/*********************************************************************
*
* SEGGER_RTT_WaitKey
*
* Function description
* Waits until at least one character is avaible in the SEGGER RTT buffer.
* Once a character is available, it is read and this function returns.
*
* Return value
* >=0 - Character which has been read.
*
* Notes
* (1) This function is only specified for accesses to RTT buffer 0
* (2) This function is blocking if no character is present in RTT buffer
*/
int SEGGER_RTT_WaitKey(void) {
int r;
do {
r = SEGGER_RTT_GetKey();
} while (r < 0);
return r;
}
/*********************************************************************
*
* main
*/
void main(void) {
int r;
int CancelOp;
do {
_Cnt = 0;
SEGGER_RTT_WriteString(0, "SEGGER Real-Time-Terminal Sample\r\n");
SEGGER_RTT_WriteString(0, "Press <1> to continue in blocking mode (Application waits if necessary, no data lost)\r\n");
SEGGER_RTT_WriteString(0, "Press <2> to continue in non-blocking mode (Application does not wait, data lost if fifo full)\r\n");
do {
r = SEGGER_RTT_WaitKey();
} while ((r != '1') && (r != '2'));
if (r == '1') {
SEGGER_RTT_WriteString(0, "\r\nSelected <1>. Configuring RTT and starting...\r\n");
SEGGER_RTT_ConfigUpBuffer(0, NULL, NULL, 0, SEGGER_RTT_MODE_BLOCK_IF_FIFO_FULL);
} else {
SEGGER_RTT_WriteString(0, "\r\nSelected <2>. Configuring RTT and starting...\r\n");
SEGGER_RTT_ConfigUpBuffer(0, NULL, NULL, 0, SEGGER_RTT_MODE_NO_BLOCK_SKIP);
}
CancelOp = 0;
do {
//for (_Delay = 0; _Delay < 10000; _Delay++);
SEGGER_RTT_printf(0, "Count: %d. Press <Space> to get back to menu.\r\n", _Cnt++);
r = SEGGER_RTT_HasKey();
if (r) {
CancelOp = (SEGGER_RTT_GetKey() == ' ') ? 1 : 0;
}
//
// Check if user selected to cancel the current operation
//
if (CancelOp) {
SEGGER_RTT_WriteString(0, "Operation cancelled, going back to menu...\r\n");
break;
}
} while (1);
SEGGER_RTT_GetKey();
SEGGER_RTT_WriteString(0, "\r\n");
} while (1);
}
//Detect Keystroke
int8_t getInput() {
int8_t curr_char = SEGGER_RTT_GetKey();
return curr_char;
}
