| 155 | } |
| 156 | |
| 157 | void Channel::handleRealtimeCharacter(uint8_t ch) { |
| 158 | uint32_t cmd = 0; |
| 159 | |
| 160 | if ((ch & 0xf8) == 0xf8) { |
| 161 | // 0xf8-0xff are not valid UTF-8 byte but can appear under some |
| 162 | // glitch conditions. |
| 163 | return; |
| 164 | } |
| 165 | int res = _utf8.decode(ch, cmd); |
| 166 | if (res == -1) { |
| 167 | // This can be caused by line noise on an unpowered pendant |
| 168 | log_debug("UTF8 decoding error " << to_hex(ch) << " " << to_hex(cmd)); |
| 169 | _active = false; |
| 170 | return; |
| 171 | } |
| 172 | if (res == 0) { |
| 173 | return; |
| 174 | } |
| 175 | // Otherwise res==1 and we have decoded a sequence so proceed |
| 176 | |
| 177 | _active = true; |
| 178 | if (cmd == PinACK) { |
| 179 | _ackwait = 0; |
| 180 | return; |
| 181 | } |
| 182 | if (cmd == PinNAK) { |
| 183 | log_verbose("NAK"); |
| 184 | _ackwait = -1; |
| 185 | return; |
| 186 | } |
| 187 | if (cmd == PinRST) { |
| 188 | _ackwait = -1; |
| 189 | send_alarm(ExecAlarm::ExpanderReset); |
| 190 | return; |
| 191 | } |
| 192 | if (cmd >= PinLowFirst && cmd < PinLowLast) { |
| 193 | pin_event(cmd - PinLowFirst, false); |
| 194 | return; |
| 195 | } |
| 196 | if (cmd >= PinHighFirst && cmd < PinHighLast) { |
| 197 | pin_event(cmd - PinHighFirst, true); |
| 198 | return; |
| 199 | } |
| 200 | execute_realtime_command(static_cast<Cmd>(cmd), *this); |
| 201 | } |
| 202 | |
| 203 | void Channel::push(uint8_t byte) { |
| 204 | if (is_realtime_command(byte)) { |
no test coverage detected