protocol auto should use stc15a for stc15f204ea

Created by: zerog2k

noticing when I use protocol=auto, that it does not seem to work with stc15f204ea, but if I specify protocol stc15a, it will work.

jens@spire:~/build/stc_diyclock$ stcgal/stcgal.py -p /dev/ttyUSB0 -t 11059 -P auto -a main.hex
Cycling power: done
Waiting for MCU: done
Protocol detected: stc15
Target model:
  Name: STC15F204EA
  Magic: F394
  Code flash: 4.0 KB
  EEPROM flash: 1.0 KB
Target frequency: 0.000 MHz
Target BSL version: 6.7.12R
Target wakeup frequency: 2.689 KHz
Target options:
  reset_pin_enabled=True
  clock_source=external
  clock_gain=high
  watchdog_por_enabled=True
  watchdog_stop_idle=False
  watchdog_prescale=8
  low_voltage_reset=True
  low_voltage_threshold=1
  eeprom_lvd_inhibit=True
  eeprom_erase_enabled=True
  bsl_pindetect_enabled=True
  por_reset_delay=short
  rstout_por_state=high
  uart2_passthrough=False
  uart2_pin_mode=normal
  cpu_core_voltage=unknown
Loading flash: 3308 bytes (Intel HEX)
Switching to 19200 baud: Serial port error: read timeout
jens@spire:~/build/stc_diyclock$ 

jens@spire:~/build/stc_diyclock$ stcgal/stcgal.py -p /dev/ttyUSB0 -t 11059 -P stc15a -a main.hex
Cycling power: done
Waiting for MCU: done
Target model:
  Name: STC15F204EA
  Magic: F394
  Code flash: 4.0 KB
  EEPROM flash: 1.0 KB
Target frequency: 11.063 MHz
Target BSL version: 6.7R
Target options:
  reset_pin_enabled=True
  watchdog_por_enabled=False
  watchdog_stop_idle=False
  watchdog_prescale=256
  low_voltage_reset=True
  low_voltage_threshold=4
  eeprom_lvd_inhibit=True
  eeprom_erase_enabled=False
  bsl_pindetect_enabled=False
Loading flash: 3308 bytes (Intel HEX)
Trimming frequency: 11.063 MHz
Switching to 19200 baud: done
Erasing 14 blocks: done
Writing flash: 3648 Bytes [00:03, 1123.94 Bytes/s]                              
Finishing write: done
Setting options: done
Target UID: F39401A0056485
Disconnected!