PRELIMINARY
CY8CNP102B, CY8CNP102E
Document #: 001-43991 Rev. *D
Page 8 of 38
Online Help System
The online help system displays online, context sensitive help for
the user. Designed for procedural and quick reference, each
functional subsystem has its own context sensitive help. This
system also provides tutorials and links to FAQs and an Online
Support Forum to aid the designer in getting started.
Hardware Tools
In-Circuit Emulator
A low cost, high functionality ICE (In-Circuit Emulator) is
available for development support. This hardware has the
capability to program single devices.
The emulator consists of a base unit that connects to the PC
through the USB port. The base unit is universal and operates
with all PSoC devices. Emulation pods for each device family are
available separately. The emulation pod takes the place of the
PSoC device in the target board and performs full speed
(24 MHz) operation.
Designing with User Modules
The development process for the PSoC device differs from that
of a traditional fixed function microprocessor. The configurable
analog and digital hardware blocks give the PSoC architecture a
unique flexibility that manages specification change during
development and lowers inventory costs. These configurable
resources, called PSoC Blocks, implement a wide variety of
user-selectable functions. Each block has several registers that
determine its function and connectivity to other blocks,
multiplexers, buses, and to the IO pins. Iterative development
cycles permit you to adapt the hardware and the software. This
substantially lowers the risk of selecting a different part to meet
the final design requirements.
To speed the development process, the PSoC Designer IDE
provides a library of prebuilt, pretested hardware peripheral
functions, called “User Modules.” User modules simplify
selecting and implementing peripheral devices, and come in
analog, digital, and mixed signal varieties. The standard User
Module library contains over 50 peripherals such as ADCs,
DACs, Timers, Counters, UARTs, nvSRAM, DTMF Generators,
and Bi-Quad analog filter sections.
Each user module establishes the basic register settings that
implement the selected function. It also provides parameters that
enable you to tailor its precise configuration to your particular
application. For example, a Pulse Width Modulator User Module
configures one or more digital PSoC blocks, one for each 8 bits
of resolution. The user module parameters permit you to
establish the pulse width and duty cycle. User modules also
provide tested software to cut your development time. The user
module Application Programming Interface (API) provides high
level functions to control and respond to hardware events at run
time. The API also provides optional interrupt service routines
that you can adapt as needed.
The API functions are documented in user module data sheets
that are viewed directly in the PSoC Designer IDE. These data
sheets explain the internal operation of the user module and
provide performance specifications. Each data sheet describes
the use of each user module parameter and documents the
setting of each register controlled by the user module.
The development process starts when you open a new project
and bring up the Device Editor, which is a graphical user
interface (GUI) for configuring the hardware. Pick the user
modules required for your project and map them onto the PSoC
blocks with point and click simplicity. Next, build signal chains by
interconnecting user modules to each other and to the IO pins.
At this stage, configure the clock source connections and enter
parameter values directly or by selecting values from drop down
menus. When you are ready to test the hardware configuration
or develop code for the project, perform the “Generate
Application” step. PSoC Designer generates source code that
automatically configures the device to your specification and
provides high level user module API functions.
User Module and Source Code Development Flows
The next step is to write the main program, and any subroutine
using PSoC Designer’s Application Editor subsystem. The
Application Editor includes a Project Manager that enables you
to open the project source code files (including all generated
code files) from a hierarchal view. The source code editor
provides syntax coloring and advanced edit features for C and
assembly language. File search capabilities include simple string
searches and recursive “grep-style” patterns. A single mouse
click invokes the Build Manager.
It employs a professional strength “makefile” system to
automatically analyze all file dependencies and run the compiler
and assembler as necessary. Project level options control
optimization strategies used by the compiler and linker. Syntax
errors are displayed in a console window. Double clicking the
error message takes you directly to the offending line of source
code. After correction, the linker builds a HEX file image suitable
for programming.
Figure 3. User Module and Source Code Development Flows
Debugger
Interface
to ICE
Application Editor
Device Editor
Project
Manager
Source
Code
Editor
Storage
Inspector
User
Module
Selection
Placement
and
Parameter
-ization
Generate
Application
Build
All
Event &
Breakpoint
Manager
Build
Manager
Source
Code
Generator
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