Datasheet
Table Of Contents
- PICkit™ Serial Analyzer User's Guide
- Trademarks
- Table of Contents
- Chapter 1. PICkit™ Serial Analyzer Overview
- 1.1 Introduction
- 1.2 Highlights
- 1.3 PICkit™ Serial Analyzer Contents
- 1.4 PICkit™ Serial Analyzer Development System
- 1.5 PICkit™ Serial Analyzer Hardware
- 1.6 PICkit™ Serial Analyzer Software
- Chapter 2. Getting Started
- 2.1 Introduction
- 2.2 Highlights
- 2.3 Installing the PICkit™ Serial Analyzer Software
- 2.4 Connecting the PICkit™ Serial Analyzer to the PC
- 2.5 Connecting the PICkit™ Serial Analyzer to the 28-Pin Demo Board
- 2.6 Starting the PICkit™ Serial Analyzer Program
- 2.7 Running the 28-Pin Demo I2C™ Demonstration Program
- 2.8 I2C™ Communications – Basic Operations
- 2.9 28-Pin Demo I2C™ Source Code and Firmware
- Chapter 3. PICkit™ Serial Analyzer PC Program
- 3.1 Introduction
- 3.2 Highlights
- 3.3 Installing the PICkit™ Serial Analyzer Software
- 3.4 Starting the Program
- 3.5 Configuration Wizard
- 3.6 Main Window
- 3.7 Serial Communications Modes
- Chapter 4. I2C™ Master Communications
- 4.1 Introduction
- 4.2 Highlights
- 4.3 PICkit Serial Pin Assignments
- 4.4 Selecting Communications Mode
- 4.5 Configuring I2C Communications Mode
- 4.6 Communications: Basic Operations
- 4.7 Script Builder
- 4.8 Script Execute
- Chapter 5. I2C™ Slave Communications
- 5.1 Introduction
- 5.2 Highlights
- 5.3 PICkit Serial Pin Assignments
- 5.4 Selecting Communications Mode
- 5.5 Configuring I2C Slave Communications Mode
- 5.6 Communications: Basic Operations
- 5.7 Communications: Profile Generator
- Chapter 6. Lin Communications
- 6.1 Introduction
- 6.2 Highlights
- 6.3 PICkit Serial Pin Assignments
- 6.4 Selecting Communications Mode
- 6.5 Configuring Lin Slave Communications Mode
- 6.6 Communications: Basic Operations
- Chapter 7. SPI and Microwire Master Communications
- 7.1 Introduction
- 7.2 Highlights
- 7.3 PICkit™ Serial Analyzer Pin Assignments
- 7.4 Selecting Communications Mode
- 7.5 Configurating SPI Communications Mode
- 7.6 Communications: Basic Operations
- 7.7 Script Builder
- 7.8 Script Execute
- Chapter 8. USART Asynchronous Communications
- 8.1 Introduction
- 8.2 Highlights
- 8.3 PICkit Serial Pin Assignments
- 8.4 Selecting Communications Mode
- 8.5 Configuring USART Asynchronous Communications Mode
- 8.6 Communications: Basic Operations
- 8.7 Script Builder
- 8.8 Script Execute
- Chapter 9. USART Master Synchronous Communications
- 9.1 Introduction
- 9.2 Highlights
- 9.3 PICkit Serial Pin Assignments
- 9.4 Selecting Communications Mode
- 9.5 Configuring USART Synchronous Master Communications Mode
- 9.6 Communications: Basic Operations
- 9.7 Script Builder
- 9.8 Script Execute
- Chapter 10. User Defined Templates
- 10.1 Introduction
- 10.2 Highlights
- 10.3 Creating and Using Templates
- 10.4 My Templates
- 10.5 Graphing Data
- Chapter 11. PICkit™ Serial Analyzer Firmware
- 11.1 Introduction
- 11.2 Highlights
- 11.3 Overview
- 11.4 Exec
- 11.5 Comm
- 11.6 I2CM Communications
- 11.7 I2CS Communications
- 11.8 SPI Communications
- 11.9 USART Communications
- 11.10 LIN Communications
- Chapter 12. PICkit™ Serial Analyzer DLL
- 12.1 Introduction
- 12.2 Overview
- Chapter 13. Troubleshooting
- 13.1 Introduction
- 13.2 Frequently Asked Questions
- Appendix A. PICkit Serial Analyzer Schematics
- A.1 Introduction
- Appendix B. 28-Pin Demo Board I2C™ Demonstration Firmware
- B.1 Introduction
- B.2 Highlights
- B.3 Hardware
- B.4 Firmware
- B.5 I2C Communications
- B.6 Slave Devices
- B.7 Functions
- Worldwide Sales
PICkit™ SERIAL ANALYZER
USER’S GUIDE
© 2009 Microchip Technology Inc. DS51647C-page 89
Chapter 11. PICkit™ Serial Analyzer Firmware
11.1 INTRODUCTION
This chapter explains the internal operations of the PICkit™ Serial Analyzer firmware.
The source code is available on the PICkit Serial Analyzer CD-ROM at
D:\PICkit Serial Analyzer\Firmware
.
11.2 HIGHLIGHTS
This chapter discusses:
•Exec
•Comm
•I
2
CM Communications
•I
2
Communications
• SPI/Microwire Communications
• USART Communications
• LIN Communications
11.3 OVERVIEW
Internally, the PICkit™ Serial Analyzer operates two firmware state controllers running
in parallel – Exec (executive) and Comm (communication). The Exec controller is
responsible for overall PICkit™ Serial Analyzer configuration, moving data to/from the
host (via USB) and moving data to/from the Comm controller (via RAM buffers). The
Comm controller supervises serial communication with the target device. This includes
both configuring the necessary communication hardware and executing a sequential
‘script’ defining a serial ‘transaction’.
FIGURE 11-1: ARCHITECTURE
I
2
C™
SPI
USART
Comm
Control
CBUF2
(output/data)
CBUF1
(script/data)
CBUF
(scratch)
Status
Control
Exec
EP0-OUT
EP0-IN
EP1-IN
EP1-OUT
ARCHITECTURE
USB
Circular
Buffers
H
O
S
T
D
E
V
I
C
E