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sta013.c
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sta013.c
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/*! \file sta013.c \brief STMicroelectronics STA013 MP3 player driver. */
//*****************************************************************************
//
// File Name : 'sta013.c'
// Title : STMicroelectronics STA013 MP3 player driver
// Author : Pascal Stang
// Created : 10/22/2000
// Revised : 7/11/2003
// Version : 0.3
// Target MCU : ATmega103 (should work for Atmel AVR Series)
// Editor Tabs : 4
//
// NOTE: This code is currently below version 1.0, and therefore is considered
// to be lacking in some functionality or documentation, or may not be fully
// tested. Nonetheless, you can expect most functions to work.
//
// This code is distributed under the GNU Public License
// which can be found at http://www.gnu.org/licenses/gpl.txt
//
//*****************************************************************************
#include <avr/io.h>
#include <avr/pgmspace.h>
#include "global.h"
#include "i2csw.h"
#include "timer.h"
//#include "procyon.h"
#include "sta013.h"
// bitrate and sampling frequency mappings
//static int __attribute__ ((progmem)) MP3_Bitrates[] =
// { 0, 8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128, 144, 160, 0,
// 0, 32, 40, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320, 0};
static const unsigned char __attribute__ ((progmem)) MP3_Bitrates[] =
{ 0, 4, 8, 12, 16, 20, 24, 28, 32, 40, 48, 56, 64, 72, 80, 0,
0, 16, 20, 24, 28, 32, 40, 48, 56, 64, 80, 96, 112, 128, 160, 0};
static const unsigned char __attribute__ ((progmem)) MP3_SamplingFrequencies[] =
{ 11, 12, 8, 0, // MPEG 2.5 rates
0, 0, 0, 0, // reserved rates
22, 24, 16, 0, // MPEG 2 rates
44, 48, 32, 0 // MPEG 1 rates
};
// STA013 firmware update and configuration data
static const unsigned char __attribute__ ((progmem)) STA013_UpdateData[] =
{
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0x21, 0xbc, 0x23, 0x80, 0x26, 0xaa, 0x27, 0x0a, 0x28, 0xc1,
0x20, 0x00, 0x21, 0x01, 0x22, 0x00, 0x23, 0x00, 0x24, 0x01,
0x25, 0xc0, 0x26, 0xab, 0x28, 0xc2, 0x20, 0x70, 0x21, 0x0f,
0x22, 0xb8, 0x23, 0x95, 0x24, 0x89, 0x25, 0x07, 0x26, 0x20,
0x27, 0x00, 0x28, 0xc3, 0x20, 0x03, 0x21, 0xe3, 0x22, 0x0f,
0x23, 0x83, 0x26, 0x26, 0x27, 0x0d, 0x28, 0xc4, 0x20, 0x05,
0x21, 0x00, 0x22, 0x00, 0x23, 0x84, 0x26, 0xb4, 0x27, 0x09,
0x28, 0xc5, 0x20, 0x00, 0x21, 0x03, 0x23, 0x95, 0x26, 0x14,
0x27, 0x08, 0x28, 0xc6, 0x21, 0xa6, 0x23, 0xa4, 0x26, 0x2a,
0x27, 0x05, 0x28, 0xc7, 0x21, 0x00, 0x23, 0xa0, 0x26, 0x44,
0x27, 0x09, 0x28, 0xc8, 0x21, 0x18, 0x22, 0x6d, 0x23, 0x80,
