Embedded Systems Updates

You need to use the two timers respective registers (timer 0 and timer 1 reg) to write the appropriate count value (TH0/1;TL0/1). Then use the TMOD register to set the modes in which you want to operate the two timers. The set the timer run bit in your code, the timers will start. Monitor the TCON register to check for timer overflows or you can lso use timer interrutps to rest and start the timer again.

Embedded systems are typically tiny and the programmer handles the whole system with a single program. However in a larger systems with complex and heavy weight application multiple processes created. To become a system level programmer pick up an application of your choice (for e.g in networking control plane protocol implementation )

Start with learning the digital system fundamentals, realize counters, timers, arithimatic logic, then get into assembly based programming for e.g MIPS based architecture. Then learn about various memory management technique, boot loader, Device driver implementation so that a whole system / product can be constructed (e.g.IoT devices)

Embedded systems which has a timeline target in responding to stimulus / inputs come under the class real-time whereby most of the time the scheduler support pre-emption mechanism. And in the case of reactive scenario the output response is connected the inputs / triggers (e.g. PWM modulator output is based on the analog amplitude of in the analog input signal fed to the A/D module of the system)

These communication protocols help the processor/controller to either communicate with other devices like senors, other processors/controllers and also to write to other devices. For example CAN is a communication protocol widely used in autmotive sectors.

Each of these protocols have their own way of communicating or set of rules while communicating which will make the process of muoltiple devices communicate with one another easier.