About software implementation of UART

Dear: My project used Atmel AT89S52,and I need two UART channels. So,I need software implementation of asynchronous serial I/O. Who can tell me how to do?
Implementing I2C multimaster in software

Hi I am thinking of implementing the complete I2C Multimaster communication by software. The Microcontroller which I will be using do not have on chip I2C hardware. I know it is easy to implement the...
Implementing I2C multimaster in software

Hi I am thinking of implementing the complete I2C Multimaster communication by software. The Microcontroller which I will be using do not have on chip I2C hardware. I know it is easy to implement the...
About software implementation of UART

Dear: My project used Atmel AT89S52,and I need two UART channels. So,I need software implementation of asynchronous serial I/O. Who can tell me how to do?
Software Reset

I can generate a software reset by the following code: ((void (code *) (void)) 0x0000) (); After the reset, however, my application no longer responds to my interrupts. How can I reinizialize all...