This program is for Star Board Orange. Wave file into SD card is read, and its DAC signal output.
Dependencies: EthernetNetIf mbed HTTPServer
Revision 0:383bff20e783, committed 2010-11-25
- Comitter:
- y_notsu
- Date:
- Thu Nov 25 14:59:16 2010 +0000
- Commit message:
Changed in this revision
diff -r 000000000000 -r 383bff20e783 EthernetNetIf.lib --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/EthernetNetIf.lib Thu Nov 25 14:59:16 2010 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/donatien/code/EthernetNetIf/#bc7df6da7589
diff -r 000000000000 -r 383bff20e783 FATFileSystem.lib --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/FATFileSystem.lib Thu Nov 25 14:59:16 2010 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_unsupported/code/fatfilesystem/ \ No newline at end of file
diff -r 000000000000 -r 383bff20e783 HTTPServer.lib --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/HTTPServer.lib Thu Nov 25 14:59:16 2010 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/donatien/code/HTTPServer/#d753966e4d97
diff -r 000000000000 -r 383bff20e783 SDHCFileSystem.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/SDHCFileSystem.cpp Thu Nov 25 14:59:16 2010 +0000 @@ -0,0 +1,495 @@ +/* mbed SDFileSystem Library, for providing file access to SD cards + * Copyright (c) 2008-2010, sford + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +//* Introduction +// * ------------ +// * SD and MMC cards support a number of interfaces, but common to them all +// * is one based on SPI. This is the one I'm implmenting because it means +// * it is much more portable even though not so performant, and we already +// * have the mbed SPI Interface! +// * +// * The main reference I'm using is Chapter 7, "SPI Mode" of: +// * http://www.sdcard.org/developers/tech/sdcard/pls/Simplified_Physical_Layer_Spec.pdf +// * +// * SPI Startup +// * ----------- +// * The SD card powers up in SD mode. The SPI interface mode is selected by +// * asserting CS low and sending the reset command (CMD0). The card will +// * respond with a (R1) response. +// * +// * CMD8 is optionally sent to determine the voltage range supported, and +// * indirectly determine whether it is a version 1.x SD/non-SD card or +// * version 2.x. I'll just ignore this for now. +// * +// * ACMD41 is repeatedly issued to initialise the card, until "in idle" +// * (bit 0) of the R1 response goes to '0', indicating it is initialised. +// * +// * You should also indicate whether the host supports High Capicity cards, +// * and check whether the card is high capacity - i'll also ignore this +// * +// * SPI Protocol +// * ------------ +// * The SD SPI protocol is based on transactions made up of 8-bit words, with +//* the host starting every bus transaction by asserting the CS signal low. The +// * card always responds to commands, data blocks and errors. +// * +// * The protocol supports a CRC, but by default it is off (except for the +// * first reset CMD0, where the CRC can just be pre-calculated, and CMD8) +// * I'll leave the CRC off I think! +// * +// * Standard capacity cards have variable data block sizes, whereas High +// * Capacity cards fix the size of data block to 512 bytes. I'll therefore +// * just always use the Standard Capacity cards with a block size of 512 bytes. +// * This is set with CMD16. +// * +// * You can read and write single blocks (CMD17, CMD25) or multiple blocks +// * (CMD18, CMD25). For simplicity, I'll just use single block accesses. When +// * the card gets a read command, it responds with