The Sio_poll low-level serial input/ output routines for the 8051 microcontroller are written specifically for the Keil C51 compiler. They provide simplified low-level serial hardware configuration functionality, in addition to byte-oriented RS232 transmission and reception primitives.
The implemented serial communications primitives may be called either directly, or indirectly via calls to pre-existing high-level C library functions such as puts(), printf(), getchar() and scanf().
Downloads.
| Low-level 8051 serial input/ output routines for Keil C51. – Sio_poll_0.3.zip |  |
| Low-level 8051 serial input/ output routines for Keil C51. – Sio_poll_0.5.zip | |
| Low-level 8051 serial input/ output routines for Keil C51. – Sio_poll_0.6.zip | |
| Xmodem transfer protocol routines for 8051 Keil C Compiler. – Xmodem-1.zip | |