05d4a917e5
The existing documentation shows the MISO and MOSI pins wrongly. As per the hardware document available at http://www.intel.com/content/dam/support/us/en/documents/ joule-products/intel-joule-dev-kit-hardware-guide.pdf pin2 should be MISO and pin 4, MOSI. Signed-off-by: Arun Ravindran <arun.ravindran@intel.com> Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
143 lines
4.9 KiB
Markdown
143 lines
4.9 KiB
Markdown
Intel Joule {#joule}
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===========
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[http://www.intel.com/joule](http://www.intel.com/joule)
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The Intel Joule expansion board is supported by Mraa
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Revision Support
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----------------
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Intel Joule expansion board
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Interface notes
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---------------
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**SPI**
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Two SPI buses are available, with one chipselect each. Pins listed are MRAA
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numbered pins. Other chip selects are available if enabled in BIOS/EEPROM but
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cannot be enabled as BIOS options. You will need the spidev kernel module
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loaded, Ostro-XT and ref-os-iot does this by default.
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Bus 0 (32765)
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MOSI = 4
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MISO = 2
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CS = 6
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CLK = 10
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Bus 1 (32766)
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MOSI = 67
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MISO = 69
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CS0 = 59
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CS1 = 61
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CLK = 65
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(remove 40 from numbers to get pin header number for pins on low speed header
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2)
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**UART** Some pins are labelled as UARTs but are not configured in BIOS as UART
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so only available UART is on the FTDI header. Disable the getty on ttyS2 and
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use mraa's uart raw mode to initialise on ttyS2. The Jumper J8 can be used to
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switch between using the FTDI 6 pin header and the micro USB output.
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Pin Mapping
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-----------
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The Intel Joule expansion board has two breakouts, breakout #1 is 1-40 whilst breakout2 is 41-80. The
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LEDs are numbered from 100-103.
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ISH UART are named as: IURT.
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ISH I2C are named as:IIC.
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| MRAA Number | Physical Pin | Function |
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|-------------|--------------|----------|
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| 1 | GPIO | GPIO |
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| 2 | SPP1RX | GPIO SPI |
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| 3 | PMICRST | NONE |
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| 4 | SPP1TX | GPIO SPI |
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| 5 | 19.2mhz | GPIO |
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| 6 | SPP1FS0 | GPIO SPI |
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| 7 | UART0TX | GPIO |
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| 8 | SPP1FS2 | GPIO SPI |
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| 9 | PWRGD | NONE |
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| 10 | SPP1CLK | GPIO SPI |
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| 11 | I2C0SDA | I2C |
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| 12 | I2S1SDI | GPIO |
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| 13 | I2C0SCL | I2C |
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| 14 | I2S1SDO | GPIO |
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| 15 | IIC0SDA | I2C |
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| 16 | I2S1WS | GPIO |
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| 17 | IIC0SCL | I2C |
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| 18 | I2S1CLK | GPIO |
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| 19 | IIC1SDA | I2C |
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| 20 | I2S1MCL | GPIO |
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| 21 | IIC1SCL | I2C |
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| 22 | UART1TX | UART |
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| 23 | I2S4SDO | NONE |
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| 24 | UART1RX | UART |
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| 25 | I2S4SDI | NONE |
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| 26 | PWM0 | GPIO PWM |
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| 27 | I2S4BLK | GPIO |
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| 28 | PWM1 | GPIO PWM |
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| 29 | I2S4WS | NONE |
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| 30 | PWM2 | GPIO PWM |
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| 31 | I2S3SDO | NONE |
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| 32 | PWM3 | GPIO PWM |
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| 33 | I2S3SDI | NONE |
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| 34 | 1.8V | NONE |
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| 35 | I2S4BLK | GPIO |
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| 36 | GND | NONE |
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| 37 | GND | NONE |
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| 38 | GND | NONE |
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| 39 | GND | NONE |
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| 40 | 3.3V | NONE |
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| 41 | GND | NONE |
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| 42 | 5V | NONE |
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| 43 | GND | NONE |
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| 44 | 5V | NONE |
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| 45 | GND | NONE |
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| 46 | 3.3V | NONE |
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| 47 | GND | NONE |
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| 48 | 3.3V | NONE |
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| 49 | GND | NONE |
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| 50 | 1.8V | NONE |
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| 51 | GPIO | GPIO |
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| 52 | 1.8V | NONE |
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| 53 | PANEL | GPIO |
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| 54 | GND | NONE |
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| 55 | PANEL | GPIO |
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| 56 | CAMERA | NONE |
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| 57 | PANEL | GPIO |
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| 58 | CAMERA | NONE |
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| 59 | SPP0FS0 | GPIO SPI |
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| 60 | CAMERA | NONE |
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| 61 | SPP0FS1 | GPIO SPI |
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| 62 | SPI_DAT | SPI |
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| 63 | SPP0FS2 | GPIO SPI |
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| 64 | SPICLKB | GPIO |
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| 65 | SPI0CLK | GPIO SPI |
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| 66 | SPICLKA | GPIO |
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| 67 | SPP0TX | GPIO SPI |
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| 68 | UART0RX | GPIO UART|
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| 69 | SPP0RX | GPIO SPI |
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| 70 | UART0RT | GPIO UART|
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| 71 | I2C1SDA | I2C |
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| 72 | UART0CT | GPIO UART|
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| 73 | I2C1SCL | I2C |
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| 74 | IURT0TX | GPIO UART|
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| 75 | I2C2SDA | I2C |
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| 76 | IURT0RX | GPIO UART|
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| 77 | I2C2SCL | I2C |
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| 78 | IURT0RT | GPIO UART|
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| 79 | RTC_CLK | GPIO |
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| 80 | IURT0CT | GPIO UART|
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| 100 | LED100 | GPIO |
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| 101 | LED101 | GPIO |
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| 102 | LED102 | GPIO |
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| 103 | LED103 | GPIO |
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| 104 | LEDWIFI | GPIO |
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| 105 | LEDBT | GPIO |
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To see a live pin mapping use the command:
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$ mraa-gpio list
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