart_putc(27);
uart_putc('[');
uart_putu(y);
uart_putc('B');
}
void vt_left(uint8_t x)
{
if (x == 0) return;
uart_putc(27);
uart_putc('[');
uart_putu(x);
uart_putc('D');
}
void vt_right(uint8_t x)
{
if (x == 0) return;
uart_putc(27);
uart_putc('[');
uart_putu(x);
uart_putc('C');
}
void vt_scroll(int8_t y)
{
while (y < 0) {
uart_putc(27);
uart_putc('D'); // up
y++;
}
while (y > 0) {
uart_putc(27);
uart_putc('M'); // down
y--;
}
}
void vt_scroll_set(uint8_t from, uint8_t to)
{
uart_putc(27);
uart_putc('[');
uart_putu(from);
uart_putc(';');
uart_putu(to);
uart_putc('r');
}
void vt_scroll_reset()
{
uart_putc(27);
uart_putc('[');
uart_putc('r');
}
typedef struct {
uint8_t flags;
uint8_t fg;
uint8_t bg;
} vt_style_t;
vt_style_t saved_style;
vt_style_t current_style;
void vt_save()
{
uart_puts_pgm(PSTR("\x1B[s"));
saved_style = current_style;
}
void vt_restore()
{
uart_puts_pgm(PSTR("\x1B[u"));
current_style = saved_style;
}
/** Disable all text attributes (excluding color) */
void vt_attr_reset()
{
current_style.flags = 0;
_vt_reset_attribs_do();
_vt_apply_style();
}
/** Set color to white on black */
void vt_color_reset()
{
current_style.fg = VT_WHITE;
current_style.bg = VT_BLACK;
_vt_color_do();
}
/** Enable or disable a text attribute */
void vt_attr(uint8_t attribute, bool on)
{
// flags are powers of two
// so this can handle multiple OR'd flags
for(uint8_t c = 1; c <= VT_FAINT; c *= 2) {
if (attribute & c) {
if (on) {
current_style.flags |= c;
} else {
current_style.flags &= ~c;
}
}
}
_vt_apply_style();
}
/** Send style and color commands */
void _vt_apply_style()
{
_vt_reset_attribs_do();
_vt_style_do();
_vt_color_do();
}
/** Set color 0..7 */
void vt_color(uint8_t fg, uint8_t bg)
{
current_style.fg = fg;
current_style.bg = bg;
_vt_color_do();
}
/** Set FG color 0..7 */
void vt_color_fg(uint8_t fg)
{
current_style.fg = fg;
_vt_color_do();
}
/** Set BG color 0..7 */
void vt_color_bg(uint8_t bg)
{
current_style.bg = bg;
_vt_color_do();
}
/** Send reset command */
inline void _vt_reset_attribs_do()
{
uart_puts_pgm(PSTR("\x1B[m")); // reset
}
/** Send commands for text attribs */
void _vt_style_do()
{
if (current_style.flags & VT_BOLD) {
uart_puts_pgm(PSTR("\x1B[1m"));
}
if (current_style.flags & VT_FAINT) {
uart_puts_pgm(PSTR("\x1B[2m"));
}
if (current_style.flags & VT_ITALIC) {
uart_puts_pgm(PSTR("\x1B[3m"));
}
if (current_style.flags & VT_UNDERLINE) {
uart_puts_pgm(PSTR("\x1B[4m"));
}
if (current_style.flags & VT_BLINK) {
uart_puts_pgm(PSTR("\x1B[5m"));
}
if (current_style.flags & VT_REVERSE) {
uart_puts_pgm(PSTR("\x1B[7m"));
}
}
/** Send commands for xolor */
void _vt_color_do()
{
uart_putc(27);
uart_putc('[');
uart_putu(30 + current_style.fg);
uart_putc(';');
uart_putu(40 + current_style.bg);
uart_putc('m');
}
/** Insert blank lines febore the current line */
void vt_insert_lines(uint8_t count)
{
uart_putc(27);
uart_putc('[');
uart_putu(count);
uart_putc('L');
}
/** Delete lines from the current line down */
void vt_delete_lines(uint8_t count)
{
uart_putc(27);
uart_putc('[');
uart_putu(count);
uart_putc('M');
}
/** Insert empty characters at cursor */
void vt_insert_chars(uint8_t count)
{
uart_putc(27);
uart_putc('[');
uart_putu(count);
uart_putc('@');
}
/** Delete characters at cursor */
void vt_delete_chars(uint8_t count)
{
uart_putc(27);
uart_putc('[');
uart_putu(count);
uart_putc('P');
}
void vt_clear()
{
uart_puts_pgm(PSTR("\x1B[2J"));
}
void vt_erase_forth()
