void check_debug_uart(void) {
static uint8_t inputbuf[RX_LINE_SIZE], inputptr = 0;
uint8_t i, recv;
int16_t ticks;
while(uart_available(DEBUG)) {
recv = uart_get(DEBUG);
if(recv == '\r') {
fprintf(&debug, "\r\n");
if(inputptr) {
switch(inputbuf[0]) {
case '?': // print drive command list
fprintf_P(&debug, PSTR("stop() ........................ | p00\r\n"));
fprintf_P(&debug, PSTR("fwd_both(speed) ............... | p0300, p0400, p15 u8\r\n"));
fprintf_P(&debug, PSTR("rev_both(speed) ............... | p0301, p0401, p15 u8\r\n"));
fprintf_P(&debug, PSTR("forward(Lspeed, Rspeed) ....... | p0300, p0400, p11 u8, p12 u8\r\n"));
fprintf_P(&debug, PSTR("reverse(Lspeed, Rspeed) ....... | p0301, p0401, p11 u8, p12 u8\r\n"));
fprintf_P(&debug, PSTR("turnCCW(Lspeed, Rspeed) ....... | p0301, p0400, p11 u8, p12 u8\r\n"));
fprintf_P(&debug, PSTR("turnCW (Lspeed, Rspeed) ....... | p0300, p0401, p11 u8, p12 u8\r\n"));
fprintf_P(&debug, PSTR("set_abs_pos(pos) .............. | p1a s16\r\n"));
fprintf_P(&debug, PSTR("set_rel_pos(sect, pos) ........ | p1b u8 u8\r\n"));
fprintf_P(&debug, PSTR("pos_corr_on() ................. | p1f01\r\n"));
fprintf_P(&debug, PSTR("pos_corr_off() ................ | p1f00\r\n"));
fprintf_P(&debug, PSTR("nav_abs_pos(speed, pos) ....... | p31 u8 s16\r\n"));
fprintf_P(&debug, PSTR("nav_rel_pos(speed, sect, pos) . | p32 u8 u8 u8\r\n"));
break;
case 'p': // passthrough to DRIVE MCU
for(i = 1; i < inputptr; i++) { uart_put(DRIVE, inputbuf[i]); }
uart_put(DRIVE, '\r');
break;
case 'r': // toggle reverse passthrough from DRIVE MCU
rev_passthru ^= 1;
break;
case 'd': // local dump on/off
local_dump ^= 1;
break;
case 's': // start/stop main thread
run_main ^= 1;
if(run_main) { fprintf_P(&debug, PSTR("Main thread started!\r\n")); }
else { fprintf_P(&debug, PSTR("Main thread stopped!\r\n")); stop(); }
break;
case 't': // start/stop test thread
if(inputptr != 2) { cmd_err(); break; }
run_test = htoa(0, inputbuf[1]);
if(!run_test) { fprintf_P(&debug, PSTR("All test sequences stopped!\r\n")); stop(); }
else { fprintf_P(&debug, PSTR("Started test sequence %u!\r\n"), run_test); }
break;
case ' ': // stop all motors
run_main = 0;
run_test = 0;
pid_on = 0;
stop();
set_speed_3(0);
set_speed_4(0);
break;
case 'u':
fprintf_P(&debug, PSTR("%lu\r\n"), uptime());
break;
case 'b':
#define VBAT_FACTOR 0.0044336
fprintf_P(&debug, PSTR("4 x %1.2fV\r\n"), (float)read_adc(VSENS) * VBAT_FACTOR);
break;
case 'm': // servo power
if(inputptr != 2 || (inputbuf[1] & ~1) != '0') { cmd_err(); break; }
inputbuf[1] == '0' ? clr_bit(SPWR) : set_bit(SPWR);
break;
case '9': // magnets
if(inputptr != 2 || (inputbuf[1] & ~1) != '0') { cmd_err(); break; }
if(inputbuf[1] == '0') { clr_bit(FET1); clr_bit(FET2); fprintf_P(&debug, PSTR("Magnets off!\r\n")); }
else { set_bit(FET1); set_bit(FET2); fprintf_P(&debug, PSTR("Magnets on!\r\n")); }
break;
case '1': // PID on/off
if(inputptr != 2 || (inputbuf[1] & ~1) != '0') { cmd_err(); break; }
if(inputbuf[1] == '0') { pid_on = 0; fprintf_P(&debug, PSTR("PID off!\r\n")); }
else { pid_on = 1; fprintf_P(&debug, PSTR("PID on!\r\n")); reset_pid(); }
break;
case '3': // turn motor commands
if(!isHex(inputbuf[2]) || !isHex(inputbuf[3])) { cmd_err(); break; }
switch(inputbuf[1]) {
case '0': // forward (uint8_t speed)
if(inputptr != 4) { cmd_err(); break; }
motor3_fwd();
set_speed_3(htoa(inputbuf[2], inputbuf[3]) * 40);
break;
case '1': // reverse (uint8_t speed)