a response token, and then +// * a data token or an error. +// * +// * SPI Command Format +// * ------------------ +// * Commands are 6-bytes long, containing the command, 32-bit argument, and CRC. +// * +// * +---------------+------------+------------+-----------+----------+--------------+ +// * | 01 | cmd[5:0] | arg[31:24] | arg[23:16] | arg[15:8] | arg[7:0] | crc[6:0] | 1 | +// * +---------------+------------+------------+-----------+----------+--------------+ +// * +// * As I'm not using CRC, I can fix that byte to what is needed for CMD0 (0x95) +// * +// * All Application Specific commands shall be preceded with APP_CMD (CMD55). +// * +// * SPI Response Format +// * ------------------- +// * The main response format (R1) is a status byte (normally zero). Key flags: +// * idle - 1 if the card is in an idle state/initialising +// * cmd - 1 if an illegal command code was detected +// * +// * +-------------------------------------------------+ +// * R1 | 0 | arg | addr | seq | crc | cmd | erase | idle | +// * +-------------------------------------------------+ +// * +// * R1b is the same, except it is followed by a busy signal (zeros) until +// * the first non-zero byte when it is ready again. +// * +// * Data Response Token +// * ------------------- +// * Every data block written to the card is acknowledged by a byte +// * response token +// * +// * +----------------------+ +// * | xxx | 0 | status | 1 | +// * +----------------------+ +// * 010 - OK! +// * 101 - CRC Error +// * 110 - Write Error +// * +// * Single Block Read and Write +// * --------------------------- +// * +// * Block transfers have a byte header, followed by the data, followed +// * by a 16-bit CRC. In our case, the data will always be 512 bytes. +// * +// * +------+---------+---------+- - - -+---------+-----------+----------+ +// * | 0xFE | data[0] | data[1] | | data[n] | crc[15:8] | crc[7:0] | +// * +------+---------+---------+- - - -+---------+-----------+----------+ +// */ +// +//* +// * Comment: Changes for SDHC support till 32GB +// * Name: KB +// * Date: 07/24/2010 +// * Release: 0.1 +// */ + +#include "SDHCFileSystem.h" + +#define DEBUG +#define SD_COMMAND_TIMEOUT 5000 + + +SDFileSystem::SDFileSystem(PinName mosi, PinName miso, PinName sclk, PinName cs, const char* name) : + FATFileSystem(name), _spi(mosi, miso, sclk), _cs(cs) { + _cs = 1; +} + +#define R1_IDLE_STATE (1 << 0) +#define R1_ERASE_RESET (1 << 1) +#define R1_ILLEGAL_COMMAND (1 << 2) +#define R1_COM_CRC_ERROR (1 << 3) +#define R1_ERASE_SEQUENCE_ERROR (1 << 4) +#define R1_ADDRESS_ERROR (1 << 5) +#define R1_PARAMETER_ERROR (1 << 6) + +// Types +// - v1.x Standard Capacity +// - v2.x Standard Capacity +// - v2.x High Capacity +// - Not recognised as an SD Card + +#define SDCARD_FAIL 0 +#define SDCARD_V1 1 +#define SDCARD_V2 2 +#define SDCARD_V2HC 3 + +int SDFileSystem::initialise_card() { + // Set to 100kHz for initialisation, and clock card with cs = 1 + _spi.frequency(100000); + _cs = 1; + for(int i=0; i<16; i++) { + _spi.write(0xFF); + } + + // send CMD0, should return with all zeros except IDLE STATE set (bit 0) + if(_cmd(0, 0) != R1_IDLE_STATE) { + fprintf(stderr, "No disk, or could not put SD card in to SPI idle state\n"); + return SDCARD_FAIL; + } + + // send CMD8 to determine whther it is ver 2.x + int r = _cmd8(); + if(r == R1_IDLE_STATE) { + return initialise_card_v2(); + } else if(r == (R1_IDLE_STATE | R1_ILLEGAL_COMMAND)) { + return initialise_card_v1(); + } else { + fprintf(stderr, "Not in idle state after sending CMD8 (not an SD card?)