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main.c    132 lines (107 with data), 2.2 kB

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/* MAIN.C file
*
* Copyright (c) 2002-2005 STMicroelectronics
*/
#include "includes.h"
code const unsigned char magic_key[4] = "OgGi";
unsigned short loopcounter;
void main()
{
unsigned char state,c;
unsigned char magic_key_check[4], magic_key_index, cmd_enabled;
InitGPIO();
InitCPUSpeed();
UART2_Init((u32)UART_BAUDRATE,
UART2_WORDLENGTH_8D,
UART2_STOPBITS_1,
UART2_PARITY_NO,
UART2_SYNCMODE_CLOCK_DISABLE,
UART2_MODE_TXRX_ENABLE);
InitVS1053();
SetLedRight(0xAA);
SetLedRight(0x55);
SetLedLeft(0xAA);
SetLedLeft(0x55);
VS1053SetGPIO(~0xA0);
VS1053SetGPIO(~0x50);
state = STATE_IDLE;
cmd_enabled = 0;
while (1)
{
loopcounter++;
if(UART2_IsRX())
{
c=UART2_ReceiveData8();
if(c == magic_key[0])
{
magic_key_index = 0;
}
magic_key_check[magic_key_index++] = c;
if(memcmp(magic_key_check, magic_key, 4) == 0)
{
cmd_enabled = 1;
}
if(cmd_enabled)
{
switch(c)
{
case 'b':
if(state == STATE_IDLE)
{
state = STATE_STARTSTREAMING;
}
break;
case 'e':
if(state == STATE_STREAMING)
{
state = STATE_STOPSTREAMING_STAGE1;
}
cmd_enabled = 0;
break;
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
c -= '0';
c <<= 4;
VS1053SetGPIO(~c);
break;
default:
break;
}
}
}
switch(state)
{
case STATE_IDLE:
break;
case STATE_STARTSTREAMING:
InitVS1053();
VS1053LoadPlugin();
state = STATE_STREAMING;
break;
case STATE_STREAMING:
VS1053ReadVol();
VS1053StreamOgg();
break;
case STATE_STOPSTREAMING_STAGE1:
VS1053WriteRegister(VS1053_REG_AICTRL3,BIT(0)); //Stop Streaming Command
state = STATE_STOPSTREAMING_STAGE2;
break;
case STATE_STOPSTREAMING_STAGE2:
VS1053StreamOgg();
if(VS1053ReadRegister(VS1053_REG_AICTRL3) & BIT(1)) // encoder finished writing to buffer
{
VS1053StreamOggClose();
state = STATE_IDLE;
}
break;
default:
break;
}
}
}