void deleteFile(GL_HBUTTON objectPtr, GL_HEVENT e)
{
UINT8 id;
if (objectPtr == &fileBtn_0) {
id = 0;
} else if (objectPtr == &fileBtn_1) {
id = 1;
} else if (objectPtr == &fileBtn_2) {
id = 2;
} else if (objectPtr == &fileBtn_3) {
id = 3;
} else if (objectPtr == &fileBtn_4) {
id = 4;
} else {
return;
}
// delete file linked with button
if (buttonFileName[id][0] != '\0') {
FAT_FileOpen(buttonFileName[id], DELETE);
FAT_FileClose();
DELETE_BEEP();
}
loadFiles();
redraw();
}
void DC16_RX_Mode (void)
{
unsigned int i, j, k;
volatile UINT16 u16Error;
UINT16 u16CRC;
UINT32 fileSize, progressCount, ledcnt;
RTCSC_RTCPS = 0xA; // re-enable RTC (set prescaler = /4, interrupt every 4ms)
IR_TX_Off;
// enable IR receive mode
// prepare TPM2 to be used for IR TPM2MOD = IR_RC_PERIOD; TPM2C1 as falling edge
ir_init(IR_RC_PERIOD);
(void)memset(gau8Minicom, 0x00, MINICOM_BUFFER_SIZE); // clear buffer
// wait to start receiving data
// and when we do, get filename (should be in 8.3 format + NULL)
k = 0;
do
{
while (!ir_rx_byte) // wait to start receiving IR data...
{
if (SD_PRESENT == HIGH) // if no SD card, exit mode
{
delay_ms(500);
return;
}
if (!SW_MODE)
{
delay_ms(50); // poor man's debounce
while (!SW_MODE)
{
IR_RX_Off; // disable RX when we're done
led_state = ALL_OFF;
state_change_flag = 1; // go to the TX state, since we haven't started receiving yet
}
return; // get outta here!
}
}
// if we get here, that means we've received a valid byte
ir_rx_byte = FALSE;
gau8Minicom[k] = ir_command;
++k;
} while ((ir_command != '\0') && (k < 13));
gau8Minicom[k-1] = '\0'; // add a null in case we've received incorrect filename data
if (gau8Minicom[0] == '\0') // if no filename is received, abort transfer
{
if (usb_enabled_flag && USB_DETECT) Terminal_Send_String("Filename invalid.\n\r");
DC16_Error(errRX, 0);
return;
}
// ensure the filename is uppercase before working with it
// gotta love FAT16!
for (j = 0; gau8Minicom[j] != '\0'; ++j)
gau8Minicom[j] = (UINT8)toupper(gau8Minicom[j]);
// get file size (4 bytes long)
fileSize = 0;
for (i = 0; i < 4; ++i)
{
timeout = 0;
while (!ir_rx_byte) // wait to start receiving IR data...
{
if (timeout == 1250) // if we haven't received a byte for ~5 seconds, abort
{
DC16_Error(errRX, 0);
return;
}
if (!SW_MODE)
{
delay_ms(50); // poor man's debounce
while (!SW_MODE)
{
IR_RX_Off; // disable RX when we're done
led_state = ALL_OFF;
state = TX; // go to SLEEP mode to avoid sending data as soon as we cancel a receive
state_change_flag = 1;
}
return; // get outta here!
}
}
// if we get here, that means we've received a valid byte
ir_rx_byte = FALSE;
fileSize <<= 8;
fileSize |= ir_command;
}
if (fileSize == 0xFFFFFFFF) // we get this if one badge receives another badge's power on IR test string (the Sony TV power off code), so just ignore it
{
delay_ms(500);
return;
}
//else if ((fileSize > FAT16_MAX_FILE_SIZE) || (fileSize == 0)) // if the received file size is bigger than the possible FAT16 limit, we obviously have a corrupted transfer
else if ((fileSize > 131072) || (fileSize == 0)) // limit filesize to 128KB to reduce transfer errors and prevent people from standing in front of each other for hours!
