1 Intel(R) Minnowboard Max {#minnowmax} 2 ======================== 3 MinnowBoard MAX is an open hardware embedded board designed with the Intel(R) 4 Atom(TM) E38xx series SOC (Fromerly Bay Trail). 5 6 For product overview and faq see 7 http://www.minnowboard.org/faq-minnowboard-max/ 8 9 For technical details see http://www.elinux.org/Minnowboard:MinnowMax 10 11 Supported Firmware 12 ------------------ 13 mraa has only been tested with 64 bit firmware version 0.73 or later. 14 15 SPI 16 --- 17 For SPI support you need to load the low_speed_spidev kernel module and that 18 will create the /dev/spidev0.0 device node. Mraa only knows about this one SPI 19 bus and no other. 20 21 Interface notes 22 --------------- 23 The low speed I/O connector supported as per table below. This assumes default 24 BIOS settings, as they are not dynamcially detected If any changes are mode 25 (Device Manager -> System Setup -> South Cluster -> LPSS & CSS) them mraa calls 26 will not behave as expected. 27 28 Documentation shows i2c on bus #5, ACPI shows it on bus #6, but driver uses 29 bus #7. 30 31 | MRAA Number | Physical Pin | Function | Sysfs GPIO | Notes | 32 |-------------|---------------|------------|------------|----------------------| 33 | 1 | 1 | GND | | | 34 | 2 | 2 | GND | | | 35 | 3 | 3 | 5v | | | 36 | 4 | 4 | 3.3v | | | 37 | 5 | 5 | SPI_CS | 220 | SPI (via low_speed) | 38 | 6 | 6 | UART1_TXD | 225 | UART1 | 39 | 7 | 7 | SPI_MISO | 221 | SPI (via low_speed) | 40 | 8 | 8 | UART1_RXD | 224 | UART1 | 41 | 9 | 9 | SPI_MOSI | 222 | SPI (via low_speed) | 42 | 10 | 10 | UART1_CTS | 227 | GPIO | 43 | 11 | 11 | SPI_CLK | 223 | SPI (via low_speed) | 44 | 12 | 12 | UART1_RTS | 226 | GPIO | 45 | 13 | 13 | I2C_SCL | 243 | /dev/i2c-7 | 46 | 14 | 14 | I2S_CLK | 216 | GPIO | 47 | 15 | 15 | I2C_SDA | 242 | /dev/i2c-7 | 48 | 16 | 16 | I2S_FRM | 217 | GPIO | 49 | 17 | 17 | UART2_TXD | 229 | UART2 | 50 | 18 | 18 | I2S_DO | 219 | GPIO | 51 | 19 | 19 | UART2_RXD | 228 | UART2 | 52 | 20 | 20 | I2S_DI | 218 | GPIO | 53 | 21 | 21 | GPIO_S5_0 | 82 | GPIO | 54 | 22 | 22 | PWM0 | 248 | PWM Chip 0 Channel 0 | 55 | 23 | 23 | GPIO_S5_1 | 83 | GPIO | 56 | 24 | 24 | PWM1 | 249 | PWM Chip 1 Channel 0 | 57 | 25 | 25 | S5_4 | 84 | GPIO | 58 | 26 | 26 | IBL_8254 | 208 | GPIO | 59
