void shell_restore_lastcmd(unsigned char down) {
if (down == 1) {
if (shell_lastcmd_ptr > 0) {
shell_lastcmd_ptr--;
}
}
if (shell_lastcmd[shell_lastcmd_ptr][0] != 0) {
int i = 0;
unsigned char chars = shell_wptr;
// Remove old chars by sending backspaces
for (i = 0; i < chars; i++) {
shell_process_char(127);
}
// "Type" last command
chars = strlen((char*)shell_lastcmd[shell_lastcmd_ptr]);
for (i = 0; i < chars; i++) {
shell_process_char(shell_lastcmd[shell_lastcmd_ptr][i]);
}
//memset(shell_lastcmd[0], 0, sizeof(shell_lastcmd[0]));
if (shell_lastcmd_ptr < SHELL_MAX_LASTCOMMANDS - 1 && down == 0) {
if (shell_lastcmd[shell_lastcmd_ptr + 1][0] != 0) {
shell_lastcmd_ptr++;
}
}
}
}
void Shell_Main(void) {
shell_flush_buf();
shell_cmd_prompt();
shell_escape_state = 0;
while (1) {
char c = 0;
while (dbgu_char_available()) {
// read one byte from serial port
c = dbgu_get_char();
shell_process_char(c);
}
}
}
LOCAL void ICACHE_FLASH_ATTR shell_task(void *pvParameters)
{
os_event_t e;
char ch;
for (;;)
{
if (xQueueReceive(xQueueUart, (void *)&e, (portTickType)portMAX_DELAY))
{
switch (e.event)
{
case UART_EVENT_RX_CHAR:
ch = (char)e.param;
shell_process_char(ch);
break;
default:
break;
}
}
}
vTaskDelete(NULL);
}
void shell_process_char(char c) {
// if the first byte is ' ' or '\n', ignore it
if ((0 == shell_wptr) && (' ' == c || '\r' == c)) {
shell_cmd_prompt();
return;
}
// if '\n' is read, execute the command
if ('\r' == c) {
shell_cmd_execute();
}
// if ' ' is read, record the parameter ptr
else if (' ' == c) {
dbgu_print_char(c);
// damping the space
if (shell_buf[shell_wptr - 1]) {
// replace it with NULL
shell_buf[shell_wptr] = 0;
shell_wptr++;
// record the parameter address
int i = 0;
for (i = 0; i < SHELL_PARA_CNT_MAX; i++) {
if (!shell_para_ptr[i]) {
shell_para_ptr[i] = (char*) (&shell_buf[shell_wptr]);
break;
}
}
if (SHELL_PARA_CNT_MAX == i) {
shell_cmd_execute();
return;
}
}
} else if (127 == c || 8 == c) { // Backspace
if (shell_wptr > 0) {
dbgu_printf("\b \b");
shell_wptr--;
if (shell_buf[shell_wptr] == '\0') {
// Delete last parameter
int i = 0;
for (i = SHELL_PARA_CNT_MAX - 1; i >= 0; --i) {
if (shell_para_ptr[i]) {
shell_para_ptr[i] = 0;
break;
}
}
}
shell_buf[shell_wptr] = 0;
}
} else if (27 == c) { // Escape char
shell_escape_state = 1;
} else if (0xe0 == (c & 0xFF)) { // Escape char
shell_escape_state = 2;
} else if (shell_escape_state == 1) {
if (c == 91) {
shell_escape_state = 2;
} else {
shell_escape_state = 0;
}
} else if (shell_escape_state == 2) {
shell_escape_state = 0;
if (c == 65 || c == 0x48) { // Up key
shell_restore_lastcmd(0);
} else if (c == 66 || c == 0x50) { // Down key
shell_restore_lastcmd(1);
}
} else if (c == 9) { // Tab
if (shell_para_ptr[0] == 0) { // Only allow completion when entering command, not parameters
unsigned char i = 0;
unsigned char match = 0xFF;
unsigned char matchcnt = 0;
unsigned char matchlen = 0;
while (0 != (shell_cmd_set[i].name)) {
if (!strncmp((char*)shell_buf, shell_cmd_set[i].name, shell_wptr)) {
matchcnt++;
if (matchcnt == 1) {
match = i;
matchlen = strlen(shell_cmd_set[i].name);
} else {
// More than one match, so list
if (matchcnt == 2) {
// Print last match
dbgu_printf("\r\n%s ", shell_cmd_set[match].name);
}
dbgu_printf("%s ", shell_cmd_set[i].name);
// Find how many chars are the same
if (matchlen > strlen(shell_cmd_set[i].name)) {
matchlen = strlen(shell_cmd_set[i].name);
}
for (unsigned char j = matchlen; j > 0; --j) {
if (shell_cmd_set[i].name[j] != shell_cmd_set[match].name[j]) {
matchlen = j;
}
}
}
}
i++;
}
if (matchcnt == 1) {
unsigned char len = strlen(shell_cmd_set[match].name);
for (i = shell_wptr; i < len; ++i) {
shell_process_char(shell_cmd_set[match].name[i]);
}
shell_process_char(' ');
} else if (matchcnt > 1) {
if (matchlen > shell_wptr) {
for (i = shell_wptr; i < matchlen; ++i) {
shell_buf[shell_wptr] = shell_cmd_set[match].name[i];
shell_wptr++;
if (shell_wptr == SHELL_CMD_LENGH_MAX) {
shell_cmd_execute();
}
}
}
dbgu_printf("\r\n");
shell_cmd_prompt();
for (i = 0; i < shell_wptr; ++i) {
dbgu_print_char(shell_buf[i]);
}
}
}
}
// other characters, just record it
else {
dbgu_print_char(c);
shell_buf[shell_wptr] = c;
shell_wptr++;
if (shell_wptr == SHELL_CMD_LENGH_MAX) {
shell_cmd_execute();
}
}
}
