diff options
Diffstat (limited to 'utility/demo-fw/common/dfm_console.c')
| -rw-r--r-- | utility/demo-fw/common/dfm_console.c | 216 |
1 files changed, 216 insertions, 0 deletions
diff --git a/utility/demo-fw/common/dfm_console.c b/utility/demo-fw/common/dfm_console.c new file mode 100644 index 0000000..7118a11 --- /dev/null +++ b/utility/demo-fw/common/dfm_console.c @@ -0,0 +1,216 @@ +//------------------------------------------------------------------------------
+// Headers
+//------------------------------------------------------------------------------
+
+#include <string.h>
+#include <dbgu/dbgu.h>
+#include <stdio.h>
+
+#include "dfm_console.h"
+#include "dfm_entry.h"
+#include "dfm_cmd.h"
+
+//------------------------------------------------------------------------------
+// Internal variables
+//------------------------------------------------------------------------------
+
+///DBGU input buffer
+static char gpConsoleBuffer[DBGU_CMDBUFSIZE];
+
+///prompt refresh flag
+static unsigned char gDBGUPromptFlag = 0;
+
+///erase sequence
+static char gpEraseSeq[] = "\b \b";
+///used to expand TABS
+static char gpTabSeq[] = " ";
+
+//------------------------------------------------------------------------------
+// Export variables
+//------------------------------------------------------------------------------
+
+// global DBGU entry
+TInputEntry gDBGUEntry = \
+ {0, {NULL,NULL},DBGU_ShowPrompt, DBGU_CommandIsReady, DBGU_GetCommand, NULL};
+
+//------------------------------------------------------------------------------
+// Internal functions
+//------------------------------------------------------------------------------
+
+//------------------------------------------------------------------------------
+/// output a string to console
+/// \param pStr, string to output to DBGU console
+//------------------------------------------------------------------------------
+static inline void DBGU_puts(const char *pStr)
+{
+ while(*pStr) {
+ DBGU_PutChar(*pStr++);
+ }
+}
+
+//------------------------------------------------------------------------------
+/// remove charaters from buffer positions
+//------------------------------------------------------------------------------
+static char * DBGU_RemoveCharFromBuf (char *buffer, char *p, int *colp, int *np, int plen)
+{
+ char *s;
+
+ if (*np == 0) {
+ return (p);
+ }
+
+ if (*(--p) == '\t') {
+ while (*colp > plen) {
+ DBGU_puts (gpEraseSeq);
+ (*colp)--;
+ }
+ for (s=buffer; s<p; ++s) {
+ if (*s == '\t') {
+ DBGU_puts (gpTabSeq+((*colp) & 07));
+ *colp += 8 - ((*colp) & 07);
+ } else {
+ ++(*colp);
+ DBGU_PutChar (*s);
+ }
+ }
+ } else {
+ DBGU_puts (gpEraseSeq);
+ (*colp)--;
+ }
+ (*np)--;
+ return (p);
+}
+
+//------------------------------------------------------------------------------
+/// Check console is ready?
+/// \return 0 not ready, other value means ready and command string length
+//------------------------------------------------------------------------------
+unsigned int DBGU_CommandIsReady()
+{
+ unsigned char c;
+ static char *p = gpConsoleBuffer;
+ int escflag = 0;
+ char * p_buf = gpConsoleBuffer;
+ static int n = 0; // buffer index
+ int plen = 0; // prompt length
+ static int col=0; // output column cnt
+ unsigned int cmdLen;
+
+ plen = strlen(GS_SHELL_PROMPT);
+
+ //right beginning of a new command input
+ if(col == 0)
+ col = plen;
+
+Tag_for_CombinedKey:
+
+ if(DBGU_IsRxReady()) {
+ c = DBGU_GetChar();
+
+ //
+ // Special character handling
+ //
+ switch (c) {
+ case '\r': // Enter
+ case '\n':
+ *p = '\0';
+ cmdLen = p - p_buf;
+ p = gpConsoleBuffer;
+ n = 0; //clear buffer index as 0
+ col = 0; // this is set for indicate next time input considered as new command
+ gDBGUPromptFlag = 1;//DBGU_puts ("\r\n");
+ return cmdLen;
+
+ case '\0': // nul
+ return 0;
+
+ case 0x03: // ^C - break
+ //p_buf[0] = '\0'; // discard input
+ return 0;
+
+ case 0x15: // ^U - erase line
+ while (col > plen) {
+ DBGU_puts (gpEraseSeq);
+ --col;
+ }
+ p = p_buf;
+ n = 0;
+ return 0;
+
+ case 0x17: // ^W - erase word
+ p=DBGU_RemoveCharFromBuf(p_buf, p, &col, &n, plen);
+ while ((n > 0) && (*p != ' ')) {
+ p=DBGU_RemoveCharFromBuf(p_buf, p, &col, &n, plen);
+ }
+ return 0;
+
+ case 0x08: // ^H - backspace
+ case 0x7F: // DEL - backspace
+ p=DBGU_RemoveCharFromBuf(p_buf, p, &col, &n, plen);
+ return 0;
+
+ case 0x1b: // arrow, home flag
+ escflag = 1;
+ goto Tag_for_CombinedKey;//in window hyperterminal, arrow and home flag
+ // keys are combined 1b + x
+
+ case 'D': //ignore arrow,home key
+ case 'C':
+ case 'H':
+ case 'A':
+ case 'B':
+ if(escflag) {
+ escflag = 0;
+ return 0;
+ }
+
+
+ default:
+ //
+ // Must be a normal character then
+ //
+ if (n < DBGU_CMDBUFSIZE-2) {
+ if (c == '\t') { // expand TABs
+ DBGU_puts (gpTabSeq+(col&07));
+ col += 8 - (col&07);
+ } else {
+ ++col; // echo input
+ DBGU_PutChar (c);
+ }
+ *p++ = c;
+ ++n;
+ } else { // Buffer full
+ DBGU_PutChar ('\a');
+ }
+ }
+ }
+
+ return 0;
+}
+
+//------------------------------------------------------------------------------
+/// get a const pointer to global console input buffer
+/// \return pointer to global DBGU console input buffer
+//------------------------------------------------------------------------------
+const char * DBGU_GetCommand() {
+ return (const char *)gpConsoleBuffer;
+}
+
+//------------------------------------------------------------------------------
+/// Show DBGU console prompt information
+/// \return 0, success
+//------------------------------------------------------------------------------
+int DBGU_ShowPrompt()
+{
+
+#if defined(GS_SHELL_PROMPT)
+ // print prompt
+ if(gDBGUPromptFlag) {
+ DBGU_puts("\n\r");
+ DBGU_puts (GS_SHELL_PROMPT);
+ gDBGUPromptFlag = 0;
+ }
+#endif
+
+ return 0;
+}
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