port this code to any Cortex M0/M3/M4/M7 board.
## PROGRESS STATUS
-* Setup bare development environment [COMPLETED] --FILES: Makefile, link.d
+* Setup bare development environment [COMPLETED] -- FILES: Makefile, link.d
* Boot and jump to C [COMPLETED] -- FILES: start.asm, main.c, include/sys/mmap.h, include/sys/robsys.h
* Interrupt Handling [COMPLETED] -- FILES: ivt.c, lib/string.c
* Basic input and output (UART) [COMPLETED] -- FILES: driver/uart.c, lib/stdio.c
* Built-in-shell [COMPLETED] -- FILE: term.c
* Port printf/libc library [COMPLETED] -- FILE: lib/tinyprintf.c
* Basic drivers:
- ** EEPROM: driver/at24c.c [COMPLETED]
- ** UART drivers/uart.c [COMPLETED]
- ** LED segment display: drivers/tm1637.c [COMPLETED]
- ** Temperature sensor: drivers/tsensor.c [IN PROGRESS]
- ** OLED display [PLANNED]
- ** Joystick [PLANNED]
+ * EEPROM: drivers/at24c.c [COMPLETED]
+ * UART drivers/uart.c [COMPLETED]
+ * LED segment display: drivers/tm1637.c [COMPLETED]
+ * Temperature sensor: drivers/tsensor.c [IN PROGRESS]
+ * OLED display [PLANNED]
+ * Joystick [PLANNED]
* Memory Management [IN PROGRESS] -- FILE: lib/pool.c
* User Mode [PLANNED]
* System Call PendV implementation [PLANNED]