\n"); + return SDCARD_FAIL; + } +} + +int SDFileSystem::initialise_card_v1() { + for(int i=0; i<SD_COMMAND_TIMEOUT; i++) { + _cmd(55, 0); + if(_cmd(41, 0) == 0) { + cdv = 512; + #ifdef DEBUG + printf("\n\rInit: SEDCARD_V1\n\r"); + #endif + return SDCARD_V1; + } + } + + fprintf(stderr, "Timeout waiting for v1.x card\n"); + return SDCARD_FAIL; +} + +int SDFileSystem::initialise_card_v2() { + + for(int i=0; i<SD_COMMAND_TIMEOUT; i++) { + wait_ms(50); + _cmd58(); + _cmd(55, 0); + if(_cmd(41, 0x40000000) == 0) { + _cmd58(); + #ifdef DEBUG + printf("\n\rInit: SDCARD_V2\n\r"); + #endif + cdv = 1; + return SDCARD_V2; + } + } + + fprintf(stderr, "Timeout waiting for v2.x card\n"); + return SDCARD_FAIL; +} + +int SDFileSystem::disk_initialize() { + + int i = initialise_card(); + #ifdef DEBUG + printf("init card = %d\n", i); + #endif + _sectors = _sd_sectors(); + + // Set block length to 512 (CMD16) + if(_cmd(16, 512) != 0) { + fprintf(stderr, "Set 512-byte block timed out\n"); + return 1; + } + + _spi.frequency(1000000); // Set to 1MHz for data transfer + return 0; +} + +int SDFileSystem::disk_write(const char *buffer, int block_number) { + // set write address for single block (CMD24) + if(_cmd(24, block_number * cdv) != 0) { + return 1; + } + + // send the data block + _write(buffer, 512); + return 0; +} + +int SDFileSystem::disk_read(char *buffer, int block_number) { + // set read address for single block (CMD17) + if(_cmd(17, block_number * cdv) != 0) { + return 1; + } + + // receive the data + _read(buffer, 512); + return 0; +} + +int SDFileSystem::disk_status() { return 0; } +int SDFileSystem::disk_sync() { return 0; } +int SDFileSystem::disk_sectors() { return _sectors; } + +// PRIVATE FUNCTIONS + +int SDFileSystem::_cmd(int cmd, int arg) { + _cs = 0; + + // send a command + _spi.write(0x40 | cmd); + _spi.write(arg >> 24); + _spi.write(arg >> 16); + _spi.write(arg >> 8); + _spi.write(arg >> 0); + _spi.write(0x95); + + // wait for the repsonse (response[7] == 0) + for(int i=0; i<SD_COMMAND_TIMEOUT; i++) { + int response = _spi.write(0xFF); + if(!(response & 0x80)) { + _cs = 1; + _spi.write(0xFF); + return response; + } + } + _cs = 1; + _spi.write(0xFF); + return -1; // timeout +} +int SDFileSystem::_cmdx(int cmd, int arg) { + _cs = 0; + + // send a command + _spi.write(0x40 | cmd); + _spi.write(arg >> 24); + _spi.write(arg >> 16); + _spi.write(arg >> 8); + _spi.write(arg >> 0); + _spi.write(0x95); + + // wait for the repsonse (response[7] == 0) + for(int i=0; i<SD_COMMAND_TIMEOUT; i++) { + int response = _spi.write(0xFF); + if(!(response & 0x80)) { + return response; + } + } + _cs = 1; + _spi.write(0xFF); + return -1; // timeout +} + + +int SDFileSystem::_cmd58() { + _cs = 0; + int arg = 0; + + // send a command + _spi.write(0x40 | 58); + _spi.write(arg >> 24); + _spi.write(arg >> 16); + _spi.write(arg >> 8); + _spi.write(arg >> 0); + _spi.write(0x95); + + // wait for the repsonse (response[7] == 0) + for(int i=0; i<SD_COMMAND_TIMEOUT; i++) { + int response = _spi.write(0xFF); + if(!(response & 0x80)) { + int ocr = _spi.write(0xFF) << 24; + ocr |= _spi.write(0xFF) << 16; + ocr |= _spi.write(0xFF) << 8; + ocr |= _spi.write(0xFF) << 0; +// printf("OCR = 0x%08X\n", ocr); + _cs = 1; + _spi.write(0xFF); + return response; + } + } + _cs = 1; + _spi.write(0xFF); + return -1; // timeout +} + +int SDFileSystem::_cmd8() { + _cs = 0; + + // send a command + _spi.write(0x40 | 8); // CMD8 + _spi.write(0x00); // reserved + _spi.write(0x00); // reserved + _spi.write(0x01); // 3.3v + _spi.write(0xAA); // check pattern + _spi.write(0x87); // crc + + // wait for the repsonse (response[7] == 0) + for(int i=0; i<SD_COMMAND_TIMEOUT * 1000; i++) { + char response[5]; + response[0] = _spi.write(0xFF); + if(!