0x24, 0x9e, 0x25, 0x7b, 0x26, 0xaa, 0x27, 0x0a, 0x28, 0xc9,
0x20, 0x42, 0x21, 0x13, 0x22, 0x0b, 0x24, 0x89, 0x25, 0x07,
0x28, 0xca, 0x20, 0x00, 0x21, 0xae, 0x22, 0x00, 0x23, 0x95,
0x26, 0x24, 0x27, 0x00, 0x28, 0xcb, 0x21, 0x00, 0x22, 0x03,
0x23, 0x80, 0x24, 0x87, 0x25, 0x7b, 0x26, 0xaa, 0x27, 0x0a,
0x28, 0xcc, 0x20, 0x42, 0x21, 0x16, 0x22, 0x0b, 0x24, 0x89,
0x25, 0x07, 0x28, 0xcd, 0x20, 0x00, 0x21, 0xae, 0x22, 0x00,
0x23, 0x95, 0x26, 0x24, 0x27, 0x00, 0x28, 0xce, 0x20, 0x05,
0x21, 0x00, 0x23, 0x84, 0x26, 0xb4, 0x27, 0x09, 0x28, 0xcf,
0x20, 0x03, 0x21, 0x0d, 0x22, 0x0b, 0x23, 0x83, 0x26, 0x26,
0x27, 0x0d, 0x28, 0xd0, 0x20, 0x00, 0x21, 0x00, 0x22, 0x00,
0x23, 0x00, 0x24, 0x80, 0x26, 0x02, 0x27, 0x00, 0x28, 0xd1,
0x23, 0x80, 0x24, 0x09, 0x25, 0x48, 0x26, 0x1e, 0x28, 0xd2,
0x21, 0x58, 0x22, 0x34, 0x23, 0x33, 0x24, 0x80, 0x25, 0x07,
0x26, 0x2a, 0x28, 0xd3, 0x21, 0x00, 0x22, 0x00, 0x23, 0x00,
0x26, 0x80, 0x27, 0x10, 0x28, 0xd4, 0x21, 0x10, 0x23, 0x63,
0x26, 0x2a, 0x27, 0x00, 0x28, 0xd5, 0x21, 0x00, 0x23, 0x60,
0x26, 0xa8, 0x27, 0x12, 0x28, 0xd6, 0x21, 0xaf, 0x22, 0x4c,
0x23, 0x00, 0x26, 0xc8, 0x27, 0x0c, 0x28, 0xd7, 0x21, 0x00,
0x22, 0x00, 0x26, 0x80, 0x27, 0x05, 0x28, 0xd8, 0x23, 0x80,
0x24, 0x86, 0x25, 0x3b, 0x26, 0x1e, 0x27, 0x00, 0x28, 0xd9,
0x20, 0x42, 0x21, 0x1c, 0x22, 0x0e, 0x23, 0x00, 0x24, 0x80,
0x25, 0x07, 0x28, 0xda, 0x20, 0x00, 0x21, 0x35, 0x22, 0x29,
0x26, 0xc4, 0x27, 0x0c, 0x28, 0xdb, 0x20, 0x02, 0x21, 0x1d,
0x22, 0x0e, 0x26, 0x1e, 0x27, 0x00, 0x28, 0xdc, 0x20, 0x00,
0x21, 0x7f, 0x22, 0x34, 0x26, 0xc4, 0x27, 0x0c, 0x28, 0xdd,
0x21, 0x00, 0x22, 0x00, 0x23, 0x90, 0x24, 0x9f, 0x25, 0x04,
0x26, 0x10, 0x27, 0x0a, 0x28, 0xde, 0x23, 0x00, 0x24, 0x84,
0x25, 0x00, 0x26, 0x80, 0x27, 0x10, 0x28, 0xdf, 0x21, 0x06,
0x23, 0x63, 0x24, 0x80, 0x25, 0x07, 0x26, 0x2a, 0x27, 0x00,
0x28, 0xe0, 0x21, 0x00, 0x23, 0x80, 0x24, 0x89, 0x26, 0xaa,
0x27, 0x0a, 0x28, 0xe1, 0x20, 0x05, 0x23, 0x84, 0x26, 0xb4,
0x27, 0x09, 0x28, 0xe2, 0x20, 0x70, 0x21, 0x61, 0x22, 0xb8,
0x23, 0x95, 0x26, 0x12, 0x27, 0x08, 0x28, 0xe3, 0x20, 0x00,
0x21, 0x01, 0x22, 0x00, 0x23, 0x80, 0x24, 0x86, 0x25, 0xc3,
0x26, 0xab, 0x27, 0x0a, 0x28, 0xe4, 0x20, 0x42, 0x21, 0xce,
0x22, 0x0f, 0x24, 0x89, 0x25, 0x07, 0x26, 0xaa, 0x28, 0xe5,
0x20, 0x70, 0x21, 0x50, 0x22, 0xb8, 0x23, 0x95, 0x26, 0x12,
0x27, 0x08, 0x28, 0xe6, 0x20, 0x05, 0x21, 0x00, 0x22, 0x00,
0x23, 0x84, 0x26, 0xb4, 0x27, 0x09, 0x28, 0xe7, 0x20, 0x70,
0x21, 0x64, 0x22, 0xb8, 0x23, 0x95, 0x26, 0x12, 0x27, 0x08,
0x28, 0xe8, 0x20, 0x00, 0x21, 0x01, 0x22, 0x00, 0x23, 0x80,
0x24, 0x86, 0x25, 0xc3, 0x26, 0xab, 0x27, 0x0a, 0x28, 0xe9,
0x20, 0x42, 0x21, 0xd3, 0x22, 0x0f, 0x24, 0x89, 0x25, 0x07,
0x26, 0xaa, 0x28, 0xea, 0x20, 0x70, 0x21, 0x51, 0x22, 0xb8,
