Editing Alpha Clock Serial
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The serial interface is a "TTL Serial" type, connected directly to the microcontroller, and supports logic-level signals only. The interface is normally configured for 19,200 baud, 8N1. | The serial interface is a "TTL Serial" type, connected directly to the microcontroller, and supports logic-level signals only. The interface is normally configured for 19,200 baud, 8N1. | ||
− | For most applications a USB-TTL interface such as the [http:// | + | For most applications a USB-TTL interface such as the [http://evilmadscience.com/productsmenu/partsmenu/130-usbttl FTDI TTL-232R] or the Adafruit [http://evilmadscience.com/productsmenu/accessories/210 FTDI Friend] is an excellent choice. |
The FTDI interface connects to location J2 on the circuit board. | The FTDI interface connects to location J2 on the circuit board. | ||
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Note that the set of characters available (ASCII 32-96) is defined in the firmware. If you need to display characters not in that set, or would like to change the shape of the displayed characters, that can be made possible by editing and uploading a new version of the firmware. | Note that the set of characters available (ASCII 32-96) is defined in the firmware. If you need to display characters not in that set, or would like to change the shape of the displayed characters, that can be made possible by editing and uploading a new version of the firmware. | ||
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==== MT: Mode Time ==== | ==== MT: Mode Time ==== | ||
− | The MT function is used to resume | + | The MT function is used to resume time display mode, after command A0 has been issued. |
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* B* (B, followed by any character) | * B* (B, followed by any character) | ||
* SA (May be used for Set Alarm time in future firmware) | * SA (May be used for Set Alarm time in future firmware) | ||
− | * SB (May be used for Set Brightness in future firmware) | + | * SB (May be used for Set Brightness in future firmware) |
− | * M* Where * is in the range 2-9 | + | * M0 (May be used for Alarm Off in future firmware) |
+ | * M1 (May be used for Alarm On in future firmware) | ||
+ | * M* Where * is in the range 2-9 | ||
* TP (May be used for producing sounds in future firmware) | * TP (May be used for producing sounds in future firmware) |