Intel Edison {#edison} ============= Intel(R) Edison is a dual core Silvermont Atom(TM) clocked at 500MHz. The Edison also features 4GB of storage, 1GB ram and onboard wifi and bluetooth. Currently Supported boards: - Intel Arduino board - Intel breakout board UART ---- On both the Arduino board and the breakout board, The avaible UART interface is on /dev/ttyMFD1 Intel Arduino board ------------------- The Edison used with the Arduino board has the following limitations in libmraa: - i2c is exposed on i2c-6, therfore you must use bus 6 and not bus 0 - PWM avaible on default swizzler postions. (3,5,6,9) - SPI exposed is also used for the ADC. Try not to use your own CS. - Max SPI speed is 25Mhz/4 ~6.25Mhz - SPI PM can sometimes do weird things you can disable it with: echo on > /sys/devices/pci0000\:00/0000\:00\:07.1/power/control - ADC kernel module will return 12bit number but the ADC itself only has an accuracy of 10bits. This ADC is only included on the arduino board. - AIO pins are treated as 0-5 in mraa_aio_init() but as 14-19 for everything else. Therefore use mraa_gpio_init(14) to use A0 as a Gpio - Arduino pin 7 can sometimes negatively impact the wifi capability, if using wifi avoid using this pin Because of the way IO is setup with the tristate on the arduino breakout board IO will be flipped as it is setup. It's recommended to setup IO pins & direction before using them in a setup() method or similar. It's impossible on this platform to avoid some GPIOs flipping on setup. Intel(R) breakout board ----------------------- - Both I2C buses are avaible 1 & 6 - IO on the miniboard is 1.8V Please see the following table on how the physical pins map to mraa pin numbers | MRAA Number | Physical Pin | Edison Pin | Notes | Pinmode0 | Pinmode1 | Pinmode2 | |-------------|--------------|---------------|-------------------------|----------|------------|----------| | 0 | J17-1 | GP182 | | GPIO-182 | PWM2 | | | 1 | J17-2 | NC | Nothing from mraa | | | | | 2 | J17-3 | NC | Nothing from mraa | | | | | 3 | J17-4 | VIN | Nothing from mraa | | | | | 4 | J17-5 | GP135 | | GPIO-135 | UART | | | 5 | J17-6 | RCVR_MODE | Nothing from mraa | | | | | 6 | J17-7 | GP27 | | GPIO-27 | I2C-6-SCL | | | 7 | J17-8 | GP20 | | GPIO-20 | I2C-1-SDA | | | 8 | J17-9 | GP28 | | GPIO-28 | I2C-6-SDA | | | 9 | J17-10 | GP111 | | GPIO-111 | SPI-5-CS1 | | | 10 | J17-11 | GP109 | | GPIO-109 | SPI-5-SCK | | | 11 | J17-12 | GP115 | | GPIO-115 | SPI-5-MOSI | | | 12 | J17-13 | OSC_CLK_OUT_0 | Nothing from mraa/check | | | | | 13 | J17-14 | GP128 | | GPIO-128 | UART-1-CTS | | | 14 | J18-1 | GP13 | | GPIO-13 | PWM1 | | | 15 | J18-2 | GP165 | | GPIO-165 | | | | 16 | J18-3 | GPI_PWRBTN_N | Nothing from mraa | | | | | 17 | J18-4 | MSIC_SLP_CLK2 | Nothing from mraa | | | | | 18 | J18-5 | V_VBAT_BKUP | Nothing from mraa | | | | | 19 | J18-6 | GP19 | | GPIO-19 | I2C-1-SCL | | | 20 | J18-7 | GP12 | PWM0 | GPIO-12 | PWM0 | | | 21 | J18-8 | GP183 | PWM3 | GPIO-183 | PWM3 | | | 22 | J18-9 | NC | Nothing from mraa | | | | | 23 | J18-10 | GP110 | | GPIO-110 | SPI-5-CS0 | | | 24 | J18-11 | GP114 | | GPIO-114 | SPI-5-MISO | | | 25 | J18-12 | GP129 | | GPIO-129 | UART-1-RTS | | | 26 | J18-13 | GP130 | | GPIO-130 | UART-1-RX | | | 27 | J18-14 | FW_RCVR | Nothing from mraa | | | | | 28 | J19-1 | NC | Nothing from mraa | | | | | 29 | J19-2 | V_V1P80 | Nothing from mraa | | | | | 30 | J19-3 | GND | Nothing from mraa | | | | | 31 | J19-4 | GP44 | | GPIO-44 | | | | 32 | J19-5 | GP46 | | GPIO-46 | | | | 33 | J19-6 | GP48 | | GPIO-48 | | | | 34 | J19-7 | RESET_OUT | Nothing from mraa | | | | | 35 | J19-8 | GP131 | | GPIO-131 | UART-1-TX | | | 36 | J19-9 | GP14 | | GPIO-14 | | | | 37 | J19-10 | GP40 | | GPIO-40 | SSP2_CLK | | | 38 | J19-11 | GP43 | | GPIO-43 | SSP2_TXD | | | 39 | J19-12 | GP77 | | GPIO-77 | SD | | | 40 | J19-13 | GP82 | | GPIO-82 | SD | | | 41 | J19-14 | GP83 | | GPIO-83 | SD | | | 42 | J20-1 | V_VSYS | Nothing from mraa | | | | | 43 | J20-2 | V_V3P30 | Nothing from mraa | | | | | 44 | J20-3 | GP134 | | | | | | 45 | J20-4 | GP45 | | GPIO-45 | | | | 46 | J20-5 | GP47 | | GPIO-47 | | | | 47 | J20-6 | GP49 | | GPIO-49 | | | | 48 | J20-7 | GP15 | | GPIO-15 | | | | 49 | J20-8 | GP84 | | GPIO-84 | SD | | | 50 | J20-9 | GP42 | | GPIO-42 | SSP2_RXD | | | 51 | J20-10 | GP41 | | GPIO-41 | SSP2_FS | | | 52 | J20-11 | GP78 | | GPIO-78 | SD | | | 53 | J20-12 | GP79 | | GPIO-79 | SD | | | 54 | J20-13 | GP80 | | GPIO-80 | SD | | | 55 | J20-14 | GP81 | | GPIO-81 | SD | |