if(inputptr != 4) { cmd_err(); break; }
motor3_rev();
set_speed_3(htoa(inputbuf[2], inputbuf[3]) * 40);
break;
case '2': // set reference target (int16_t ticks)
if(inputptr != 6 || !isHex(inputbuf[4]) || !isHex(inputbuf[5])) { cmd_err(); break; }
pid_target[MOTOR3] = htoa(inputbuf[2], inputbuf[3]) << 8 | htoa(inputbuf[4], inputbuf[5]);
break;
case '3': // set reference speed (int16_t ticks)
if(inputptr != 6 || !isHex(inputbuf[4]) || !isHex(inputbuf[5])) { cmd_err(); break; }
pid_speed[MOTOR3] = htoa(inputbuf[2], inputbuf[3]) << 8 | htoa(inputbuf[4], inputbuf[5]);
break;
case '4': // set P (int16_t factor)
if(inputptr != 6 || !isHex(inputbuf[4]) || !isHex(inputbuf[5])) { cmd_err(); break; }
//ENC3_P = htoa(inputbuf[2], inputbuf[3]) << 8 | htoa(inputbuf[4], inputbuf[5]);
break;
case '5': // set I (int16_t factor)
if(inputptr != 6 || !isHex(inputbuf[4]) || !isHex(inputbuf[5])) { cmd_err(); break; }
//ENC3_I = htoa(inputbuf[2], inputbuf[3]) << 8 | htoa(inputbuf[4], inputbuf[5]);
break;
case '6': // set D (int16_t factor)
if(inputptr != 6 || !isHex(inputbuf[4]) || !isHex(inputbuf[5])) { cmd_err(); break; }
//ENC3_D = htoa(inputbuf[2], inputbuf[3]) << 8 | htoa(inputbuf[4], inputbuf[5]);
break;
case '7': // set noise gate (int16_t level)
if(inputptr != 6 || !isHex(inputbuf[4]) || !isHex(inputbuf[5])) { cmd_err(); break; }
//ENC3_NOISE_GATE = htoa(inputbuf[2], inputbuf[3]) << 8 | htoa(inputbuf[4], inputbuf[5]);
break;
case 'f': // set reference angle
if(inputptr != 6 || !isHex(inputbuf[4]) || !isHex(inputbuf[5])) { cmd_err(); break; }
ticks = deg2ticks(htoa(inputbuf[2], inputbuf[3]) << 8 | htoa(inputbuf[4], inputbuf[5]));
cli();
V_encoder = ticks;
sei();
reset_pid();
break;
default:
cmd_err();
}
break;
case '4': // lift motor commands
if(!isHex(inputbuf[2]) || !isHex(inputbuf[3])) { cmd_err(); break; }
switch(inputbuf[1]) {
case '0': // up (uint8_t speed)
if(inputptr != 4) { cmd_err(); break; }
motor4_fwd();
set_speed_4(htoa(inputbuf[2], inputbuf[3]) * 40);
break;
case '1': // down (uint8_t speed)
if(inputptr != 4) { cmd_err(); break; }
motor4_rev();
set_speed_4(htoa(inputbuf[2], inputbuf[3]) * 40);
break;
case '2': // set reference target (int16_t ticks)
if(inputptr != 6 || !isHex(inputbuf[4]) || !isHex(inputbuf[5])) { cmd_err(); break; }
pid_target[MOTOR4] = htoa(inputbuf[2], inputbuf[3]) << 8 | htoa(inputbuf[4], inputbuf[5]);
break;
case '3': // set reference speed (int16_t ticks)
if(inputptr != 6 || !isHex(inputbuf[4]) || !isHex(inputbuf[5])) { cmd_err(); break; }
pid_speed[MOTOR4] = htoa(inputbuf[2], inputbuf[3]) << 8 | htoa(inputbuf[4], inputbuf[5]);
break;
case '4': // set P (int16_t factor)
if(inputptr != 6 || !isHex(inputbuf[4]) || !isHex(inputbuf[5])) { cmd_err(); break; }
//ACTU_P = htoa(inputbuf[2], inputbuf[3]) << 8 | htoa(inputbuf[4], inputbuf[5]);
break;
case '5': // set I (int16_t factor)
if(inputptr != 6 || !isHex(inputbuf[4]) || !isHex(inputbuf[5])) { cmd_err(); break; }
//ACTU_I = htoa(inputbuf[2], inputbuf[3]) << 8 | htoa(inputbuf[4], inputbuf[5]);
break;
case '6': // set D (int16_t factor)
if(inputptr != 6 || !isHex(inputbuf[4]) || !isHex(inputbuf[5])) { cmd_err(); break; }
//ACTU_D = htoa(inputbuf[2], inputbuf[3]) << 8 | htoa(inputbuf[4], inputbuf[5]);
break;
case '7': // set noise gate (int16_t level)
if(inputptr != 6 || !isHex(inputbuf[4]) || !isHex(inputbuf[5])) { cmd_err(); break; }
//ACTU_NOISE_GATE = htoa(inputbuf[2], inputbuf[3]) << 8 | htoa(inputbuf[4], inputbuf[5]);