{
uart_puts_pgm(PSTR("\x1B[K"));
}
void vt_erase_back()
{
uart_puts_pgm(PSTR("\x1B[1K"));
}
void vt_erase_line()
{
uart_puts_pgm(PSTR("\x1B[2K"));
}
void vt_erase_above()
{
uart_puts_pgm(PSTR("\x1B[1J"));
}
void vt_erase_below()
{
uart_puts_pgm(PSTR("\x1B[J"));
}
void vt_home()
{
uart_puts_pgm(PSTR("\x1B[H"));
}
/** Initialize helper variables */
void vt_init()
{
vt_reset();
}
/** Reset state and clear screen */
void vt_reset()
{
// reset color and attributes
vt_color_reset();
vt_attr_reset();
vt_scroll_reset();
// clear screen
vt_clear();
// go to top left
vt_home();
// overwrite saved state
vt_save();
}
// Assigned keyhandler
void (*_vt_kh)(uint8_t, bool) = NULL;
/** Assign a key handler (later used with vt_handle_key) */
void vt_set_key_handler(void (*handler)(uint8_t, bool))
{
_vt_kh = handler;
}
// state machine states
typedef enum {
GROUND = 0,
ESC = 1,
BR = 2,
O = 3,
WAITING_TILDE = 4
} KSTATE;
// code received before started to wait for a tilde
uint8_t _before_wtilde;
// current state
KSTATE _kstate = GROUND;
void _vt_kh_abort()
{
switch (_kstate) {
case ESC:
_vt_kh(VK_ESC, true);
break;
case BR:
_vt_kh(VK_ESC, true);
_vt_kh('[', false);
break;
case O:
_vt_kh(VK_ESC, true);
_vt_kh('O', false);
break;
case WAITING_TILDE:
_vt_kh(VK_ESC, true);
_vt_kh('[', false);
vt_handle_key(_before_wtilde);
break;
case GROUND:
// nop
break;
}
_kstate = GROUND;
}
/**
* Handle a key received over UART
* Takes care of multi-byte keys and translates them to special
* constants.
*/
void vt_handle_key(uint8_t c)
{
if (_vt_kh == NULL) return;
switch (_kstate) {
case GROUND:
switch (c) {
case 27:
_kstate = ESC;
break;
case VK_ENTER:
case VK_TAB:
case VK_BACKSPACE:
_vt_kh(c, true);
return;
default:
_vt_kh(c, false);
return;
}
break; // continue to next char
case ESC:
switch (c) {
case '[':
_kstate = BR;
break; // continue to next char
case 'O':
_kstate = O;
break; // continue to next char
default:
// bad code
_vt_kh_abort();
vt_handle_key(c);
return;
}
break;
case BR:
switch (c) {
// arrows
case 65:
case 66:
case 67:
case 68:
_vt_kh(c, true);
_kstate = GROUND;
return;
// ins del pgup pgdn
case 50:
case 51:
case 53:
case 54:
// wait for terminating tilde
_before_wtilde = c;
_kstate = WAITING_TILDE;
break; // continue to next char
// bad key
default:
_vt_kh_abort();
vt_handle_key(c);
return;
}
break;
case O:
switch (c) {
// F keys
case 80:
case 81:
case 82:
case 83:
// home, end
case 72:
case 70:
_vt_kh(c, true);
_kstate = GROUND;
return;
// bad key
default:
_vt_kh_abort();
vt_handle_key(c);
return;
}
case WAITING_TILDE:
if (c != '~') {
_vt_kh_abort();
vt_handle_key(c);
return;
} else {
_vt_kh(_before_wtilde, true);
_kstate = GROUND;
return;
}
}
// wait for next key
if (_kstate != GROUND) {
_delay_ms(2);
if (!uart_rx_ready()) {
// abort receiving
_vt_kh_abort();
} else {
vt_handle_key(uart_rx());
}
}
}

@ -0,0 +1,192 @@
#pragma once
//
// ANSI / VT100 utilities for UART
//
// To use this, first call uart_init(baud) and vt_init()
// To print stuff on the screen, use uart_puts() etc from uart.h
//
#include <avr/io.h>
#include <stdlib.h>
#include <stdbool.h>
#include <stdint.h>
#include "uart.h"
// INIT
/** Initialize helper variables */
void vt_init();
/** Reset state and clear screen */
void vt_reset();
// CURSOR MOVE
/** Move cursor to top left corner */
void vt_home();
/** Jump to a location on the screen */
void vt_goto(uint8_t x, uint8_t y);
/** Jump to given X, keep Y */
