GitHub - gurusfp/billmac

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Name		Name	Last commit message	Last commit date
Latest commit History 91 Commits
flasher/at89s5x		flasher/at89s5x
tests		tests
units		units
.gitignore		.gitignore
README		README
assert.h		assert.h
billing.h		billing.h
config.h		config.h
crc.c		crc.c
crc.h		crc.h
delay.h		delay.h
ds1307.c		ds1307.c
eeprom.c		eeprom.c
ep_store.c		ep_store.c
ep_store.h		ep_store.h
flash.c		flash.c
flash.h		flash.h
i2c.c		i2c.c
i2c.h		i2c.h
kbd.c		kbd.c
kbd.h		kbd.h
lcd.c		lcd.c
lcd.h		lcd.h
lfsr.c		lfsr.c
main.c		main.c
main.h		main.h
menu.c		menu.c
menu.h		menu.h
printer.c		printer.c
printer.h		printer.h
uart.c		uart.c
uart.h		uart.h

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This README would serve as a scratchpad for ideas. In the bigger product, the
following features would be available

8051 based device
#################
Design is based on AT89S52 and 89V512RD (Microchip). Differences include
  * 256bytes Vs 1Kbytes RAM
  * ISP Flash programming
  * IAP support

Connectivity
############
  1. Keyboard : PS/2
  2. Barcode scanner : PS/2 or COM
  3. SD Card : SD : SPI * 2 (need FAT16 capability)
  4. Display : SPI
  5. Printer : TTL (via UART)
  6. Computer : RS232(UART)
  7. EEPROM : 24C512 * 4
  8. Weighing machine : RS232(UART)

FIXME
#####
  1. Add restore factory settings option