void wav_pre_read(void)
{
u32 index = 0;
flash_bytes_read(index, (u8 *)buffer1, 0x100);
while(WaveParsing());
WaveLen = WAVE_Format.DataSize;
I2S_Freq_Config(WAVE_Format.SampleRate);
}
void wav_play(void)
{
u32 index = 0;
u8 i=0;
WaveLen = 0;
XferCplt = 0;
DataOffset = 0;
buffer_switch = 1;
index = DataOffset;
flash_bytes_read(index, (u8 *)buffer1, 1024);
index += 1024;
flash_bytes_read(index, (u8 *)buffer2, 1024);
Audio_MAL_Play((u32)buffer1, 1024);
buffer_switch=1;
XferCplt=0;
while(WaveLen!=0)
{
while(XferCplt==0);//??DMA????
XferCplt=0;
if(buffer_switch==0)
{
Audio_MAL_Play((u32)buffer1,1024);//?buffer1??
index += 1024;
flash_bytes_read(index, (u8 *)buffer2, 1024);
buffer_switch=1;
}
else
{
Audio_MAL_Play((u32)buffer2,1024);//?buffer2??
index += 1024;
flash_bytes_read(index, (u8 *)buffer1, 1024);
buffer_switch=0;
}
i++;
}
}
void parse_commands(void)
{
uint8_t count = 0, tmp;
if(page_write)
{
// Multiply nblock with 64 to get block start address in flash:
flash_bytes_write(nblock << 6, out1buf, USB_EP1_SIZE);
nblock++;
nblocks++;
in1buf[0] = 0;
count = 1;
if (nblocks == (FLASH_PAGE_SIZE/USB_EP1_SIZE))
{
page_write = false;
}
}
else
{
switch(out1buf[0])
{
case CMD_FIRMWARE_VERSION:
in1buf[0] = FW_VER_MAJOR;
in1buf[1] = FW_VER_MINOR;
count = 2;
break;
case CMD_FLASH_ERASE_PAGE:
flash_page_erase(out1buf[1]);
used_flash_pages[out1buf[1]] = false;
in1buf[0] = 0;
count = 1;
break;
case CMD_FLASH_WRITE_INIT: // Eight 64 bytes bulk packets <- PC follow after this command
if (used_flash_pages[out1buf[1]])
{
flash_page_erase(out1buf[1]);
}
used_flash_pages[out1buf[1]] = 1;
nblock = (uint16_t)out1buf[1] << 3; // Multiply page number by 8 to get block number
nblocks = 0;
page_write = true;
in1buf[0] = 0;
count = 1;
break;
case CMD_FLASH_READ:
// Read one USB_EP1_SIZE bytes block from the address given
// by out1buf[1] << 6 and MS bit set by CMD_FLASH_SELECT_HALF
// below:
nblock = (nblock & 0xff00) | (uint16_t)out1buf[1];
if (RDIS)
{
// RDISMB is set. Will return 0x00 for pages that are in use and 0xff
// for unused pages.
if (used_flash_pages[nblock >> 3])
tmp = 0x00;
else
tmp = 0xff;
for(count=0; count<USB_EP1_SIZE; count++)
in1buf[count] = tmp;
}
else
flash_bytes_read((uint16_t)nblock<<6, in1buf, USB_EP1_SIZE);
count = USB_EP1_SIZE;
break;
case CMD_FLASH_SET_PROTECTED:
count = 1;
INFEN = 1;
if (rdismb != 0xff)
{
in1buf[0] = 1;
}
else
{
flash_byte_write((uint16_t)&rdismb, 0x00);
in1buf[0] = 0;
}
INFEN = 0;
break;
case CMD_FLASH_SELECT_HALF:
// When outbuf[1] = 0 program the lower half of the 32K bytes flash
// and when outbuf[1] = 1 program the upper part:
if (out1buf[1] == 1)
nblock = (nblock & 0x00ff) | 0x0100;
else
nblock &= 0x00ff;
in1buf[0] = 0;
count = 1;
break;
default:
break;
}