void vt_goto_x(uint8_t x);
/** Jump to given Y, keep X */
void vt_goto_y(uint8_t y);
/** Move cursor relative to current location */
void vt_move(int8_t x, int8_t y);
/** Move cursor horizontally */
void vt_move_x(int8_t x);
/** Move cursor vertically */
void vt_move_y(int8_t y);
/** Move cursor up y cells */
void vt_up(uint8_t y);
/** Move cursor down y cells */
void vt_down(uint8_t y);
/** Move cursor left x cells */
void vt_left(uint8_t x);
/** Move cursor right x cells */
void vt_right(uint8_t x);
// SCROLLING
/** Scroll y lines down (like up/down, but moves window if needed) */
void vt_scroll(int8_t down);
/** Set scrolling region (lines) */
void vt_scroll_set(uint8_t from, uint8_t to);
/** Sets scrolling region to the entire screen. */
void vt_scroll_reset();
// COLOR
#define VT_BLACK 0
#define VT_RED 1
#define VT_GREEN 2
#define VT_YELLOW 3
#define VT_BLUE 4
#define VT_MAGENTA 5
#define VT_CYAN 6
#define VT_WHITE 7
/** Set color 0..7 */
void vt_color(uint8_t fg, uint8_t bg);
/** Set FG color 0..7 */
void vt_color_fg(uint8_t fg);
/** Set BG color 0..7 */
void vt_color_bg(uint8_t bg);
/** Set color to white on black */
void vt_color_reset();
// STYLES
#define VT_BOLD 1
#define VT_UNDERLINE 2
#define VT_BLINK 4
#define VT_REVERSE 8
#define VT_ITALIC 16
#define VT_FAINT 32
/** Enable or disable a text attribute */
void vt_attr(uint8_t attribute, bool on);
/** Disable all text attributes (excluding color) */
void vt_attr_reset();
// SAVE & RESTORE
/** Save cursor position & text attributes */
void vt_save();
/** Restore cursor to saved values */
void vt_restore();
// MODIFY
/** Insert blank lines febore the current line */
void vt_insert_lines(uint8_t count);
/** Delete lines from the current line down */
void vt_delete_lines(uint8_t count);
/** Insert empty characters at cursor */
void vt_insert_chars(uint8_t count);
/** Delete characters at cursor */
void vt_delete_chars(uint8_t count);
// ERASING
/** Clear the screen */
void vt_clear();
/** Erase to the end of line */
void vt_erase_forth();
/** Erase line to cursor */
void vt_erase_back();
/** Erase entire line */
void vt_erase_line();
/** Erase screen below the line */
void vt_erase_above();
/** Erase screen above the line */
void vt_erase_below();
// KEY HANDLER
// Special keys from key handler
#define VK_LEFT 68
#define VK_RIGHT 67
#define VK_UP 65
#define VK_DOWN 66
#define VK_DELETE 51
#define VK_INSERT 50
#define VK_PGUP 53
#define VK_PGDN 54
#define VK_HOME 72
#define VK_END 70
#define VK_F1 80
#define VK_F2 81
#define VK_F3 82
#define VK_F4 83
#define VK_BACKSPACE 8
#define VK_TAB 9
#define VK_ENTER 13
#define VK_ESC 27
void vt_handle_key(uint8_t c);
void vt_set_key_handler(void (*handler)(uint8_t, bool));

@ -0,0 +1,46 @@
#include <avr/io.h>
#include <util/delay.h>
#include <avr/pgmspace.h>
#include <avr/interrupt.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdlib.h>
#include "lib/uart.h"
#include "lib/uart_ansi.h"
ISR(USART_RX_vect)
{
vt_handle_key(uart_rx());
}
void key_handler(uint8_t code, bool special)
{
if (special) {
uart_puts_pgm(PSTR("Special key: "));
} else {
uart_puts_pgm(PSTR("Character: "));
}
uart_putc(code);
uart_putc(32);
uart_putu(code);
uart_nl();
}
void main()
{
uart_init(9600);
uart_isr_rx(1);
vt_init();
vt_set_key_handler(&key_handler);
sei();
uart_puts_pgm(PSTR("UART key handler test!\r\n"));
while(1);
}
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