1 PICmicro Serial Communications and This Book

1.1 Introduction to Serial Communications

1.2 About This Book

2 Asynchronous Serial Communications

2.1 Asynchronous Serial Overview

2.2 Asynchronous Serial Protocol

2.3 The Communications Channel and Flow Control

3 The RS-232 Standard

3.1 RS-232 Overview

3.2 Mechanical Interface

3.3 Functional Interface

3.4 Non-Standard RS-232 Applications

3.5 Electrical Interface

3.6 PIC to RS-232 Interface

4 The ASCII Character Code

4.1 Graphic Characters

4.2 Control Character Functions

5 Bit-Bang Asynchronous Communications

5.1 Bit-Bang Half-Duplex

5.1.1  Half-Duplex Receive and Transmit Services

Bit-Bang Application

12 Bit PICmicro Applications

Bit-Bang 16C54 Application

5.1.2 Receive Timeouts

5.1.3 Interrupt Driven Receive

Bit-Bang Interupt Driven Application

5.1.4 Automatic Bit Rate Detection

Automatic Bit-Rate Application

5.1.5 Using the Section 5.1 Routines in Your Applications

5.2 Bit-Bang Full Duplex

5.2.1 Full-Duplex Receive and Transmit Tasks

Bit-Bang Full-Duplex Application

5.2.2 Full-Duplex Receive and Transmit Tasks with In-Band Flow Control

In-Band Flow Control Application

5.2.3 Using the Section 5.2 Routines in Your Applications

5.3 Interrupt Driven Bit-Bang Full Duplex

5.3.1 Bit-Bang Full-Duplex Application

5.3.2 Using the Section 5.3 Routines in Your Applications

6 On-Chip UART

6.1 Using The On-Chip USART

6.2 UART Full-Duplex Receive and Transmit Services

6.2.1 UART Transmit

6.2.2 UART Receive

6.2.3 A simple Full-Duplex Application

6.2.4 Using the Section 6.2 Routines in Your Applications

6.3 UART Applications

6.3.1 Half-Duplex Block Data Transfer
      Block Transfer Application

6.3.2 Packet Data Transfer
      Packet Data Transfer Application

6.3.3 Using the Section 6.3 Routines in Your Applications

7 Synchronous Serial Communications

7.1 Synchronous Serial Overview

7.2 Embedded Systems and Synchronous Serial Communications

7.3 Synchronous Serial Protocol

7.4 Synchronous Serial Peripheral Devices

7.5 Three Synchronous Serial Communications Standards

    I²C Bus

    SPI Bus

    Microwire Interface

8 The I²C Serial Bus

8.1 I²C Bus Specifications

8.2 The PIC Microcontroller as a Bit-Bang I²C Master

8.2.1 I²C Bit-Bang Master Bus Services

8.2.2 I²C Bit-Bang Master Bus Services Using FET Drivers

8.2.3 Bit-Banging the I²C Bus with the 12 Bit PICmicro Family

8.2.4 Using the Section 8.2 Routines in Your Applications

8.3 The PICmicro as a Bit-Bang I²C Slave

8.3.1 I²C Bit-Bang Slave Bus Services

8.3.2 Using the Section 8.3 Routines in Your Applications

8.4 Communicating With an I²C Serial EEPROM

8.4.1 Bit-Banging the 24C32 EEPROM

8.4.2 Bit-Banging the 24C32 EEPROM with the 12 Bit PICmicro
    Family

8.4.3 I²C Bit-Bang EEPROM Application

8.4.4 Using the Section 8.4 Routines in Your Applications

8.5 The I²C Bus and Serial Analog to Digital Converters

8.5.1 Using an SPI/Microwire A/D on the I²C Bit-Bang Bus

8.5.2 I²C Bit-Bang A/D Application

8.5.3 I²C Bit-Bang A/D and EEPROM Application

8.5.4 Using the Section 8.5 Routines in Your Application

8.6 I²C Bit-Bang Slave Applications

8.6.1 I²C Bit-Bang Slave Application
      I²C Master Application

8.6.2 I²C Bit-Bang Slave Application with ACK Polling
