int16_t USBUART_CustomGetCount()
{
if (USBUART_DataIsReady() == 0)
{
return 0;
}
else
{
return USBUART_GetCount();
}
}
//"gets" function through USBUART instead of stdio
//echos the input
//terminates on CR or LF
//returns size of string
uint16 UARTgets(uint8 * str, int bufferSize){
uint16 i = 0;
uint16 size;
do{
while(USBUART_DataIsReady() == 0);
size = USBUART_GetCount();
if(size+i > bufferSize){
str[i]=0;
UARTprintf("gets: Buffer not big enough. Size: %d Input: %s\r\n", size, str);
return i;
}
USBUART_GetData(&(str[i]),size);
i+=size;
if(size == 1)UARTputc(str[i-1]); //echo if single char
}while((str[i-1] != '\n') && (str[i-1] != '\r'));
str[--i] = 0; //null terminate, remove the CR/LF
//UARTprintf("gets: LF or CR found at end of message. Size: %d Input: %s\r\n", size, str);
//while(USBUART_CDCIsReady()==0);
//USBUART_PutCRLF(); //print CRLF
return i;
}
int main()
{
CyGlobalIntEnable;
/* Start SPI bus. */
SDSPI_Start();
// set up the USB connection
USBUART_Start(0, USBUART_3V_OPERATION);
while(USBUART_GetConfiguration() == 0){};
USBUART_CDC_Init();
while(true) {
_USBBufDataCnt = USBUART_GetCount();
// when we get usb data, grab it and parse it
if (_USBBufDataCnt != 0) {
if (_USBBufDataCnt > 128) {
// too much data, do something (we throw away all the data)
while(_USBBufDataCnt > 128) {
USBUART_GetData(_USBRxBuffer, 128);
_USBBufDataCnt -= 128;
}
USBUART_GetData(_USBRxBuffer, _USBBufDataCnt);
}
else {
USBUART_GetData(_USBRxBuffer, _USBBufDataCnt);
bool parseRes = Parse_USBBuffer();
// if we got a vailid command, figure out what it was and run it
if (parseRes) {
if (!strcmp(_CmdBuf, "list")) {
List_Dir();
}
else if (!strcmp(_CmdBuf, "?")) {
Display_Help();
}
else if (!strcmp(_CmdBuf, "mount")) {
Mount_Disk(&_FatFs);
}
else if (!strcmp(_CmdBuf, "free")) {
Get_FreeSpace(&_FatFs);
}
else if (!strcmp(_CmdBuf, "print")) {
Print_File(_FnameBuf);
}
else if (!strcmp(_CmdBuf, "erase")) {
Erase_File(_FnameBuf);
}
else if (!strcmp(_CmdBuf, "create")) {
Create_File(_FnameBuf);
}
else if (!strcmp(_CmdBuf, "append")) {
Append_File(_FnameBuf, _DataBuf);
}
}
}
}
}
}