(response[0] & 0x80)) { + for(int j=1; j<5; j++) { + response[i] = _spi.write(0xFF); + } + _cs = 1; + _spi.write(0xFF); + return response[0]; + } + } + _cs = 1; + _spi.write(0xFF); + return -1; // timeout +} + +int SDFileSystem::_read(char *buffer, int length) { + _cs = 0; + + // read until start byte (0xFF) + while(_spi.write(0xFF) != 0xFE); + + // read data + for(int i=0; i<length; i++) { + buffer[i] = _spi.write(0xFF); + } + _spi.write(0xFF); // checksum + _spi.write(0xFF); + + _cs = 1; + _spi.write(0xFF); + return 0; +} + +int SDFileSystem::_write(const char *buffer, int length) { + _cs = 0; + + // indicate start of block + _spi.write(0xFE); + + // write the data + for(int i=0; i<length; i++) { + _spi.write(buffer[i]); + } + + // write the checksum + _spi.write(0xFF); + _spi.write(0xFF); + + // check the repsonse token + if((_spi.write(0xFF) & 0x1F) != 0x05) { + _cs = 1; + _spi.write(0xFF); + return 1; + } + + // wait for write to finish + while(_spi.write(0xFF) == 0); + + _cs = 1; + _spi.write(0xFF); + return 0; +} + +static int ext_bits(char *data, int msb, int lsb) { + int bits = 0; + int size = 1 + msb - lsb; + for(int i=0; i<size; i++) { + int position = lsb + i; + int byte = 15 - (position >> 3); + int bit = position & 0x7; + int value = (data[byte] >> bit) & 1; + bits |= value << i; + } + return bits; +} + +int SDFileSystem::_sd_sectors() { + + int c_size, c_size_mult, read_bl_len; + int block_len, mult, blocknr, capacity; + int blocks, hc_c_size; + uint64_t hc_capacity; + + // CMD9, Response R2 (R1 byte + 16-byte block read) + if(_cmdx(9, 0) != 0) { + fprintf(stderr, "Didn't get a response from the disk\n"); + return 0; + } + + char csd[16]; + if(_read(csd, 16) != 0) { + fprintf(stderr, "Couldn't read csd response from disk\n"); + return 0; + } + + // csd_structure : csd[127:126] + // c_size : csd[73:62] + // c_size_mult : csd[49:47] + // read_bl_len : csd[83:80] - the *maximum* read block length + + int csd_structure = ext_bits(csd, 127, 126); + + #ifdef DEBUG + printf("\n\rCSD_STRUCT = %d\n", csd_structure); + #endif + + switch (csd_structure){ + case 0: + cdv = 512; + c_size = ext_bits(csd, 73, 62); + c_size_mult = ext_bits(csd, 49, 47); + read_bl_len = ext_bits(csd, 83, 80); + + block_len = 1 << read_bl_len; + mult = 1 << (c_size_mult + 2); + blocknr = (c_size + 1) * mult; + capacity = blocknr * block_len; + blocks = capacity / 512; + #ifdef DEBUG + printf("\n\rSDCard\n\rc_size: %.4X \n\rcapacity: %.ld \n\rsectors: %d\n\r", c_size, capacity, blocks); + #endif + break; + + case 1: + cdv = 1; + hc_c_size = ext_bits(csd, 63, 48); + int hc_read_bl_len = ext_bits(csd, 83, 80); + hc_capacity = hc_c_size+1; + blocks = (hc_c_size+1)*1024; + #ifdef DEBUG + printf("\n\rSDHC Card \n\rhc_c_size: %.4X \n\rcapacity: %.lld \n\rsectors: %d\n\r", hc_c_size, hc_capacity*512*1024, blocks); + #endif + break; + + default: + fprintf(stderr, "This disk tastes funny! I only know about type 0 CSD structures\n"); + return 0; + // break; + }; + return blocks; +}