      I²C Bit-Bang Master Application

8.7 MSSP Hardware I²C

8.7.1 Using the On-Chip MSSP Based I²C Hardwre

8.7.2 The MSSP as an I²C Master

8.7.3 Communicating with the 24C32 EEPROM

8.7.4 An MSSP I²C Master Application: SILVER1.ASM

8.7.5 Using the MSSP Master I²C Routines in Your Applications

8.7.6 The MSSP Master as an I²C Slave

8.7.7 An MSSP Master I²C Slave Application: GREY1.ASM

8.7.8 Using the MSSP Slave I²C Routines in Your Applications

9 The SPI Serial Bus

9.1 SPI Bus Specifications

9.2 The PICmicro as a Bit-Bang SPI Master and Slave

9.2.1 SPI Bit-Bang Master Bus Services

9.2.2 SPI Bit-Bang Slave Bus Services

9.2.3 Using the Section 9.2 Routines in Your Applications

9.3 SPI Analog to Digital Converter

9.4 SPI Display Driver

9.4.1 SPI Bit-Bang A/D and Display Application

9.5 Communicating with SPI Serial EEPROMS

9.5.1 SPI EEPROM Bit-Bang Communications Services

9.5.2 Using the Section 9.5 Routines in Your Applications

9.6 Putting It All Together: A Data Logger Application Using the Bit-Bang SPI Master and Slave        services, the A/D services and the EEPROM Services

9.6.1 Bit-Bang SPI Data Logger Master Application

9.6.2 Bit-Bang SPI Slave LCD Display

9.7 Using a Microwire EEPROM on the SPI Bit-Bang Bus

9.8 An SPI Bit-Bang Slave Port Expander Application

9.8.1 SPI Bit-Bang Slave Port Expander

9.8.2 Using the Port Expander in Your Applications

9.9 On-Chip SPI Hardware

9.9.1 Using the On-Chip SSP Based SPI Hardware

9.9.2 SSP Hardware SPI Serial EEPROM Communications

9.9.3 SSP Hardware SPI A/D and Display Application

9.9.4 SSP Hardware SPI Slave Application

9.9.5 Using the Section 9.8 Routines in Your Applications

      SSP and BSSP

9.10 Daisy Chaining SPI devices

10 The Microwire Serial Interface

10.1 The Microwire Interface Specification (As a PICmicro Bit-Bang Master)

10.2 Microwire Bit-Bang Master and Slave Interface Services

10.2.1 Microwire Bit-Bang Master Interface Services

10.2.2 Microwire Bit-Bang Slave Interface Services

10.2.3 Using the Section 10.2 Routines in Your Applications

10.3 Communicating with Microwire Serial EEPROMS

10.3.1 Microwire EEPROM Bit-Bang Communications Services

10.3.2 Using the Section 10.3 Routines in your Application

10.4 Microwire Analog to Digital Converters

10.4.1 Communicating with a Microwire A/D Converter

10.4.2 A Microwire A/D, Microwire EEPROM
       and Microwire to SPI Display Application

10.4.3 Using the Section 10.4 Routines in Your Applications

10.5 Microwire Bit-Bang Slave Applications

10.5.1 A Microwire Slave Parallel Port Application

11 The Dallas 1-Wire Bus

11.1 The Dallas 1-Wire Bus Specification

11.1.1 Time-Slot Specifications

11.1.2 Communications Protocol

11.1.3 Hardware Specifications

11.2 The PICmicro as a 1-Wire Bit-Bang Master and Slave

11.2.1 1-Wire Bit-Bang Master Bus Services

11.2.2 1-Wire Bit-Bang Slave Bus Services

11.2.3 Using the Section 11.2 Routines in Your Applications

11.3 Communicating with a 1-Wire Digital Thermometer

11.3.1 Parasite Power

11.3.2 A 1-Wire Bit-Bang DS1820 Thermometer Application

11.4 A 1-Wire Bit-Bang Slave Application

11.4.1 A 1-Wire Slave Parallel Port

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