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machine: refactor pins to be of Pin type

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This commit is contained in:
Ayke van Laethem
2019-04-28 18:49:17 +02:00
committed by Ron Evans
parent 421ef04efb
commit 94b8214529
38 changed files with 590 additions and 605 deletions
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src/machine/machine_atsamd21.go
+109 -129
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@@ -18,113 +18,93 @@ import (
const CPU_FREQUENCY = 48000000
type GPIOMode uint8
type PinMode uint8
const (
GPIO_ANALOG = 1
GPIO_SERCOM = 2
GPIO_SERCOM_ALT = 3
GPIO_TIMER = 4
GPIO_TIMER_ALT = 5
GPIO_COM = 6
GPIO_AC_CLK = 7
GPIO_DIGITAL = 8
GPIO_INPUT = 9
GPIO_INPUT_PULLUP = 10
GPIO_OUTPUT = 11
GPIO_PWM = GPIO_TIMER
GPIO_PWM_ALT = GPIO_TIMER_ALT
GPIO_INPUT_PULLDOWN = 12
PinAnalog PinMode = 1
PinSERCOM PinMode = 2
PinSERCOMAlt PinMode = 3
PinTimer PinMode = 4
PinTimerAlt PinMode = 5
PinCom PinMode = 6
//PinAC_CLK PinMode = 7
PinDigital PinMode = 8
PinInput PinMode = 9
PinInputPullup PinMode = 10
PinOutput PinMode = 11
PinPWM PinMode = PinTimer
PinPWMAlt PinMode = PinTimerAlt
PinInputPulldown PinMode = 12
)
// Hardware pins
const (
PA00 = 0
PA01 = 1
PA02 = 2
PA03 = 3
PA04 = 4
PA05 = 5
PA06 = 6
PA07 = 7
PA08 = 8
PA09 = 9
PA10 = 10
PA11 = 11
PA12 = 12
PA13 = 13
PA14 = 14
PA15 = 15
PA16 = 16
PA17 = 17
PA18 = 18
PA19 = 19
PA20 = 20
PA21 = 21
PA22 = 22
PA23 = 23
PA24 = 24
PA25 = 25
PA26 = 26
PA27 = 27
PA28 = 28
PA29 = 29
PA30 = 30
PA31 = 31
PB00 = 32
PB01 = 33
PB02 = 34
PB03 = 35
PB04 = 36
PB05 = 37
PB06 = 38
PB07 = 39
PB08 = 40
PB09 = 41
PB10 = 42
PB11 = 43
PB12 = 44
PB13 = 45
PB14 = 46
PB15 = 47
PB16 = 48
PB17 = 49
PB18 = 50
PB19 = 51
PB20 = 52
PB21 = 53
PB22 = 54
PB23 = 55
PB24 = 56
PB25 = 57
PB26 = 58
PB27 = 59
PB28 = 60
PB29 = 61
PB30 = 62
PB31 = 63
PA00 Pin = 0
PA01 Pin = 1
PA02 Pin = 2
PA03 Pin = 3
PA04 Pin = 4
PA05 Pin = 5
PA06 Pin = 6
PA07 Pin = 7
PA08 Pin = 8
PA09 Pin = 9
PA10 Pin = 10
PA11 Pin = 11
PA12 Pin = 12
PA13 Pin = 13
PA14 Pin = 14
PA15 Pin = 15
PA16 Pin = 16
PA17 Pin = 17
PA18 Pin = 18
PA19 Pin = 19
PA20 Pin = 20
PA21 Pin = 21
PA22 Pin = 22
PA23 Pin = 23
PA24 Pin = 24
PA25 Pin = 25
PA26 Pin = 26
PA27 Pin = 27
PA28 Pin = 28
PA29 Pin = 29
PA30 Pin = 30
PA31 Pin = 31
PB00 Pin = 32
PB01 Pin = 33
PB02 Pin = 34
PB03 Pin = 35
PB04 Pin = 36
PB05 Pin = 37
PB06 Pin = 38
PB07 Pin = 39
PB08 Pin = 40
PB09 Pin = 41
PB10 Pin = 42
PB11 Pin = 43
PB12 Pin = 44
PB13 Pin = 45
PB14 Pin = 46
PB15 Pin = 47
PB16 Pin = 48
PB17 Pin = 49
PB18 Pin = 50
PB19 Pin = 51
PB20 Pin = 52
PB21 Pin = 53
PB22 Pin = 54
PB23 Pin = 55
PB24 Pin = 56
PB25 Pin = 57
PB26 Pin = 58
PB27 Pin = 59
PB28 Pin = 60
PB29 Pin = 61
PB30 Pin = 62
PB31 Pin = 63
)
// getPMux returns the value for the correct PMUX register for this pin.