diff -r 000000000000 -r 383bff20e783 SDHCFileSystem.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/SDHCFileSystem.h Thu Nov 25 14:59:16 2010 +0000 @@ -0,0 +1,87 @@ +/* mbed SDFileSystem Library, for providing file access to SD cards + * Copyright (c) 2008-2010, sford + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +#ifndef MBED_SDHCFILESYSTEM_H +#define MBED_SDHCFILESYSTEM_H + +#include "mbed.h" +#include "FATFileSystem.h" + +/* Double Words */ +typedef unsigned long long uint64_t; +typedef long long sint64_t; + +/** Access the filesystem on an SD Card using SPI +// * +// * @code +// * #include "mbed.h" +// * #include "SDFileSystem.h" +// * +// * SDFileSystem sd(p5, p6, p7, p12, "sd"); // mosi, miso, sclk, cs +// * +// * int main() { +// * FILE *fp = fopen("/sd/myfile.txt", "w"); +// * fprintf(fp, "Hello World!\n"); +// * fclose(fp); +// * } +// */ +class SDFileSystem : public FATFileSystem { +public: + + /** Create the File System for accessing an SD Card using SPI + * + * @param mosi SPI mosi pin connected to SD Card + * @param miso SPI miso pin conencted to SD Card + * @param sclk SPI sclk pin connected to SD Card + * @param cs DigitalOut pin used as SD Card chip select + * @param name The name used to access the virtual filesystem + */ + SDFileSystem(PinName mosi, PinName miso, PinName sclk, PinName cs, const char* name); + virtual int disk_initialize(); + virtual int disk_write(const char *buffer, int block_number); + virtual int disk_read(char *buffer, int block_number); + virtual int disk_status(); + virtual int disk_sync(); + virtual int disk_sectors(); + + +protected: + + int _cmd(int cmd, int arg); + int _cmdx(int cmd, int arg); + int _cmd8(); + int _cmd58(); + int initialise_card(); + int initialise_card_v1(); + int initialise_card_v2(); + + int _read(char *buffer, int length); + int _write(const char *buffer, int length); + int _sd_sectors(); + int _sectors; + + SPI _spi; + DigitalOut _cs; + int cdv; +}; + +#endif
diff -r 000000000000 -r 383bff20e783 SDHCFileSystem_copy.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/SDHCFileSystem_copy.h Thu Nov 25 14:59:16 2010 +0000 @@ -0,0 +1,86 @@ +/* mbed SDFileSystem Library, for providing file access to SD cards + * Copyright (c) 2008-2010, sford + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +#ifndef MBED_SDHCFILESYSTEM_H +#define MBED_SDHCFILESYSTEM_H + +#include "mbed.h" +#include "FATFileSystem.h" + +/* Double Words */ +typedef unsigned long long uint64_t; +typedef long long sint64_t; + +/** Access the filesystem on an SD Card using SPI + * + * @code + * #include "mbed.h" + * #include "SDFileSystem.h" + * + * SDFileSystem sd(p5, p6, p7, p12, "sd"); // mosi, miso, sclk, cs + * + * int main() { + * FILE *fp = fopen("/sd/myfile.txt", "w"); + * fprintf(fp, "Hello World!\n"); + * fclose(fp); + * } + */ +class SDFileSystem : public FATFileSystem { +public: + + /** Create the File System for accessing an SD Card using SPI + * + * @param mosi SPI mosi pin connected to SD Card + * @param miso SPI miso pin conencted to SD Card + * @param sclk SPI sclk pin connected to SD Card + * @param cs DigitalOut pin used as SD Card chip select + * @param name The name used to access the virtual filesystem + */ + SDFileSystem(PinName mosi, PinName miso, PinName sclk, PinName cs, const char* name); + virtual int disk_initialize(); + virtual int disk_write(const char *buffer, int block_number); + virtual int disk_read(char *buffer, int block_number); + virtual int disk_status(); + virtual int disk_sync(); + virtual int disk_sectors(); + +protected: + + int _cmd(int cmd, int arg); + int _cmdx(int cmd, int arg); + int _cmd8(); + int _cmd58(); + int initialise_card(); + int initialise_card_v1(); + int initialise_card_v2(); + + int _read(char *buffer, int length); + int _write(const char *buffer, int length); + int _sd_sectors(); + int _sectors; + + SPI _spi; + DigitalOut _cs; + int cdv; +}; + +#endif