0x23, 0x95, 0x26, 0x12, 0x27, 0x08, 0x28, 0xeb, 0x20, 0x05,
0x21, 0x00, 0x22, 0x00, 0x23, 0x84, 0x26, 0xb4, 0x27, 0x09,
0x28, 0xec, 0x20, 0x70, 0x21, 0x65, 0x22, 0xb8, 0x23, 0x95,
0x26, 0x12, 0x27, 0x08, 0x28, 0xed, 0x20, 0x00, 0x21, 0x01,
0x22, 0x00, 0x23, 0x80, 0x24, 0x86, 0x25, 0xc3, 0x26, 0xab,
0x27, 0x0a, 0x28, 0xee, 0x20, 0x42, 0x21, 0xd8, 0x22, 0x0f,
0x24, 0x89, 0x25, 0x07, 0x26, 0xaa, 0x28, 0xef, 0x20, 0x70,
0x21, 0x52, 0x22, 0xb8, 0x23, 0x95, 0x26, 0x12, 0x27, 0x08,
0x28, 0xf0, 0x20, 0x05, 0x21, 0x00, 0x22, 0x00, 0x23, 0x84,
0x26, 0xb4, 0x27, 0x09, 0x28, 0xf1, 0x20, 0x70, 0x21, 0x61,
0x22, 0xb8, 0x23, 0x95, 0x26, 0x02, 0x27, 0x08, 0x28, 0xf2,
0x20, 0x00, 0x21, 0x01, 0x22, 0x00, 0x23, 0x80, 0x24, 0x86,
0x25, 0xc3, 0x26, 0xab, 0x27, 0x0a, 0x28, 0xf3, 0x20, 0x42,
0x21, 0xdd, 0x22, 0x0f, 0x24, 0x89, 0x25, 0x07, 0x26, 0xaa,
0x28, 0xf4, 0x20, 0x70, 0x21, 0x50, 0x22, 0xb8, 0x23, 0x95,
0x26, 0x02, 0x27, 0x08, 0x28, 0xf5, 0x20, 0x05, 0x21, 0x00,
0x22, 0x00, 0x23, 0x84, 0x26, 0xb4, 0x27, 0x09, 0x28, 0xf6,
0x20, 0x00, 0x21, 0x01, 0x23, 0x80, 0x24, 0x86, 0x25, 0xcb,
0x26, 0xab, 0x27, 0x0a, 0x28, 0xf7, 0x20, 0x42, 0x21, 0xe1,
0x22, 0x0f, 0x24, 0x89, 0x25, 0x07, 0x26, 0xaa, 0x28, 0xf8,
0x20, 0x00, 0x21, 0x02, 0x22, 0x00, 0x23, 0x00, 0x24, 0x81,
0x25, 0xc4, 0x26, 0xab, 0x28, 0xf9, 0x21, 0x00, 0x23, 0x80,
0x24, 0x89, 0x25, 0x48, 0x26, 0xaa, 0x28, 0xfa, 0x20, 0x05,
0x23, 0x84, 0x25, 0x07, 0x26, 0xb4, 0x27, 0x09, 0x28, 0xfb,
0x20, 0x70, 0x21, 0x4e, 0x22, 0xb8, 0x23, 0x95, 0x26, 0x10,
0x27, 0x08, 0x28, 0xfc, 0x20, 0x00, 0x21, 0x00, 0x22, 0x00,
0x23, 0x80, 0x24, 0x86, 0x25, 0xc3, 0x26, 0xab, 0x27, 0x0a,
0x28, 0xfd, 0x20, 0x42, 0x21, 0xe7, 0x22, 0x0f, 0x24, 0x89,
0x25, 0x07, 0x26, 0xaa, 0x28, 0xfe, 0x20, 0x00, 0x21, 0xbb,
0x22, 0x00, 0x23, 0x95, 0x26, 0x20, 0x27, 0x00, 0x28, 0xff,
0x20, 0x05, 0x21, 0x00, 0x23, 0x84, 0x26, 0xb4, 0x27, 0x09,
0x2a, 0x08, 0x10, 0x01, 0x3a, 0x00, 0x64, 0x3a, 0x65, 0xbb,
0x08, 0x3a, 0x09, 0xbb, 0x50, 0x10, 0x52, 0x67, 0x51, 0x77,
0x05, 0xa1, 0x18, 0x04, 0xff, 0xff
};
void sta013HWReset(void)
{
sbi(DDRD, 2); // set reset pin to output
sbi(PORTD, 2); // clock RESET low
cbi(PORTD, 2);
timerPause(10);
sbi(PORTD, 2);
// give the sta013 a little time to come out of reset
timerPause(50);
}
u08 sta013ReadReg(u08 reg)
{
u08 data;
i2cReceive(STA_I2C_DEV, reg, 1, &data);
return data;
}
void sta013WriteReg(u08 reg, u08 data)
{
i2cSend(STA_I2C_DEV, reg, 1, &data);
}
void sta013DownloadUpdate(void)
{
u16 i;
u08 reg, data;
i=0;
// get first reg/data pair
reg = pgm_read_byte(STA013_UpdateData + i++);
data = pgm_read_byte(STA013_UpdateData + i++);
// loop until end of update
while( (reg != 0xff) )
{
sta013WriteReg(reg, data);
