programming in c and c multiple choice questions

Ngày tải lên: 12/08/2014, 21:20

Ngày tải lên: 12/08/2014, 21:20

Ngày tải lên: 12/08/2014, 21:20

Ngày tải lên: 12/08/2014, 21:20

Ngày tải lên: 12/08/2014, 21:20

Ngày tải lên: 12/08/2014, 21:20

Ngày tải lên: 12/08/2014, 21:20

Ngày tải lên: 12/08/2014, 21:20

Ngày tải lên: 12/08/2014, 21:20

Ngày tải lên: 12/08/2014, 21:20

... Serial Controller 149 Chapter 10. Optimizing Your Code 151 10.1 Increasing Code Efficiency 151 10.2 Decreasing Code Size 154 10.3 Reducing Memory Usage 156 10.4 Limiting the Impact of C+ + 157 ... running the same software in a simulator. If Programming Embedded Systems in C and C+ + - 44 - you should see is the C source code for main, with a cursor indicating that the embedded processor's ... The hardware-specific constant CYCLES_PER_MS represents the number of decrement -and- test cycles (nCycles != 0) that the processor can perform in a single millisecond. To determine this number...

Ngày tải lên: 17/03/2014, 13:20

... seriously. In some cases, two or more of the criteria are linked. For example, increases in processing power could lead to increased production costs. Conversely, we might imagine that the same increase ... for use in a line of business calculators produced by the Japanese company Busicom. In 1969, Busicom asked Intel to design a set of custom integrated circuits-one for each of their new calculator ... equivalent device that does not contain the processor and software. This could be done by replacing the combination with a custom integrated circuit that performs the same functions in hardware....

Ngày tải lên: 05/08/2014, 10:21

... T0CMPB (PCB_BASE + 0x34) #define T0CON (PCB_BASE + 0x36) #define T1CNT (PCB_BASE + 0x38) #define T1CMPA (PCB_BASE + 0x3A) #define T1CMPB (PCB_BASE + 0x 3C) #define T1CON (PCB_BASE + 0x3E) #define ... 0x 0C) #define REQST (PCB_BASE + 0x0E) #define INSTS (PCB_BASE + 0x10) /* * Timer/Counters */ #define TCUCON (PCB_BASE + 0x12) #define T0CNT (PCB_BASE + 0x30) #define T0CMPA (PCB_BASE + 0x32) #define ... 0x52) #define P1CON (PCB_BASE + 0x54) #define P1LTCH (PCB_BASE + 0x56) #define P2DIR (PCB_BASE + 0x58) #define P2PIN (PCB_BASE + 0x5A) #define P2CON (PCB_BASE + 0x 5C) #define P2LTCH (PCB_BASE + 0x5E) Other...

Ngày tải lên: 05/08/2014, 10:21

... device. Both of these solutions work very well in practice. 6.3.2 Cyclic Redundancy Codes A cyclic redundancy code (CRC) is a specific checksum algorithm that is designed to detect the most common ... off having some way to confirm that the device is working and that the data it contains is valid. That's where checksums and cyclic redundancy codes come in. 6.3.1 Checksums How can we tell ... device being verified. This makes insertion of the checksum easy-just compute the checksum and insert it into the memory image prior to programming the memory device. When you recalculate the checksum,...

Ngày tải lên: 05/08/2014, 10:21

... remainder; } } /* crcInit() */ Finally, we arrive at the actual workhorse routine, crcCompute. This is a routine that you can call over and over from your application to compute and verify CRC checksums. ... checksums. An additional benefit of splitting the computation between crcInit and crcCompute is that the crcInit function need not be executed on the embedded system. Instead, this function can ... contained within the 80188EB processor. I have chosen to implement this driver -and all of the remaining examples in the book -in C+ +. Although C+ + offers no additional assistance over C in accessing...

Ngày tải lên: 05/08/2014, 10:21

... the routines contextInit and os.readyList.insert. The contextInit routine establishes the initial context for a task. This routine is necessarily processor-specific and, therefore, written in assembly ... system. 8.2.3 Context Switch The actual process of changing from one task to another is called a context switch. Because contexts are processor- specific, so is the code that implements the context switch. ... virtue of the fact that it no longer exists! A third scheduling point is called the clock tick. The clock tick is a periodic event that is triggered by a timer interrupt. The clock tick provides...

Ngày tải lên: 05/08/2014, 10:21

... constructor. This routine is responsible for initializing the three private data members and configuring the requested data channel within the SCC hardware: #include "scc.h" static SCC scc; /********************************************************************** ... execute during that interval. So we want and need a mechanism to protect critical sections within tasks without disabling interrupts. And mutexes provide that mechanism. Deadlock and Priority Inversion Mutexes ... the associated interrupt service routine. When an interrupt occurs, the processor must take several steps before executing the ISR. First, the processor must finish executing the current instruction....

Ngày tải lên: 05/08/2014, 10:21