diff -r 000000000000 -r 383bff20e783 TextLCD.lib --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/TextLCD.lib Thu Nov 25 14:59:16 2010 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/simon/code/TextLCD/#a53b3e2d6f1e
diff -r 000000000000 -r 383bff20e783 main.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/main.cpp Thu Nov 25 14:59:16 2010 +0000 @@ -0,0 +1,185 @@ +#include "mbed.h" +//#define USE_TextLCD_20x4 +#define USE_FIXED_IP + +//////////////////////////////////////// +//////// For Waveplayer //////// +//////////////////////////////////////// +//Place suitable uncompressed wav files with 8 or 16 bit sample sizes on the SD card and ensure the +//file names are 8.3 format. Then change the main method below to the relevant file paths. +#include "wavplayer.h" + + +//////////////////////////////////////// +//////// general setting //////// +//////////////////////////////////////// +//#define USE_TextLCD_20x4 +#define USE_FIXED_IP + +//////////////////////////////////////// +//////// For TextLCD //////// +//////////////////////////////////////// +#include "TextLCD.h" +#ifdef USE_TextLCD_20x4 +//TextLCD lcd( p24, p26, p27, p28, p29, p30, TextLCD::LCD20x4 ); // rs, e, d0-d3 +#else +TextLCD lcd( p24, p26, p27, p28, p29, p30 ); // rs, e, d0-d3 +#endif + +//////////////////////////////////////// +//////// For SD_card //////// +//////////////////////////////////////// +#include "SDHCFileSystem.h" +//SDFileSystem sd(p5, p6, p7, p13, "sd"); // mosi, miso, sclk, cs, name +SDFileSystem sd(p5, p6, p7, p8, "sd"); // mosi, miso, sclk, cs, name (HW modification candidate) + +//////////////////////////////////////// +//////// For USB storage //////// +//////////////////////////////////////// +//#include "MSCFileSystem.h" +//MSCFileSystem usb("usb"); + +//////////////////////////////////////// +//////// For Ethernet test //////// +//////////////////////////////////////// +#include "EthernetNetIf.h" +#include "HTTPServer.h" +#ifdef USE_FIXED_IP +EthernetNetIf eth( + IpAddr(192,168,0,20), //IP Address + IpAddr(255,255,255,0), //Network Mask + IpAddr(192,168,0,1), //Gateway + IpAddr(192,168,0,1) //DNS +); +#else + EthernetNetIf eth; +#endif +HTTPServer svr; +LocalFileSystem web("local"); + + +void test_TextLCD( void ); +void test_file_write( char *title, char *path ); +void test_httpserver( void ); +int position( void ); + + DigitalOut led1(LED1); + DigitalOut led4(LED4); + + +int main() { + WavPlayer myWavPlayer; + led1 = 1 ; + printf("\r\n--------------- Starting -----------------\r\n"); + + test_TextLCD(); + wait( 1 ); + test_file_write( "SD card", "/sd/star_bd.txt" ); + wait( 1 ); + //test_file_write( "USB storage", "/usb/star_bd.txt" ); + wait( 1 ); + //test_httpserver(); + myWavPlayer.play_wave("/sd/startup.wav"); // 8 bit sample size + printf("<<<<<<<<<<<<<<<< All done >>>>>>>>>>>>>>>>\r\n"); + led1 = 0; + led4 = 1; + +} + + +void test_TextLCD( void ) { + // TextLCD test + +#ifdef USE_TextLCD_20x4 + lcd.locate( 0, 0 ); + for ( int i = 0, c = '0'; i < 20; i++, c++ ) + lcd.putc( c ); + + for ( int i = 0, c = 'A'; i < 20; i++, c++ ) + lcd.putc( c ); + + for ( int i = 0, c = 'a'; i < 20; i++, c++ ) + lcd.putc( c ); + for ( int i = 0, c = '0' - 10; i < 20; i++, c++ ) + lcd.putc( c ); + exit( 0 ); + wait( 300 ); + lcd.cls(); +#endif // USE_TextLCD_20x4 + + lcd.locate( 0, 0 ); + lcd.printf( "TextLCD: OK?" ); + lcd.locate( 0, 1 ); + lcd.printf( "" ); + +} + +void test_file_write( char *title, char *path ) { + // SD card test + lcd.locate( 