reg = pgm_read_byte(STA013_UpdateData + i++);
data = pgm_read_byte(STA013_UpdateData + i++);
}
}
u08 sta013Init(void)
{
// reset STA013 device
sta013HWReset();
// identify STA013 device
if(sta013ReadReg(STA_REG_IDENT) != STA_IDENT)
{
return FALSE;
}
// do firmware configuration and update
sta013DownloadUpdate();
// start decoder
sta013StartDecoder();
return TRUE;
}
void sta013StartDecoder(void)
{
// Soft reset
sta013WriteReg(STA_REG_SOFT_RESET, 0x01);
sta013WriteReg(STA_REG_SOFT_RESET, 0x00);
// Mute and configure DAC output
sta013WriteReg(STA_REG_MUTE, 0x01);
sta013WriteReg(STA_REG_PCMDIVIDER, 0x01); // 32-bit mode, O_FAC = 256
sta013WriteReg(STA_REG_PCMCONF, 0x31); // 18-bit mode & more
// Configure PLL for MP3 rates
sta013WriteReg(STA_REG_PLLFRAC_441_H, 0x67);
sta013WriteReg(STA_REG_PLLFRAC_441_L, 0x77);
sta013WriteReg(STA_REG_PLLFRAC_H, 0xbb);
sta013WriteReg(STA_REG_PLLFRAC_L, 0x3a);
sta013WriteReg(STA_REG_MFSDF_441, 0x10);
sta013WriteReg(STA_REG_MFSDF, 0x0F);
// Configure interface polarities, etc
sta013WriteReg(STA_REG_PLLCTL_2, 0x0C);
sta013WriteReg(STA_REG_PLLCTL_3, 0x00);
sta013WriteReg(STA_REG_PLLCTL_1, 0xA1);
sta013WriteReg(STA_REG_SCLK_POL, 0x00); // data sampled on rising edge
sta013WriteReg(STA_REG_REQ_POL, 0x01); // REQ line active high
sta013WriteReg(STA_REG_DATA_REQ_ENABLE, 0x04);
sta013WriteReg(STA_REG_PLLCTL_1, 0xA1);
// Set audio tone controls
sta013SetTone(0, 0, 0, 0);
// Unmute and start running
sta013WriteReg(STA_REG_RUN, 0x01);
sta013WriteReg(STA_REG_PLAY, 0x01);
sta013WriteReg(STA_REG_MUTE, 0x00);
}
void sta013StopDecoder(void)
{
// mute output
sta013WriteReg(STA_REG_MUTE, 0x01);
// soft reset
sta013WriteReg(STA_REG_SOFT_RESET, 0x01);
sta013WriteReg(STA_REG_SOFT_RESET, 0x00);
}
void sta013PauseDecoder(void)
{
// enable mute
sta013WriteReg(STA_REG_MUTE, 0x01);
// stop the decoder
sta013WriteReg(STA_REG_PLAY, 0x00);
}
void sta013ResumeDecoder(void)
{
// run the decoder
sta013WriteReg(STA_REG_PLAY, 0x01);
// disable mute
sta013WriteReg(STA_REG_MUTE, 0x00);
}
void sta013GetMP3Info(u16 *bitrate, u08 *sampFreq, u08 *mode)
{
u08 headL, headM, headH;
u08 mpegID, bitrateIndex, sampFreqIndex;
// get the MP3 header info
headH = sta013ReadReg(STA_REG_HEAD_H);
headM = sta013ReadReg(STA_REG_HEAD_M);
headL = sta013ReadReg(STA_REG_HEAD_L);
// IDex:ID is in head[20:19]
// 00 - MPEG2.5
// 01 - reserved
// 10 - MPEG2
// 11 - MPEG1
mpegID = (headH & 0x18)>>3;
// sampling frequency is in head[11:10]
sampFreqIndex = ((headM & 0x0C)>>2) | (mpegID<<2);
// bitrate index is in head[15:12]
bitrateIndex = ((headM & 0xF0)>>4) | ((mpegID & 0x01)<<4);
//bitrateIndex = ((headM & 0xF0)>>4) | (1<<4);
// mode is in head[7:6]
// 00 - stereo
// 01 - joint stereo
