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maixbit: support both GPIO and GPIOHS controllers

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This commit is contained in:
Yannis Huber
2020-06-19 17:35:36 +02:00
committed by Ron Evans
parent 804dc8b1f9
commit 53c83fa445
4 changed files with 104 additions and 290 deletions
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src/machine/machine_k210.go
+92 -20
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@@ -15,39 +15,111 @@ type PinMode uint8
const (
PinInput PinMode = iota
PinInputPullUp
PinInputPullDown
PinOutput
PinPWM
PinSPI
PinI2C = PinSPI
)
type fpioaPullMode uint8
const (
fpioaPullNone fpioaPullMode = iota
fpioaPullDown
fpioaPullUp
)
func (p Pin) fpioaSetIOPull(pull fpioaPullMode) {
switch pull {
case fpioaPullNone:
kendryte.FPIOA.IO[uint8(p)].ClearBits(kendryte.FPIOA_IO_PU & kendryte.FPIOA_IO_PD)
case fpioaPullUp:
kendryte.FPIOA.IO[uint8(p)].SetBits(kendryte.FPIOA_IO_PU)
kendryte.FPIOA.IO[uint8(p)].ClearBits(kendryte.FPIOA_IO_PD)
case fpioaPullDown:
kendryte.FPIOA.IO[uint8(p)].ClearBits(kendryte.FPIOA_IO_PU)
kendryte.FPIOA.IO[uint8(p)].SetBits(kendryte.FPIOA_IO_PD)
}
}
// Configure this pin with the given configuration.
func (p Pin) Configure(config PinConfig) {
var input bool
kendryte.FPIOA.IO[uint8(p)].SetBits(kendryte.FPIOA_IO_OE_EN | kendryte.FPIOA_IO_IE_EN | kendryte.FPIOA_IO_ST | kendryte.FPIOA_IO_DS_Msk)
switch config.Mode {
case PinInput:
p.fpioaSetIOPull(fpioaPullNone)
input = true
case PinInputPullUp:
p.fpioaSetIOPull(fpioaPullUp)
input = true
case PinInputPullDown:
p.fpioaSetIOPull(fpioaPullDown)
input = true
case PinOutput:
p.fpioaSetIOPull(fpioaPullNone)
input = false
}
if p >= P08 && p <= P15 {
// Converts the IO pin number in the effective GPIO number (assuming default FPIOA function).
gpioPin := uint8(p) - 8
if input {
kendryte.GPIO.DIRECTION.ClearBits(1 << gpioPin)
} else {
kendryte.GPIO.DIRECTION.SetBits(1 << gpioPin)
}
} else if p >= P16 && p <= P47 {
// Converts the IO pin number in the effective GPIOHS number (assuming default FPIOA function).
gpioPin := uint8(p) - 16
if input {
kendryte.GPIOHS.INPUT_EN.SetBits(1 << gpioPin)
kendryte.GPIOHS.OUTPUT_EN.ClearBits(1 << gpioPin)
} else {
kendryte.GPIOHS.OUTPUT_EN.SetBits(1 << gpioPin)
kendryte.GPIOHS.INPUT_EN.ClearBits(1 << gpioPin)
}
}
}
// Set the pin to high or low.
func (p Pin) Set(high bool) {
if p >= P08 && p <= P15 {
gpioPin := uint8(p) - 8
if high {
kendryte.GPIO.DATA_OUTPUT.SetBits(1 << gpioPin)
} else {
kendryte.GPIO.DATA_OUTPUT.ClearBits(1 << gpioPin)
}
} else if p >= P16 && p <= P47 {
gpioPin := uint8(p) - 16
if high {
kendryte.GPIOHS.OUTPUT_VAL.SetBits(1 << gpioPin)
} else {
kendryte.GPIOHS.OUTPUT_VAL.ClearBits(1 << gpioPin)
}
}
}
// Get returns the current value of a GPIO pin.
func (p Pin) Get() bool {
return true
}
type FPIOA struct {
Bus *kendryte.FPIOA_Type
}
var (
FPIOA0 = FPIOA{Bus: kendryte.FPIOA}
)
func (fpioa FPIOA) Init() {
// Enable APB0 clock.
kendryte.SYSCTL.CLK_EN_CENT.SetBits(kendryte.SYSCTL_CLK_EN_CENT_APB0_CLK_EN)
// Enable FPIOA peripheral.
kendryte.SYSCTL.CLK_EN_PERI.SetBits(kendryte.SYSCTL_CLK_EN_PERI_FPIOA_CLK_EN)
var val uint32
if p >= P08 && p <= P15 {
gpioPin := uint8(p) - 8
val = kendryte.GPIO.DATA_INPUT.Get() & (1 << gpioPin)
} else if p >= P16 && p <= P47 {
gpioPin := uint8(p) - 16
val = kendryte.GPIOHS.INPUT_VAL.Get() & (1 << gpioPin)
}
return (val > 0)
}
type UART struct {