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8051 Micro Programming

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8051 Programming Information

For 8051 programming I have been using SDCC a freeware 8051 C compiler

This compiler is open source and continuously improving, Great work guys!

Currently I have been working on a project involving the Cygnal C8051F020 for my final year project at university.
This is like an 8051 on steroids. At 22MHz a NOP and many other instructions take just 47ns :).

They also have a significant number of on chip resources such as ADC and DAC,s and timers. Certainlly a significant improvments over old 8051's. The other nice feature is the 64K flash on chip for program memory.

see www.cygnal.com for more information

Files

Here is some routines I have written and find useful. You are welcome to use these any purpose and if you find any bugs or make any improvments please leave a message on my comments page.
NOTE: A few of these have work arounds for older versions of sdcc and haven't been updated but most should be fine

Filename	Description	Updated	Comments
c8051f020.h	NEW Include file for the Cygnal C8051F020. Minor buigs corrected since previous version	29/5/2004	Tested with SDCC
ADC_LTC1298.zip	Driver for the LTC1298 12-bit Serial ADC chip	20/04/2001	Tested with SDCC
ADC_TLC548.zip	Driver for the TLC548 8-bit Serial ADC chip	30/12/2001	Tested with SDCC
basicRS232_v1.0.zip	Very simple serial routines that don't use the 8051 serial interrupt. Great for debug output due to the low overhead.	20/04/2001	Tested with SDCC
rwlcd_v0.2.zip	This is a general purpose driver for alphanumeric LCD displays (HD44780 based) that has a list of compiletime options to support both 4 and 8 bit operation, connection to a port or memory map, and many others. NOTE: only 4-bit / on a IO port has been tested in hardware at this stage	20/05/2001	Tested with SDCC
sw_pwm_v0.1.zip	A software PWM generator, uses a timer interrupt to generate PWM waveforms on 8051 variants that don't have builtin PWM generators	20/05/2001	Tested with SDCC