// 10 - dual channel
// 11 - single channel (mono)
*mode = (headL & 0xC0)>>6;
*bitrate = 2 * pgm_read_byte( MP3_Bitrates + bitrateIndex );
*sampFreq = pgm_read_byte( MP3_SamplingFrequencies + sampFreqIndex );
/*
header = (unsigned long)sta013ReadReg(STA_REG_HEAD_H) << 16 |
(unsigned long)sta013ReadReg(STA_REG_HEAD_M) << 8 |
(unsigned long)sta013ReadReg(STA_REG_HEAD_L);
// hdr->word = l;
// hdr->emphasis = l & 0x03;
// hdr->isOriginal = (l >> 2) & 0x01;
// hdr->isCopyrighted = (l >> 3) & 0x01;
// hdr->modeExtension = (l >> 4) & 0x03;
// hdr->mode = (l >> 6) & 0x03;
// hdr->private = (l >> 8) & 0x01;
// hdr->padding = (l >> 9) & 0x01;
// hdr->frequencyIndex = (l >> 10) & 0x03;
// hdr->bitrateIndex = (l >> 12) & 0x0f;
// hdr->protection = (l >> 16) & 0x01;
// hdr->layer = (l >> 17) & 0x03;
// hdr->ID = (l >> 19) & 0x01;
// hdr->ID_ex = (l >> 20) & 0x01;
*/
}
u16 sta013GetAverageBitrate(void)
{
return (2 * sta013ReadReg(STA_REG_AVERAGE_BITRATE));
}
void sta013SetVolume(u08 volume, s08 balance)
{
char attenL, attenR;
// volume is expected as 0-100 value
// Note:
// #define MIN_VOLUME_ATTENUATION 0
// #define MAX_VOLUME_ATTENUATION 96
if( balance > 0)
{ // balance to the left, attenuate right
attenL = (100 - volume);
attenR = (100 - volume) - (balance);
}
else
{ // balance to the right, attenuate left
attenL = (100 - volume) + (balance);
attenR = (100 - volume);
}
// respect limits
attenL = MIN(attenL,MAX_VOLUME_ATTENUATION);
attenL = MAX(attenL,MIN_VOLUME_ATTENUATION);
attenR = MIN(attenR,MAX_VOLUME_ATTENUATION);
attenR = MAX(attenR,MIN_VOLUME_ATTENUATION);
// set volume
sta013WriteReg(STA_REG_DLA, attenL);
sta013WriteReg(STA_REG_DLB, MAX_VOLUME_ATTENUATION);
sta013WriteReg(STA_REG_DRA, attenR);
sta013WriteReg(STA_REG_DRB, MAX_VOLUME_ATTENUATION);
}
void sta013SetTone(s08 bassEnh, u16 bassFreq, s08 trebleEnh, u16 trebleFreq)
{
// set bass enhancement
sta013WriteReg(STA_REG_BASS_FREQUENCY_LOW, (bassFreq ) & 0xFF );
sta013WriteReg(STA_REG_BASS_FREQUENCY_HIGH, (bassFreq>>8) & 0xFF );
// respect limits
bassEnh = MIN(bassEnh,MAX_BASS_ENHANCE);
bassEnh = MAX(bassEnh,MIN_BASS_ENHANCE);
sta013WriteReg(STA_REG_BASS_ENHANCE, bassEnh);
// set treble enhancement
sta013WriteReg(STA_REG_TREBLE_FREQUENCY_LOW, (trebleFreq ) & 0xFF );
sta013WriteReg(STA_REG_TREBLE_FREQUENCY_HIGH, (trebleFreq>>8) & 0xFF );
// respect limits
trebleEnh = MIN(trebleEnh,MAX_TREBLE_ENHANCE);
trebleEnh = MAX(trebleEnh,MIN_TREBLE_ENHANCE);
sta013WriteReg(STA_REG_TREBLE_ENHANCE, trebleEnh);
// set attentuation to avoid clipping
sta013WriteReg( STA_REG_TONE_ATTEN, MAX(bassEnh,trebleEnh) );
}
u08 sta013Demand(void)
{
return bit_is_set(STA013_DEMAND_PORTIN,STA013_DEMAND_PIN);
}