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General purpose utilities, used all over the place.

To try (for tests, illustration...)

Build it:

 $ ../gradlew shadowJar

Email, remote command line:

Copy the email.properties.sample into email.properties, modify it to fit your account(s).

Note: Since the first version of this soft has been written, many email accounts now require an "App Password" to allow Java to reach your account. Keep that in mind when filling out the email.properties.
For example, an "App Password" for GMail would be auto-generated (from your account settings), and look like pqzlXXXXdrpflksz.

Then run:

 $ java -cp ./build/libs/common-utils-1.0-all.jar email.examples.EmailWatcher -send:google -receive:google

See Controlling invisible machines with emails, from Java for more details.

Pins

 $ java -cp ./build/libs/common-utils-1.0-all.jar utils.GenericPinUtil
 +-----+-----+--------------+-----++-----+--------------+-----+-----+
 | BCM | wPi | Name         |  Physical  |         Name | wPi | BCM |
 +-----+-----+--------------+-----++-----+--------------+-----+-----+
 |     |     | 3v3          | #01 || #02 |          5v0 |     |     |
 |  02 |  08 | SDA1         | #03 || #04 |          5v0 |     |     |
 |  03 |  09 | SCL1         | #05 || #06 |          GND |     |     |
 |  04 |  07 | GPCLK0       | #07 || #08 |    UART0_TXD | 15  | 14  |
 |     |     | GND          | #09 || #10 |    UART0_RXD | 16  | 15  |
 |  17 |  00 | GPIO_0       | #11 || #12 | PCM_CLK/PWM0 | 01  | 18  |
 |  27 |  02 | GPIO_2       | #13 || #14 |          GND |     |     |
 |  22 |  03 | GPIO_3       | #15 || #16 |       GPIO_4 | 04  | 23  |
 |     |     | 3v3          | #17 || #18 |       GPIO_5 | 05  | 24  |
 |  10 |  12 | SPI0_MOSI    | #19 || #20 |          GND |     |     |
 |  09 |  13 | SPI0_MISO    | #21 || #22 |       GPIO_6 | 06  | 25  |
 |  11 |  14 | SPI0_CLK     | #23 || #24 |   SPI0_CS0_N | 10  | 08  |
 |     |     | GND          | #25 || #26 |   SPI0_CS1_N | 11  | 07  |
 |     |  30 | SDA0         | #27 || #28 |         SCL0 | 31  |     |
 |  05 |  21 | GPCLK1       | #29 || #30 |          GND |     |     |
 |  06 |  22 | GPCLK2       | #31 || #32 |         PWM0 | 26  | 12  |
 |  13 |  23 | PWM1         | #33 || #34 |          GND |     |     |
 |  19 |  24 | PCM_FS/PWM1  | #35 || #36 |      GPIO_27 | 27  | 16  |
 |  26 |  25 | GPIO_25      | #37 || #38 |      PCM_DIN | 28  | 20  |
 |     |     | GND          | #39 || #40 |     PCM_DOUT | 29  | 21  |
 +-----+-----+--------------+-----++-----+--------------+-----+-----+
 | BCM | wPi | Name         |  Physical  |         Name | wPi | BCM |
 +-----+-----+--------------+-----++-----+--------------+-----+-----+

You can also label the header's pins, for user's convenience:

In the case of an MCP3008 for example, if you use the print method with labels like that:

 print("23:CLK", "21:Dout", "19:Din", "24:CS");

you would get an output like that:

As for an MCP3008:
       +-----+-----+--------------+-----++-----+--------------+-----+-----+
       | BCM | wPi | Name         |  Physical  |         Name | wPi | BCM |
       +-----+-----+--------------+-----++-----+--------------+-----+-----+
       |     |     | 3v3          | #01 || #02 |          5v0 |     |     |
       |  02 |  08 | SDA1         | #03 || #04 |          5v0 |     |     |
       |  03 |  09 | SCL1         | #05 || #06 |          GND |     |     |
       |  04 |  07 | GPCLK0       | #07 || #08 |    UART0_TXD | 15  | 14  |
       |     |     | GND          | #09 || #10 |    UART0_RXD | 16  | 15  |
       |  17 |  00 | GPIO_0       | #11 || #12 | PCM_CLK/PWM0 | 01  | 18  |
       |  27 |  02 | GPIO_2       | #13 || #14 |          GND |     |     |
       |  22 |  03 | GPIO_3       | #15 || #16 |       GPIO_4 | 04  | 23  |
       |     |     | 3v3          | #17 || #18 |       GPIO_5 | 05  | 24  |
   Din |  10 |  12 | SPI0_MOSI    | #19 || #20 |          GND |     |     |
  Dout |  09 |  13 | SPI0_MISO    | #21 || #22 |       GPIO_6 | 06  | 25  |
   CLK |  11 |  14 | SPI0_CLK     | #23 || #24 |   SPI0_CS0_N | 10  | 08  | CS
       |     |     | GND          | #25 || #26 |   SPI0_CS1_N | 11  | 07  |
       |     |  30 | SDA0         | #27 || #28 |         SCL0 | 31  |     |
       |  05 |  21 | GPCLK1       | #29 || #30 |          GND |     |     |
       |  06 |  22 | GPCLK2       | #31 || #32 |         PWM0 | 26  | 12  |
       |  13 |  23 | PWM1         | #33 || #34 |          GND |     |     |
       |  19 |  24 | PCM_FS/PWM1  | #35 || #36 |      GPIO_27 | 27  | 16  |
       |  26 |  25 | GPIO_25      | #37 || #38 |      PCM_DIN | 28  | 20  |
       |     |     | GND          | #39 || #40 |     PCM_DOUT | 29  | 21  |
       +-----+-----+--------------+-----++-----+--------------+-----+-----+
       | BCM | wPi | Name         |  Physical  |         Name | wPi | BCM |
       +-----+-----+--------------+-----++-----+--------------+-----+-----+

The labels are applied to the physical pin numbers.

Astro Computer

Moved to a astro-computer/AstroComputer.

Misc clients

TCP

  • From one terminal, start ./start.tcp.server.sh
  • From another terminal (one or more terminals), start ./start.tcp.client.sh
  • And see for yourself!

... and more to come!