func (p GPIO) getPMux() uint8 {
return getPMux(p.Pin)
}
// setPMux sets the value for the correct PMUX register for this pin.
func (p GPIO) setPMux(val uint8) {
setPMux(p.Pin, val)
}
// getPinCfg returns the value for the correct PINCFG register for this pin.
func (p GPIO) getPinCfg() uint8 {
return getPinCfg(p.Pin)
}
// setPinCfg sets the value for the correct PINCFG register for this pin.
func (p GPIO) setPinCfg(val uint8) {
setPinCfg(p.Pin, val)
}
// InitADC initializes the ADC.
func InitADC() {
// ADC Bias Calibration
@@ -184,7 +164,7 @@ func InitADC() {
// Configure configures a ADCPin to be able to be used to read data.
func (a ADC) Configure() {
GPIO{a.Pin}.Configure(GPIOConfig{Mode: GPIO_ANALOG})
a.Pin.Configure(PinConfig{Mode: PinAnalog})
return
}
@@ -340,8 +320,8 @@ func (uart UART) Configure(config UARTConfig) {
}
// configure pins
GPIO{config.TX}.Configure(GPIOConfig{Mode: GPIO_SERCOM})
GPIO{config.RX}.Configure(GPIOConfig{Mode: GPIO_SERCOM})
config.TX.Configure(PinConfig{Mode: PinSERCOM})
config.RX.Configure(PinConfig{Mode: PinSERCOM})
// reset SERCOM0
uart.Bus.CTRLA.SetBits(sam.SERCOM_USART_CTRLA_SWRST)
@@ -434,16 +414,16 @@ func handleUART1() {
// I2C on the SAMD21.
type I2C struct {
Bus *sam.SERCOM_I2CM_Type
SCL uint8
SDA uint8
PinMode GPIOMode
SCL Pin
SDA Pin
PinMode PinMode
}
// I2CConfig is used to store config info for I2C.
type I2CConfig struct {
Frequency uint32
SCL uint8
SDA uint8
SCL Pin
SDA Pin
}
const (
@@ -496,8 +476,8 @@ func (i2c I2C) Configure(config I2CConfig) {
}
// enable pins
GPIO{i2c.SDA}.Configure(GPIOConfig{Mode: i2c.PinMode})
GPIO{i2c.SCL}.Configure(GPIOConfig{Mode: i2c.PinMode})
i2c.SDA.Configure(PinConfig{Mode: i2c.PinMode})
i2c.SCL.Configure(PinConfig{Mode: i2c.PinMode})
}
// SetBaudRate sets the communication speed for the I2C.
@@ -770,11 +750,11 @@ func (i2s I2S) Configure(config I2SConfig) {
}
// configure pin for clock
GPIO{config.SCK}.Configure(GPIOConfig{Mode: GPIO_COM})
config.SCK.Configure(PinConfig{Mode: PinCom})
// configure pin for WS, if needed
if config.WS != 0xff {
GPIO{config.WS}.Configure(GPIOConfig{Mode: GPIO_COM})
if config.WS != NoPin {
config.WS.Configure(PinConfig{Mode: PinCom})
}
// now set serializer data size.
