b67351babe
Previously, the machine.UART0 object had two meanings:
- it was the first UART on the chip
- it was the default output for println
These two meanings conflict, and resulted in workarounds like:
- Defining UART0 to refer to the USB-CDC interface (atsamd21,
atsamd51, nrf52840), even though that clearly isn't an UART.
- Defining NRF_UART0 to avoid a conflict with UART0 (which was
redefined as a USB-CDC interface).
- Defining aliases like UART0 = UART1, which refer to the same
hardware peripheral (stm32).
This commit changes this to use a new machine.Serial object for the
default serial port. It might refer to the first or second UART
depending on the board, or even to the USB-CDC interface. Also, UART0
now really refers to the first UART on the chip, no longer to a USB-CDC
interface.
The changes in the runtime package are all just search+replace. The
changes in the machine package are a mixture of search+replace and
manual modifications.
This commit does not affect binary size, in fact it doesn't affect the
resulting binary at all.
103 строки
1,9 КиБ
Go
103 строки
1,9 КиБ
Go
// +build arduino_nano33
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// This contains the pin mappings for the Arduino Nano33 IoT board.
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//
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// For more information, see: https://store.arduino.cc/nano-33-iot
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//
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package machine
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// used to reset into bootloader
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const RESET_MAGIC_VALUE = 0x07738135
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// GPIO Pins
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const (
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RX0 Pin = PB23 // UART2 RX
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TX1 Pin = PB22 // UART2 TX
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D2 Pin = PB10 // PWM available
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D3 Pin = PB11 // PWM available
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D4 Pin = PA07
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D5 Pin = PA05 // PWM available
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D6 Pin = PA04 // PWM available
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D7 Pin = PA06
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D8 Pin = PA18
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D9 Pin = PA20 // PWM available
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D10 Pin = PA21 // PWM available
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D11 Pin = PA16 // PWM available
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D12 Pin = PA19 // PWM available
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D13 Pin = PA17
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)
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// Analog pins
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const (
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A0 Pin = PA02 // ADC/AIN[0]
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A1 Pin = PB02 // ADC/AIN[10]
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A2 Pin = PA11 // ADC/AIN[19]
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A3 Pin = PA10 // ADC/AIN[18],
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A4 Pin = PB08 // ADC/AIN[2], SCL: SERCOM2/PAD[1]
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A5 Pin = PB09 // ADC/AIN[3], SDA: SERCOM2/PAD[1]
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A6 Pin = PA09 // ADC/AIN[17]
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A7 Pin = PB03 // ADC/AIN[11]
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)
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const (
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LED = D13
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)
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// USBCDC pins
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const (
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USBCDC_DM_PIN Pin = PA24
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USBCDC_DP_PIN Pin = PA25
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)
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// UART1 pins
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const (
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UART_TX_PIN Pin = PA22
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UART_RX_PIN Pin = PA23
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)
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// I2C pins
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const (
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SDA_PIN Pin = A4 // SDA: SERCOM4/PAD[1]
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SCL_PIN Pin = A5 // SCL: SERCOM4/PAD[1]
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)
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// SPI pins
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const (
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SPI0_SCK_PIN Pin = D13 // SCK: SERCOM1/PAD[1]
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SPI0_SDO_PIN Pin = D11 // SDO: SERCOM1/PAD[0]
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SPI0_SDI_PIN Pin = D12 // SDI: SERCOM1/PAD[3]
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)
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// NINA-W102 Pins
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const (
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NINA_SDO Pin = PA12
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NINA_SDI Pin = PA13
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NINA_CS Pin = PA14
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NINA_SCK Pin = PA15
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NINA_GPIO0 Pin = PA27
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NINA_RESETN Pin = PA08
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NINA_ACK Pin = PA28
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NINA_TX Pin = PA22
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NINA_RX Pin = PA23
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)
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// I2S pins
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const (
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I2S_SCK_PIN Pin = PA10
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I2S_SD_PIN Pin = PA08
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I2S_WS_PIN = NoPin // TODO: figure out what this is on Arduino Nano 33.
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)
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// USB CDC identifiers
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const (
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usb_STRING_PRODUCT = "Arduino NANO 33 IoT"
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usb_STRING_MANUFACTURER = "Arduino"
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)
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var (
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usb_VID uint16 = 0x2341
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usb_PID uint16 = 0x8057
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)
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