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author | Michael Ring <michael.ring@swisscom.com> | 2015-04-08 16:21:16 +0200 |
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committer | Brendan Le Foll <brendan.le.foll@intel.com> | 2015-04-08 22:19:15 +0100 |
commit | b2af0b075181211d140cf235067a94215321b9d5 (patch) | |
tree | 1563d4323ae3dd23e7d01fd45f9d2cf74104cbfe /docs/banana_pi.md | |
parent | 0d15d3a38cd3de43030ef59c74efbe32a872aa36 (diff) |
banana_pi.md: Added documentation for BananaPi/Pro
Signed-off-by: Michael Ring <mail@michael-ring.org>
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
Diffstat (limited to 'docs/banana_pi.md')
-rw-r--r-- | docs/banana_pi.md | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/docs/banana_pi.md b/docs/banana_pi.md new file mode 100644 index 0000000..87e962c --- /dev/null +++ b/docs/banana_pi.md @@ -0,0 +1,85 @@ +Banana Pi/Pro {#bananapi} +============ + +The Banana Pi/Pro is a clone of the well known Raspberry Pi. It has advantages +compared to the 'old' Raspberry Pi A/B/A+/B+ devices as it is based on the +Allwinner A20 Dual Core Cortex-A7. It also has 1G Ethernet compared to 100M +Ethernet on the Raspberry. + +There is a lot of effort on Mainline Kernel to fully support the Allwinner +Chips, for example Fedora 22 Arm will come with support for BananaPi/Pro which +means that you will be able to have HDMI Output and a number of periperal +modules work out of the box. + +Pin-wise the Banana Pi matches the Raspberry Pi, the Banana Pro has a connector +similar to the Raspberry Pi A+/B+ + +Revision Support +---------------- +Banana Pi +Banana Pro + +Interface notes +--------------- + +**PWM** Whilst the Banana Pi is meant to have 1 PWM channel this is currently +not supported. + +**SPI** works fine when used with old 3.4 Kernels provided by Lemaker, on +Mainline Kernel SPI does currently not work + +**COM** I have created devicetree patches so that Mainline Kernel supports all +COM-Interfaces, this is not yet visible in Kernel + +Mainline Kernel requires the use of Device-Trees, mraa tries it's best to guess +which gpio/serial/i2c/spi is connected where but there is currently no support +to manipulate the Device-Tree settings from within mraa. If a device does not +work as expected then please check syslog, mraa usually complains with a +meaningful message when it is unable to initialize the device. + +Pin Mapping +----------- + +This pin mapping refers to the Banana Pi but gives an idea +as to what the values are from mraa. Note that there is an emum to use wiringPi +style numbers. + +| MRAA Number | Physical Pin | Function | +|-------------|--------------|-----------| +| 1 | P1-01 | 3V3 VCC | +| 2 | P1-02 | 5V VCC | +| 3 | P1-03 | I2C SDA | +| 4 | P1-04 | 5V VCC | +| 5 | P1-05 | I2C SCL | +| 6 | P1-06 | GND | +| 7 | P1-07 | GPIO(PI03)| +| 8 | P1-08 | UART4 TX | +| 9 | P1-09 | GND | +| 10 | P1-10 | UART4 RX | +| 11 | P1-11 | GPIO(PI19)| +| 12 | P1-12 | GPIO(PH02)| +| 13 | P1-13 | GPIO(PI18)| +| 14 | P1-14 | GND | +| 15 | P1-15 | GPIO(PI17)| +| 16 | P1-16 | GPIO(PH20)| +| 17 | P1-17 | 3V3 VCC | +| 18 | P1-18 | GPIO(PH21)| +| 19 | P1-19 | SPI MOSI | +| 20 | P1-20 | GND | +| 21 | P1-21 | SPI MISO | +| 22 | P1-22 | GPIO(PI16)| +| 23 | P1-23 | SPI SCL | +| 24 | P1-24 | SPI CS0 | +| 25 | P1-25 | GND | +| 26 | P1-26 | SPI CS1 | + +There is also a second 8-pin connector on the Banana Pi, the pins are as follows: + +| 27 | P1-19 | 5V VCC | +| 28 | P1-20 | 3V3 VCC | +| 29 | P1-21 | GPIO(PH5) | +| 30 | P1-22 | GPIO(PI22)| +| 31 | P1-23 | GPIO(PH03)| +| 32 | P1-24 | GPIO(PI20)| +| 33 | P1-25 | GND | +| 34 | P1-26 | GND | |