@@ -813,7 +793,7 @@ func (i2s I2S) Configure(config I2SConfig) {
}
// configure data pin
GPIO{config.SD}.Configure(GPIOConfig{Mode: GPIO_COM})
config.SD.Configure(PinConfig{Mode: PinCom})
// re-enable
i2s.Bus.CTRLA.SetBits(sam.I2S_CTRLA_ENABLE)
@@ -900,9 +880,9 @@ type SPI struct {
// SPIConfig is used to store config info for SPI.
type SPIConfig struct {
Frequency uint32
SCK uint8
MOSI uint8
MISO uint8
SCK Pin
MOSI Pin
MISO Pin
LSBFirst bool
Mode uint8
}
@@ -927,9 +907,9 @@ func (spi SPI) Configure(config SPIConfig) {
}
// enable pins
GPIO{config.SCK}.Configure(GPIOConfig{Mode: GPIO_SERCOM_ALT})
GPIO{config.MOSI}.Configure(GPIOConfig{Mode: GPIO_SERCOM_ALT})
GPIO{config.MISO}.Configure(GPIOConfig{Mode: GPIO_SERCOM_ALT})
config.SCK.Configure(PinConfig{Mode: PinSERCOMAlt})
config.MOSI.Configure(PinConfig{Mode: PinSERCOMAlt})
config.MISO.Configure(PinConfig{Mode: PinSERCOMAlt})
// reset SERCOM
spi.Bus.CTRLA.SetBits(sam.SERCOM_SPI_CTRLA_SWRST)
@@ -1044,20 +1024,20 @@ func (pwm PWM) Configure() {
}
// Set pin as output
sam.PORT.DIRSET0.Set(1 << pwm.Pin)
sam.PORT.DIRSET0.Set(1 << uint8(pwm.Pin))
// Set pin to low
sam.PORT.OUTCLR0.Set(1 << pwm.Pin)
sam.PORT.OUTCLR0.Set(1 << uint8(pwm.Pin))
// Enable the port multiplexer for pin
pwm.setPinCfg(sam.PORT_PINCFG0_PMUXEN)
// Connect TCCX timer to pin.
// we normally use the F channel aka ALT
pwmConfig := GPIO_PWM_ALT
pwmConfig := PinPWMAlt
// in the case of PA6 or PA7 we have to use E channel
if pwm.Pin == 6 || pwm.Pin == 7 {
pwmConfig = GPIO_PWM
pwmConfig = PinPWM
}
if pwm.Pin&1 > 0 {
@@ -1102,22 +1082,22 @@ func (pwm PWM) Set(value uint16) {
// getPMux returns the value for the correct PMUX register for this pin.
func (pwm PWM) getPMux() uint8 {
return getPMux(pwm.Pin)
return pwm.Pin.getPMux()
}
// setPMux sets the value for the correct PMUX register for this pin.
func (pwm PWM) setPMux(val uint8) {
setPMux(pwm.Pin, val)
pwm.Pin.setPMux(val)
}
// getPinCfg returns the value for the correct PINCFG register for this pin.
func (pwm PWM) getPinCfg() uint8 {
return getPinCfg(pwm.Pin)
return pwm.Pin.getPinCfg()
}
// setPinCfg sets the value for the correct PINCFG register for this pin.
func (pwm PWM) setPinCfg(val uint8) {
setPinCfg(pwm.Pin, val)
pwm.Pin.setPinCfg(val)
}
// getTimer returns the timer to be used for PWM on this pin
@@ -1260,8 +1240,8 @@ func (usbcdc USBCDC) Configure(config UARTConfig) {
sam.USB_DEVICE.DESCADD.Set(uint32(uintptr(unsafe.Pointer(&usbEndpointDescriptors))))
// configure pins
GPIO{USBCDC_DM_PIN}.Configure(GPIOConfig{Mode: GPIO_COM})
GPIO{USBCDC_DP_PIN}.Configure(GPIOConfig{Mode: GPIO_COM})
USBCDC_DM_PIN.Configure(PinConfig{Mode: PinCom})
USBCDC_DP_PIN.Configure(PinConfig{Mode: PinCom})
// performs pad calibration from store fuses
handlePadCalibration()