0, position() ); + lcd.printf( "%s: ", title ); + + FILE *fp = fopen( path, "w" ); + if ( fp == NULL ) { + lcd.printf( "error" ); + error( "Could not open file for write\n" ); + } + fprintf( fp, "The mbed writing a file through the star board orange (%s)!", title ); + fclose( fp ); + + lcd.printf( "OK." ); +} + + +void test_httpserver( void ) { + DigitalOut led1( LED1 ); + lcd.locate( 0, position() ); + lcd.printf( "HTTP srv: " ); + + Base::add_rpc_class<DigitalOut>(); + + printf("Setting up...n"); + EthernetErr ethErr = eth.setup(); + if ( ethErr ) { + lcd.printf( "error" ); + error( "error @ eth.setup()\n" ); + } + lcd.printf("OK "); + + FSHandler::mount("/local", "/"); //Mount /webfs path on web root path + FSHandler::mount("/sd", "/sd"); //Mount /webfs path on web sd path + //FSHandler::mount("/usb", "/usb"); //Mount /webfs path on web usb path + + svr.addHandler<FSHandler>("/"); //Default handler + svr.addHandler<FSHandler>("/sd"); + //svr.addHandler<FSHandler>("/usb"); + //Example : Access to mbed.htm : http://a.b.c.d/mbed.htm or http://a.b.c.d/files/mbed.htm + + svr.bind(80); + + lcd.locate( 5, position() -1 ); + lcd.printf("Listening"); + + Timer tm; + tm.start(); + //Listen indefinitely + while (true) { + Net::poll(); + if (tm.read()>.5) { + led1=!led1; //Show that we are alive + tm.start(); + } + } +} + + +int position( void ) { + static int p = 0; + +#ifdef USE_TextLCD_20x4 + return( ++p % 4 ); +#else + return( ++p % 2 ); +#endif +} +
diff -r 000000000000 -r 383bff20e783 mbed.bld --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Thu Nov 25 14:59:16 2010 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/e2ac27c8e93e
diff -r 000000000000 -r 383bff20e783 wavplayer.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/wavplayer.cpp Thu Nov 25 14:59:16 2010 +0000 @@ -0,0 +1,153 @@ +/* + Library wave file player by Tom Coxon + + Based on WAVEplayer by Vlad Cazan/Stephan Rochon modified by Tom Coxon to: + + 1. Run correctly on the Embedded Artists LPCXpresso baseboard. + 2. To play 8 bit sample size in addition to original 16 bit + 3. To be more fault tolerant when playing wav files. +*/ + +#include "wavplayer.h" + +Ticker tick; + +AnalogOut DACout(p18); + +void WavPlayer::dac_out() { + if (DAC_on) { + DACout.write_u16(DAC_fifo[DAC_rptr]); + DAC_rptr=(DAC_rptr+1) & 0xff; + } +} + +//void play_wave(char *wavname) { +void WavPlayer::play_wave(char *wavname) { + unsigned chunk_id,chunk_size,channel; + unsigned data,samp_int,i; + short dac_data; + char *slice_buf; + short *data_sptr; + FMT_STRUCT wav_format; + FILE *wavfile; + long slice,num_slices; + DAC_wptr=0; + DAC_rptr=0; + + size_t result; + + for (i=0;i<256;i+=2) { + DAC_fifo[i]=0; + DAC_fifo[i+1]=3000; + } + DAC_wptr=4; + DAC_on=0; + + printf("Playing wave file '%s'\r\n",wavname); + + wavfile=fopen(wavname,"rb"); + if (!wavfile) { + printf("Unable to open wav file '%s'\r\n",wavname); + exit(1); + } + + fread(&chunk_id,4,1,wavfile); + fread(&chunk_size,4,1,wavfile); + while (!feof(wavfile)) { + printf("Read chunk ID 0x%x, size 0x%x\r\n",chunk_id,chunk_size); + switch (chunk_id) { + case 0x46464952: + fread(&data,4,1,wavfile); + printf("RIFF chunk\r\n"); + printf(" chunk size %d (0x%x)\r\n",chunk_size,chunk_size); + printf(" RIFF type 0x%x\r\n",data); + break; + case 0x20746d66: + fread(&wav_format,sizeof(wav_format),1,wavfile); + printf("FORMAT chunk\r\n"); + printf(" chunk size %d (0x%x)\r\n",chunk_size,chunk_size); + printf(" compression code %d\r\n",wav_format.comp_code); + printf(" %d channels\r\n",wav_format.num_channels); + printf(" %d