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Adafruit PyPortal Support (#800)

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* machine/PyPortal: implementation, also includes refinements for other members of samd51x familty.
This commit is contained in:
BCG
2020-01-06 05:53:43 -05:00
committed by Ron Evans
parent 7363bdc298
commit ecff6f8e0c
10 changed files with 387 additions and 47 deletions
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src/machine/board_pyportal.go
+151
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@@ -0,0 +1,151 @@
// +build sam,atsamd51,pyportal
package machine
import (
"device/sam"
)
// used to reset into bootloader
const RESET_MAGIC_VALUE = 0xf01669ef
// GPIO Pins
const (
D0 = PB13 // NINA_RX
D1 = PB12 // NINA_TX
D2 = PB22 // built-in neopixel
D3 = PA04 // PWM available
D4 = PA05 // PWM available
D5 = PB16 // NINA_ACK
D6 = PB15 // NINA_GPIO0
D7 = PB17 // NINA_RESETN
D8 = PB14 // NINA_CS
D9 = PB04 // TFT_RD
D10 = PB05 // TFT_DC
D11 = PB06 // TFT_CS
D12 = PB07 // TFT_TE
D13 = PB23 // built-in LED
D24 = PA00 // TFT_RESET
D25 = PB31 // TFT_BACKLIGHT
D26 = PB09 // TFT_WR
D27 = PB02 // SDA
D28 = PB03 // SCL
D29 = PA12 // MOSI
D30 = PA13 // SCK
D31 = PA14 // MISO
D32 = PB30 // SD_CS
D33 = PA01 // SD_CARD_DETECT
D34 = PA16 // LCD_DATA0
D35 = PA17 // LCD_DATA1
D36 = PA18 // LCD_DATA2
D37 = PA19 // LCD_DATA3
D38 = PA20 // LCD_DATA4
D39 = PA21 // LCD_DATA5
D40 = PA22 // LCD_DATA6
D41 = PA23 // LCD_DATA7
D42 = PB10 // QSPI
D43 = PB11 // QSPI
D44 = PA08 // QSPI
D45 = PA09 // QSPI
D46 = PA10 // QSPI
D47 = PA11 // QSPI
D50 = PA02 // speaker amplifier shutdown
D51 = PA15 // NINA_RTS
NINA_CS = D8
NINA_ACK = D5
NINA_GPIO0 = D6
NINA_RESETN = D7
NINA_TX = D1
NINA_RX = D0
NINA_RTS = D51
LCD_DATA0 = D34
TFT_RD = D9
TFT_DC = D10
TFT_CS = D11
TFT_TE = D12
TFT_RESET = D24
TFT_BACKLIGHT = D25
TFT_WR = D26
NEOPIXEL = D2
SPK_SD = D50
)
// Analog pins
const (
A0 = PA02 // ADC0/AIN[0]
A1 = D3 // ADC0/AIN[4]
A2 = PA07 // ADC0/AIN[7]
A3 = D4 // ADC0/AIN[5]
A4 = PB00 // ADC0/AIN[12]
A5 = PB01 // ADC0/AIN[13]
A6 = PA06 // ADC0/AIN[6]
A7 = PB08 // ADC1/AIN[0]
AUDIO_OUT = A0
LIGHT = A2
TOUCH_YD = A4
TOUCH_XL = A5
TOUCH_YU = A6
TOUCH_XR = A7
)
const (
LED = D13
)
// UART0 aka USBCDC pins
const (
USBCDC_DM_PIN = PA24
USBCDC_DP_PIN = PA25
)
// TODO: add configuration for UART on SERCOM4 that is connected to TX/RX of ESP32
const (
UART_TX_PIN = NoPin
UART_RX_PIN = NoPin
)
// I2C pins
const (
SDA_PIN = PB02 // SDA: SERCOM2/PAD[0]
SCL_PIN = PB03 // SCL: SERCOM2/PAD[1]
)
// I2C on the PyPortal.
var (
I2C0 = I2C{Bus: sam.SERCOM5_I2CM,
SDA: SDA_PIN,
SCL: SCL_PIN,
PinMode: PinSERCOMAlt}
)
// SPI pins
const (
SPI0_SCK_PIN = PA13 // SCK: SERCOM1/PAD[1]
SPI0_MOSI_PIN = PA12 // MOSI: SERCOM1/PAD[3]
SPI0_MISO_PIN = PA14 // MISO: SERCOM1/PAD[2]
NINA_MOSI = SPI0_MOSI_PIN
NINA_MISO = SPI0_MISO_PIN
NINA_SCK = SPI0_SCK_PIN
)
// SPI on the PyPortal.