break;
default:
cmd_err();
}
break;
case '5': // servo5 commands
if(inputptr != 4 || !isHex(inputbuf[2]) || !isHex(inputbuf[3])) { cmd_err(); break; }
servo5(htoa(inputbuf[2], inputbuf[3]));
//OCR0A = htoa(inputbuf[1], inputbuf[2]);
break;
case '6': // servo6 commands
if(inputptr != 4 || !isHex(inputbuf[2]) || !isHex(inputbuf[3])) { cmd_err(); break; }
servo6(htoa(inputbuf[2], inputbuf[3]));
//OCR0B = htoa(inputbuf[1], inputbuf[2]);
break;
case '7': // servo7 commands
if(inputptr != 4 || !isHex(inputbuf[2]) || !isHex(inputbuf[3])) { cmd_err(); break; }
servo7(htoa(inputbuf[2], inputbuf[3]));
//OCR2A = htoa(inputbuf[1], inputbuf[2]);
break;
case '8': // servo8 commands
if(inputptr != 4 || !isHex(inputbuf[2]) || !isHex(inputbuf[3])) { cmd_err(); break; }
servo8(htoa(inputbuf[2], inputbuf[3]));
//OCR2B = htoa(inputbuf[1], inputbuf[2]);
break;
case 'x':
if(!isHex(inputbuf[2]) || !isHex(inputbuf[3])) { cmd_err(); break; }
switch(inputbuf[1]) {
case '1': // set reference angle
if(inputptr != 6 || !isHex(inputbuf[4]) || !isHex(inputbuf[5])) { cmd_err(); break; }
param1 = htoa(inputbuf[2], inputbuf[3]) << 8 | htoa(inputbuf[4], inputbuf[5]);
break;
case '2': // set reference angle
if(inputptr != 6 || !isHex(inputbuf[4]) || !isHex(inputbuf[5])) { cmd_err(); break; }
param2 = htoa(inputbuf[2], inputbuf[3]) << 8 | htoa(inputbuf[4], inputbuf[5]);
break;
case '3': // set reference angle
if(inputptr != 6 || !isHex(inputbuf[4]) || !isHex(inputbuf[5])) { cmd_err(); break; }
param3 = htoa(inputbuf[2], inputbuf[3]) << 8 | htoa(inputbuf[4], inputbuf[5]);
break;
case '4': // set reference angle
if(inputptr != 6 || !isHex(inputbuf[4]) || !isHex(inputbuf[5])) { cmd_err(); break; }
param4 = htoa(inputbuf[2], inputbuf[3]) << 8 | htoa(inputbuf[4], inputbuf[5]);
break;
case '5': // set reference angle
if(inputptr != 6 || !isHex(inputbuf[4]) || !isHex(inputbuf[5])) { cmd_err(); break; }
param5 = htoa(inputbuf[2], inputbuf[3]) << 8 | htoa(inputbuf[4], inputbuf[5]);
break;
}
break;
default:
cmd_err();
}
inputptr = 0;
}
}
else if(recv == 0x7f) {
if(!inputptr) { uart_put(DEBUG, '\a'); }
else {
fprintf(&debug, "\b\e[K");
inputptr--;
}
}
else {
if(inputptr == RX_LINE_SIZE) { uart_put(DEBUG, '\a'); }
else {
uart_put(DEBUG, recv);
inputbuf[inputptr] = recv;
inputptr++;
}
}
}
static void signal_pid_completion(void *tinst, struct user_input_state *s) {
const char *signame;
int sig;
int err;
uid_t euid;
gid_t egid;
int saved_errno = 0;
pid_t pid;
if(is_empty(s->buf)) {
/*
* Any empty buffer indicates that the user didn't want
* to signal the process after all.
*/
reset_pid(s);
user_input_set_state(NULL);
return;
}
if(!is_pid(s->buf)) {
reset_pid(s);
user_input_set_error_state("invalid pid");
return;
}
pid = atoi(s->buf);
reset_pid(s);
sig = top_prefs_get_signal(&signame);
/* Temporarily drop permissions. */
euid = geteuid();
egid = getegid();
if(-1 == seteuid(getuid())
|| -1 == setegid(getgid())) {
user_input_set_error_state("missing setuid bit");
return;
}
err = kill(pid, sig);
if(-1 == err)
saved_errno = errno;
if(-1 == seteuid(euid)
|| -1 == setegid(egid)) {
user_input_set_error_state("restoring setuid bit");
return;
}
switch(saved_errno) {
case EINVAL:
user_input_set_error_state("invalid signal");
return;
case ESRCH:
user_input_set_error_state("invalid pid");
return;
case EPERM:
user_input_set_error_state("permission error signaling");
return;
}
user_input_set_state(NULL);
}
