go-embedded/embd
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bring in the idea of a hardware abstraction layer

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This commit is contained in:
Karan Misra 2014-02-27 04:24:53 +05:30
parent b4de382833
commit b5e2d0acc7
35 changed files with 994 additions and 971 deletions
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45
host/rpi/data.go Normal file
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package rpi
import (
"github.com/kidoman/embd/host/generic/linux/gpio"
)
var rev1Pins = gpio.PinMap{
&gpio.PinDesc{0, []string{"P1_3", "GPIO_0", "SDA", "I2C0_SDA"}, gpio.Normal | gpio.I2C},
&gpio.PinDesc{1, []string{"P1_5", "GPIO_1", "SCL", "I2C0_SCL"}, gpio.Normal | gpio.I2C},
&gpio.PinDesc{4, []string{"P1_7", "GPIO_4", "GPCLK0"}, gpio.Normal},
&gpio.PinDesc{14, []string{"P1_8", "GPIO_14", "TXD", "UART0_TXD"}, gpio.Normal | gpio.UART},
&gpio.PinDesc{15, []string{"P1_10", "GPIO_15", "RXD", "UART0_RXD"}, gpio.Normal | gpio.UART},
&gpio.PinDesc{17, []string{"P1_11", "GPIO_17"}, gpio.Normal},
&gpio.PinDesc{18, []string{"P1_12", "GPIO_18", "PCM_CLK"}, gpio.Normal},
&gpio.PinDesc{21, []string{"P1_13", "GPIO_21"}, gpio.Normal},
&gpio.PinDesc{22, []string{"P1_15", "GPIO_22"}, gpio.Normal},
&gpio.PinDesc{23, []string{"P1_16", "GPIO_23"}, gpio.Normal},
&gpio.PinDesc{24, []string{"P1_18", "GPIO_24"}, gpio.Normal},
&gpio.PinDesc{10, []string{"P1_19", "GPIO_10", "MOSI", "SPI0_MOSI"}, gpio.Normal | gpio.SPI},
&gpio.PinDesc{9, []string{"P1_21", "GPIO_9", "MISO", "SPI0_MISO"}, gpio.Normal | gpio.SPI},
&gpio.PinDesc{25, []string{"P1_22", "GPIO_25"}, gpio.Normal},
&gpio.PinDesc{11, []string{"P1_23", "GPIO_11", "SCLK", "SPI0_SCLK"}, gpio.Normal | gpio.SPI},
&gpio.PinDesc{8, []string{"P1_24", "GPIO_8", "CE0", "SPI0_CE0_N"}, gpio.Normal | gpio.SPI},
&gpio.PinDesc{7, []string{"P1_26", "GPIO_7", "CE1", "SPI0_CE1_N"}, gpio.Normal | gpio.SPI},
}
var rev2Pins = gpio.PinMap{
&gpio.PinDesc{2, []string{"P1_3", "GPIO_2", "SDA", "I2C1_SDA"}, gpio.Normal | gpio.I2C},
&gpio.PinDesc{3, []string{"P1_5", "GPIO_3", "SCL", "I2C1_SCL"}, gpio.Normal | gpio.I2C},
&gpio.PinDesc{4, []string{"P1_7", "GPIO_4", "GPCLK0"}, gpio.Normal},
&gpio.PinDesc{14, []string{"P1_8", "GPIO_14", "TXD", "UART0_TXD"}, gpio.Normal | gpio.UART},
&gpio.PinDesc{15, []string{"P1_10", "GPIO_15", "RXD", "UART0_RXD"}, gpio.Normal | gpio.UART},
&gpio.PinDesc{17, []string{"P1_11", "GPIO_17"}, gpio.Normal},
&gpio.PinDesc{18, []string{"P1_12", "GPIO_18", "PCM_CLK"}, gpio.Normal},
&gpio.PinDesc{27, []string{"P1_13", "GPIO_27"}, gpio.Normal},
&gpio.PinDesc{22, []string{"P1_15", "GPIO_22"}, gpio.Normal},
&gpio.PinDesc{23, []string{"P1_16", "GPIO_23"}, gpio.Normal},
&gpio.PinDesc{24, []string{"P1_18", "GPIO_24"}, gpio.Normal},
&gpio.PinDesc{10, []string{"P1_19", "GPIO_10", "MOSI", "SPI0_MOSI"}, gpio.Normal | gpio.SPI},
&gpio.PinDesc{9, []string{"P1_21", "GPIO_9", "MISO", "SPI0_MISO"}, gpio.Normal | gpio.SPI},
&gpio.PinDesc{25, []string{"P1_22", "GPIO_25"}, gpio.Normal},
&gpio.PinDesc{11, []string{"P1_23", "GPIO_11", "SCLK", "SPI0_SCLK"}, gpio.Normal | gpio.SPI},
&gpio.PinDesc{8, []string{"P1_24", "GPIO_8", "CE0", "SPI0_CE0_N"}, gpio.Normal | gpio.SPI},
&gpio.PinDesc{7, []string{"P1_26", "GPIO_7", "CE1", "SPI0_CE1_N"}, gpio.Normal | gpio.SPI},
}

29
host/rpi/descriptor.go Normal file
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package rpi
import (
"github.com/kidoman/embd/gpio"
lgpio "github.com/kidoman/embd/host/generic/linux/gpio"
li2c "github.com/kidoman/embd/host/generic/linux/i2c"
"github.com/kidoman/embd/i2c"
)
type descriptor struct {
rev int
}
func (d *descriptor) GPIO() gpio.GPIO {
var pins = rev1Pins
if d.rev > 1 {
pins = rev2Pins
}
return lgpio.New(pins)
}
func (d *descriptor) I2C() i2c.I2C {
return li2c.New()
}
func Descriptor(rev int) *descriptor {
return &descriptor{rev}
}