var (
SPI0 = SPI{Bus: sam.SERCOM2_SPIM,
SCK: SPI0_SCK_PIN,
MOSI: SPI0_MOSI_PIN,
MISO: SPI0_MISO_PIN,
DOpad: spiTXPad0SCK1,
DIpad: sercomRXPad2,
MISOPinMode: PinSERCOM,
MOSIPinMode: PinSERCOM,
SCKPinMode: PinSERCOM,
}
NINA_SPI = SPI0
)
src/machine/machine_atsamd51.go
+15 -46
View File
@@ -449,16 +449,20 @@ func (a ADC) getADCChannel() uint8 {
return 6
case PA07:
return 7
case PB00:
return 12
case PB01:
return 13
case PB02:
return 10
return 14
case PB03:
return 11
return 15
case PA09:
return 17
case PA11:
return 19
default:
return 0
panic("Invalid ADC pin")
}
}
@@ -1054,19 +1058,6 @@ func (spi SPI) Transfer(w byte) (byte, error) {
// PWM
const period = 0xFFFF
// InitPWM initializes the PWM interface.
func InitPWM() {
// turn on timer clocks used for PWM
sam.MCLK.APBBMASK.SetBits(sam.MCLK_APBBMASK_TCC0_ | sam.MCLK_APBBMASK_TCC1_)
sam.MCLK.APBCMASK.SetBits(sam.MCLK_APBCMASK_TCC2_)
//use clock generator 0
sam.GCLK.PCHCTRL[25].Set((sam.GCLK_PCHCTRL_GEN_GCLK0 << sam.GCLK_PCHCTRL_GEN_Pos) |
sam.GCLK_PCHCTRL_CHEN)
sam.GCLK.PCHCTRL[29].Set((sam.GCLK_PCHCTRL_GEN_GCLK0 << sam.GCLK_PCHCTRL_GEN_Pos) |
sam.GCLK_PCHCTRL_CHEN)
}
// Configure configures a PWM pin for output.
func (pwm PWM) Configure() {
// Set pin as output
@@ -1181,34 +1172,6 @@ func (pwm PWM) setPinCfg(val uint8) {
pwm.Pin.setPinCfg(val)
}
// getTimer returns the timer to be used for PWM on this pin
func (pwm PWM) getTimer() *sam.TCC_Type {
switch pwm.Pin {
case PA16:
return sam.TCC1
case PA17:
return sam.TCC1
case PA14:
return sam.TCC2
case PA15:
return sam.TCC2
case PA18:
return sam.TCC1
case PA19:
return sam.TCC1
case PA20:
return sam.TCC0
case PA21:
return sam.TCC0
case PA23:
return sam.TCC0
case PA22:
return sam.TCC0
default:
return nil // not supported on this pin
}
}
// setChannel sets the value for the correct channel for PWM on this pin
func (pwm PWM) setChannel(val uint32) {
switch pwm.Pin {
@@ -1232,6 +1195,8 @@ func (pwm PWM) setChannel(val uint32) {
pwm.getTimer().CC[3].Set(val)
case PA22:
pwm.getTimer().CC[2].Set(val)
case PB31:
pwm.getTimer().CC[1].Set(val)
default:
return // not supported on this pin
}
@@ -1260,6 +1225,8 @@ func (pwm PWM) setChannelBuffer(val uint32) {
pwm.getTimer().CCBUF[3].Set(val)
case PA22:
pwm.getTimer().CCBUF[2].Set(val)
case PB31:
pwm.getTimer().CCBUF[1].Set(val)
default:
return // not supported on this pin
}
@@ -1288,6 +1255,8 @@ func (pwm PWM) getMux() PinMode {
return PinPWMG
case PA22:
return PinPWMG
case PB31:
return PinPWMF
default:
return 0 // not supported on this pin
}
@@ -2049,14 +2018,14 @@ func setEPINTENSET(ep uint32, val uint8) {
sam.USB_DEVICE.DEVICE_ENDPOINT[ep].EPINTENSET.Set(val)
}
// ResetProcessor should perform a system reset in preperation
// ResetProcessor should perform a system reset in preparation
// to switch to the bootloader to flash new firmware.
func ResetProcessor() {
arm.DisableInterrupts()
// Perform magic reset into bootloader, as mentioned in
// https://github.com/arduino/ArduinoCore-samd/issues/197
*(*uint32)(unsafe.Pointer(uintptr(0x20000000 + 0x00030000 - 4))) = RESET_MAGIC_VALUE
*(*uint32)(unsafe.Pointer(uintptr(0x20000000 + HSRAM_SIZE - 4))) = RESET_MAGIC_VALUE
arm.SystemReset()
}
src/machine/machine_atsamd51g19.go
+45
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@@ -6,3 +6,48 @@
// http://ww1.microchip.com/downloads/en/DeviceDoc/60001507C.pdf
//
package machine
import "device/sam"
const HSRAM_SIZE = 0x00030000
// InitPWM initializes the PWM interface.