{
// so abort...
if (usb_enabled_flag && USB_DETECT) Terminal_Send_String("Filesize error!\n\r");
DC16_Error(errRX, 0);
return;
}
// if the filename and file size appear to be valid, we can now proceed...
if (SD_PRESENT != HIGH)
{
u16Error=SD_Init(); // SD card init
if (u16Error == OK)
{
FAT_Read_Master_Block(); // FAT driver init
}
else
{
DC16_Error(errSD, u16Error);
return;
}
// see if a file already exists with the name we've just received
u16Error=FAT_FileOpen(gau8Minicom, READ);
if (u16Error == FILE_FOUND)
{
for (j = '0'; j <= '9'; ++j)
{
// replace the last character in the filename with a numeral
// this will let us receive 10 more files with the same name (0-9)
gau8Minicom[k-2] = (UINT8)j; // k is the index of the filename string
u16Error=FAT_FileOpen(gau8Minicom, READ);
if (u16Error != FILE_FOUND) break; // once we've found a filename that doesn't exist, we can move on...
}
}
if (WP_ENABLED == HIGH)
{
if (usb_enabled_flag && USB_DETECT) Terminal_Send_String("SD card write protect enabled.\n\r");
DC16_Error(errRX, 0);
return;
}
else
{
// create a new file on the SD card
u16Error=FAT_FileOpen(gau8Minicom, CREATE);
if (u16Error != FILE_CREATE_OK)
{
DC16_Error(errFAT, u16Error);
return;
}
}
}
else
{
if (usb_enabled_flag && USB_DETECT) Terminal_Send_String("No SD card inserted.\n\r");
state = TX; // go to SLEEP mode to avoid receiving unsynchronized data
state_change_flag = 1;
return;
}
if (usb_enabled_flag && USB_DETECT)
{
Terminal_Send_String("File name: ");
Terminal_Send_String(gau8Minicom);
Terminal_Send_String("\n\r");
itoa(fileSize, gau8Minicom, 12);
Terminal_Send_String("File size: ");
Terminal_Send_String(gau8Minicom);
Terminal_Send_String(" bytes\n\r");
Terminal_Send_String("Starting IR file receive.\n\r");
}
led_state = IGNORE; // set this so the timer interrupt routine doesn't mess with our LED output
do_cool_LED_stuff(ALL_OFF); // we're going to use LEDs as a transfer progress indicator, so we want complete control
progressCount = fileSize >> 3;
ledcnt = 0;
gu8Led = 0x00;
if (fileSize >= MINICOM_BUFFER_SIZE)
{
do
{
// assuming each block sent is MINICOM_BUFFER_SIZE (512 bytes), except for the last one which might be shorter
for (i = 0; i < MINICOM_BUFFER_SIZE; ++i)
{
timeout = 0;
while (!ir_rx_byte) // wait to start receiving IR data...
{
if (timeout == 1250) // if we haven't received a byte for ~5 seconds, abort
{
FAT_FileClose();
DC16_Error(errRX, 0);
return;
}
if (!SW_MODE)
{
delay_ms(50); // poor man's debounce
while (!SW_MODE)
{
IR_RX_Off; // disable RX when we're done
led_state = ALL_OFF;
state = TX; // go to SLEEP mode to avoid sending data as soon as we cancel a receive
state_change_flag = 1;
}
FAT_FileClose(); // properly close the file if we're aborting the transfer
return; // get outta here!
}
}
// if we get here, that means we've received a valid byte
ir_rx_byte = FALSE;
gau8Minicom[i] = ir_command;
fileSize--;
ledcnt++;
if (ledcnt == progressCount) // decrement LEDs as transfer progresses
{
ledcnt = 0;
gu8Led <<= 1;
gu8Led |= 1;
do_cool_LED_stuff(BYTE);
}
}
u16CRC = DC16_RX_CRC();
if (u16CRC == 0) return;
// calculate CRC16 checksum on this block
j = crc16_ccitt(gau8Minicom, MINICOM_BUFFER_SIZE);
if (usb_enabled_flag && USB_DETECT)
{
Terminal_Send_String("\n\rCRC16 = 0x");
Terminal_Send_String(num2asc((j >> 8) & 0xFF));
Terminal_Send_String(num2asc(j & 0xFF));
}
// if it doesn't match what we've just received, abort the transfer
if (u16CRC != j)
{
FAT_FileClose();
DC16_Error(errRX, 0);
return;
}
else // if it matches, write the data to the card
{
FAT_FileWrite(gau8Minicom,MINICOM_BUFFER_SIZE);
}
} while (fileSize >= MINICOM_BUFFER_SIZE);
}