samples/sec\r\n",wav_format.sample_rate); + printf(" %d bytes/sec\r\n",wav_format.avg_Bps); + printf(" block align %d\r\n",wav_format.block_align); + printf(" %d bits per sample\r\n",wav_format.sig_bps); + if (chunk_size > sizeof(wav_format)) + fseek(wavfile,chunk_size-sizeof(wav_format),SEEK_CUR); +// create a slice buffer large enough to hold multiple slices + slice_buf=(char *)malloc(wav_format.block_align*SLICE_BUF_SIZE); + if (!slice_buf) { + printf("Unable to malloc slice buffer"); + exit(1); + } + break; + case 0x61746164: + slice_buf=(char *)malloc(wav_format.block_align*SLICE_BUF_SIZE); + if (!slice_buf) { + printf("Unable to malloc slice buffer"); + exit(1); + } + num_slices=chunk_size/wav_format.block_align; + printf("DATA chunk\r\n"); + printf(" chunk size %d (0x%x)\r\n",chunk_size,chunk_size); + printf(" %d slices\r\n",num_slices); + printf(" Ideal sample interval=%d\r\n",(unsigned)(1000000.0/wav_format.sample_rate)); + samp_int=1000000/(wav_format.sample_rate); + printf(" programmed interrupt tick interval=%d\r\n",samp_int); + +// starting up ticker to write samples out -- no printfs until tick.detach is called + tick.attach_us(this,&WavPlayer::dac_out, samp_int); + DAC_on=1; + for (slice=0;slice<num_slices;slice+=SLICE_BUF_SIZE) { + + result = fread(slice_buf,wav_format.block_align*SLICE_BUF_SIZE,1,wavfile); + if (feof(wavfile)) { + printf("Oops -- not enough slices in the wave file\r\n"); + + break; + } + + data_sptr=(short *)slice_buf; + for (i=0;i<SLICE_BUF_SIZE;i++) { + dac_data=0; + +// for a stereo wave file average the two channels. + for (channel=0;channel<wav_format.num_channels;channel++) { + switch (wav_format.sig_bps) { + case 16: + dac_data+=( ((int)(*data_sptr++)) +32768 ); + break; + case 8: + dac_data+=( ((int)(*data_sptr++)) +32768 <<8); + break; + } + } + DAC_fifo[DAC_wptr]=dac_data; + DAC_wptr=(DAC_wptr+1) & 0xff; + while (DAC_wptr==DAC_rptr) { + wait_us(10); + } + } + } + DAC_on=0; + tick.detach(); + printf("Ticker detached\r\n"); + free(slice_buf); + break; + case 0x5453494c: + printf("INFO chunk, size %d\r\n",chunk_size); + fseek(wavfile,chunk_size,SEEK_CUR); + break; + default: + printf("unknown chunk type 0x%x, size %d\r\n",chunk_id,chunk_size); + data=fseek(wavfile,chunk_size,SEEK_CUR); + break; + } + fread(&chunk_id,4,1,wavfile); + fread(&chunk_size,4,1,wavfile); + } + printf("++++++++++++ Done with wave file ++++++++++\r\n"); + fclose(wavfile); +} + +
diff -r 000000000000 -r 383bff20e783 wavplayer.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/wavplayer.h Thu Nov 25 14:59:16 2010 +0000 @@ -0,0 +1,51 @@ +/* + Library wave file player by Tom Coxon + + Based on WAVEplayer by Vlad Cazan/Stephan Rochon modified by Tom Coxon to: + + 1. Run correctly on the Embedded Artists LPCXpresso baseboard. + 2. To play 8 bit sample size in addition to original 16 bit + 3. To be more fault tolerant when playing wav files. +*/ + +#ifndef WAVPLAYER_H +#define WAVPLAYER_H + +#include "mbed.h" + +#define SAMPLE_FREQ 32000 +#define BUF_SIZE (SAMPLE_FREQ/10) +#define SLICE_BUF_SIZE 1 + +typedef struct uFMT_STRUCT { + short comp_code; + short num_channels; + unsigned sample_rate; + unsigned avg_Bps; + short block_align; + short sig_bps; +} FMT_STRUCT; + +class WavPlayer { + +public: + + void play_wave(char *wavname); + +private: + + void cleanup(char *); + void fill_adc_buf(short *, unsigned); + void swapword(unsigned *); + +// a FIFO for the DAC + short DAC_fifo[256]; + short DAC_wptr; + short DAC_rptr; + short DAC_on; + + void dac_out(); + +}; + +#endif