func InitPWM() {
// turn on timer clocks used for PWM
sam.MCLK.APBBMASK.SetBits(sam.MCLK_APBBMASK_TCC0_ | sam.MCLK_APBBMASK_TCC1_)
sam.MCLK.APBCMASK.SetBits(sam.MCLK_APBCMASK_TCC2_)
//use clock generator 0
sam.GCLK.PCHCTRL[25].Set((sam.GCLK_PCHCTRL_GEN_GCLK0 << sam.GCLK_PCHCTRL_GEN_Pos) |
sam.GCLK_PCHCTRL_CHEN)
sam.GCLK.PCHCTRL[29].Set((sam.GCLK_PCHCTRL_GEN_GCLK0 << sam.GCLK_PCHCTRL_GEN_Pos) |
sam.GCLK_PCHCTRL_CHEN)
}
// getTimer returns the timer to be used for PWM on this pin
func (pwm PWM) getTimer() *sam.TCC_Type {
switch pwm.Pin {
case PA16:
return sam.TCC1
case PA17:
return sam.TCC1
case PA14:
return sam.TCC2
case PA15:
return sam.TCC2
case PA18:
return sam.TCC1
case PA19:
return sam.TCC1
case PA20:
return sam.TCC0
case PA21:
return sam.TCC0
case PA23:
return sam.TCC0
case PA22:
return sam.TCC0
default:
return nil // not supported on this pin
}
}
src/machine/machine_atsamd51j19.go
+50
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@@ -6,3 +6,53 @@
// http://ww1.microchip.com/downloads/en/DeviceDoc/60001507C.pdf
//
package machine
import "device/sam"
const HSRAM_SIZE = 0x00030000
// InitPWM initializes the PWM interface.
func InitPWM() {
// turn on timer clocks used for PWM
sam.MCLK.APBBMASK.SetBits(sam.MCLK_APBBMASK_TCC0_ | sam.MCLK_APBBMASK_TCC1_)
sam.MCLK.APBCMASK.SetBits(sam.MCLK_APBCMASK_TCC2_)
sam.MCLK.APBDMASK.SetBits(sam.MCLK_APBDMASK_TCC4_)
//use clock generator 0
sam.GCLK.PCHCTRL[25].Set((sam.GCLK_PCHCTRL_GEN_GCLK0 << sam.GCLK_PCHCTRL_GEN_Pos) |
sam.GCLK_PCHCTRL_CHEN)
sam.GCLK.PCHCTRL[29].Set((sam.GCLK_PCHCTRL_GEN_GCLK0 << sam.GCLK_PCHCTRL_GEN_Pos) |
sam.GCLK_PCHCTRL_CHEN)
sam.GCLK.PCHCTRL[38].Set((sam.GCLK_PCHCTRL_GEN_GCLK0 << sam.GCLK_PCHCTRL_GEN_Pos) |
sam.GCLK_PCHCTRL_CHEN)
}
// getTimer returns the timer to be used for PWM on this pin
func (pwm PWM) getTimer() *sam.TCC_Type {
switch pwm.Pin {
case PA16:
return sam.TCC1
case PA17:
return sam.TCC1
case PA14:
return sam.TCC2
case PA15:
return sam.TCC2
case PA18:
return sam.TCC1
case PA19:
return sam.TCC1
case PA20:
return sam.TCC0
case PA21:
return sam.TCC0
case PA23:
return sam.TCC0
case PA22:
return sam.TCC0
case PB31:
return sam.TCC4
default:
return nil // not supported on this pin
}
}
src/machine/machine_atsamd51j20.go
+58
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@@ -0,0 +1,58 @@
// +build sam,atsamd51,atsamd51j20
// Peripheral abstraction layer for the atsamd51.
//
// Datasheet:
// http://ww1.microchip.com/downloads/en/DeviceDoc/60001507C.pdf
//
package machine
import "device/sam"
const HSRAM_SIZE = 0x00040000
// InitPWM initializes the PWM interface.
func InitPWM() {
// turn on timer clocks used for PWM
sam.MCLK.APBBMASK.SetBits(sam.MCLK_APBBMASK_TCC0_ | sam.MCLK_APBBMASK_TCC1_)
sam.MCLK.APBCMASK.SetBits(sam.MCLK_APBCMASK_TCC2_)
sam.MCLK.APBDMASK.SetBits(sam.MCLK_APBDMASK_TCC4_)
//use clock generator 0
sam.GCLK.PCHCTRL[25].Set((sam.GCLK_PCHCTRL_GEN_GCLK0 << sam.GCLK_PCHCTRL_GEN_Pos) |
sam.GCLK_PCHCTRL_CHEN)
sam.GCLK.PCHCTRL[29].Set((sam.GCLK_PCHCTRL_GEN_GCLK0 << sam.GCLK_PCHCTRL_GEN_Pos) |
sam.GCLK_PCHCTRL_CHEN)
sam.GCLK.PCHCTRL[38].Set((sam.GCLK_PCHCTRL_GEN_GCLK0 << sam.GCLK_PCHCTRL_GEN_Pos) |
sam.GCLK_PCHCTRL_CHEN)
}
// getTimer returns the timer to be used for PWM on this pin
func (pwm PWM) getTimer() *sam.TCC_Type {
switch pwm.Pin {
case PA16:
return sam.TCC1
case PA17:
return sam.TCC1
case PA14:
return sam.TCC2
case PA15:
return sam.TCC2
case PA18:
return sam.TCC1
case PA19:
return sam.TCC1
case PA20:
return sam.TCC0
case PA21:
return sam.TCC0
case PA23:
return sam.TCC0
case PA22:
return sam.TCC0
case PB31:
return sam.TCC4
default:
return nil // not supported on this pin
}
}