Commands listed in the table below are used in all modes of ST.
| Command | Sub Command | Description | ||
|---|---|---|---|---|
| set | mode | free | set mode: free | |
| output | pulse | set mode: output pulse | ||
| toggle | set mode: output toggle | |||
| pwm | set mode: output infinite pulse | |||
| div | sec | set unit: second | ||
| ms | set unit: millisecond | |||
| us | set unit: microsecond | |||
| reset | - | reset | ||
| get | state | get current state | ||
| start | - | start | ||
| stop | - | stop | ||
ST provides both normal counter mode (free mode) and output signal mode. There are three output modes and those are pulse, toggle and pwm. The pwm is infinite pulse mode. Default value of ST mode is free mode. The following table shows how to set ST to each mode.
| Mode | Syntax |
|---|---|
| free | pid_ioctl($pid, "set mode free"); |
| pulse | pid_ioctl($pid, "set mode output pulse"); |
| toggle | pid_ioctl($pid, "set mode output toggle"); |
| pwm | pid_ioctl($pid, "set mode output pwm"); |
ST provides three units as follows. The default value is millisecond.
| Unit | Syntax |
|---|---|
| second | pid_ioctl($pid, "set div sec"); |
| millisecond | pid_ioctl($pid, "set div ms"); |
| microsecond | pid_ioctl($pid, "set div us""); |
This command does:
| Command | Syntax |
|---|---|
| reset | pid_ioctl($pid, "reset"); |
This command gets the current state of ST.
| Command | Syntax |
|---|---|
| get state | pid_ioctl($pid, "get state"); |
Return values of this command are as follows:
| Return Value | Description |
|---|---|
| 0 | Stop |
| 1 ~ 5 | Running |
This command starts ST.
| Command | Syntax |
|---|---|
| start | pid_ioctl($pid, "start"); |
This command immediately stops operation of ST. In output modes, state of output pin keeps the current state.
| Command | Syntax |
|---|---|
| stop | pid_ioctl($pid, "stop"); |