SD Library for LaunchPad LM4F / TM4C

• Adaptation for LaunchPad LM4F / TM4C

Rei Vilo - May 20, 2014

• SD - a slightly more friendly wrapper for sdfatlib

(C) Copyright 2010 SparkFun Electronics

• Arduino SdFat Library

Copyright (C) 2009 by William Greiman

Requirements

SD-card in SPI mode requires a 512 bytes buffer for read-write operations.

Energia 12

Boards

• LaunchPad Stellaris LM4F120 — tested
• LaunchPad Tiva C Series TM4C123 — tested
• LaunchPad MSP432P401R — tested
• LaunchPad Connected TM4C129 — not tested

Other candidates

• LaunchPad MSP430F5529 — not tested
• LaunchPad MSP430FR5969 — not tested

Initialise the SD-card

Parameters

• chipSelectPin pin number for SD-card chip select
• sckRateID SPI speed, optional, default=SPI_HALF_SPEED
• SPI_Port SPI port number, optional, default=-1=none
• cardDetectionPin card detection pin number, optional, default=-1=none
• level expected level when SD-card available, default=LOW

Result

• true is success, false otherwise

    boolean begin(uint8_t chipSelectPin,
                  uint8_t sckRateID = SPI_HALF_SPEED,
                  int8_t SPI_Port = -1,
                  int8_t cardDetectionPin = -1,
                  int8_t level = LOW);

SD-card hardware detection

Result

• true is SD-card inserted, false otherwise

Uses previously defined cardDetectionPin and level

    uint8_t detectSD();

Licence

Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License