Serial Communications

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"Serial Communications is a comprehensive advanced level book which details various methods for implementing serial communications between a Microchip PIC microcontroller and an external device. Asynchronous serial communications is covered both by using an on-chip USART and by bit-bang methods. The RS-232 standard is explained. A discussion of synchronous serial communications includes the I2C (Philips Semiconductors), SPI (Motorola) and Microwire (National Semiconductor) protocols. The Dallas Semiconductor 1-Wire bus is described. Many code examples are included as modules which will provide the basis for the reader's own PIC microcontroller applications. By Roger Stevens (8-1/2 x 11 format, 566 pages). TABLE OF CONTENTS 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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